Flange and steel pipe aligning auxiliary device

Abstract

The utility model discloses a flange and steel pipe aligning auxiliary device which comprises a lead screw, an adjusting piece, a fixed seat, a movable seat, a plurality of first connecting rods, a plurality of second connecting rods and a plurality of supporting frames. The adjusting piece is fixed to the first end of the lead screw. The fixed seat sleeves the screw rod and is arranged adjacent to the adjusting piece; the fixed seat is provided with a first connecting part; the movable seat is in threaded connection with the screw rod, is arranged close to the second end of the screw rod and is provided with a second connecting part; the first end of the first connecting rod is movably connected with the first connecting part; the first end of the second connecting rod is movably connected with the second end of the first connecting rod; the second end of the second connecting rod is movably connected with the second connecting part; the support frame is connected with the joint of the first connecting rod and the second connecting rod; when the adjusting piece drives the lead screw to rotate, the movable base moves in the axial direction of the lead screw to drive the multiple supporting frames to be unfolded or folded, and therefore supporting and positioning of the flange on the outer side of a steel pipe welding connector are achieved, it is guaranteed that the flange and a steel pipe are coaxial, and welding is convenient.

Description

Technical Field

[0001] This application relates to the field of pipeline welding technology, specifically to an auxiliary device for aligning a flange with a steel pipe. Background Technology

[0002] Flange alignment refers to the process of connecting two pipes, fittings, or equipment using their respective flanges. During the alignment process, the flange is first spot-welded to the steel pipe. Then, a right-angle ruler is used to correct the perpendicularity at multiple symmetrical points before symmetrical spot welding is performed again. Sometimes, due to shrinkage and deformation from spot welding, the perpendicularity becomes inaccurate, causing problems for subsequent pipe installation.

[0003] Secondly, if the pipe flange and valve are not aligned after installation, it can easily cause tension and lead to poor flange sealing, resulting in leaks, compromised installation quality, and inconvenient maintenance later on. Therefore, in actual construction, it is crucial to design an auxiliary device to ensure the perpendicularity of the flange and steel pipe after welding. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides an auxiliary device for aligning a flange and a steel pipe, comprising: a lead screw having a first end and a second end that are far apart from each other; an adjusting member fixed to the first end of the lead screw; a fixed seat sleeved on the lead screw and disposed adjacent to the adjusting member; the fixed seat having a first through hole in the middle for the lead screw to pass through, and the fixed seat having a plurality of first connecting portions along the circumferential direction; a movable seat screwed to the lead screw and disposed adjacent to the second end of the lead screw, the movable seat having a plurality of second connecting portions along the circumferential direction; and a first connecting rod having Multiple first connecting rods are provided, with the first end of each first connecting rod movably connected to one of the first connecting parts; multiple second connecting rods are provided, with the first end of each second connecting rod movably connected to the second end of a corresponding first connecting rod, and the second end of each second connecting rod movably connected to one of the second connecting parts; multiple support frames are provided, with the middle portion of each support frame connected to the joint portion of the corresponding first and second connecting rods; when the adjusting member drives the lead screw to rotate, the movable seat moves along the axial direction of the lead screw, causing the support frame to unfold or retract.

[0005] In some embodiments of this application, the support frame includes a first support portion and a second support portion in its length direction, wherein the first support portion is close to the first end of the lead screw; the first support portion is used to support the inner wall of the flange, the second support portion is used to support the inner wall of the steel pipe, and the support frame further includes a support foot perpendicular to the first support portion.

[0006] In some embodiments of this application, the first support portion, the second support portion, and the support foot are all plate-shaped structures, the thickness of the first support portion is greater than the thickness of the second support portion, and the thickness of the first support portion is the same as the thickness of the support foot.

[0007] In some embodiments of this application, the support frame further includes a magnetic element embedded in the support foot.

[0008] In some embodiments of this application, the flange and steel pipe alignment auxiliary device further includes multiple pins, the first connecting rod and the first connecting part are movably connected by the pins, the first connecting rod, the second connecting rod and the support frame are movably connected by the pins, and the second connecting rod and the second connecting part are movably connected by the pins.

[0009] In some embodiments of this application, the inner side of the first support portion is provided with a connecting lug that is connected to the pin.

[0010] In some embodiments of this application, the flange and steel pipe alignment auxiliary device further includes gaskets disposed on both sides of the fixing seat.

[0011] In some embodiments of this application, there are three of each of the first link, the second link, and the support frame.

[0012] In some embodiments of this application, the adjusting element is a nut welded to the lead screw.

[0013] In some embodiments of this application, the adjusting element is a handwheel welded to the lead screw.

[0014] The beneficial effects of this application are as follows: This utility model discloses an auxiliary device for aligning a flange and a steel pipe, including a lead screw, an adjusting component, a fixed seat, a movable seat, multiple first connecting rods, multiple second connecting rods, and multiple support frames; the adjusting component is fixed to the first end of the lead screw; the fixed seat is sleeved on the lead screw and located adjacent to the adjusting component, and the fixed seat has a first connecting portion; the movable seat is screwed to the lead screw and located adjacent to the second end of the lead screw, and the movable seat has a second connecting portion; the first end of the first connecting rod is movably connected to the first connecting portion; the first end of the second connecting rod is movably connected to the second end of the first connecting rod, and the second end of the second connecting rod is movably connected to the second connecting portion; the support frames are connected to the joint of the first and second connecting rods; when the adjusting component drives the lead screw to rotate, the movable seat moves along the axial direction of the lead screw, causing the multiple support frames to unfold or retract, thereby realizing the support and positioning of the flange on the outside of the steel pipe welding interface, ensuring that the flange and the steel pipe are coaxial, and facilitating welding. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0016] Figure 1 This is a perspective view of an auxiliary device for aligning a flange and a steel pipe according to this utility model;

[0017] Figure 2 This is another perspective view of an auxiliary device for aligning a flange and a steel pipe according to this utility model;

[0018] Figure 3 This is a schematic diagram of the movable seat and fixed seat installed on the screw rod in one embodiment of an auxiliary device for flange and steel pipe alignment according to this utility model;

[0019] Figure 4 This is a schematic diagram of the support frame in an auxiliary device for aligning a flange and a steel pipe according to this utility model.

[0020] Figure 5 This is a schematic diagram showing the connection of the first connecting rod, the second connecting rod, and the support frame of an auxiliary device for aligning a flange and a steel pipe according to this utility model. Detailed Implementation

[0021] 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 alternative implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] like Figures 1 to 5 As shown, as an embodiment of the flange and steel pipe alignment auxiliary device, the flange and steel pipe alignment auxiliary device includes a lead screw 10, an adjusting member 20, a fixed seat 30, a movable seat 40, a first connecting rod 50, a second connecting rod 60, and a support frame 70. The lead screw 10 has a first end and a second end that are far apart from each other. The adjusting member 20 is fixed to the first end of the lead screw 10 and can drive the lead screw 10 to rotate coaxially. The fixed seat 30 is sleeved on the lead screw 10 and is disposed adjacent to the adjusting member 20. The fixed seat 30 has a first through hole (not shown) in the middle for the lead screw 10 to pass through. Figure 3 In the middle, the fixed seat 30 has a plurality of first connecting parts 31 along the circumferential direction; the movable seat 40 is screwed to the lead screw 10 and is disposed adjacent to the second end of the lead screw 10. Figure 3In the middle, the movable seat 40 has a plurality of second connecting parts 41 along the circumferential direction; there are a plurality of first connecting rods 50, and the first end of each first connecting rod 50 is movably connected to a first connecting part 31; there are a plurality of second connecting rods 60, and the first end of each second connecting rod 60 is movably connected to the second end of a corresponding first connecting rod 50, and the second end of each second connecting rod 60 is movably connected to a second connecting part 41; there are a plurality of support frames 70, and the middle part of each support frame 70 is connected to the joint part of the corresponding first connecting rod 50 and second connecting rod 60; when the adjusting member 20 drives the lead screw 10 to rotate, the movable seat 40 moves along the axial direction of the lead screw 10, driving the support frame 70 to unfold or retract (i.e., move closer to or away from the lead screw 10).

[0023] In this embodiment, during the flange and steel pipe assembly process, the auxiliary device can support and pre-position the flange, ensuring that the flange and steel pipe are concentric and facilitating welding. In use, the auxiliary device is passed through the flange and steel pipe, and the screw 10 can be driven to rotate coaxially by the rotating adjustment component 20, thereby causing the movable seat 40 to move on the screw 10 towards the fixed seat 30. The joint of the first connecting rod 50 and the second connecting rod 60 pushes the support frame 70 to expand outward, so that the outer sides of the multiple support frames 70 can support the inner walls of the steel pipe and flange in the circumferential direction. This achieves the support and positioning of the flange outside the steel pipe welding interface, ensuring that the flange and steel pipe are concentric and facilitating welding.

[0024] Specifically, the usage method of the flange and steel pipe alignment auxiliary device is as follows:

[0025] Step 1: Align the flange with the steel pipe according to the auxiliary device Figure 1 The screw is inserted into the steel pipe as shown, wherein the second end of the screw 10 enters the steel pipe.

[0026] Step 2: Place the flange on the auxiliary device, with the end face of the flange welded to the steel pipe pressed tightly against the steel pipe, and the other end face of the flange fitting against the end of the support frame 70 (i.e., the support leg 73).

[0027] Step 3: Rotate the adjusting component 20 to make the lead screw 10 rotate in the fixed seat 30, thereby driving the movable seat 40 to move along the lead screw 10 towards the fixed seat 30; the first connecting rod 50 and the second connecting rod 60 approach each other, and the joint of the first connecting rod 50 and the second connecting rod 60 expands outward in the circumferential direction, driving the support frame 70 to expand outward (i.e. away from the lead screw 10). During the outward expansion process, part of the support frame 70 is pressed against the inner wall of the steel pipe, and the other part of the support frame 70 is pressed against the inner wall of the flange, so that the flange and the steel pipe remain concentric and in a vertical state;

[0028] Step 4: Weld the flange to the steel pipe;

[0029] Step 5: After welding is completed, rotate the adjusting component 20 in the opposite direction so that the lead screw 10 rotates in the fixed seat 30, thereby driving the movable seat 40 to move away from the fixed seat 30 along the lead screw 10. The support frame 70 no longer supports the inner wall of the steel pipe and the inner wall of the flange. Then, remove the support frame 70.

[0030] Furthermore, such as Figure 4 As shown, the support frame 70 includes a first support portion 71 and a second support portion 72 along its length, wherein the first support portion 71 is close to the first end of the lead screw 10; the first support portion 71 is used to support the inner wall of the flange, and the second support portion 72 is used to support the inner wall of the steel pipe; since the steel pipe is relatively long, it is preferable that the length of the second support portion 72 is greater than the length of the first support portion 71; the support frame 70 also includes a support foot 73 perpendicular to the first support portion 71, so that the side of the flange away from the steel pipe can fit against the support foot 73 to prevent the flange from detaching from the support frame 70.

[0031] Furthermore, the first support part 71, the second support part 72, and the support foot 73 are all plate-shaped structures. Since the steel pipe has a certain wall thickness, the thickness of the first support part 71 is configured to be greater than the thickness of the second support part 72, and the thickness of the first support part 71 is the same as the thickness of the support foot 73.

[0032] Furthermore, such as Figure 4 As shown, to facilitate the flange's side away from the steel pipe fitting against the support foot 73, the support frame 70 also includes a magnetic element 80 embedded in the support foot 73, thereby allowing the flange to be magnetically fixed to the support foot 73. Preferably, the magnetic element 80 is a neodymium magnet, and a mounting groove 731 is provided on the support foot 73. The magnetic element 80 is inserted into the mounting groove 731 and fixed by fastening bolts 101 and fastening nuts 102.

[0033] Furthermore, such as Figure 1 , Figure 5 As shown, the flange and steel pipe alignment auxiliary device also includes multiple pins 90. The first connecting rod 50 and the first connecting part 31 are movably connected by pins 90. The first connecting rod 50, the second connecting rod 60, and the support frame 70 are movably connected by pins 90. The second connecting rod 60 and the second connecting part 41 are movably connected by pins 90. Figure 4 In the middle, the inner side of the first support part 71 is provided with a connecting ear 74 that is connected to the pin 90.

[0034] Furthermore, the flange and steel pipe alignment auxiliary device also includes gaskets 103 disposed on both sides of the fixed seat 30, and the screw 10 passes through the fixed seat 30 and the gaskets 103, and can rotate flexibly in the fixed seat 30.

[0035] Furthermore, there are three of each of the first link 50, the second link 60, and the support frame 70, which are evenly distributed along the circumferential direction of the lead screw 10; in some embodiments, the number of the first link 50, the second link 60, and the support frame 70 may be four, five, etc.

[0036] In this embodiment, the adjusting member 20 is a nut welded to the lead screw 10, which the user can turn with a wrench to drive the lead screw 10 to rotate. In some embodiments, the adjusting member 20 is a handwheel welded to the lead screw 10, which the user can turn to drive the lead screw 10 to rotate, saving manpower.

[0037] Furthermore, in order to prevent the movable seat 40 from disengaging from the second end of the lead screw 10, a stop (not shown) is also provided at the second end of the lead screw 10.

[0038] Finally, it should be noted that if any directional indication (such as up, down, left, right, front, back, etc.) is involved in the embodiments of this application, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0039] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0040] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. An auxiliary device for aligning a flange with a steel pipe, characterized in that, include: A lead screw having a first end and a second end that are spaced apart from each other; An adjusting element is fixed to the first end of the lead screw; A fixing seat is sleeved on the lead screw and disposed adjacent to the adjusting member; the fixing seat has a first through hole in the middle for the lead screw to pass through, and the fixing seat has a plurality of first connecting parts along the circumferential direction; A movable seat is screwed to the lead screw and is disposed adjacent to the second end of the lead screw. The movable seat has a plurality of second connecting portions along the circumferential direction. The first link has multiple links, and the first end of each first link is movably connected to one of the first connecting parts. The second link has multiple links, and the first end of each second link is movably connected to the second end of one of the first links, and the second end of each second link is movably connected to one of the second connecting parts. The support frame has multiple supports, and the middle part of each support frame is connected to the joint part of the corresponding first link and second link; when the adjusting member drives the lead screw to rotate, the movable seat moves along the axial direction of the lead screw, causing the support frame to unfold or retract.

2. The flange and steel pipe alignment auxiliary device according to claim 1, characterized in that, The support frame includes a first support portion and a second support portion along its length, wherein the first support portion is close to the first end of the lead screw; the first support portion is used to support the inner wall of the flange, the second support portion is used to support the inner wall of the steel pipe, and the support frame also includes a support foot perpendicular to the first support portion.

3. The flange and steel pipe alignment auxiliary device according to claim 2, characterized in that, The first support portion, the second support portion, and the support foot are all plate-shaped structures. The thickness of the first support portion is greater than the thickness of the second support portion, and the thickness of the first support portion is the same as the thickness of the support foot.

4. The flange and steel pipe alignment auxiliary device according to claim 3, characterized in that, The support frame also includes magnetic components embedded in the support feet.

5. The flange and steel pipe alignment auxiliary device according to claim 4, characterized in that, The flange and steel pipe alignment auxiliary device also includes multiple pins. The first connecting rod and the first connecting part are movably connected by the pins. The first connecting rod, the second connecting rod, and the support frame are movably connected by the pins. The second connecting rod and the second connecting part are movably connected by the pins.

6. The flange and steel pipe alignment auxiliary device according to claim 5, characterized in that, The inner side of the first support is provided with a connecting lug that connects to the pin.

7. The flange and steel pipe alignment auxiliary device according to any one of claims 1 to 6, characterized in that, The flange and steel pipe alignment auxiliary device also includes gaskets disposed on both sides of the fixed base.

8. The flange and steel pipe alignment auxiliary device according to claim 7, characterized in that, There are three of each of the first link, the second link, and the support frame.

9. The flange and steel pipe alignment auxiliary device according to claim 8, characterized in that, The adjusting component is a nut welded to the lead screw.

10. The flange and steel pipe alignment auxiliary device according to claim 8, characterized in that, The adjusting component is a handwheel welded to the lead screw.

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