阅读说明：本技术 一种可快速拆卸柔性大直径环缝焊接工装 (Can dismantle flexible major diameter circumferential weld welding frock fast ) 是由 曾如川 葛一凡 魏松 张斌 杜会桥 姜坤 郑雪松 龙海东 王宁 于 2019-09-23 设计创作，主要内容包括：本发明一种导轨式大型舱体柱段环焊工装,包括方轴、固定法兰、轴套法兰、内框、外框和外撑弧块组件；整个工装为可拆卸式圆周均布结构,从内往外分别为方轴包括方轴、固定法兰、轴套法兰、内框、外框和外撑弧块组件；其中方轴位于整个工装的中心位置；方轴任意一端焊接有一个连接法兰,实现与焊接系统变位机之间的装配固定,四面布有四条平行直线导轨,用于整个工装沿轴向平滑移动；固定法兰内侧布有四个滑块实现与方轴上的直线导轨连接并沿轴向平滑移动；内框、外框以及轴套法兰依次通过铰制孔螺栓连接提供辐射式扩展和可重复拆卸功能；最外围圆周均布外撑弧块组件与外框连接,外撑弧块组件上设置有机械丝杠实现弧块的伸缩从而满足柱段环形焊缝的顶紧装配。(The invention relates to a guide rail type large cabin body column section girth welding tool which comprises a square shaft, a fixed flange, a shaft sleeve flange, an inner frame, an outer frame and an outer support arc block assembly, wherein the square shaft is fixedly connected with the fixed flange; the whole tool is of a detachable circumferentially and uniformly distributed structure, and is a square shaft from inside to outside and comprises a square shaft, a fixed flange, a shaft sleeve flange, an inner frame, an outer frame and an outer arc supporting block assembly; the square shaft is positioned at the center of the whole tool; a connecting flange is welded at any end of the square shaft to realize the assembly and fixation with the welding system positioner, and four parallel linear guide rails are distributed on four sides and used for the smooth movement of the whole tool along the axial direction; four sliding blocks are distributed on the inner side of the fixed flange to realize connection with a linear guide rail on the square shaft and move smoothly along the axial direction; the inner frame, the outer frame and the shaft sleeve flange are connected through the hinged hole bolts in sequence to provide the functions of radiation type expansion and repeated disassembly; the outer arc supporting block assembly is uniformly distributed on the periphery of the outermost periphery and connected with the outer frame, and a mechanical screw rod is arranged on the outer arc supporting block assembly to stretch out and draw back the arc blocks so as to meet the jacking assembly of the annular welding line of the column section.)

1. The utility model provides a large-scale cabin body column segment circumferential weld frock of guide tracked which characterized in that: comprises a square shaft (1), a fixed flange (2), a shaft sleeve flange (3), an inner frame (4), an outer frame (5) and an outer arc supporting block assembly (6); the whole tool is of a detachable circumferentially and uniformly distributed structure, and is respectively a square shaft from inside to outside, wherein the square shaft comprises a square shaft (1), a fixed flange (2), a shaft sleeve flange (3), an inner frame (4), an outer frame (5) and an outer supporting arc block assembly (6); the square shaft (1) is positioned at the center of the whole tool; a connecting flange is welded at any end of the square shaft (1) to realize the assembly and fixation with a welding system positioner, and four parallel linear guide rails are distributed on four sides and used for the smooth movement of the whole tool along the axial direction; four sliding blocks are distributed on the inner side of the fixed flange (2) to realize connection with a linear guide rail on the square shaft (1) and move smoothly along the axial direction; the inner frame (4), the outer frame (5) and the shaft sleeve flange (3) are connected through the hinged hole bolt in sequence to provide the functions of radiation type expansion and repeated disassembly; the outermost circumference equipartition outer arc piece subassembly (6) is connected with frame (5), thereby is provided with the tight assembly in top that mechanical lead screw realized the flexible column segment circumferential weld of satisfying the arc piece on outer arc piece subassembly (6).

2. The tool for girth welding of the column section of the guide rail type large cabin according to claim 1, is characterized in that: the square shaft (1) is a square steel shaft and is formed by processing square steel, and 1 linear guide rail is respectively assembled on each of four side surfaces through bolts and used for linear sliding of the whole girth welding tool on the square shaft; and any end of the square shaft (1) is welded with a connecting flange for assembling and fixing with the welding system positioner.

3. The tool for girth welding of the column section of the guide rail type large cabin according to claim 2, is characterized in that: the fixed flange (2) is a cast steel structure flange with a square inner part and a round outer part, four side surfaces inside the fixed flange are provided with slide blocks through bolts, and the slide blocks are matched with a linear guide rail on the square shaft (1) to realize that the shaft sleeve flange (3) slides on the guide rail along a straight line; the outer cylindrical surface of the fixed flange (2) is matched with the inner cylindrical surface of the shaft sleeve flange (3), and the assembly and the fixation between the fixed flange and the shaft sleeve flange (3) are realized through the end face whole circle of bolts.

4. The tool for girth welding of the column section of the guide rail type large cabin according to claim 3, is characterized in that: the shaft sleeve flange (3) is a cast steel structure flange, an inner cylindrical surface is matched with an outer cylindrical surface of the fixed flange (2), the end surface is assembled and fixed with the end surface of the fixed flange (2) through a whole circle of bolts, n assembling surfaces are uniformly distributed on the outer side surface, and the assembling and fixing are carried out through the bolts and n inner frames.

5. The tool for girth welding of the column section of the guide rail type large cabin according to claim 1, is characterized in that: the outer arc supporting block assembly (6) comprises an aluminum alloy arc supporting block (6-1), a guide rod assembly (6-2) and a lead screw assembly (6-3); the diameter of the outer circular arc of the aluminum alloy arc supporting block (6-1) is consistent with the diameter of the inner diameter of the circular seam of the welded cabin body, so that the inner supporting effect of parts to be welded in the assembling and welding process is realized; the lead screw assembly (6-2) is rotated, so that the aluminum alloy arc-shaped supporting block (6-1) moves in the radial direction, and the purposes of assembling before welding and quickly disassembling the tool after welding are achieved; the guide rod assemblies (6-3) assembled on two sides of the aluminum alloy arc-shaped supporting block (6-1) are used for ensuring the stability of the radial moving process of the aluminum alloy arc-shaped supporting block (6-1).

6. A method for quickly disassembling flexible large-diameter girth welding pre-assembly by using the guide rail type large cabin body column section girth welding tool of any one of claims 1 to 5 is characterized by comprising the following steps:

1) firstly, a square shaft (1) is assembled and fixed on a positioner of a welding system, then a fixed flange (2) is assembled on the square shaft (1) through a sliding block and is assembled with a linear guide rail, and the fixed flange (2) is assembled and connected with a shaft sleeve flange (3) through a bolt;

2) assembling and fixing the n inner frames (4) and the 2n outer frames (5) with the shaft sleeve flange (3) arranged in the central area in sequence by using bolts;

3) adjusting a screw rod assembly on the outer arc supporting block assembly (6) to a minimum stroke position;

4) the assembly of the parts to be welded is completed, and then the screw rod assembly on the outer arc supporting block assembly (6) is adjusted outwards to ensure that the parts to be welded are supported tightly;

5) accomplish the product welding back, adjust back minimum stroke position with the lead screw subassembly on the outer arc piece subassembly (6), pull down outer arc piece subassembly (6), then pull down frame (5) and inside casing (4) in proper order, withdraw from square shaft (1) from the inside safety of product at last to whole flexible assembly welding and the rapid Assembly and the dismantlement of welding frock of realizing major diameter cabin body column segment circumferential weld.

7. The method of assembly of claim 6, wherein: the square shaft (1) is a square steel shaft and is formed by processing square steel, and 1 linear guide rail is respectively assembled on each of four side surfaces through bolts and used for linear sliding of the whole girth welding tool on the square shaft; and any end of the square shaft (1) is welded with a connecting flange for assembling and fixing with the welding system positioner.

8. The method of assembly of claim 6, wherein: the fixed flange (2) is a cast steel structure flange with a square inner part and a round outer part, four side surfaces inside the fixed flange are provided with slide blocks through bolts, and the slide blocks are matched with a linear guide rail on the square shaft (1) to realize that the shaft sleeve flange (3) slides on the guide rail along a straight line; the outer cylindrical surface of the fixed flange (2) is matched with the inner cylindrical surface of the shaft sleeve flange (3), and the assembly and the fixation between the fixed flange and the shaft sleeve flange (3) are realized through the end face whole circle of bolts.

9. The method of assembly of claim 6, wherein: the shaft sleeve flange (3) is a cast steel structure flange, an inner cylindrical surface is matched with an outer cylindrical surface of the fixed flange (2), the end surface is assembled and fixed with the end surface of the fixed flange (2) through a whole circle of bolts, n assembling surfaces are uniformly distributed on the outer side surface, and the assembling and fixing are carried out through the bolts and n inner frames.

10. The method of assembly of claim 6, wherein: the outer arc supporting block assembly (6) comprises an aluminum alloy arc supporting block (6-1), a guide rod assembly (6-2) and a lead screw assembly (6-3); the diameter of the outer circular arc of the aluminum alloy arc supporting block (6-1) is consistent with the diameter of the inner diameter of the circular seam of the welded cabin body, so that the inner supporting effect of parts to be welded in the assembling and welding process is realized; the lead screw assembly (6-2) is rotated, so that the aluminum alloy arc-shaped supporting block (6-1) moves in the radial direction, and the purposes of assembling before welding and quickly disassembling the tool after welding are achieved; the guide rod assemblies (6-3) assembled on two sides of the aluminum alloy arc-shaped supporting block (6-1) are used for ensuring the stability of the radial moving process of the aluminum alloy arc-shaped supporting block (6-1).

Technical Field

The invention relates to a welding tool capable of quickly disassembling a flexible large-diameter girth joint, and belongs to the technical field of spacecraft welding processes.

Background

At present, the maximum diameter of a cylindrical section circular seam of an aluminum alloy cabin body of a large spacecraft reaches 4 meters, the wall thickness is more than 5mm, and the welding of the cylindrical section circular seam is completed by adopting a variable polarity plasma arc welding process method. Due to the structural limitation of the closed circular seam, the traditional fixed integral casting welding tool cannot meet the requirements of assembly and welding of the closed circular seam, and a movable internal support tool must be adopted to form welding pretightening force on a welding seam radial butt welding port.

When the cabin body circular seam diameter size reaches 4 meters, in order to guarantee the good whole rigidity of welding frock and can provide effectual pretightning force for the weld opening, the whole weight of post section circular welding frock will exceed 2 tons. Traditional column section boxing frock is "axle sleeve + axle" clearance fit structure, need make a round trip to slide by the axle sleeve of aluminum alloy structure area whole column section boxing frock on the steel shaft in the use and cooperate the assembly welding of different position column section circumferential weld, brings great difficulty for the operation, thereby the fitting surface between the sliding process also can cause the damage to influence the stability and the assembly precision of frock to the fitting surface between the axle sleeve formula structure.

Most of large-scale spacecraft cabin main structures are throat formula structures, and both ends export size is less than middle column diameter size far away, and integral circumferential weld welding frock just faces the problem that can't follow cabin internal portion and take out after the welding is accomplished finally.

Disclosure of Invention

The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the flexible large-diameter girth welding tool capable of being rapidly disassembled is provided, and the problems that the traditional column section girth welding tool is difficult to move, poor in stability, low in assembly efficiency and the like are solved.

The technical scheme of the invention is as follows: a guide rail type large cabin body column section girth welding tool comprises a square shaft, a fixed flange, a shaft sleeve flange, an inner frame, an outer frame and an outer support arc block assembly; the whole tool is of a detachable circumferentially and uniformly distributed structure, and is a square shaft from inside to outside and comprises a square shaft, a fixed flange, a shaft sleeve flange, an inner frame, an outer frame and an outer arc supporting block assembly; the square shaft is positioned at the center of the whole tool; a connecting flange is welded at any end of the square shaft to realize the assembly and fixation with the welding system positioner, and four parallel linear guide rails are distributed on four sides and used for the smooth movement of the whole tool along the axial direction; four sliding blocks are distributed on the inner side of the fixed flange to realize connection with a linear guide rail on the square shaft and move smoothly along the axial direction; the inner frame, the outer frame and the shaft sleeve flange are connected through the hinged hole bolts in sequence to provide the functions of radiation type expansion and repeated disassembly; the outer arc supporting block assembly is uniformly distributed on the periphery of the outermost periphery and connected with the outer frame, and a mechanical screw rod is arranged on the outer arc supporting block assembly to stretch out and draw back the arc blocks so as to meet the jacking assembly of the annular welding line of the column section.

The square shaft is a square steel shaft and is formed by processing square steel, and 1 linear guide rail is respectively assembled on each of four side surfaces through bolts and used for linear sliding of the whole girth welding tool on the square shaft; and one connecting flange is welded at any end of the square shaft and used for assembling and fixing the welding system positioner.

The fixed flange is a cast steel structure flange with a square inner surface and a square outer surface, four side surfaces in the fixed flange are provided with sliding blocks through bolts, and the sliding blocks are matched with a linear guide rail on a square shaft to realize that the shaft sleeve flange slides on the guide rail along a straight line; the outer cylindrical surface of the fixed flange is matched with the inner cylindrical surface of the shaft sleeve flange, and the fixed flange is assembled and fixed with the shaft sleeve flange through the end face whole circle of bolts.

The shaft sleeve flange is a cast steel structure flange, an inner cylindrical surface is matched with an outer cylindrical surface of the fixed flange, the end surface is assembled and fixed with the end surface of the fixed flange through a whole circle of bolts, n assembling surfaces are uniformly distributed on the outer side surface, and the n assembling surfaces are assembled and fixed with n inner frames through bolts.

The outer arc supporting block assembly comprises an aluminum alloy arc supporting block, a guide rod assembly and a lead screw assembly; the diameter of the outer circular arc of the aluminum alloy arc supporting block is consistent with the diameter of the inner diameter of the circular seam of the welded cabin body, so that the inner supporting effect of parts to be welded in the assembling and welding process is realized; the lead screw assembly is rotated, so that the aluminum alloy arc-shaped supporting block can move in the radial direction, and the purposes of assembling before welding and quickly disassembling the tool after welding are achieved; and the guide rod assemblies assembled on two sides of the aluminum alloy arc-shaped supporting block are used for ensuring the stability of the radial moving process of the aluminum alloy arc-shaped supporting block.

A method for quickly disassembling flexible large-diameter girth welding pre-assembly by using the guide rail type large cabin body column section girth welding tool comprises the following steps:

1) firstly, assembling and fixing a square shaft on a positioner of a welding system, then assembling a fixed flange on the square shaft through a sliding block and realizing the assembly with a linear guide rail, and assembling and connecting the fixed flange with a shaft sleeve flange through a bolt;

2) assembling and fixing the n inner frames and the 2n outer frames with the shaft sleeve flange arranged in the central area in sequence by using bolts;

3) adjusting a screw rod assembly on the outer arc supporting block assembly to a minimum stroke position;

4) the assembly of the parts to be welded is completed, and then the screw rod assembly on the outer arc supporting block assembly is adjusted outwards to ensure that the parts to be welded are supported tightly;

5) after the product is welded, the screw rod assembly on the outer arc supporting block assembly is adjusted to the minimum stroke position, the outer arc supporting block assembly is disassembled, then the outer frame and the inner frame are disassembled in sequence, and finally the square shaft is safely withdrawn from the inside of the product, so that the flexible assembly welding of the large-diameter cabin column section circular seam and the quick assembly and disassembly of the welding tool are realized in the whole process.

The square shaft is a square steel shaft and is formed by processing square steel, and four side surfaces are respectively assembled with a linear guide rail through bolts and used for linear sliding of the whole girth welding tool on the square shaft; and one connecting flange is welded at any end of the square shaft and used for assembling and fixing the welding system positioner.

The fixed flange is a cast steel structure flange with a square inner surface and a square outer surface, four side surfaces in the fixed flange are provided with sliding blocks through bolts, and the sliding blocks are matched with a linear guide rail on a square shaft to realize that the shaft sleeve flange slides on the guide rail along a straight line; the outer cylindrical surface of the fixed flange is matched with the inner cylindrical surface of the shaft sleeve flange, and the fixed flange is assembled and fixed with the shaft sleeve flange through the end face whole circle of bolts.

The shaft sleeve flange is a cast steel structure flange, an inner cylindrical surface is matched with an outer cylindrical surface of the fixed flange, the end surface is assembled and fixed with the end surface of the fixed flange through a whole circle of bolts, n assembling surfaces are uniformly distributed on the outer side surface, and the n assembling surfaces are assembled and fixed with n inner frames through bolts.

The outer arc supporting block assembly comprises an aluminum alloy arc supporting block, a guide rod assembly and a lead screw assembly; the diameter of the outer circular arc of the aluminum alloy arc supporting block is consistent with the diameter of the inner diameter of the circular seam of the welded cabin body, so that the inner supporting effect of parts to be welded in the assembling and welding process is realized; the lead screw assembly is rotated, so that the aluminum alloy arc-shaped supporting block can move in the radial direction, and the purposes of assembling before welding and quickly disassembling the tool after welding are achieved; and the guide rod assemblies assembled on two sides of the aluminum alloy arc-shaped supporting block are used for ensuring the stability of the radial moving process of the aluminum alloy arc-shaped supporting block.

Compared with the prior art, the invention has the advantages that: aiming at girth welding of a cabin body structure of a large-diameter spacecraft, parallel guide rails are arranged on four side surfaces of a square shaft in the center position in the design of a large-size column section girth welding tool, so that the whole tool can be ensured to move smoothly along the square shaft. In addition, the tool main body structure adopts a modular structure design, can be quickly disassembled, has the characteristics of flexible assembly and disassembly, is high in repeated assembly precision, stable in overall structure and good in rigidity, can provide effective radial welding pretightening force according to the actual weld crater diameter sizes of different products, can flexibly adjust the pretightening force as required, and ensures that the welding assembly requirements are met.

The flexible large-diameter circular seam assembling device capable of being rapidly disassembled solves the problems that a traditional column section circular seam welding tool is difficult to move, poor in stability, low in assembling efficiency and the like, achieves efficient and high-quality assembling of large spacecraft cabin column section circular welding, can remarkably improve the circular seam welding production efficiency, and effectively guarantees the circular seam welding quality.

The assembling device capable of being rapidly disassembled and having the advantages of flexible assembling and disassembling can be suitable for assembling and welding the circular weld of the column section of the large-diameter spacecraft, and can also be used for carrying out adaptive modification design aiming at the structural characteristics of other similar structural products, so that the assembling requirement before circular weld of similar structural products with different sizes is met.

Drawings

FIG. 1 shows a schematic diagram of a guide rail type large cabin column section girth welding tool according to the invention;

FIG. 2 shows a schematic diagram of a square shaft according to the present invention

FIG. 3 shows a schematic view of the outer arc block assembly of the present invention.

Detailed Description

The invention relates to a guide rail type large cabin body column section girth welding tool which comprises a square shaft 1, a fixed flange 2, a shaft sleeve flange 3, an inner frame 4, an outer frame 5 and an outer supporting arc block assembly 6, wherein the square shaft is fixedly connected with the fixed flange; the whole tool is of a detachable circumferentially and uniformly distributed structure, and is a square shaft from inside to outside and comprises a square shaft 1, a fixed flange 2, a shaft sleeve flange 3, an inner frame 4, an outer frame 5 and an outer arc supporting block assembly 6; wherein the square shaft 1 is positioned at the center of the whole tool; a connecting flange is welded at any end of the square shaft 1 to realize the assembly and fixation with a welding system positioner, and four parallel linear guide rails are distributed on four sides and used for the smooth movement of the whole tool along the axial direction; four sliding blocks are distributed on the inner side of the fixed flange 2 to realize connection with a linear guide rail on the square shaft 1 and move smoothly along the axial direction; the inner frame 4, the outer frame 5 and the shaft sleeve flange 3 are connected through the hinge hole bolts in sequence to provide the functions of radiation type expansion and repeated disassembly; the outermost circumference equipartition outer arc piece subassembly 6 is connected with frame 5, thereby is provided with mechanical lead screw on the outer arc piece subassembly 6 and realizes the flexible tight assembly in top that satisfies the column segment circumferential weld of arc piece.

The square shaft 1 is a square steel shaft and is formed by processing square steel, and 1 linear guide rail is respectively assembled on each of four side surfaces through bolts and used for linear sliding of the whole girth welding tool on the square shaft; and any end of the square shaft 1 is welded with a connecting flange for assembling and fixing with a welding system positioner.

The fixed flange 2 is a cast steel structure flange with a square inner part and a round outer part, four side surfaces in the fixed flange are provided with slide blocks through bolts, and the slide blocks are matched with a linear guide rail on the square shaft 1 to realize that the shaft sleeve flange 3 slides on the guide rail along a straight line; the outer cylindrical surface of the fixed flange 2 is matched with the inner cylindrical surface of the shaft sleeve flange 3, and the assembly and the fixation between the fixed flange and the shaft sleeve flange 3 are realized through the end face whole-circle bolt.

The shaft sleeve flange 3 is a cast steel structure flange, an inner cylindrical surface is matched with an outer cylindrical surface of the fixed flange 2, the end surface is assembled and fixed with the end surface of the fixed flange 2 through a whole circle of bolts, n assembling surfaces are uniformly distributed on the outer side surface, and the assembling and fixing are carried out through bolts and n inner frames.

The inner frame 4 is of a frame-shaped structure of cast aluminum, n inner frames 4 are uniformly distributed on the whole circle of the tool, adjacent inner frames are fixedly connected through bolts, and the n inner frames 4 are fixedly assembled with the shaft sleeve flange 3 arranged at the central position through bolts.

The outer frames 5 are frame-shaped structures of cast aluminum and serve as epitaxial structures of the inner frames 4, the whole tool is in a closed annular structure formed by assembling and connecting 2n outer frames 5, and the outer frames are connected and fixed with one another through bolts; the outer frame 5 and the inner frame 4 are assembled and fixed through bolts, and the stability of the whole system is ensured.

The outer arc supporting block assembly 6 comprises an aluminum alloy arc supporting block 6-1, a guide rod assembly 6-2 and a lead screw assembly 6-3; the diameter of the outer circular arc of the aluminum alloy arc-shaped supporting block 6-1 is consistent with the diameter of the inner diameter of the circular seam of the welded cabin body, so that the inner supporting effect of parts to be welded in the assembling and welding process is realized; the lead screw assembly 6-2 is rotated, so that the aluminum alloy arc-shaped supporting block 6-1 can move in the radial direction, and the purposes of assembling before welding and quickly disassembling the tool after welding are achieved; the guide rod assemblies 6-3 assembled on the two sides of the aluminum alloy arc-shaped supporting block 6-1 are used for ensuring the stability of the radial moving process of the aluminum alloy arc-shaped supporting block 6-1.

A method for quickly disassembling flexible large-diameter girth welding pre-assembly by using the guide rail type large cabin body column section girth welding tool comprises the following steps:

1) firstly, a square shaft 1 is assembled and fixed on a positioner of a welding system, then a fixed flange 2 is assembled on the square shaft through a sliding block (the assembly between the fixed flange and a linear guide rail is realized, and the fixed flange 2 is assembled and connected with a shaft sleeve flange 3 through a bolt;

2) assembling and fixing the n inner frames 4 and the 2n outer frames 5 and the shaft sleeve flange 3 arranged in the central area in sequence by using bolts;

3) adjusting a screw rod assembly on the outer arc supporting block assembly 6 to a minimum stroke position;

4) the assembly of the parts to be welded is completed, and then the screw rod assembly on the outer arc supporting block assembly 6 is adjusted outwards to ensure that the parts to be welded are supported tightly;

5) accomplish the product welding back, adjust the lead screw subassembly on the outer arc piece subassembly 6 back to minimum stroke position, pull down outer arc piece subassembly 6, then pull down frame 5 and inside casing 4 in proper order, withdraw from square shaft 1 from the inside safety of product at last to whole flexible assembly welding and the quick assembly and the dismantlement of welding frock of realizing major diameter cabin body column segment circumferential weld.

The present invention will be described in detail below with reference to the accompanying drawings.

The guide rail type large cabin column section girth welding tool is shown in figure 1, the square shaft is a square steel shaft (shown in figure 2) and is located at the center of the tool, and 4 parallel linear guide rails are distributed on the four sides of the square shaft and used for enabling the whole tool to move smoothly along the axial direction. The column segment girth welding frock is detachable circumference equipartition structure, from interior to outer by 1 axle sleeve flange respectively, 1 mounting flange, n inside casing, 2n frame and 2n outer arc piece subassembly constitute, and wherein axle sleeve flange inboard cloth has 4 sliders to realize with the square shaft on the guide rail be connected and along axial smooth movement, inside casing, frame and mounting flange loop through the reamed hole bolted connection provide the radial expansion function to repeatedly the dismantlement. The outermost periphery is that 2n outer arc piece subassemblies (as figure 3) of circumference equipartition are connected with the frame, thereby has mechanical lead screw to realize the tight assembly in top of arc piece's flexible post section annular weld of realization on the outer arc piece.

The square shaft, the material of axle sleeve flange and mounting flange are the steel in the whole set of frock, guarantee the sufficient rigidity and the stability of whole set of frock, the inside casing, frame and outer arc piece are the aluminum alloy, realize subtracting heavy purpose, the connection between slider and the guide rail has guaranteed that the frock can wholly be at the epaxial smooth movement of square, operator one hand can easily promote, and smooth movement has guaranteed sufficient stability, can not influence the precision of product welding assembly, from a plurality of cabin body welding conditions that have accomplished, adopt behind this kind of large-scale cabin body column segment circumferential weld frock of guide tracked, product assembly speed is showing and is improving, assembly quality is reliable and stable, the repeatable assembly precision obviously improves, both made things convenient for assembly operation, the assembly quality of product has also fine simultaneously guaranteed, thereby production efficiency and welding seam quality stability have directly been improved.

The whole set of tool system comprises: 1) a square shaft (comprising a square steel shaft main body, a linear guide rail and a connecting flange); 2) a fixed flange; 3) a shaft sleeve flange; 4) an inner frame; 5) an outer frame; 6) the outer arc supporting block assembly (comprising an aluminum alloy arc supporting block, a guide rod assembly and a lead screw assembly).

Square shaft

The square shaft is formed by processing a square steel shaft main body (with the thickness of 20mm) with the length and width specification of 200mm multiplied by 200mm, and the length L (L is L ═ L)₀+400, unit: mm, wherein L₀The length of the welded cabin column section assembly), and 1 linear guide rail is respectively assembled on the four side faces through bolts and used for linear sliding of the whole girth welding tool on the square shaft. And one connecting flange is welded at any end of the square shaft and used for assembling and fixing the welding system positioner.

Fixing flange

The fixed flange is a cast steel structure flange with an inner square and an outer circle, four inner side faces are provided with sliding blocks through bolts, and the sliding blocks are matched with a guide rail on a square shaft to realize that the fixed flange slides on the guide rail along a straight line. The outer cylindrical surface of the fixed flange is matched with the inner cylindrical surface of the shaft sleeve flange, and the fixed flange is assembled and fixed with the shaft sleeve flange through the end face whole circle of bolts.

Shaft sleeve flange

The shaft sleeve flange is a cast steel structure flange, an inner cylindrical surface is matched with an outer cylindrical surface of the fixed flange, the end surface is assembled and fixed with the end surface of the fixed flange through a whole circle of bolts, n assembling surfaces are uniformly distributed on the outer side surface, and the n assembling surfaces are assembled and fixed with n inner frames through bolts.

Inner frame

The inner frame is a frame-shaped structure of cast aluminum, n inner frames are uniformly distributed in a whole circle of the ring welding tool through the design of a size chain, adjacent inner frames are fixedly connected through bolts, and the n inner frames and the shaft sleeve flange arranged at the central position are fixedly assembled through bolts.

Outer frame

The outer frame is the frame-shaped structure of cast aluminium similarly, as the epitaxial structure of inner frame, and through the design of size chain, the whole circle adopts 2n outer frames to assemble each other and connects and form closed annular structure, and is fixed through bolted connection between each other. The outer frame and the inner frame are assembled and fixed through bolts, and the stability of the whole system is ensured.

External supporting arc block assembly

The outer arc supporting block assembly is formed by assembling an aluminum alloy arc supporting block, a guide rod assembly and a lead screw assembly, the arc diameter size of the aluminum alloy arc supporting block is consistent with the inner diameter size of the welded cabin body circular seam, the inner supporting effect of parts to be welded in the assembling and welding process is achieved, the aluminum alloy arc supporting block is moved in the radial direction through the lead screw assembly, and therefore the purpose of assembling before welding and quickly disassembling the tool after welding is achieved. And the two sets of guide rod components arranged on the two sides of the screw rod component are mainly used for ensuring the stability of the radial movement of the aluminum alloy arc-shaped supporting block.

Fig. 1-3 show the overall structural schematic diagram of the guide rail type large cabin column section girth welding tool according to the embodiment of the invention.

Firstly, assembling and fixing a square shaft on a positioner of a welding system, then assembling a shaft sleeve flange on the square shaft through a sliding block and realizing the assembly with a guide rail, and assembling and connecting the shaft sleeve flange with a fixed flange through a bolt;

assembling and fixing the n inner frames and the 2n outer frames with the central area fixing flange in sequence by using bolts;

adjusting a lead screw on the outer arc supporting block assembly to a minimum stroke position, so as to facilitate product assembly;

the assembly of the parts to be welded in the column section girth welding is completed, and then the lead screw on the outer arc supporting block assembly is slowly adjusted outwards to ensure that the parts to be welded are tightly supported;

after the product is welded, the screw rod on the outer supporting arc block assembly is adjusted to the minimum stroke position, the outer supporting arc block assembly is disassembled, then the outer frame and the inner frame are disassembled in sequence, and finally the square shaft is safely withdrawn from the inside of the product, so that the flexible assembly welding of the large-diameter cabin column section circular seam and the quick assembly and disassembly of the welding tool are realized in the whole process.

Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.