Auxiliary member for assembling multiple pipe diameter butt welded flanges

Abstract

The application relates to the technical field of flange welding, and discloses an auxiliary component suitable for multi-pipe-diameter butt welding flange assembly, which comprises a base, a back welding position, an inner pin rod and an outer pin assembly. The auxiliary component suitable for multi-pipe-diameter butt welding flange assembly has the effect of adjusting the radius through the outer pin assembly, can meet the connection requirements of flanges of different sizes without replacement, is more practical, and can make the cylindrical block move in the inner wall of the inner sliding groove through the rotation of the lead screw. When the cylindrical block moves, the position of the connecting rod between the inner pin rod and the outer arc-shaped plate can be changed through the first guide groove, the sliding block, the connecting block and the second guide groove. When the position of the connecting rod changes, the three outer arc-shaped plates can simultaneously move outward or inward along the three first guide grooves, thereby realizing the size change of the device, meeting various connection requirements, and the lead screw and the cylindrical block have a certain locking effect when combined.

Description

Technical Field

[0001] This application relates to the field of flange welding technology, specifically to auxiliary components applicable to the assembly of multi-diameter butt-welded flanges. Background Technology

[0002] The main function of flange locating pins is to position and fix the flange during connection, preventing rotation and displacement, and ensuring the sealing and stability of the connection. They are used during installation and can be separated from the flange after positioning and fixing are completed.

[0003] The existing locating pins cannot be easily adjusted in size. When connecting flanges of different sizes, it is necessary to replace them with locating pins of different sizes to complete the connection, which is inconvenient to use. In order to solve the above problems, an auxiliary component suitable for assembling multi-diameter butt welded flanges is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an auxiliary component suitable for assembling multi-diameter butt-welded flanges. The inner pin and the outer arc plate are connected by a connecting rod. By adjusting the position of the connecting rod, the radius of the circle formed by the outer arc plate can be adjusted, thereby achieving the purpose of dimensional change and meeting the connection requirements of flanges of different sizes, making it more practical.

[0005] To achieve the above objectives, this application provides the following technical solution: an auxiliary component for assembling multi-diameter butt-welded flanges, including a base, a back-welding position, an inner pin rod, and an outer pin assembly. The outer pin assembly includes three first guide grooves opened inside the back-welding position. A slider is slidably connected to the inner wall of each first guide groove, and an outer arc plate is fixedly connected to the upper surface of each slider.

[0006] The inner pin has an inner sliding groove, and a cylindrical block is slidably fitted on the inner wall of the inner sliding groove. The inner wall of the inner sliding groove has three second guide grooves, and a connecting block is slidably fitted on the inner wall of each second guide groove. The three connecting blocks are fixedly connected to the outer surface of the cylindrical block. A lead screw is rotatably fitted on the inner wall of the inner pin. The inner wall of the cylindrical block is threadedly connected to the outer surface of the lead screw. Two connecting rods are hinged to the inner wall of each connecting block. The outer arc plate and the inner pin are connected by connecting rods.

[0007] The above solution, through the setting of the external pin assembly, enables the device to adjust its radius, allowing it to meet the connection requirements of flanges of different sizes without replacement, making it more practical. By rotating the lead screw, the cylindrical block can move within the inner wall of the inner slide groove. When the cylindrical block moves, the position of the connecting rod between the inner pin and the outer arc plate can be changed through the first guide groove, the slider, the connecting block, and the second guide groove. When the position of the connecting rod changes, the three outer arc plates can simultaneously move outward or inward along the three first guide grooves, thereby achieving changes in the size of the device and meeting various connection requirements. Furthermore, the combination of the lead screw and the cylindrical block has a certain locking effect, which can keep the position of the three outer arc plates in the current adjustment position, making it even more practical.

[0008] Furthermore, the reflow soldering position is fixedly connected to the upper surface of the base, and the inner pin is fixedly connected to the upper surface of the reflow soldering position.

[0009] The above scheme defines the relationship between the base, the reflow position, and the inner pin, ensuring the stability of the various components in the device.

[0010] Furthermore, a fixing ring is fixedly connected to the bottom surface of the base.

[0011] The above-described design, with its fixed rings, facilitates the movement and operation of the device.

[0012] Furthermore, a guide post is installed on the inner wall of each of the first guide grooves, and the three sliders are respectively slidably sleeved on the outer surface of the three guide posts.

[0013] The above solution allows the slider to move more stably within the inner wall of the first guide groove by using the guide post, thereby enabling stable adjustment of the positions of the three outer arc plates, making it more practical.

[0014] Furthermore, two limiting posts are installed on the inner wall of the inner groove, and the two sides of the cylindrical block are respectively slidably sleeved on the outer surfaces of the two limiting posts.

[0015] The above scheme limits the movement trajectory of the cylindrical block by setting the limiting post, allowing the cylindrical block to slide stably in the inner wall of the inner groove, which is beneficial for stable adjustment of dimensions.

[0016] Furthermore, the bottom end of the lead screw passes through the re-welding position and the base in sequence, and the outer surface of the lead screw is rotatably sleeved in the inner wall of the re-welding position and the base.

[0017] The above solution defines the relationship between the lead screw, the base, and the re-welding position, improving the stability of the lead screw and making it more practical.

[0018] Furthermore, a knob is fixedly connected to the bottom end of the lead screw, and the outer surface of the knob is provided with anti-slip texture.

[0019] The above solution increases the contact area at the bottom of the lead screw by setting a knob, making it easier to rotate the lead screw. Rotating the lead screw allows for easy adjustment of the positions of the three outer arc plates, thereby achieving the purpose of changing dimensions and making it more practical.

[0020] Furthermore, one end of each of the six connecting rods is hinged to the inner wall of one of the three outer arc-shaped plates.

[0021] The above solution defines the connection relationship between the connecting rod and the outer arc plate. This allows for adjustment of the position of the outer arc plate by adjusting the position of the connecting rod, thus facilitating the connection of flanges of different sizes and making it more practical.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This auxiliary component is applicable to the assembly of multi-diameter butt-welded flanges. The external pin assembly allows for radius adjustment, enabling the device to meet the connection requirements of flanges of different sizes without replacement, making it more practical. Rotating the lead screw moves the cylindrical block within the inner wall of the inner groove. As the cylindrical block moves, the position of the connecting rod between the inner pin and the outer arc plate changes via the first guide groove, slider, connecting block, and second guide groove. When the position of the connecting rod changes, the three outer arc plates can simultaneously move outward or inward along the three first guide grooves, thus changing the size of the device to meet various connection needs. Furthermore, the combination of the lead screw and the cylindrical block provides a locking effect, keeping the positions of the three outer arc plates in their current adjusted positions, further enhancing its practicality. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this application;

[0025] Figure 2 This is a schematic diagram of the overall structure of this application;

[0026] Figure 3 This is a schematic diagram of the overall structure of this application;

[0027] Figure 4 This is a schematic diagram of the overall structure of this application;

[0028] Figure 5 This is a schematic diagram of the overall structure of this application.

[0029] In the picture:

[0030] 1. Base; 2. Reflow soldering position; 3. Inner pin rod; 4. Outer pin assembly; 401. First guide groove; 402. Slider; 403. Outer arc plate; 404. Guide post; 405. Inner sliding groove; 406. Cylindrical block; 407. Connecting block; 408. Second guide groove; 409. Connecting rod; 410. Lead screw; 411. Limiting post; 412. Knob; 5. Retaining ring. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 1 , Figure 2 and Figure 3 The auxiliary component for assembling multi-diameter butt-welded flanges in this embodiment includes a base 1, a back-welding position 2, an inner pin rod 3, and an outer pin assembly 4. The back-welding position 2 is fixedly connected to the upper surface of the base 1, and the inner pin rod 3 is fixedly connected to the upper surface of the back-welding position 2, defining the relationship between the base 1, the back-welding position 2, and the inner pin rod 3, and ensuring the stability between the various components in the device. A fixing ring 5 is fixedly connected to the bottom surface of the base 1, which facilitates the movement and operation of the device.

[0033] Please see Figure 3 , Figure 4 and Figure 5 The export component 4 includes three first guide grooves 401 formed inside the reflow position 2. A slider 402 is slidably connected to the inner wall of each first guide groove 401. An outer arc-shaped plate 403 is fixedly connected to the upper surface of each slider 402. A guide post 404 is installed on the inner wall of each first guide groove 401. The three sliders 402 are slidably fitted onto the outer surfaces of the three guide posts 404. The guide posts 404 allow the sliders 402 to move more stably within the inner wall of the first guide groove 401, thereby ensuring stable movement of the three export components. The position of the arc plate 403 has been adjusted for greater practicality. To ensure motion stability, the surface of the guide post 404 is mirror-polished and forms an interference fit with the linear bearing inside the slider 402. The slider 402 is fitted onto the corresponding guide post 404 through precision-machined guide holes. This structural design not only effectively prevents radial swaying and torsion that may occur during the movement of the slider 402, but also withstands the high-frequency vibration generated during welding operations, ensuring that the three outer arc plates 403 maintain synchronicity and stability during adjustment and positioning.

[0034] Please see Figure 3 , Figure 4 and Figure 5 The inner pin 3 has an inner sliding groove 405. A cylindrical block 406 is slidably fitted onto the inner wall of the inner sliding groove 405. The cylindrical block 406 can move up and down inside the inner sliding groove 405. Two limiting posts 411 are installed on the inner wall of the inner sliding groove 405. The two sides of the cylindrical block 406 are slidably fitted onto the outer surfaces of the two limiting posts 411 respectively. The limiting posts 411 can limit the movement trajectory of the cylindrical block 406, so that the cylindrical block 406 can slide stably in the inner wall of the inner sliding groove 405, which is beneficial for stable adjustment of dimensions. The inner wall of the inner sliding groove 405 has three second guide grooves. 408, each second guide groove 408 has a connecting block 407 slidably sleeved on its inner wall. The three connecting blocks 407 are fixedly connected to the outer surface of the cylindrical block 406. When the cylindrical block 406 moves in the inner wall of the inner sliding groove 405, the three connecting blocks 407 will move up and down in the corresponding second guide groove 408 respectively. The inner wall of the inner pin 3 is rotatably sleeved with a lead screw 410. The inner wall of the cylindrical block 406 is threadedly connected to the outer surface of the lead screw 410. The inner wall of each connecting block 407 is hinged with two connecting rods 409. The outer arc plate 403 and the inner pin 3 are connected by the connecting rods 409.

[0035] Please see Figure 2 , Figure 4 and Figure 5 One end of each of the six connecting rods 409 is hinged to the inner wall of one of the three outer arc plates 403, defining the connection relationship between the connecting rods 409 and the outer arc plates 403. This allows for adjustment of the position of the outer arc plates 403 by adjusting the position of the connecting rods 409, conveniently meeting the needs of flange connections of different sizes, making it more practical. The bottom end of the lead screw 410 passes through the re-welding position 2 and the base 1 sequentially. The outer surface of the lead screw 410 is rotatably sleeved within the inner wall of the re-welding position 2 and the base 1, defining the position of the lead screw 410. The relationship between the lead screw 410, base 1, and reflow position 2 improves the stability of the lead screw 410 and makes it more practical. A knob 412 is fixedly connected to the bottom end of the lead screw 410. The outer surface of the knob 412 is provided with anti-slip texture. By setting the knob 412, the contact area at the bottom end of the lead screw 410 can be increased, thereby facilitating the rotation of the lead screw 410 by the knob 412. The rotation of the lead screw 410 can facilitate the adjustment of the position of the three outer arc plates 403, thereby achieving the purpose of size change, making it more practical.

[0036] In this embodiment, the auxiliary component for assembling multi-diameter butt-welded flanges is designed with an external pin assembly 4 to adjust the radius of the device. This allows the device to meet the connection requirements of flanges of different sizes without replacement, making it more practical. By rotating the lead screw 410, the cylindrical block 406 can move within the inner wall of the inner groove 405. When the cylindrical block 406 moves, the position of the connecting rod 409 between the inner pin 3 and the outer arc plate 403 can change through the first guide groove 401, the slider 402, the connecting block 407, and the second guide groove 408. When the position of the connecting rod 409 changes, the three outer arc plates 403 can simultaneously move outward or inward along the three first guide grooves 401, thereby changing the size of the device to meet various connection requirements. Furthermore, the lead screw 410 and the cylindrical block 406 have a certain locking effect, which keeps the position of the three outer arc plates 403 in the current adjustment position, making it even more practical.

[0037] The working principle of the above embodiment is as follows: During use, the inner pin 3 and the outer pin assembly 4 are inserted into the center hole of the flange to complete the initial positioning. Then, the bottom knob 412 is turned to drive the lead screw 410 to rotate, which drives the cylindrical block 406 connected to it to move vertically along the inner slide groove 405. At this time, the cylindrical block 406 is constrained by the limiting posts 411 on both sides to ensure the linear accuracy of the movement trajectory. The three connecting blocks 407 fixed on the cylindrical block 406 rise and fall with it and slide synchronously along the second guide groove 408 inside the inner slide groove 405, which forces the six connecting rods 409 hinged to the three connecting blocks 407 to change their angle. The other ends of the six connecting rods 409 are respectively hinged to the three outer arc plates 403 of the outer pin assembly 4. In this way, the vertical displacement of the cylindrical block 406 can be converted into the outer arc plate 403. The radial extension and retraction movement of the outer arc plate 403 is achieved by sliding along the first guide groove 401 via the bottom slider 402 and maintaining synchronous expansion or contraction under the guidance of the guide column 404. Ultimately, the diameter of the positioning circle formed by the three outer arc plates 403 is precisely matched with the inner diameter of the target flange. After adjustment, the locking effect between the screw 410 and the cylindrical block 406 can fix the position of the cylindrical block 406, ensuring that the outer arc plate 403 does not shift during welding. After the flange is positioned, the device cooperates with the welding equipment through the re-welding position 2 to complete the operation. When disassembling, rotating the knob 412 in the opposite direction can retract the outer arc plate 403, achieving rapid separation from the flange. The entire process achieves stepless adjustment through mechanical linkage, taking into account both positioning accuracy and ease of operation, and significantly improving the welding efficiency of multi-size flanges.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary component for assembling multi-diameter butt-welded flanges, comprising a base (1), a back-welding position (2), an inner pin (3), and an outer pin assembly (4), characterized in that: The outgoing component (4) includes three first guide grooves (401) opened inside the reflow position (2), and a slider (402) is slidably connected to the inner wall of each first guide groove (401), and an outer arc plate (403) is fixedly connected to the upper surface of each slider (402). The inner pin (3) has an inner sliding groove (405) inside. A cylindrical block (406) is slidably sleeved on the inner wall of the inner sliding groove (405). Three second guide grooves (408) are opened on the inner wall of the inner sliding groove (405). A connecting block (407) is slidably sleeved on the inner wall of each second guide groove (408). The three connecting blocks (407) are fixedly connected to the outer surface of the cylindrical block (406). A lead screw (410) is rotatably sleeved on the inner wall of the inner pin (3). The inner wall of the cylindrical block (406) is threadedly connected to the outer surface of the lead screw (410). Two connecting rods (409) are hinged to the inner wall of each connecting block (407). The outer arc plate (403) and the inner pin (3) are connected by the connecting rods (409).

2. The auxiliary component for assembling multi-diameter butt-welded flanges according to claim 1, characterized in that: The reflow position (2) is fixedly connected to the upper surface of the base (1), and the inner pin (3) is fixedly connected to the upper surface of the reflow position (2).

3. The auxiliary component for assembling multi-diameter butt-welded flanges according to claim 1, characterized in that: A fixing ring (5) is fixedly connected to the bottom surface of the base (1).

4. The auxiliary component for assembling multi-diameter butt-welded flanges according to claim 1, characterized in that: Each of the first guide grooves (401) has a guide post (404) installed on its inner wall, and the three sliders (402) are respectively slidably sleeved on the outer surface of the three guide posts (404).

5. The auxiliary component for assembling multi-diameter butt-welded flanges according to claim 1, characterized in that: The inner wall of the inner groove (405) is equipped with two limiting posts (411), and the two sides of the cylindrical block (406) are respectively slidably sleeved on the outer surface of the two limiting posts (411).

6. The auxiliary component for assembling multi-diameter butt-welded flanges according to claim 1, characterized in that: The bottom end of the lead screw (410) passes through the re-welding position (2) and the base (1) in sequence, and the outer surface of the lead screw (410) is rotatably sleeved in the inner wall of the re-welding position (2) and the base (1).

7. The auxiliary component for assembling multi-diameter butt-welded flanges according to claim 6, characterized in that: A knob (412) is fixedly connected to the bottom end of the lead screw (410), and the outer surface of the knob (412) is provided with anti-slip texture.

8. The auxiliary component for assembling multi-diameter butt-welded flanges according to claim 1, characterized in that: One end of each of the six connecting rods (409) is hinged to the inner wall of one of the three outer arc plates (403).

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