Positioning device

Abstract

The utility model provides a positioning device, which is used for fixing the relative position of a first connecting piece and a second connecting piece, and comprises a first positioning part, a second positioning part and a third positioning part, the second positioning part comprises a second abutting part used for abutting against the second connecting piece; the adjusting assembly comprises an adjusting part which is in driving connection with the first positioning part and the second positioning part; the adjusting component drives the first positioning component and the second positioning component to move along the adjusting component, so that the first abutting part abuts against the first connecting piece, and the second abutting part abuts against the second connecting piece. The positioning device solves the technical problem that the welding error of the flange is large in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of flange welding, in particular to a positioning device. Background Art

[0002] The flange itself is a disc-shaped part used to connect pipes. The development background of flange welding technology is mainly to solve the problems of low efficiency and poor quality consistency of traditional manual welding methods. The main goal of flange welding technology is to improve welding quality and efficiency while reducing production costs.

[0003] Pipe flange welding is to connect the flange to the pipe by welding, which is mainly used for the connection of pipeline systems. Flange welding can be divided into "flat welding" and "butt welding". Flat welding is mainly used for butt welding of flat flanges, and butt welding is mainly used for butt welding of flanges. The difference between flat welding flanges and butt welding flanges is whether there is a neck. Flat welding flanges only need one flange ring. When welding with the nozzle, the welding angle must be 90 degrees. We call it flat welding; butt welding flanges have flange necks. The flange neck has the same diameter as the nozzle. When the flanges are butt-jointed, the interface must be a 45° groove. The nozzle and the flange neck are 180° and are directly welded in the groove. This is called butt welding.

[0004] However, no matter which pipe flange welding method is used, it is necessary to ensure that the flange is perpendicular to the center line of the pipeline. Due to the difference in the shape of the flange and the pipeline, the pipeline base, clamps and positioning devices need to be arranged during welding to ensure the quality of flange welding. However, during on-site construction, the conditions are limited, and the flange is often placed on the ground, and the center of the pipeline is adjusted by hand-held steel pipes. The flange is spot welded and leveled before welding. However, this manual operation process has large errors, which may lead to insufficient strength and toughness of the welded joint, and even welding defects such as cracking, pores, slag inclusions, etc.

[0005] Therefore, the prior art needs to be further developed. Utility Model Content

[0006] The purpose of the utility model is to overcome the above technical deficiencies and provide a positioning device to solve the technical problem of large welding error of flanges in the related art.

[0007] In order to achieve the above-mentioned technical purpose, the utility model adopts the following technical solutions: a positioning device is provided for fixing the relative positions of the first connecting member and the second connecting member, including: a first positioning component, including a first abutting portion for abutting against the first connecting member; a second positioning component, including a second abutting portion for abutting against the second connecting member; an adjusting component, the adjusting component including an adjusting component that is driven and connected to both the first positioning component and the second positioning component; the first positioning component and the second positioning component are driven to move along the adjusting component by the adjusting component, so that the first abutting portion abuts against the first connecting member, and the second abutting portion abuts against the second connecting member.

[0008] Furthermore, the adjusting component extends along a preset direction, an external thread is arranged on the peripheral side of the adjusting component, and the first positioning component and the second positioning component are provided with internal threads matching the external threads; by rotating the adjusting component, the first positioning component and the second positioning component are moved closer to or farther away from each other.

[0009] Furthermore, the first positioning component is provided with a first connecting hole, and the adjusting component is inserted into the first connecting hole; the second positioning component is provided with a second connecting hole, and the adjusting component is inserted into the second connecting hole.

[0010] Furthermore, the first positioning component includes: a first support member, on which a first abutting portion for abutting against the first connecting member and the second connecting member is provided; a connecting block connected to the first support member, on which a first connecting hole is provided, and an internal thread is provided in the first connecting hole.

[0011] Furthermore, the first support member includes a first support plate and a second support plate connected to each other, both the first support plate and the second support plate are provided with a first abutment portion, the first support plate and the second support plate are relatively inclined, and the connecting block is located between the first support plate and the second support plate.

[0012] Further, one end of the first support plate is connected to the second support plate, and the other end of the first support plate is bent to form a first abutment portion; and / or one end of the second support plate is connected to the second support plate, and the other end of the second support plate is bent to form a first abutment portion.

[0013] Furthermore, the first positioning component is provided with a first abutting surface for abutting against the first connecting member, and the first abutting surface is a curved surface.

[0014] Further, there are a plurality of first abutting portions, and the plurality of first abutting portions are arranged at intervals; and / or there are a plurality of second abutting portions, and the plurality of second abutting portions are arranged at intervals.

[0015] Furthermore, the adjustment assembly includes an adjustment cross bar, which is inserted into the adjustment component and passes through the axis of the adjustment component.

[0016] Further, the adjusting cross bar is located between the first positioning component and the second positioning component; and / or, the adjusting cross bar includes a first adjusting portion and a second adjusting portion located on opposite sides of the adjusting component.

[0017] Beneficial effects:

[0018] 1. The positioning device of the utility model eliminates the need to install a pipe base, a clamp and a positioning device, etc., reduces the requirements for flange welding machinery and equipment, and reduces construction costs.

[0019] 2. The positioning device of the utility model reduces the influence of manual welding errors and reduces the loss of manpower and materials.

[0020] 3. The positioning device of the utility model is applied in every small and medium-sized construction site, reducing the extra production expenditure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the working state of the positioning device used in the embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the positioning device used in the embodiment of the utility model.

[0023] The above drawings include the following reference numerals:

[0024] 10. first connecting member; 20. second connecting member;

[0025] 1. First positioning component; 11. First abutting portion; 13. First support member; 131. First support plate; 132. Second support plate; 14. Connecting block; 15. First abutting surface; 2. Second positioning component; 21. Second abutting portion; 3. Adjusting assembly; 31. Adjusting component; 32. Adjusting cross bar; 321. First adjusting portion; 322. Second adjusting portion. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] According to an embodiment of the present utility model, a positioning device is provided for fixing the relative position of the first connecting member 10 and the second connecting member 20. Figure 1 to Figure 2, including: a first positioning component 1, including a first abutting portion 11 for abutting against the first connecting member 10; a second positioning component 2, including a second abutting portion 21 for abutting against the second connecting member 20; an adjusting component 3, the adjusting component 3 including an adjusting component 31 drivingly connected to both the first positioning component 1 and the second positioning component 2; the first positioning component 1 and the second positioning component 2 are driven by the adjusting component 31 to move along the adjusting component 31, so that the first abutting portion 11 abuts against the first connecting member 10, and the second abutting portion 21 abuts against the second connecting member 20. With the above arrangement, the first connecting member 10 and the second connecting member 20 are supported and fixed by driving the first positioning component 1 and the second positioning component 2, and the above positioning device is applied to the flange welding process. Through the cooperation of the components in the device, stable and effective welding conditions are provided for the flange welding operation, reducing the redundant process of alignment and alignment of the flanges required by the construction personnel when welding the pipeline flanges. The flange center can be quickly and effectively aligned, so that the flange plane is perpendicular to the pipe section, and the flange center coincides with the pipe center, providing effective assistance for pipe flange welding and solving the technical problem of large flange welding error in related technologies.

[0028] In the positioning device of this embodiment, the adjusting component 31 extends along a preset direction, an external thread is provided on the circumferential side of the adjusting component 31, and an internal thread matching the external thread is provided on the first positioning component 1 and the second positioning component 2; by rotating the adjusting component 31, the first positioning component 1 and the second positioning component 2 are moved closer to or farther away from each other.

[0029] Specifically, the adjusting component 31 is a bidirectional threaded strut with two sections of threads, and the two sections of threads are opposite to each other and are connected to the internal threaded fasteners fixed on the first positioning component 1 and the second positioning component 2 to form a positive and negative thread push rod. When in use, the push rod is twisted to rotate the bidirectional threaded strut, thereby adjusting the distance between the internal threaded fasteners fixed on the first positioning component 1 and the second positioning component 2, so that the first positioning component 1 and the second positioning component 2 are pressed against the inner wall of the pipe to be welded, providing a fastening force between the auxiliary welding device and the welding pipe, and ensuring that the clamping plate is parallel to the pipe, avoiding horizontal displacement of the clamping plate due to the auxiliary welding device being not firmly fixed.

[0030] In the positioning device of this embodiment, see Figure 1 , Figure 2 The first positioning component 1 is provided with a first connecting hole, and the adjusting component 31 is inserted into the first connecting hole; the second positioning component 2 is provided with a second connecting hole, and the adjusting component 31 is inserted into the second connecting hole.

[0031] Specifically, the main adjustment device of the positioning device of this embodiment is the adjustment component 31, and the adjustment component 31 is detachably connected to the first positioning component 1 and the second positioning component 2. When dealing with welding tasks with a large specification span, support rods of different lengths can be replaced at any time, and the connection method between the support rods and each component is simple, which is convenient for replacement.

[0032] In the positioning device of this embodiment, the first positioning component 1 includes: a first support member 13, on which a first abutting portion 11 for abutting against the first connecting member 10 and the second connecting member 20 is provided; a connecting block 14, which is connected to the first support member 13, and a first connecting hole is provided on the first connecting hole, and an internal thread is provided in the first connecting hole. In this way, the length of the internal thread can be increased, so that the positioning function of the device is more effective.

[0033] In order to make the structure of the positioning device more stable, in the positioning device of this embodiment, see Figure 2 The first support member 13 includes a first support plate 131 and a second support plate 132 connected to each other, and the first support plate 131 and the second support plate 132 are both provided with a first abutting portion 11. The first support plate 131 and the second support plate 132 are relatively inclined and arranged, and the connecting block 14 is located between the first support plate 131 and the second support plate 132.

[0034] In the positioning device of this embodiment, one end of the first support plate 131 is connected to the second support plate 132, and the other end of the first support plate 131 is bent to form the first abutting portion 11; and / or one end of the second support plate 132 is connected to the second support plate 132, and the other end of the second support plate 132 is bent to form the first abutting portion 11. In this way, the manufacturing cost of the positioning device is reduced.

[0035] In the positioning device of this embodiment, the first positioning component 1 is provided with a first abutting surface 15 for abutting against the first connecting member 10 , and the first abutting surface 15 is an arc surface.

[0036] In the positioning device of this embodiment, there are multiple first abutting portions 11, which are arranged at intervals; and / or there are multiple second abutting portions 21, which are arranged at intervals.

[0037] See also Figure 2 In the positioning device of this embodiment, the adjustment component 3 includes an adjustment cross bar 32 , which is inserted into the adjustment component 31 , and the adjustment cross bar 32 passes through the axis of the adjustment component 31 .

[0038] The above arrangement makes the positioning device simple in structure, without complicated machinery and operation and maintenance, thus meeting the requirements of complex pipeline construction environment. Each component can be disassembled at any time, has a small size and is easy to carry.

[0039] Specifically, when in use, the adjusting cross bar 32 is twisted to rotate the adjusting component 31, thereby adjusting the distance between the first positioning component 1 and the second positioning component 2, so that the first positioning component 1 and the second positioning component 2 are pressed against the inner wall of the pipe to be welded, providing a fastening force between the auxiliary welding device and the welding pipe, and ensuring that the clamping plate is parallel to the pipe, avoiding horizontal deviation of the clamping plate caused by the auxiliary welding device being not firmly fixed.

[0040] See also Figure 2 In the positioning device of this embodiment, the adjustment cross bar 32 is located between the first positioning component 1 and the second positioning component 2; and / or, the adjustment cross bar 32 includes a first adjustment portion 321 and a second adjustment portion 322 located on opposite sides of the adjustment component 31. The above arrangement makes the positioning device easy to operate without additional parameter adjustment. After the first positioning component 1 and the second positioning component 2 are pressed against the inner wall of the pipe to be welded, a reliable alignment position can be provided.

[0041] Embodiment 1:

[0042] The first positioning component 1 and the second positioning component 2 are components with the same structure to avoid difficulty in distinguishing the components. The length of both sides of the first positioning component 1 is 70mm, the thickness is 6mm, and the edges at both ends are designed with curling to avoid damage to the inner wall of the pipe during the tightening process. The angle between the first support plate 131 and the second support plate 132 of the first positioning component 1 is 90 degrees. The internal thread fastener (i.e., the connecting block 14) on the first positioning component 1 is a triangular prism structure with internal thread holes. The triangular prism structure column is welded and fixed on the first support member 13. The prism hole coincides with the hole on the first support member 13. The length of the triangular prism is 30mm, and the height from the bottom side of the triangle to the top is 15mm. The adjustment component 31 can adjust the distance up to 70mm, which meets the welding requirements of most small and medium-sized flanges. The adjustment components 31 of different lengths can be replaced to meet the welding requirements of flanges of more specifications.

[0043] The method of using the positioning device of this embodiment is as follows:

[0044] 1. Before welding the pipe, place the pipe to be welded horizontally and clean the cutting welding slag.

[0045] 2. Place the positioning device of this embodiment, starting with the second positioning component 2, into the pipe to be welded. After the adjustable component 31 is completely in the pipe, adjust the position of the second positioning component 2 to make it fit the inner wall of the pipe to be welded. Then move the adjusting cross bar 32 to rotate the adjusting component 31, thereby driving the first positioning component 1 and the second positioning component 2 to press against the inner wall of the pipe to be welded.

[0046] 3. After confirming that the positioning device is tightened, hang the flange to be welded on the first positioning component 1, manually push the position of the flange on the first positioning component 1, adjust the weld width, and then proceed with the welding operation.

[0047] 4. After the welding operation is completed, twist the adjusting cross bar 32, and the first positioning component 1 and the second positioning component 2 can be loosened and taken out from the flange opening.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0049] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0050] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0051] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0052] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A positioning device for fixing the relative position of a first connecting member (10) and a second connecting member (20), characterized in that: include: A first positioning component (1) comprising a first abutting portion (11) for abutting against the first connecting member (10); A second positioning component (2) comprising a second abutting portion (21) for abutting against the second connecting member (20); An adjusting component (3), the adjusting component (3) comprising an adjusting component (31) drivingly connected to both the first positioning component (1) and the second positioning component (2); the adjusting component (31) drives the first positioning component (1) and the second positioning component (2) to move along the adjusting component (31), so that the first abutting portion (11) abuts against the first connecting member (10), and the second abutting portion (21) abuts against the second connecting member (20).

2. The positioning device according to claim 1, characterized in that: The adjusting component (31) extends along a preset direction, an external thread is arranged on the circumference of the adjusting component (31), and the first positioning component (1) and the second positioning component (2) are provided with internal threads matching the external threads; by rotating the adjusting component (31), the first positioning component (1) and the second positioning component (2) are moved closer to or farther from each other.

3. The positioning device according to claim 2, characterized in that: The first positioning component (1) is provided with a first connection hole, and the adjusting component (31) is inserted into the first connection hole; the second positioning component (2) is provided with a second connection hole, and the adjusting component (31) is inserted into the second connection hole.

4. The positioning device according to claim 3, characterized in that: The first positioning component (1) comprises: A first supporting member (13), wherein the first supporting member (13) is provided with a first abutting portion (11) for abutting against the first connecting member (10) and the second connecting member (20); A connecting block (14) is connected to the first supporting member (13); the first connecting hole is arranged on the first connecting hole; and the internal thread is arranged in the first connecting hole.

5. The positioning device according to claim 4, characterized in that: The first support member (13) comprises a first support plate (131) and a second support plate (132) which are connected to each other, the first support plate (131) and the second support plate (132) are both provided with the first abutting portion (11), the first support plate (131) and the second support plate (132) are arranged to be inclined relative to each other, and the connecting block (14) is located between the first support plate (131) and the second support plate (132).

6. The positioning device according to claim 5, characterized in that: One end of the first support plate (131) is connected to the second support plate (132), and the other end of the first support plate (131) is bent to form the first abutting portion (11); and / or, One end of the second support plate (132) is connected to the second support plate (132), and the other end of the second support plate (132) is bent to form the first abutting portion (11).

7. The positioning device according to claim 1, characterized in that: The first positioning component (1) is provided with a first abutting surface (15) for abutting against the first connecting member (10), and the first abutting surface (15) is an arc surface.

8. The positioning device according to claim 1, characterized in that: There are a plurality of the first abutting portions (11), and the plurality of the first abutting portions (11) are arranged at intervals; and / or, There are a plurality of the second abutting portions (21), and the plurality of the second abutting portions (21) are arranged at intervals.

9. The positioning device according to claim 1, characterized in that: The adjustment assembly (3) comprises an adjustment cross bar (32), wherein the adjustment cross bar (32) is inserted into the adjustment component (31), and the adjustment cross bar (32) passes through the axis of the adjustment component (31).

10. The positioning device according to claim 9, characterized in that: The adjusting cross bar (32) is located between the first positioning component (1) and the second positioning component (2); and / or, The adjusting cross bar (32) comprises a first adjusting portion (321) and a second adjusting portion (322) located on opposite sides of the adjusting component (31).

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