Auxiliary device for flanged pipe butt welding

Abstract

This utility model discloses an auxiliary device for flange pipe butt welding, including a base plate, two side plates, a positioning plate, and a shim block. The left and right ends of the upper surface of the base plate are respectively provided with lower square grooves; the lower ends of the two side plates are respectively connected to the left and right ends of the base plate; the lower ends of the side plates match the lower square grooves of the base plate; the left and right ends of the lower surface of the positioning plate are respectively connected to the upper ends of the side plates; the positioning plate is located above the base plate; a groove is provided at the front of the positioning plate; and the shim block is fixedly installed in the middle of the base plate. This utility model can avoid the problem of flange hole misalignment after welding deformation, ensuring the welding requirements of flange-to-pipe butt welding while saving labor and time costs.

Description

Technical Field

[0001] This utility model relates to a welding processing auxiliary equipment, specifically an auxiliary device for flange pipe butt welding. Background Technology

[0002] In the chemical and shipbuilding industries, flanged pipes are frequently used to connect two long sections of pipeline or to pipes that need to pass through walls. These flanged pipes are pipes with flanges at both ends, including an intermediate pipe whose ends are fixedly connected to the flanges by welding. In use, the flanged pipe is fixed to the pipes at both ends by welding flanges and bolts. Therefore, flanged pipes are widely used in various piping industries such as chemical and shipbuilding.

[0003] Because flanged pipes require welding to securely connect the flanges to the intermediate pipes, mass production of flanged pipes necessitates ensuring consistent overall length, parallel end faces of the upper and lower flanges, and consistent relative positions of the flange holes (i.e., parallel or perpendicular lines connecting any two holes). This prevents assembly issues such as misaligned bolt holes or pipes being too long or too short during installation. However, the wide application of flanged pipes results in a variety of models and lengths. Welding the flanges to the intermediate pipes requires simple tools such as angle irons, vises, gaskets, bolts, and frame levels for clamping and calibration, and necessitates the cooperation of two people to achieve the required welding specifications. This process is extremely cumbersome and time-consuming.

[0004] Specifically, the current welding method for flanged pipes adopts the following three-section approach:

[0005] ① Place the flange horizontally, add gaskets and intermediate pipes, one person uses angle iron to straighten the intermediate pipes, and another person spot welds around the perimeter;

[0006] ② Use a vise to horizontally clamp the spot-welded flange, suspend the flange at the other end of the middle pipe, place two bolts horizontally in the flange holes at both ends, and use a frame level to adjust the bolts at both ends to be in the horizontal plane.

[0007] ③ One person assists in keeping the flange stationary, while another person performs spot welding around it.

[0008] The above methods are extremely costly in terms of labor and time, and the frame level relies on manual visual inspection, resulting in low accuracy. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide an auxiliary device for butt welding of flange pipes. It can be used for mass production of flange pipes, and while ensuring the required welding accuracy, it can be operated by one person and the operation process is simple.

[0010] To solve the above-mentioned technical problems, the technical solution of the auxiliary device for flange pipe butt welding of this utility model is as follows:

[0011] The device includes a base plate 1, two side plates 3, a positioning plate 9, and a shim block 2. The left and right ends of the upper surface of the base plate 1 are respectively provided with lower square grooves 1-1; the lower ends of the two side plates 3 are respectively connected to the left and right ends of the base plate 1; the lower ends of the side plates 3 match the lower square grooves 1-1 of the base plate 1; the left and right ends of the lower surface of the positioning plate 9 are respectively connected to the upper ends of the side plates 3; the positioning plate 9 is located directly above the base plate 1; the front part of the positioning plate 9 is provided with a groove 9-1; and the shim block 2 is fixedly set in the middle of the base plate 1.

[0012] In another embodiment, an adjustment block 8 is provided between the positioning plate 9 and the two side plates 3 respectively.

[0013] In another embodiment, the groove 9-1 matches the intermediate pipe 7 of the flange pipe.

[0014] In another embodiment, an upper pin hole 9-2 is provided on one side of the groove of the positioning plate 9, and an upper round pin 10 is inserted into the upper pin hole 9-2; an upper waist hole 9-3 is provided on the other side of the groove, and an upper flat head pin 13 is inserted into the upper waist hole 9-3; the position and size of the upper pin hole 9-2 and the upper waist hole 9-3 correspond to the flange hole of the upper flange 11 of the flange pipe.

[0015] In another embodiment, upper square grooves 9-4 are respectively provided at the left and right ends of the lower surface of the positioning plate 9, and the upper square grooves 9-4 match the upper end of the side plate 3.

[0016] In another embodiment, handles 12 are provided on the left and right sides of the positioning plate 9, respectively.

[0017] In another embodiment, the shim block 2 is provided with a first pin hole 2-1, a second pin hole 2-2, and a lower waist hole 2-3. A lower round pin 6 passes through the first pin hole 2-1; a connecting round pin 14 passes through the second pin hole 2-2; and a lower flat head pin 4 passes through the lower waist hole 2-3. The positions and dimensions of the first pin hole 2-1 and the lower waist hole 2-3 correspond to the lower flange 5 of the flange pipe. The second pin hole 2-2 corresponds to the lower pin hole 1-2 of the base plate 1. The shim block 2 is fixedly connected to the base plate 1 by the connecting round pin 14.

[0018] In another embodiment, the upper pin hole 9-2 of the positioning plate 9 corresponds to the first pin hole 2-1 of the shim block 2, the upper waist hole 9-3 of the positioning plate 9 corresponds to the lower waist hole 2-3 of the shim block 2; and / or, the upper round pin 10 corresponds to the lower round pin 6, and the upper flat head pin 13 corresponds to the lower flat head pin 4.

[0019] In another embodiment, the lower waist hole 2-3 extends laterally; the upper waist hole 9-3 extends in the same direction as the lower waist hole 2-3.

[0020] In another embodiment, the bottom of the adjusting block 8 is provided with a square groove 8-1, which matches the upper end of the side plate 3; the top of the adjusting block 8 is provided with a square boss 8-2, which matches the upper square groove 9-4 on the lower surface of the positioning plate 9.

[0021] The technical effects that this utility model can achieve are:

[0022] This utility model is used for butt welding of flanged pipes, which can ensure that the upper and lower flanges of the flanged pipe are parallel and the positions of the upper and lower flange holes correspond.

[0023] This invention can prevent flange hole misalignment caused by welding deformation in advance, ensuring the welding requirements for flange-to-pipe connection while saving labor and time costs. Furthermore, this invention does not suffer from inconvenient installation and disassembly or high material costs. Attached Figure Description

[0024] Those skilled in the art will understand that the following description is merely illustrative of the principles of this invention, and these principles can be applied in various ways to achieve many different alternative implementations. These descriptions are only intended to illustrate the general principles of the teachings of this invention and are not intended to limit the inventive concept disclosed herein.

[0025] Embodiments of the present invention are illustrated in conjunction with the accompanying drawings, which are incorporated in and form part of this specification, and together with the foregoing general description and the following detailed description of the drawings, serve to explain the principles of the present invention.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] Figure 1 This is a schematic diagram of the auxiliary device for flange pipe butt welding according to this utility model;

[0028] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0029] Figure 3 This is a top view of the positioning plate of this utility model;

[0030] Figure 4 This is a bottom view of the positioning plate of this utility model;

[0031] Figure 5 This is a top view of the base plate of this utility model;

[0032] Figure 6 This is a top view of the shim block of this utility model;

[0033] Figure 7 This is a side view of the adjusting block of this utility model;

[0034] Figure 8 This is a bottom view of the adjustment block of this utility model;

[0035] Figure 9 This is a schematic diagram of the present invention from another angle.

[0036] Explanation of the reference numerals in the figure:

[0037] 1 is the base plate, 2 is the shim block.

[0038] 3 is the side plate, 4 is the lower flat head pin.

[0039] 5 is the lower flange, and 6 is the lower round pin.

[0040] 7 is the intermediate pipe, and 8 is the regulating block.

[0041] 9 is the positioning plate, and 10 is the upper round pin.

[0042] 11 is the upper flange, 12 is the handle.

[0043] 13 is the upper flat head pin, and 14 is the connecting round pin.

[0044] 1-1 is the lower square groove, and 1-2 is the lower pin hole.

[0045] 2-1 is the first pin hole, and 2-2 is the second pin hole.

[0046] 2-3 are lower waist holes.

[0047] 9-1 is a groove, and 9-2 is an upper pin hole.

[0048] 9-3 is the upper waist hole, and 9-4 is the upper square groove.

[0049] 8-1 is a square groove, and 8-2 is a square boss. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains. The terms "first," "second," and similar words used herein do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Words such as "comprising" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but does not exclude other elements or objects. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0051] like Figure 1 , Figure 2 As shown, the auxiliary device for flange pipe butt welding of this utility model includes a base plate 1, the left and right ends of which are respectively connected to the lower ends of side plates 3; the upper ends of the left and right side plates 3 are connected to the same positioning plate 9; the positioning plate 9 is located directly above the base plate 1; the positioning plate 9, the left and right side plates 3 and the base plate 1 form an operating cavity, which is used to accommodate the workpiece to be processed; the workpiece to be processed includes an intermediate pipe 7, an upper flange 11 and a lower flange 5;

[0052] A shim block 2 is installed inside the operating cavity, and the shim block 2 is fixedly installed in the middle of the base plate 1.

[0053] Preferably, an adjustment block 8 is provided between the positioning plate 9 and the side plate 3.

[0054] like Figure 3 As shown, the front part of the positioning plate 9 has a groove 9-1, which matches the intermediate pipe 7 of the workpiece to be processed. The intermediate pipe 7 of the workpiece to be processed can pass through the groove 9-1 of the positioning plate 9, and the upper flange 11 of the workpiece to be processed is supported by the positioning plate 9.

[0055] Two upper pin holes 9-2 are provided on one side of the groove of the positioning plate 9, and an upper round pin 10 is inserted into the upper pin hole 9-2; two upper waist holes 9-3 are provided on the other side of the groove, and an upper flat head pin 13 is inserted into the upper waist hole 9-3; the position and size of the upper pin hole 9-2 and the upper waist hole 9-3 correspond to the flange hole of the upper flange 11 of the workpiece to be processed.

[0056] like Figure 4As shown, upper square grooves 9-4 are respectively provided on the left and right ends of the lower surface of the positioning plate 9. The upper square grooves 9-4 match the upper end of the side plate 3 so that the upper end of the side plate 3 can extend into the upper square grooves 9-4, thereby realizing the fixed connection between the side plate 3 and the positioning plate 9.

[0057] Preferably, handles 12 are provided on the left and right sides of the positioning plate 9 to facilitate loading and unloading.

[0058] like Figure 5 As shown, lower square grooves 1-1 are respectively provided at the left and right ends of the upper surface of the base plate 1. The lower square grooves 1-1 match the lower end of the side plate 3 so that the lower end of the side plate 3 can extend into the lower square grooves 1-1, thereby realizing the fixed connection between the side plate 3 and the base plate 1.

[0059] Two lower pin holes 1-2 are provided in the middle of the base plate 1, and a connecting pin 14 is inserted into the lower pin holes 1-2.

[0060] like Figure 6 As shown, the raised block 2 has a first pin hole 2-1, two second pin holes 2-2 and a lower waist hole 2-3. A lower round pin 6 passes through the first pin hole 2-1; a connecting round pin 14 passes through the second pin holes 2-2; and a lower flat head pin 4 passes through the lower waist hole 2-3.

[0061] The positions and dimensions of the first pin hole 2-1 and the lower waist hole 2-3 correspond to the lower flange 5 of the workpiece to be processed;

[0062] The second pin hole 2-2 corresponds to the lower pin hole 1-2 of the base plate 1; the shim block 2 is fixedly connected to the base plate 1 by two connecting round pins 14, such as... Figure 9 As shown, the shim block 2 is used to support the lower flange 5 of the workpiece to be processed.

[0063] The shim block 2 of this utility model is fixedly connected to the base plate 1 by connecting pin 14; by simply removing the connecting pin 14, shim blocks 2 of different sizes can be flexibly replaced, so that the operating cavity can accommodate flange pipes of different lengths.

[0064] In this utility model, the upper pin hole 9-2 of the positioning plate 9 corresponds to the pin hole 2-1 of the shim block 2, and the upper waist hole 9-3 of the positioning plate 9 corresponds to the lower waist hole 2-3 of the shim block 2, so that the upper round pin 10 corresponds to the lower round pin 6, and the upper flat head pin 13 corresponds to the lower flat head pin 4, thereby ensuring that the positions of the upper and lower flange bolt holes of the flange pipe are consistent.

[0065] Furthermore, an adjustment block 8 is provided between the positioning plate 9 and the side plate 3 of this utility model. By simply replacing the adjustment block 8 with one of different thicknesses, the height of the operating cavity can be increased, thereby enabling the operating cavity to accommodate flange pipes of a longer size.

[0066] like Figures 7 to 8 As shown, the bottom of the adjusting block 8 is provided with a square groove 8-1, which matches the upper end of the side plate 3 so that the upper end of the side plate 3 can extend into the square groove 8-1, thereby achieving a fixed connection between the side plate 3 and the adjusting block 8; the top of the adjusting block 8 is provided with a square boss 8-2, which matches the upper square groove 9-4 on the lower surface of the positioning plate 9 so that the top of the adjusting block 8 can extend into the lower surface of the positioning plate 9, thereby achieving a fixed connection between the adjusting block 8 and the positioning plate 9.

[0067] This utility model ensures the parallelism of the upper and lower flanges of the flanged pipe by means of the parallelism between the upper surface of the positioning plate 9 and the upper surface of the shim block 2; and ensures the perpendicularity between the upper and lower flanges of the flanged pipe and the middle pipe by means of the perpendicularity between the upper surface of the positioning plate 9 and the side plate 3.

[0068] This invention can meet the butt welding requirements of flange pipes of any size.

[0069] The working principle of this utility model is as follows:

[0070] Before use, first mate the lower round pin 6 with the first pin hole 2-1, the lower flat head pin 4 with the lower waist hole 2-3, the upper round pin 10 with the upper pin hole 9-2, and the upper flat head pin 13 with the upper waist hole 9-3. Since the lower waist hole 2-3 and the upper waist hole 9-3 extend laterally, the upper flat head pin 13 and the lower flat head pin 4 can move laterally within the lower waist hole 2-3 and the upper waist hole 9-3 respectively, so as to ensure that the flange holes with center distance errors can also be smoothly assembled with the flat head pins.

[0071] In use, place the lower flange 5, the intermediate pipe 7, and the upper flange 11 in sequence; then, spot weld the weld seams H1 and H2. The entire process is simple, convenient, and time-saving, and can be completed by one person in a short time.

[0072] This invention, through the design of the various plates, holes, and pins, can meet the butt welding requirements of multiple types of pipe flanges. This invention is easy to install and remove, simple to operate, and has low material costs, significantly reducing labor and time costs. It is suitable for applications requiring butt welding of flanged pipes in shipbuilding, chemical, and other fields.

[0073] The materials used in this invention can be carbon steel, cast iron, stainless steel, or aluminum alloy.

[0074] This invention can be used for the mass production of flange pipes.

[0075] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An auxiliary device for butt welding of flanged pipes, characterized in that, include: The base plate has square grooves on its upper surface at both the left and right ends; Two side plates, the lower ends of which are respectively connected to the left and right ends of the base plate; the lower ends of the side plates match the lower square groove of the base plate; A positioning plate, with its lower surface having left and right ends connected to the upper ends of the side plates respectively; the positioning plate is located above the base plate; a groove is provided at the front of the positioning plate; and The shim is fixedly installed in the middle of the base plate.

2. The auxiliary device for flange pipe butt welding according to claim 1, characterized in that, Adjustment blocks are respectively provided between the positioning plate and the two side plates.

3. The auxiliary device for flange pipe butt welding according to claim 1, characterized in that, The groove matches the middle pipe of the flange pipe.

4. The auxiliary device for flange pipe butt welding according to claim 1, characterized in that, The positioning plate has an upper pin hole on one side of the groove, and an upper round pin passes through the upper pin hole; an upper waist hole is provided on the other side of the groove, and an upper flat head pin passes through the upper waist hole; the position and size of the upper pin hole and the upper waist hole correspond to the flange hole of the upper flange of the flange pipe.

5. The auxiliary device for flange pipe butt welding according to claim 1, characterized in that, The lower surface of the positioning plate has upper square grooves at its left and right ends, which match the upper end of the side plate.

6. The auxiliary device for flange pipe butt welding according to claim 1, characterized in that, The positioning plate is provided with handles on its left and right sides respectively.

7. The auxiliary device for flange pipe butt welding according to claim 1, characterized in that, The shim block has a first pin hole, a second pin hole, and a lower waist hole. A lower round pin passes through the first pin hole; a connecting round pin passes through the second pin hole; and a lower flat head pin passes through the lower waist hole. The position and size of the first pin hole and the lower waist hole correspond to the lower flange of the flange pipe. The second pin hole corresponds to the lower pin hole of the base plate. The shim block is fixedly connected to the base plate by the connecting round pin.

8. The auxiliary device for flange pipe butt welding according to claim 7, characterized in that, The upper pin hole of the positioning plate corresponds to the first pin hole of the shim block, and the upper waist hole of the positioning plate corresponds to the lower waist hole of the shim block; and / or, the upper round pin corresponds to the lower round pin, and the upper flat head pin corresponds to the lower flat head pin.

9. The auxiliary device for flange pipe butt welding according to claim 8, characterized in that, The lower waist hole extends laterally; the upper waist hole extends in the same direction as the lower waist hole.

10. The auxiliary device for flange pipe butt welding according to claim 2, characterized in that, The bottom of the adjusting block is provided with a square groove, which matches the upper end of the side plate; the top of the adjusting block is provided with a square boss, which matches the upper square groove on the lower surface of the positioning plate.

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