Auxiliary tool for ring beam welding
By using the limiting structure and abutment components of the ring beam welding auxiliary tooling, the problem of misalignment of arc-shaped parts during welding was solved, weld alignment was achieved, and welding quality and efficiency were improved.
Patent Information
- Application Number
- CN202511234103.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-29
- Publication Date
- 2025-11-07
AI Technical Summary
During the welding of the ring beam, adjacent arc-shaped parts may become misaligned due to thermal stress, affecting weld alignment and reducing welding quality.
A ring beam welding auxiliary tooling is adopted, including a limiting structure and abutment components. The limiting and abutment components abut the pre-welded parts at multiple points to resist thermal stress deformation and ensure weld alignment.
It effectively resists thermal stress deformation, ensures the alignment of weld seams on adjacent curved parts, and improves welding quality and efficiency.
Smart Images
Figure CN120901602A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of construction, in particular to a circle beam welding auxiliary tool. BACKGROUND
[0002] The circle beam is a kind of structural member commonly used in construction, mainly used to enhance the overall stability and seismic performance of the building.
[0003] Due to the large size of the circle beam, the circle beam is composed of multiple arc-shaped parts. The common manufacturing process is to place multiple arc-shaped parts on the ground and spot weld the weld seams between the multiple arc-shaped parts, so as to splice the multiple arc-shaped parts into a pre-welded part in the shape of a circle beam, and then further weld the weld seams inside the pre-welded part by means of manual arc welding to form the circle beam.
[0004] However, during the further welding process, thermal stress is generated during the welding process, which causes the pre-welded part to deform, resulting in misalignment of the adjacent arc-shaped parts inside the pre-welded part, and further causing the weld seams between the adjacent arc-shaped parts to be misaligned, affecting the subsequent welding process. SUMMARY
[0005] The present application provides a circle beam welding auxiliary tool to solve the problem of misalignment of adjacent arc-shaped parts inside the pre-welded part during the welding process.
[0006] In one aspect, the present application provides a circle beam welding auxiliary tool, comprising:
[0007] a base;
[0008] at least one set of limiting structures, the limiting structure comprising a set of limiting components and at least one set of abutting components; the limiting component is arranged on the base;
[0009] Each set of limiting components includes at least two limiting members, and a limiting space is formed between the two limiting members; the limiting space is suitable for accommodating the pre-welded part;
[0010] Each set of abutting components includes two abutting members, and each set of abutting members is arranged on two limiting members; the two abutting members of the same set are arranged on both sides of the pre-welded part and abut the pre-welded part.
[0011] The present application provides a circle beam welding auxiliary tool, the abutting member comprising:
[0012] an abutting body, the abutting body being suitable for connecting with the limiting member;
[0013] an abutting portion, the abutting portion being arranged on the abutting body; the side surface of the pre-welded part on both sides is an end surface; the abutting portion is suitable for rolling connection and abutting with the end surface of the pre-welded part.
[0014] The application provides a circle beam welding auxiliary tool, and the abutting part comprises a roller.
[0015] The application provides a circle beam welding auxiliary tool, and the abutting part comprises a roller.
[0016] The fixing part is used for connecting the limiting part and the abutting body, and the abutting body is adapted to move relative to the fixing part so as to adjust the relative position of the abutting part and the pre-welding part.
[0017] The application provides a circle beam welding auxiliary tool, and a through hole is formed in the fixing part, and part of the abutting body is adapted to pass through the through hole.
[0018] The application provides a circle beam welding auxiliary tool, and a through hole is formed in the fixing part, and part of the abutting body is adapted to pass through the through hole.
[0019] The application provides a circle beam welding auxiliary tool, and at least two adjusting parts are arranged on two sides of the fixing part respectively and are adapted to be connected with the abutting body; the abutting body is connected with the fixing part through the two adjusting parts, and the relative position of the abutting part and the pre-welding part is adjusted by adjusting the position of the adjusting part on the abutting body.
[0020] The application provides a circle beam welding auxiliary tool, and at least two adjusting parts are arranged on two sides of the fixing part respectively and are adapted to be connected with the abutting body; the abutting body is connected with the fixing part through the two adjusting parts, and the relative position of the abutting part and the pre-welding part is adjusted by adjusting the position of the adjusting part on the abutting body.
[0021] The application provides a circle beam welding auxiliary tool, and at least one reinforcing part plate is adapted to be connected with the fixing part and the limiting part respectively.
[0022] The application provides a circle beam welding auxiliary tool, and the limiting part comprises a limiting rod arranged vertically; and the gap between the two limiting rods forms the limiting space.
[0023] The application provides a circle beam welding auxiliary tool, and at least one reinforcing part plate is adapted to be connected with the fixing part and the limiting part respectively.
[0024] The application provides a circle beam welding auxiliary tool, and at least one driving structure is arranged on the base; and the driving structure is adapted to drive the pre-welding part to rotate.
[0025] The application provides a circle beam welding auxiliary tool, and at least one reinforcing part plate is adapted to be connected with the fixing part and the limiting part respectively.
[0026] The application provides a circle beam welding auxiliary tool, and at least one working platform is adapted to be connected with the limiting assembly; and a welding device is arranged on the working platform.
[0027] The application provides a circle beam welding auxiliary tool, and the working platform is arranged on the top of the pre-welding part.
[0028] The application provides a circle beam welding auxiliary tool, and at least one reinforcing part plate is adapted to be connected with the fixing part and the limiting part respectively.
[0029] The application provides a circle beam welding auxiliary tool, and at least one reinforcing part plate is adapted to be connected with the fixing part and the limiting part respectively.
[0030] The circle beam welding auxiliary tool provided by the application comprises a base and at least one set of limiting structures, the limiting structure comprises a set of limiting components and at least one set of abutting components, the limiting component comprises at least two limiting pieces, and a limiting space is formed between the two limiting pieces; the abutting component comprises two abutting pieces, the two abutting pieces of the same set are arranged opposite to the two sides of the pre-welding piece and abut against the pre-welding piece; through the at least one set of limiting structures, the abutting of the pre-welding piece at multiple positions can be realized, after the abutting of the pre-welding piece, the pre-welding piece is limited and cannot change the shape, so that the abutting and limiting mode can resist the deformation force of the pre-welding piece caused by thermal stress, so that the welds between the adjacent arc-shaped parts can be aligned, and the subsequent welding process is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0031] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.
[0032] Figure 1 The overall structure schematic diagram of the circle beam welding auxiliary tool provided by the embodiment of the application is shown in the figure.
[0033] Figure 2 For Figure 1 The enlarged view of A in the figure.
[0034] Reference signs:
[0035] 100, limiting structure; 110, limiting component; 111, limiting piece; 1111, limiting rod; 1110, limiting space; 120, abutting component; 121, abutting piece; 1211, abutting body; 1212, abutting part; 1213, roller; 130, fixing piece; 140, adjusting piece; 150, reinforcing piece;
[0036] 200, driving structure;
[0037] 300, working platform;
[0038] 400, ladder;
[0039] 500, pre-welding piece;
[0040] 600, base;
[0041] Through the above drawings, the specific embodiments of the application have been shown, and more detailed descriptions will be given hereinafter. The drawings and the textual description are not intended to limit the scope of the concept of the application by any means, but to illustrate the concept of the application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0042] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements, unless the context clearly dictates otherwise. The following description of exemplary embodiments is not representative of all possible embodiments consistent with the present application. Instead, it is merely an example of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims.
[0043] First, the terms involved in the present application are explained:
[0044] Ring beam: a structural component commonly used in construction, mainly used to enhance the overall stability and seismic performance of the building.
[0045] Welding: welding is a process that makes two or more metal (or non-metal) materials permanently connected at the joint by heating, pressing or both.
[0046] Cage ring beam: cage ring beam refers to the ring-shaped load-bearing beam in the cage structure, which is the key horizontal component of the cage (large steel support frame), mainly used in pile foundation, offshore platform, industrial equipment installation and other scenes.
[0047] In the prior art, manual arc welding is the main welding method in the manufacturing process of the cage ring beam. However, due to the characteristics of large size, complex shape (mostly arc structure) and high welding precision requirement of the cage ring beam, the traditional welding method and simple tooling are difficult to meet the demand of high quality welding.
[0048] In the traditional welding operation, the positioning of the ring beam is often not accurate enough, which can easily lead to deviation of the welding position and affect the strength and sealing performance of the welded joint. Moreover, during the welding process, there is a lack of effective means to stabilize the ring beam, and the thermal stress generated during welding may cause the ring beam to deform, further reducing the product quality.
[0049] To solve the above problems, the present application provides a ring beam welding auxiliary tool, which can realize abutment at multiple positions on the pre-welding piece 500 through at least one set of limiting structure 100. After the pre-welding piece 500 is abutted, the pre-welding piece 500 is limited and cannot change shape, so the abutment limiting method can resist the deformation force of the pre-welding piece 500 caused by thermal stress, so that the welding seams between adjacent arc-shaped parts can be aligned, avoiding affecting the subsequent welding process.
[0050] The present application provides a ring beam welding auxiliary tool, mainly applied to the cage ring beam.
[0051] As Figure 1As shown, the circle beam welding auxiliary tooling includes a base 600 and at least one set of limiting structures 100, wherein the limiting structure 100 includes a set of limiting assemblies 110 and at least one set of abutting assemblies 120; the limiting assembly 110 is arranged on the base 600; each set of limiting assemblies 110 includes at least two limiting pieces 111, and a limiting space 1110 is formed between the two limiting pieces 111; the limiting space 1110 is suitable for accommodating the pre-welding piece 500; wherein each set of abutting assemblies 120 includes two abutting pieces 121, and each set of abutting pieces 121 is arranged on the two limiting pieces 111; the two abutting pieces 121 in the same group are arranged opposite to the two sides of the pre-welding piece 500 and abut against the pre-welding piece 500.
[0052] By means of the at least one set of limiting structures 100, the pre-welding piece 500 can be abutted at multiple positions, and after the pre-welding piece 500 is abutted, the pre-welding piece 500 is limited and cannot change shape, so that the abutting limiting mode can resist the deformation force generated by the thermal stress on the pre-welding piece 500, so that the welds between adjacent arc-shaped parts can be aligned, and the subsequent welding process is avoided.
[0053] It should be noted that the pre-welding piece 500 is a shape obtained by point welding adjacent arc-shaped parts into a circle beam, and in the embodiment, the arc-shaped part after point welding is referred to as the pre-welding piece 500.
[0054] Specifically, the pre-welding piece 500 is composed of four arc-shaped parts, and the number of arc-shaped parts can be changed according to actual needs, and the pre-welding piece 500 can also be composed of two arc-shaped parts or eight arc-shaped parts.
[0055] The arc-shaped part after point welding only plays a role in preliminary shaping, and if the arc-shaped part is not fixed, the thermal stress generated by welding in the subsequent welding process may cause the arc-shaped part to deform and damage the point welding structure, so that the welds between adjacent arc-shaped parts cannot be aligned,
[0056] Specifically, in the embodiment, since the pre-welding piece 500 is composed of four arc-shaped parts, each set of limiting structures 100 has two sets, each set of limiting structures 100 includes a set of limiting assemblies 110 and two sets of abutting assemblies 120, so that the number of abutting assemblies 120 corresponds to the number of arc-shaped parts, so that each arc-shaped part is fixed by the abutting assembly 120 through the abutting mode, and it is ensured that each arc-shaped part will not deform due to the action of thermal stress in the welding process.
[0057] As an alternative embodiment, the number of abutting assemblies 120 in each set of limiting structures 100 can be increased, and by increasing the number of abutting assemblies 120, the fixing effect is increased. For example, when the pre-welding piece 500 is composed of four arc-shaped parts, the limiting structure 100 includes one set of limiting structures 100 and four sets of abutting assemblies 120, and each arc-shaped part is fixed by two abutting assemblies 120. By increasing the number of abutting assemblies 120 at the same position of each arc-shaped part, the upper limit of the deformation resistance of the arc-shaped part is increased.
[0058] It should be noted that the number of limiting structures 100 can also be further increased, and by increasing the number of limiting structures 100, the abutting of the arc-shaped part at multiple positions can be achieved. For example, when the pre-welding piece 500 is composed of four arc-shaped parts, the limiting structure 100 has four sets, each set of limiting structure 100 includes one set of limiting assemblies 110 and two sets of abutting assemblies 120. At this time, there are two sets of abutting assemblies 120 abutting on the same arc-shaped part, and the two abutting assemblies 120 are located at different positions of the same arc-shaped part, and the abutting position can be adjusted by changing the position of the limiting assembly 110. By increasing the number of abutting assemblies 120 on each arc-shaped part, and the positions of the abutting assemblies 120 on each arc-shaped part are different, the effect of resisting the deformation of the arc-shaped part is increased.
[0059] Generally, when two abutting assemblies 120 abut at two same positions on the same arc-shaped part, the abutting assemblies 120 abut at the middle of the arc-shaped part, and when two abutting assemblies 120 abut at two different positions on the same arc-shaped part, the two abutting assemblies abut at the two ends of the arc-shaped part. The thermal stress generated by welding can cause the arc-shaped part to deform, and the welds at the two ends of the adjacent arc-shaped part cannot be aligned. Therefore, abutting the abutting assemblies 120 at the middle of the arc-shaped part can cause the middle of the arc-shaped part to deform, while the two ends of the arc-shaped part to deform. This phenomenon is called edge lifting. Therefore, compared with the arrangement mode in which two abutting assemblies 120 abut at two different positions on the same arc-shaped part, the arrangement mode in which two abutting assemblies 120 abut at two same positions on the same arc-shaped part can effectively avoid the phenomenon of edge lifting.
[0060] It should be noted that the above two forms can also be compared in the case of the same number of abutting assemblies 120 to further ensure the abutting effect. The above two forms can be integrated, that is, by increasing the number of abutting assemblies 120 at the same position of each arc-shaped part through the number of limiting assemblies 110 in each set of limiting structures 100, and by increasing the number of each set of limiting structures 100, the number of abutting positions of each arc-shaped part is increased, and the arc-shaped part is deformed under the action of thermal stress.
[0061] As Figure 2As shown, further, the application provides a circle beam welding auxiliary tool, wherein the abutting member 121 comprises an abutting body 1211 and an abutting part 1212, the abutting body 1211 is suitable to be connected with the limiting member 111, and the abutting part 1212 is arranged on the abutting body 1211, the two sides of the pre-welding member 500 are end faces, and the abutting part 1212 is suitable to be in rolling connection with the end faces of the pre-welding member 500 and abut against the end faces.
[0062] It should be noted that the pre-welding member 500 is arranged in the limiting space 1110 between the limiting members 111, the two sides of the pre-welding member 500 close to the limiting members 111 are end faces, and in the abutting process, the two abutting parts 1212 realize the clamping effect on the pre-welding member 500 by applying forces in opposite directions, so that the pre-welding member 500 cannot move in the plane perpendicular to the end faces.
[0063] Specifically, the pre-welding member 500 can rotate along the center of itself in the plane where the end faces are located, and the position of the weld joint between adjacent arc-shaped parts can be freely changed by rotating the pre-welding member 500. In the prior art, the pre-welding member 500 is usually fixed and different, and workers need to carry welding equipment to weld each weld joint, which requires frequent movement and consumes time and effort. By allowing the pre-welding member 500 to rotate, workers do not need to move frequently, which reduces labor intensity and increases work efficiency.
[0064] Further, the application provides a circle beam welding auxiliary tool, wherein the abutting part 1212 comprises a roller 1213.
[0065] It should be noted that since the pre-welding member 500 needs to rotate, in order to ensure that the roller 1213 can be in rolling connection with the pre-welding member 500, attention should be paid to the orientation direction of the roller 1213, or the roller 1213 is selected to be a universal wheel, which can freely turn 360° and roll in any direction; the abutting part 1212 is selected to be a roller 1213, and by adjusting the relative position between the roller 1213 and the pre-welding member 500, the abutting part 1212 can abut while adapting to the rolling of the pre-welding member 500.
[0066] As an alternative embodiment, the abutting part 1212 can also be selected to be a ball structure, which has a lower friction coefficient and a higher transmission efficiency than the roller 1213.
[0067] Further, the application provides a circle beam welding auxiliary tool, further comprising a fixing member 130, the fixing member 130 is used to connect the limiting member 111 and the abutting body 1211, and the abutting structure is suitable to move relative to the fixing member 130 to adjust the relative position between the abutting part 1212 and the pre-welding member 500.
[0068] Specifically, the fixing piece 130 plays a connecting role, and the fixing piece 130 is generally made of a steel plate. One side of the fixing piece 130 is fixedly connected with the limiting piece 111, and the fixed connection can be in the form of welding connection or adhesive connection.
[0069] Further, the present application provides a circle beam welding auxiliary tool, wherein a through hole is formed in the fixing piece 130, and the part of the abutting body 1211 adapted to pass through the through hole; the circle beam welding auxiliary tool further comprises at least two adjusting pieces 140, the adjusting pieces 140 are respectively arranged on both sides of the fixing piece 130, and are adapted to be connected with the abutting body 1211. The position of the abutting body 1211 on the abutting body 1211 is adjusted through the adjusting pieces 140, so as to adjust the relative position of the abutting part 1212 and the pre-welding piece 500.
[0070] Specifically, the abutting body 1211 is a screw, and the adjusting piece 140 is a nut. One of the nuts is first sleeved on the screw, and then the end of the screw away from the nut is inserted into the through hole. Then, the other nut is sleeved on the screw, and then the two nuts are moved close to each other by rotating, so as to clamp the fixing piece 130 between the two nuts. Since the nut is threadedly connected with the screw, and the two nuts fix the fixing piece 130 between the two nuts, the fixed connection between the fixing piece 130 and the screw is realized. By rotating the two nuts in the same direction, the two nuts can be moved on the screw synchronously. At this time, the screw moves in the vertical direction relative to the plane where the fixing piece 130 is located. By adjusting the position of the two nuts on the screw, the length of the screw passing through the through hole can be controlled. Since the screw extends in the direction towards the pre-welding piece 500, during the adjustment of the nut, the screw moves close to or away from the pre-welding piece 500.
[0071] The abutting part 1212 is arranged on the abutting body 1211, and the abutting part 1212 moves close to or away from the pre-welding piece 500 along with the abutting body 1211, so as to adjust the pressure between the abutting part 1212 and the pre-welding piece 500. For example, when the abutting part 1212 moves towards the pre-welding piece 500, the pressure between the abutting part 1212 and the pre-welding piece 500 increases. When the abutting part 1212 moves away from the pre-welding piece 500, the pressure between the abutting part 1212 and the pre-welding piece 500 decreases.
[0072] As an alternative embodiment, the abutting body 1211 can control the relative position of the abutting part 1212 and the pre-welding piece 500 through a telescopic rod. Specifically, the telescopic motor is fixed on the fixing piece 130, and the output end of the telescopic motor is connected with the abutting part 1212. During the operation of the telescopic motor, the abutting part 1212 is driven to move close to or away from the pre-welding piece 500.
[0073] The circle beam welding auxiliary tool provided by the present application further comprises at least one reinforcing piece 150, and the reinforcing piece 150 is adapted to be connected with the fixing piece 130 and the limiting piece 111, respectively.
[0074] Specifically, the reinforcing piece 150 is selected from a common steel plate, and the reinforcing principle of the reinforcing piece 150 is essentially to improve the overall strength by optimizing the structural stress performance. In the embodiment, the reinforcing piece 150 is a triangular plate, and two adjacent sides of the reinforcing piece 150 are connected with the fixing piece 130 and the limiting piece 111 respectively, thereby playing a role in improving the overall strength.
[0075] In the embodiment, the reinforcing piece 150 has one, because the overall strength of one reinforcing piece 150 is sufficient in conventional use, and as an alternative embodiment, the number of reinforcing pieces 150 can be reasonably increased as needed, thereby further improving the overall strength.
[0076] Further, the limiting piece 111 includes vertically arranged limiting rods 1111, and the gap between the two limiting rods 1111 forms a limiting space 1110. Since the limiting rods 1111 are vertically arranged, the pre-welding piece 500 also needs to be vertically arranged; it should be noted that in the prior art, the pre-welding piece 500 is arranged on the ground, and vertical arrangement greatly reduces the floor area compared with arrangement on the ground, and can work on multiple pre-welding pieces 500 in limited space.
[0077] Specifically, the end of the limiting rod 1111 can be fixed with the base 600 by welding, or can be fixed by bonding or bolts.
[0078] It should be noted that the gap between the two limiting rods 1111 only needs to be slightly larger than the thickness of the pre-welding piece 500, and by reducing the gap between the two limiting rods 1111, the abutting portion 1212 can be adjusted only by a small amount to satisfy the abutting of the abutting portion 1212 and the pre-welding piece 500.
[0079] The ring beam welding auxiliary tool provided in the application further includes at least one driving structure 200, and the driving structure 200 is arranged on the base 600; the driving structure 200 is suitable for driving the arc-shaped part to rotate.
[0080] Specifically, the driving structure 200 has two; the two driving structures 200 are specifically driving wheel assemblies, and the driving wheel assembly includes a driving wheel and the base 600, the driving wheel directly abuts the outer side wall of the pre-welding piece 500, and in the process of rotating the driving wheel, the driving wheel drives the pre-welding piece 500 to rotate synchronously through friction. By driving the pre-welding piece 500 to rotate through the driving wheel, the worker can avoid holding the welding equipment to work on the weld between each arc-shaped part, and by rotating the pre-welding piece 500, the worker can move the next weld to the vicinity of the worker after completing work on a weld, thereby improving the work efficiency and work strength of the worker.
[0081] In a possible implementation, the ring beam welding auxiliary tool further comprises at least one working platform 300, the working platform 300 is adapted to be connected with the limiting assembly 110, and the welding equipment is adapted to be arranged on the working platform 300. By arranging the working platform 300, the welding equipment can be installed on the working platform 300 by the worker.
[0082] It should be noted that the welding equipment can be a ring seam welding equipment, which is an automatic welding equipment specially used for welding a circular or ring-shaped welding seam, and high-quality ring-shaped welding seam continuous welding is realized by precisely controlling workpiece rotation and welding parameters. By replacing the traditional manual welding with the ring seam welding equipment, the advantages of automatic continuous welding, stepless speed adjustment, high-speed post-welding reset, and production efficiency improvement are achieved.
[0083] For example, the working platform 300 can have two, and the two working platforms 300 are arranged at the bottom and the top of the pre-welding piece 500 respectively. The two working platforms 300 can be provided with welding equipment, so as to improve the overall welding efficiency.
[0084] In a possible implementation, the ring beam welding auxiliary tool further comprises a ladder 400, and the ladder 400 is adapted to be connected with the working platform 300. Specifically, one end of the ladder 400 can be connected with the working platform 300 in a welded manner, and the worker can climb the ladder 400 to reach the working platform 300, so as to facilitate the later maintenance of the working platform 300.
[0085] For example, the ladder 400 is specifically a vertical ladder with an arc-shaped protective cage. The cage structure guides the personnel to climb in the middle, reducing the risk of tilting.
[0086] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.
[0087] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application.
Claims
1. A girth beam welding auxiliary tool characterized by, The application relates to a welding device, which comprises the following components: a base (600); at least one set of limiting structures (100), which comprises a set of limiting components (110) and at least one set of abutting components (120); the limiting components (110) are arranged on the base (600); each set of the limiting components (110) comprises at least two limiting members (111), and a limiting space (1110) is formed between the two limiting members (111); the limiting space (1110) is suitable for accommodating a pre-welding member (500); each set of the abutting components (120) comprises two abutting members (121), and each set of the abutting members (121) is arranged on two limiting members (111) correspondingly; the two abutting members (121) in the same set are arranged oppositely on two sides of the pre-welding member (500) and abut against the pre-welding member (500).
2. The girth welding aid of claim 1, wherein, The abutting member (121) comprises: an abutting body (1211) suitable for being connected with the limiting member (111); an abutting part (1212) arranged on the abutting body (1211); the side surface of the pre-welding member (500) on two sides is an end surface; the abutting part (1212) is suitable for being connected with the end surface of the pre-welding member (500) in a rolling mode and abutting.
3. The girth welding aid of claim 2, wherein, The abutting part (1212) comprises a rolling wheel (1213).
4. The girth welding aid of claim 2, wherein, Further comprising: a fixing member (130) used for connecting the limiting member (111) and the abutting body (1211); the abutting body (1211) is suitable for moving relative to the fixing member (130) so as to adjust the relative position of the abutting part (1212) and the pre-welding member (500).
5. The girth welding aid of claim 4, wherein, A through hole is formed in the fixing member, and part of the abutting body (1211) is suitable for penetrating through the through hole; Further comprising: at least two adjusting members (140), which are arranged on two sides of the fixing member (130) respectively and are suitable for being connected with the abutting body (1211); the abutting body (1211) is connected with the fixing member (130) through the two adjusting members (140), and the relative position of the abutting part (1212) and the pre-welding member (500) is adjusted by adjusting the position of the adjusting member (140) on the abutting body (1211).
6. The girth welding aid of claim 4, wherein, Further comprising: at least one reinforcing member (150) suitable for being connected with the fixing member (130) and the limiting member (111) respectively.
7. The girth welding aid of any one of claims 1-6, wherein, The limiting member (111) comprises a limiting rod (1111) arranged vertically; a gap between the two limiting rods (1111) forms the limiting space (1110).
8. The girth welding aid of any one of claims 1-6, wherein, Further comprising: at least one driving structure (200) arranged on the base (600); The driving structure (200) is suitable for driving the pre-welding member (500) to rotate.
9. The girth welding aid of any one of claims 1-6, wherein, Further comprising: At least one working platform (300) is adapted to be connected with the limiting assembly (110); a welding device is adapted to be arranged on the working platform (300).
10. The girth welding aid of claim 9, wherein, The working platform is arranged on the top of the pre-welding part. Further comprising: A ladder (400) is adapted to be connected with the working platform (300).