A large pass line special-shaped pipe assembly welding positioning and inspection integrated tool

Abstract

The utility model relates to tool fixture technical field especially relates to a big passageway special-shaped pipeline assembly welding positioning and inspection integrated tool, including tool base plate, the tool base plate top position fixing module and self -adaptation fixed module are established, position fixing module includes pipe fitting support mechanism and joint limiting mechanism, among them pipe fitting support mechanism adopts a plurality of height adjustable support stand column to adapt pipe fitting contour, through the accurate positioning and leveling of joint that position fixing mandrel and support rod on top and bottom positioning device are set up in sliding, self -adaptation fixed module passes through the gasket and the pressing plate component, can adjust and lock the support stand column position flexibly, has realized to big pipe diameter special-shaped pipeline assembly's quick, accurate clamping, modular design has improved the versatility and adaptability of tool significantly, can be applicable to different size and shape's pipeline assembly to reduce the design manufacturing period and cost of special tool.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to an integrated tooling for welding, positioning and inspection of large-diameter irregular-shaped pipe components. Background Technology

[0002] Aerospace engines have complex structures and compact piping installation space. When welding piping components, especially large-diameter irregular-shaped piping components, if the relative position of the joint and the pipe shape is not properly constrained, it will lead to installation difficulties or even installation failure. To solve this problem, it is often necessary to design special welding fixtures. Since the size and outer shape of piping components of different engine models are also different, traditional welding fixtures have poor versatility, long design time, and high processing costs.

[0003] Based on the above-mentioned technical problems, this utility model proposes an integrated tooling for welding, positioning and inspection of large-diameter irregular-shaped pipe components. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an integrated tooling for welding, positioning and inspection of large-diameter irregular pipe components, so as to solve the above-mentioned technical problems.

[0005] This utility model is achieved through the following technical solution: a large-diameter irregular pipe assembly welding positioning and inspection integrated tooling, including a tooling base plate, and a positioning module and an adaptive fixing module are provided on the upper part of the tooling base plate; The positioning module includes a joint limiting mechanism and a pipe support mechanism. The pipe support mechanism includes multiple height-adjustable support columns, the height of which is set according to the pipe profile to support the pipe. The pipe support mechanism is provided with joint limiting mechanisms at both ends for joint positioning and leveling. The joint limiting mechanism includes a top positioning device and a bottom positioning device. The top positioning device includes a top positioning column, and a positioning mandrel is slidably arranged on the top positioning column. The bottom positioning device includes a bottom positioning post and a side positioning post. A support rod is slidably mounted on the bottom positioning post, and a positioning mandrel is slidably mounted on the side positioning post. The adaptive fixing module includes a pad for fixing the support column. The pad is fixedly mounted on the tooling base plate, and the tooling base plate is also provided with a pressure plate assembly for fixing the pad.

[0006] Furthermore, the supporting column, top positioning column, bottom positioning column, and side positioning column are all telescopic structures, and each has a mounting block at the bottom. The mounting block is fixedly connected to the pad block, and a limit slider is provided at the front end of the mounting block.

[0007] Furthermore, a pipe fitting limiting groove is provided at the top of the supporting column.

[0008] Furthermore, the pressure plate assembly includes a fixing block fixedly mounted on the tooling base plate, the fixing block being disposed around the support column, and a pressure plate being disposed above the fixing block and the pad block, the pressure plate being fixedly connected to the fixing block.

[0009] Furthermore, a through groove is provided in the middle part of the pressure plate, and a fastening bolt is provided in the through groove.

[0010] Furthermore, the positioning mandrel is slidably disposed in the mounting holes of the top positioning post and the side positioning post, and the positioning mandrel has a limit rod, with a circular finding plate and a concentric block disposed below the limit rod.

[0011] Furthermore, the locating plate is equipped with positioning pins.

[0012] Furthermore, a connector support column is provided below the top positioning column, and a positioning groove and a clearance groove are provided at the top of the connector support column. The clearance groove is used to avoid the outer arc surface of the connector.

[0013] Furthermore, the top positioning post and the bottom positioning post are provided with threaded holes on their sides corresponding to the positioning mandrel, and inspection studs are provided in the threaded holes.

[0014] The beneficial effects of this utility model are as follows: A large-diameter irregular-shaped pipe assembly welding positioning and inspection integrated tooling includes a tooling base plate. A positioning module and an adaptive fixing module are set on the upper part of the tooling base plate. Through multiple height-adjustable support columns and independent joint limiting mechanisms at both ends, the tooling achieves rapid and accurate positioning and leveling of large-diameter irregular-shaped pipe fittings and their joints. This effectively constrains the position of the joints and pipe shape during the welding process, ensuring the dimensional accuracy and geometric tolerance of the welded assembly from the source. It avoids the problem of difficult on-site installation or inability to assemble due to welding deformation. Furthermore, the tooling adopts a modular design. In particular, through the pad and pressure plate components in the adaptive fixing module, the support columns can be flexibly adjusted and fixed according to the pipe contour. There is no need to redesign and manufacture the entire tooling for each specific pipe shape, which greatly improves the versatility and adaptability of the tooling and can cover the welding needs of pipe assembly with different sizes and outlines. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the device's main view; Figure 2 This is a schematic diagram of the overall structure of the device; Figure 3 This is a top view of the device; Figure 4 This is a schematic diagram of the positioning mandrel structure; Figure 5 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 6 for Figure 2 Enlarged structural diagram at point B.

[0016] In the diagram: 1. Tooling base plate; 2. Support column; 21. Mounting block; 22. Top positioning column; 23. Limiting slider; 3. Joint support column; 31. Joint limiting groove; 32. Clearance groove; 33. Flange; 34. Positioning pin; 4. Side positioning column; 41. Bottom positioning column; 42. Support rod; 5. Fixing block; 51. Pressure plate; 52. Pad block; 6. Positioning mandrel; 61. Limiting rod; 62. Finding plate; 63. Concentric block. Detailed Implementation

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1 like Figure 1-6 As shown in the figure, this embodiment discloses an integrated tooling for welding, positioning and inspection of large-diameter irregular pipe components, including a tooling base plate 1, on which mounting grooves are evenly opened, and a positioning module and an adaptive fixing module are installed above the tooling base plate 1.

[0020] The adaptive fixing module includes a fixing block 5, a pressure plate 51, and a pad 52. Both the fixing block 5 and the pad 52 are provided with bolt mounting slots and mounting holes, and can be fixed to the tooling base plate with bolts through their respective mounting holes. The bolt mounting slots are used to fix other components. The fixing block 5 and the pad 52 are installed on the tooling base plate with bolts. The fixing block 5 can be installed at any position on the tooling base plate 1 according to the position of the positioning module. A pressure plate 51 for fixing the pad 52 is installed above the fixing block 5. The pressure plate has mounting holes at both ends and a through groove in the middle. Fastening bolts are installed in the mounting holes and through groove to fix the pressure plate 51 to the tooling base plate 1, thereby pressing the pad 52 below the pressure plate 51 and ensuring that the mounting surface of the pad 52 is parallel to the tooling base plate 1.

[0021] A positioning module is installed above the pad 52. The positioning module includes a pipe support mechanism and a joint limiting mechanism.

[0022] The pipe support mechanism includes a support column 2 fixedly installed above the pad 52. Different sizes of support columns 2 are selected according to the contour of the pipe fitting, and the height of the support column 2 is adjusted. An mounting block 21 is welded to the bottom end of the support column 2. The mounting block 21 is fixedly installed on the pad 52 by bolts. A limiting slider 23 is also fixedly connected to the front end of the mounting block 21. The limiting slider 23 slides in the groove of the pad 52 and limits the movement during the installation of the support column 2. A pipe fitting limiting groove is provided at the top of the support column 2 for placing the pipe fitting. An avoidance groove 32 is provided in the pipe fitting limiting groove to avoid the outer arc portion of the pipe fitting elbow.

[0023] The joint limiting mechanism is located at both ends of the pipe fitting support mechanism. The joint limiting mechanism includes a top positioning device and a bottom positioning device. The top positioning device includes a top positioning post 22, which is fixedly installed at the top of the pipe fitting. An installation hole is provided on the top positioning post 22, and a positioning mandrel 6 is slidably installed in the installation hole to position the joint at the top of the pipe fitting. A joint support post 3 is installed between the top positioning post 22 and the support post 2. A joint limiting groove 31 is provided at the top of the joint support post 3, and an avoidance groove 32 is provided in the joint limiting groove 31 to avoid the outer arc of the joint bend. The bottom positioning device includes a bottom positioning post 41 and a side positioning post 4. Installation holes are provided on the bottom positioning post 41 and the side positioning post 4. A support rod 42 is slidably installed in the installation hole of the bottom positioning post 41 to support the bottom joint of the pipe fitting. A positioning mandrel 6 is slidably installed in the installation hole of the side positioning post 4 to position the joint to be welded.

[0024] like Figure 4As shown, a limiting rod 61 is installed on the side wall of the positioning mandrel 6. When the positioning mandrel 6 is installed, the limiting rod 61 is located above the top positioning post 22 to support the positioning mandrel 6. A locating plate 62 and a concentric block 63 are welded to the bottom end of the positioning mandrel 6. The outer diameter of the concentric block 63 is equal to the inner diameter of the pipe fitting joint. The material of the concentric block 63 can be wear-resistant materials such as aluminum or mold steel. When welding and positioning the pipe fitting joint, the concentric block 63 needs to be placed in the pipe fitting joint, and the end face of the locating plate 62 is flush with the end face of the pipe fitting joint.

[0025] like Figure 5 As shown, a flange 33 needs to be welded to the top of the pipe fitting joint. After the pipe fitting is welded, when installing the pipe fitting, the flange hole of the flange 33 needs to correspond to the installation hole of the workpiece. Therefore, a locating pin 34 is installed on the plate 62, and the locating pin 34 corresponds to the flange hole of the flange 33.

[0026] A large-diameter, irregularly shaped pipe assembly welding positioning and inspection integrated fixture is used by first arranging support columns 2, top positioning columns 22, bottom positioning columns 41, and side positioning columns 4 according to the pipe's outline. Fixing blocks 5 are fixedly installed around the support columns 2. The support columns 2 and each positioning column are then fixedly installed on the fixture base plate 1 using pads 52. The pads 52 are then pressed tightly by pressure plates 51. The pipe is then placed on the support columns 2. The pipe fittings to be welded at both ends are then fitted onto the concentric blocks 63 of the positioning mandrel 6, ensuring the joint end faces are in contact with the leveling plate 62. The positioning mandrel 6 is axially limited by the limiting rod 61, and the pipe fitting joints are adjusted to the welding angle. The pipe fitting joints are then connected to the pipe by spot welding. After the connection is complete, the pipe is moved to the welding chamber for complete welding.

[0027] Example 2 like Figure 6 As shown, a threaded hole 64 is provided on the side of the positioning mandrel 6. The position of the threaded hole 64 is aligned with the corresponding through hole on the side of the top positioning post 22. After the pipe fitting is welded, in order to avoid welding errors, it is necessary to inspect the welding quality of the pipe fitting. At this time, the welded pipe fitting needs to be moved back to the tooling, and the positioning mandrel 6 is reinstalled on the pipe fitting joint. If the inspection stud can pass smoothly through the aligned threaded hole 64 and the through hole and be screwed in, it indicates that the relative position accuracy of the pipe fitting joint meets the requirements and the welding quality is qualified.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding positioning and inspection integrated fixture for large-diameter irregular-shaped pipe components, comprising a fixture base plate, characterized in that, A positioning module and an adaptive fixing module are provided above the tooling base plate; The positioning module includes a joint limiting mechanism and a pipe fitting support mechanism. The pipe fitting support mechanism includes multiple support columns for supporting the pipe fitting with adjustable contour height. The pipe fitting support mechanism is provided with joint limiting mechanisms at both ends for joint positioning and leveling. The joint limiting mechanism includes a top positioning device and a bottom positioning device. The top positioning device includes a top positioning column, and a positioning mandrel is slidably arranged on the top positioning column. The bottom positioning device includes a bottom positioning post and a side positioning post. A support rod is slidably mounted on the bottom positioning post, and a positioning mandrel is slidably mounted on the side positioning post. The adaptive fixing module includes a pad for fixing the support column. The pad is fixedly mounted on the tooling base plate, and the tooling base plate is also provided with a pressure plate assembly for fixing the pad.

2. The integrated tooling for welding, positioning, and inspection of large-diameter irregular-shaped pipe components according to claim 1, characterized in that, The supporting column, top positioning column, bottom positioning column, and side positioning column are all telescopic structures, and each has a mounting block at the bottom. The mounting block is fixedly connected to the pad block, and a limit slider is provided at the front end of the mounting block.

3. The integrated tooling for welding, positioning, and inspection of large-diameter irregular-shaped pipe components according to claim 1, characterized in that, The top of the support column is provided with a pipe fitting limiting groove.

4. The integrated tooling for welding, positioning, and inspection of large-diameter irregular-shaped pipe components according to claim 1, characterized in that, The pressure plate assembly includes a fixing block fixedly mounted on the tooling base plate. The fixing block is arranged around the support column. A pressure plate is arranged above the fixing block and the pad block. The pressure plate is fixedly connected to the fixing block.

5. The integrated tooling for welding, positioning, and inspection of large-diameter irregular-shaped pipe components according to claim 4, characterized in that, The pressure plate has a through groove in the middle, and a fastening bolt is installed in the through groove.

6. The integrated tooling for welding, positioning, and inspection of large-diameter irregular-shaped pipe components according to claim 1, characterized in that, The positioning mandrel is slidably disposed in the mounting holes of the top positioning post and the side positioning post. The positioning mandrel has a limit rod, and a circular finding plate and a concentric block are provided below the limit rod.

7. The integrated tooling for welding, positioning, and inspection of large-diameter irregular-shaped pipe components according to claim 6, characterized in that, The locating plate is equipped with positioning pins.

8. The integrated tooling for welding, positioning, and inspection of large-diameter irregular-shaped pipe components according to claim 1, characterized in that, A connector support column is provided below the top positioning column, and a positioning groove and an avoidance groove are provided at the top of the connector support column. The avoidance groove is used to avoid the outer arc surface of the connector.

9. The integrated tooling for welding, positioning, and inspection of large-diameter irregular-shaped pipe components according to claim 1, characterized in that, The top and bottom positioning posts are also provided with threaded holes on their sides corresponding to the positioning mandrel, and inspection studs are provided in the threaded holes.

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