A tool for large span coaxial welding

Abstract

The utility model provides a kind of tooling for large-span coaxial welding, comprising: crossbeam, side plate, positioning shaft, first limit block, second limit block, each fixed one side plate in the crossbeam both ends, each installation one detachable positioning shaft on two side plates, two positioning shafts are oppositely arranged and common central axis, first limit block, second limit block are detachably installed on the crossbeam;The positioning shaft includes locating seat, locating ring, the locating seat, locating ring is cylinder, locating seat and locating ring common central axis, the end of locating seat is located in locating ring, the diameter of locating ring is less than the diameter of locating seat.The utility model provides a kind of tooling for large-span coaxial welding, solves the problem that the coaxiality of two circular tubes cannot be guaranteed in the large-span welding of prior art.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, and in particular to a tooling for large-span coaxial welding. Background Technology

[0002] When welding a round tube to each end of a large workpiece, the two round tubes need to share a common central axis to ensure their coaxiality. However, due to the large size of the workpiece and the large span between the two round tubes, existing equipment has difficulty positioning them, and the coaxiality of the two round tubes cannot be guaranteed, resulting in a large number of welding defects. Summary of the Invention

[0003] The technical problem to be solved by this utility model embodiment is to provide a tooling for coaxial welding with a large span, so as to solve the problem that the coaxiality of two circular tubes cannot be guaranteed in the welding of a large span.

[0004] To solve the above-mentioned technical problems, this utility model provides a tooling for coaxial welding with a large span, including: a crossbeam, side plates, positioning shafts, a first limiting block, and a second limiting block. A side plate is fixed at each end of the crossbeam, and a detachable positioning shaft is installed on each of the two side plates. The two positioning shafts are arranged facing each other and share a common central axis. The first limiting block and the second limiting block are installed on the crossbeam and arranged along its length.

[0005] The positioning shaft includes a positioning seat and a positioning ring. The positioning seat and the positioning ring are cylinders. The positioning seat and the positioning ring share a common central axis. The positioning ring is located at the end of the positioning seat, and the diameter of the positioning ring is smaller than the diameter of the positioning seat.

[0006] The crossbeam is a channel steel with its opening facing the positioning shaft. A positioning groove is made at the opening of the channel steel, and the first limiting block and the second limiting block are located at both ends of the positioning groove.

[0007] The length of the positioning groove opening is greater than the distance between the first limiting block and the second limiting block.

[0008] The first limiting block and the second limiting block are bolts, and the first limiting block and the second limiting block are threadedly installed on the crossbeam.

[0009] The first limiting block and the second limiting block are perpendicular to the central axis of the positioning axis.

[0010] A first fixing block and a second fixing block are fixed on the crossbeam. Two nuts are fixed on the first fixing block. The two nuts share a central axis and are threadedly engaged with the abutment bolt. A second fixing block is set on the side of the first fixing block away from the first limiting block. The second limiting block is rotatably mounted on the second fixing block. A through slot is opened in the crossbeam, and the second limiting block passes through the through slot of the crossbeam.

[0011] The first limiting block is a bolt, which is threadedly installed on the crossbeam. The rotation axis of the second limiting block is perpendicular to the central axis of the first limiting block.

[0012] The central axis of the first limiting block is perpendicular to the central axis of the positioning axis.

[0013] This utility model provides a tooling for coaxial welding with a large span. The overall structure is stable and reliable, and it is simple and convenient for workers to use and operate. It ensures the coaxiality of the two round tubes in the positioning welding of two round tubes with a large span, ensures the assembly quality, significantly reduces the welding defect rate, and improves production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the tooling for coaxial welding with a large span according to the present invention.

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0016] Figure 3 This is a schematic diagram of the tooling used for coaxial welding with a large span according to this utility model.

[0017] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0018] Figure 5 This is a partial schematic diagram of the tooling used for large-span coaxial welding according to Embodiment 2 of this utility model.

[0019] Figure 6 for Figure 5 A sectional view.

[0020] In the picture: 1. Crossbeam; 2. Side plate; 3. Positioning shaft; 4. First limiting block; 5. Second limiting block; 6. Positioning seat; 7. Positioning ring; 8. Positioning groove; 9. First fixing block; 10. Second fixing block; 11. Nut; 12. Abutment bolt; 13. Workpiece; 14. Round tube. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0024] This utility model provides a tooling for large-span coaxial welding, such as... Figures 1-2 It includes: a crossbeam 1, two side plates 2, two positioning shafts 3, a first limiting block 4, and a second limiting block 5. A side plate 2 is fixed at each end of the crossbeam 1. The two side plates 2 are parallel to each other. A detachable positioning shaft 3 is installed on each of the two side plates 2. The two positioning shafts 3 are set facing each other and share a common central axis.

[0025] The positioning shaft 3 includes a positioning seat 6 and a positioning ring 7. The main bodies of the positioning seat 6 and positioning ring 7 are cylinders. The positioning seat 6 and positioning ring 7 share a central axis. The positioning ring 7 is located at the end of the positioning seat 6, and the diameter of the positioning ring 7 is smaller than the diameter of the positioning seat 6. Figures 3-4 The positioning ring 7 is fitted with the inner wall of the round tube 14 with a clearance.

[0026] like Figure 2 The first limiting block 4 and the second limiting block 5 are bolts, and are threadedly installed on the crossbeam 1. The first limiting block 4 and the second limiting block 5 are arranged along the length of the crossbeam 1. The first limiting block 4 and the second limiting block 5 are perpendicular to the central axis of the positioning shaft 3.

[0027] like Figure 2 The crossbeam 1 is a channel steel with the opening facing the positioning shaft 3. A positioning groove 8 is opened at the opening of the channel steel. The first limiting block 4 and the second limiting block 5 are located at both ends of the positioning groove 8. The opening length of the positioning groove 8 is greater than the distance between the first limiting block 4 and the second limiting block 5.

[0028] When using this utility model, in conjunction with Figures 3-4Based on the required inner diameter of the round tube 14 to be welded, select the corresponding positioning shaft 3. The inner diameter of the round tube 14 is fitted with a clearance fit on the positioning ring 7. The end faces of the positioning seat 6 and the round tube 14 need to be pre-processed, and the end faces of the round tube 14 are positioned in close contact with the end faces of the positioning seat 6. Place the crossbeam 1 on the workpiece 13, and the positioning groove 8 is initially positioned on the workpiece 13. Rotate the first limiting block 4 and the second limiting block 5 in a threaded fit on the crossbeam 1 to fix and clamp the workpiece 13. During the fixing and clamping process, adjust the welding position of the round tube 14 on the workpiece 13 and align them. After the alignment is completed, weld the round tube 14 and the workpiece 13 to fix them. After welding, remove the positioning shaft 3 from the side plate 2, and remove the first limiting block 4 and the second limiting block 5 to loosen the workpiece 13. Disassembly is complete. Example

[0029] A tooling for large-span coaxial welding, such as Figures 4-5 It includes: a crossbeam 1, side plates 2, positioning shafts 3, a first limiting block 4, and a second limiting block 5. A side plate 2 is fixed at each end of the crossbeam 1. A detachable positioning shaft 3 is installed on each of the two side plates 2. The two positioning shafts 3 are arranged facing each other and share a common central axis. The positioning shaft 3 includes a positioning seat 6 and a positioning ring 7. The positioning seat 6 and the positioning ring 7 are cylinders. The positioning seat 6 and the positioning ring 7 share a common central axis. The positioning ring 7 is located at the end of the positioning seat 6. The diameter of the positioning ring 7 is smaller than the diameter of the positioning seat 6.

[0030] The first limiting block 4 is a bolt, and the first limiting block 4 is threadedly installed on the crossbeam 1. The central axis of the first limiting block 4 is perpendicular to the central axis of the positioning shaft 3.

[0031] A first fixing block 9 and a second fixing block 10 are fixed on the crossbeam 1. Two nuts 11 are fixed on the first fixing block 9. The two nuts 11 share a central axis and are threadedly engaged with the abutment bolt 12. The second fixing block 10 is set on the side of the first fixing block 9 away from the first limiting block 4. The second limiting block 5 is rotatably installed on the second fixing block 10. The rotation axis of the second limiting block 5 is perpendicular to the central axis of the first limiting block 4. A through groove is opened in the crossbeam 1, and the second limiting block 5 passes through the through groove of the crossbeam 1.

[0032] The crossbeam 1 is a channel steel with the opening facing the positioning shaft 3. A positioning groove 8 is opened at the opening of the channel steel, and the first limiting block 4 and the second limiting block 5 are located at both ends of the positioning groove 8.

[0033] When using this utility model, select the corresponding circular tube 14 and positioning shaft 3; refer to the combination Figures 3-4 Place the crossbeam 1 on the workpiece 13, and use the positioning groove 8 for initial positioning on the workpiece 13. Then, rotate the first limiting block 4 onto the crossbeam 1 using a threaded engagement. Figures 5-6Rotate the abutment bolt 12 to abut against the upper end of the second limiting block 5, and the lower end of the second limiting block 5 should be close to and abut against the workpiece 13, so that the first limiting block 4 and the second limiting block 5 together clamp the workpiece 13; during the clamping process, adjust the welding position of the round tube 14 on the workpiece 13 and align it. After the alignment is completed, weld the round tube 14 to the workpiece 13 to fix it. After welding, remove the positioning shaft 3 from the side plate 2, and rotate the abutment bolt 12 in the opposite direction to complete the disassembly.

[0034] In summary, the tooling for large-span coaxial welding of this utility model has a stable and reliable overall structure. It is simple and convenient for workers to use and operate, and is easy to learn. In the positioning welding of two round tubes with a large span, it ensures the coaxiality of the two round tubes, ensures the assembly quality, significantly reduces the welding defect rate, and improves production efficiency.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tooling for large-span coaxial welding, characterized in that, include: A crossbeam (1), a side plate (2), a positioning shaft (3), a first limiting block (4), and a second limiting block (5) are provided. A side plate (2) is fixed at each end of the crossbeam (1). A detachable positioning shaft (3) is installed on each of the two side plates (2). The two positioning shafts (3) are arranged facing each other and share a common central axis. The first limiting block (4) and the second limiting block (5) are installed on the crossbeam (1) and arranged along its length.

2. The tooling for large-span coaxial welding according to claim 1, characterized in that, The positioning shaft (3) includes a positioning seat (6) and a positioning ring (7). The positioning seat (6) and the positioning ring (7) are cylinders. The positioning seat (6) and the positioning ring (7) share a central axis. The positioning ring (7) is located at the end of the positioning seat (6). The diameter of the positioning ring (7) is smaller than the diameter of the positioning seat (6).

3. The tooling for large-span coaxial welding according to claim 1, characterized in that, The crossbeam (1) is a channel steel with the opening facing the positioning shaft (3). A positioning groove (8) is opened at the opening of the channel steel. The first limiting block (4) and the second limiting block (5) are located at both ends of the positioning groove (8).

4. The tooling for large-span coaxial welding according to claim 3, characterized in that, The opening length of the positioning groove (8) is greater than the distance between the first limiting block (4) and the second limiting block (5).

5. The tooling for large-span coaxial welding according to any one of claims 1-4, characterized in that, The first limiting block (4) and the second limiting block (5) are bolts, and the first limiting block (4) and the second limiting block (5) are threadedly installed on the crossbeam (1).

6. The tooling for large-span coaxial welding according to claim 5, characterized in that, The first limiting block (4) and the second limiting block (5) are perpendicular to the central axis of the positioning axis (3).

7. The tooling for large-span coaxial welding according to any one of claims 1-3, characterized in that, The first fixing block (9) and the second fixing block (10) are fixed on the crossbeam (1). Two nuts (11) are fixed on the first fixing block (9). The two nuts (11) share a central axis and are threadedly engaged with the abutment bolt (12). The second fixing block (10) is set on the side of the first fixing block (9) away from the first limiting block (4). The second limiting block (5) is rotatably installed on the second fixing block (10). The crossbeam (1) has a through groove, and the second limiting block (5) passes through the through groove of the crossbeam (1).

8. The tooling for large-span coaxial welding according to claim 7, characterized in that, The first limiting block (4) is a bolt, and the first limiting block (4) is threadedly installed on the crossbeam (1). The rotation axis of the second limiting block (5) is perpendicular to the central axis of the first limiting block (4).

9. The tooling for large-span coaxial welding according to claim 8, characterized in that, The central axis of the first limiting block (4) is perpendicular to the central axis of the positioning axis (3).

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