Heterogeneous welding structure for cavity pipe fitting

Abstract

The utility model relates to the technical field of pipe fitting welding, in particular to a cavity pipe fitting heterogeneous welding structure which comprises an auxiliary mechanism, and the auxiliary mechanism comprises main body pipes connected to the two ends of a heterogeneous pipe and insertion pipes inserted into the heterogeneous pipe. The inserting pipes are fixedly connected with the main body pipe and located at the two ends of the main body pipe, and joint concave surfaces are arranged between the main body pipe and the inserting pipes; the device further comprises a connecting piece and a hose clamp. The connecting piece comprises a contact plate which is connected to the outer surface of the main body pipe in a sleeving mode and used for increasing the drop point area of a welding spot. The hose clamp is sleeved on the contact plate and is used for limiting the main body pipe and the contact plate; by arranging the auxiliary mechanism, the connecting piece and the hose clamp, a welding machine is used for sequentially welding and fixing the contact piece, the main body pipe and the heterogeneous pipes, so that more stable connection can be completed, the arrangement is convenient for workers to manually support, the two heterogeneous pipes can be fixed, the welding work is facilitated, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe welding technology, specifically to a heterogeneous welding structure for cavity pipe fittings. Background Technology

[0002] Pipe welding is one of the main methods of pipe connection and installation. Welding has the advantages of high connection stability, good sealing and high structural strength.

[0003] During pipe welding, sometimes the two pipe fittings to be welded are made of different materials. The weld joints of fittings made of different materials are not very strong and are prone to falling off. A common solution is to add metal strips or metal sheets / plates to assist the welding. The workers wrap the metal strips around the joint of the two pipes and use welding rods for different metal materials to weld the metal strips onto the two pipes respectively. Although this method is simple and direct, during the welding process, the workers need to hold the metal strip with one hand and operate the welding gun with the other. The heat from the metal strip will be transferred to the workers' hands during welding, which can easily cause burns and is quite inconvenient.

[0004] Therefore, we propose a heterogeneous welding structure for cavity pipe fittings. Utility Model Content

[0005] One of the technical problems this application aims to solve is that existing welding of dissimilar pipelines involves welding metal strips, sheets, or plates between two pipes. However, during actual operation, workers need to hold the metal strip or sheet / plate with one hand and operate the welding torch with the other. The heat from the metal strip during welding is transferred to the worker's hand, which can easily cause burns and is quite inconvenient.

[0006] To address the aforementioned technical problems, this application provides a heterogeneous welding structure for a cavity tube, including an auxiliary mechanism. The auxiliary mechanism includes a main tube connected to both ends of the heterogeneous tube, and insertion tubes respectively inserted into the heterogeneous tube. The insertion tubes are fixedly connected to the main tube and located at both ends of the main tube, with a mating concave surface provided between the main tube and the insertion tubes. The structure also includes a connector and a hose clamp. The connector includes a contact plate sleeved on the outer surface of the main tube to increase the weld area. A welding rod is used to weld along the angle between the contact plate and the heterogeneous tube, so that the weld pattern surrounds the edge of the contact plate, and then the welding rod extends along the seam between the main tube and the two heterogeneous tubes. The hose clamp is sleeved on the contact plate to limit the movement of the main tube and the contact plate.

[0007] In some embodiments, a plurality of contact plates are movably mounted on the main tube, and contact pieces are provided at both ends of the contact plates, the contact pieces respectively fitting against the outer surface of the heterogeneous tube.

[0008] In some embodiments, both the contact plate and the contact piece are provided with anti-slip rubber sheets on the side facing the heterogeneous tube.

[0009] In some embodiments, the contact plate has a plurality of equally spaced fastening grooves, and the hose clamp is correspondingly disposed in the fastening grooves.

[0010] In some embodiments, the contact plate has a pair of extension plates at its center and also includes a fastener, the fastener including a screw disposed on the main body tube, the contact plate being movable along the axial direction of the screw.

[0011] In some embodiments, a threaded nut is threaded onto the screw, and a sealing film is provided at the bottom of the threaded nut.

[0012] In some embodiments, both ends of the connector are provided with chamfered surfaces.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. By setting up auxiliary mechanisms, connectors and hose clamps, the contact plate and main tube are welded and fixed to the heterogeneous tube in sequence using a welding machine, which can complete a more stable connection and facilitate operation. This setting makes it easy for workers to manually support and can fix the two heterogeneous tubes, which helps the welding work and improves practicality.

[0015] 2. By setting screws and screw caps, the contact plate becomes flexible, making it easy to adjust for use with heterogeneous tubes of different thicknesses. It has high applicability, and the adjustment operation is simple and convenient, requiring no tools. It is suitable for use by a wide range of personnel, further improving its practicality and providing convenience for welding work. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of the auxiliary mechanism and the two heterogeneous tubes in operation;

[0017] Figure 2 This is a schematic diagram of the auxiliary mechanism structure of this utility model;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A in the diagram;

[0019] Figure 4 for Figure 2 A schematic diagram of the three-dimensional structure of the explosion;

[0020] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0021] In the diagram: 1. Auxiliary mechanism; 101. Main tube; 102. Insert tube; 103. Joint concave surface; 104. Chamfered surface; 2. Connector; 201. Contact plate; 202. Contact piece; 203. Extension plate; 204. Anti-slip film; 205. Fastening groove; 3. Fastener; 301. Screw; 302. Threaded nut; 303. Sealing film; 4. Hose clamp. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] Please see Figures 1 to 4 The technical solution provided by this utility model is as follows: a heterogeneous welding structure for a cavity tube, including an auxiliary mechanism 1. The auxiliary mechanism 1 includes a main tube 101 connected to both ends of the heterogeneous tube, and insertion tubes 102 respectively inserted into the heterogeneous tube. The insertion tubes 102 are fixedly connected to the main tube 101 and located at both ends of the main tube 101. A joint concave surface 103 is provided between the main tube 101 and the insertion tubes 102. It also includes a connector 2 and a hose clamp 4. The connector 2 includes a contact plate 201 sleeved on the outer surface of the main tube 101 to increase the landing area of ​​the weld point.

[0025] During welding, the welding rod is used to weld along the angle between the contact plate 201 and the heterogeneous tube, so that the weld pattern surrounds the edge of the contact plate 201, and then the welding rod extends along the seam between the main tube 101 and the heterogeneous tubes on both sides.

[0026] The hose clamp 4 is fitted onto the contact plate 201 to limit the main tube 101 and the contact plate 201. Multiple contact plates 201 are movably installed on the main tube 101. Contact pieces 202 are provided at both ends of the contact plate 201, and the contact pieces 202 are respectively attached to the outer surface of the heterogeneous tube.

[0027] In this embodiment, as Figures 1 to 4As shown, during installation, the insertion tube 102 is inserted into the two pre-welded and fixed heterogeneous tubes respectively. The insertion tube 102 is adapted to the heterogeneous tubes, and the inner and outer walls are in contact with each other. At this time, the contact plate 201 is attached to the outer wall of the heterogeneous tubes respectively. After locking and fixing the hose clamp 4, the two heterogeneous tubes can be limited and fixed. Then, the workers use welding rods for the materials of the two heterogeneous tubes respectively, and use a welding machine to weld and fix the contact plate 202 and the main tube 101 to the heterogeneous tubes in sequence, which can complete a more stable connection and facilitate the operation. This setting makes it easy for workers to manually support and can fix the two heterogeneous tubes, which helps the welding work and improves practicality.

[0028] In this embodiment, as Figure 2 and Figure 4 As shown, both the contact plate 201 and the contact piece 202 are provided with anti-slip rubber sheets 204 on the side facing the heterogeneous tube. This setting has the function of anti-slip and wear resistance, and is convenient for installation and fixing.

[0029] In this embodiment, as Figure 2 and Figure 4 As shown, the contact plate 201 has multiple equally spaced fastening grooves 205, and the hose clamp 4 is correspondingly placed in the fastening grooves 205. This arrangement facilitates the limiting of the hose clamp 4, prevents the hose clamp 4 from shifting, and improves the installation stability.

[0030] In this embodiment, as Figure 2 and Figure 3 As shown, a pair of extension plates 203 are provided in the middle of the contact plate 201, and a fastener 3 is also included. The fastener 3 includes a screw 301 provided on the main tube 101. The screw 301 is fixed on the main tube 101, and the contact plate 201 can move along the axial direction of the screw 301. The extension plate 203 has a hole with a diameter larger than that of the screw 301. This setting facilitates the vertical movement of the contact plate 201 on the screw 301, so that the contact plate 201 can be adjusted according to the thickness of the heterogeneous tube, which improves flexibility and practicality.

[0031] In this embodiment, as Figure 2 and Figure 3 As shown, a screw cap 302 is threaded onto the screw 301. A sealing film 303 is provided at the bottom of the screw cap 302. The sealing film 303 is made of rubber. It deforms after being squeezed by the screw cap 302 and the extension plate 203, making the connection tighter and improving the stability of the contact plate 201.

[0032] In this embodiment, as Figure 2 and Figure 3As shown, when adjusting according to thickness, loosen the nut 302 counterclockwise to move it away from the extension plate 203. Stop when the extension plate 203 has sufficient room to move. Move the contact plate 201 outward to fit it against the outer surface of the heterogeneous tube. Loosen the nut 302 clockwise to complete the fixation. This setting makes the contact plate 201 flexible, making it easy to adjust and use according to heterogeneous tubes of different thicknesses. It has high applicability, and the adjustment operation is simple and convenient, without the need for tools. It is suitable for use by a wide range of people, further improving its practicality and providing convenience for welding work.

[0033] The implementation principle of the heterogeneous welding structure of the cavity pipe fitting in this application embodiment is as follows: During installation, the insertion pipe 102 is inserted into the two heterogeneous pipes that are pre-welded and fixed. The insertion pipe 102 is adapted to the heterogeneous pipes, and the inner and outer walls are in contact with each other. At this time, the contact plate 201 is attached to the outer wall of the heterogeneous pipes. After locking and fixing the hose clamp 4, the two heterogeneous pipes can be limited and fixed. Then, the workers use welding rods for the materials of the two heterogeneous pipes and use a welding machine to weld and fix the contact plate 202 and the main pipe 101 to the heterogeneous pipes in sequence, which can complete a more stable connection and facilitate operation. This setting is convenient for workers to manually support and can fix the two heterogeneous pipes, which helps the welding work and improves practicality.

[0034] During welding, the welding rod is used to weld along the angle between the contact plate 201 and the heterogeneous tube, so that the weld pattern surrounds the edge of the contact plate 201, and then the welding rod extends along the seam between the main tube 101 and the heterogeneous tubes on both sides.

[0035] During adjustment, loosen the nut 302 counterclockwise to move it away from the extension plate 203. Stop when the extension plate 203 has sufficient room to move. Move the contact plate 201 outward to fit it against the outer surface of the heterogeneous tube. Loosen the nut 302 clockwise to complete the fixation. This design makes the contact plate 201 flexible, making it easy to adjust and use according to heterogeneous tubes of different thicknesses. It has high applicability, and the adjustment operation is simple and convenient, without the need for tools. It is suitable for use by a wide range of people, further improving its practicality and providing convenience for welding work.

[0036] Example 2:

[0037] Please see Figure 5 The technical solution provided by this utility model is as follows:

[0038] Unlike Embodiment 1, both ends of the insertion tube 102 are provided with chamfered surfaces 104. Both the insertion tube 102 and the chamfered surfaces 104 are located inside the heterogeneous tube. The insertion tube 102 fits against the inner wall of the heterogeneous tube. The chamfered surfaces 104 can reduce the angle between the insertion tube 102 and the inner wall of the heterogeneous tube, thereby increasing the flow rate of the liquid, preventing impurities from accumulating and causing pipeline blockage, and improving practicality.

[0039] 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 process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A heterogeneous welding structure for a cavity pipe fitting, comprising an auxiliary mechanism (1), characterized in that: The auxiliary mechanism (1) includes a main tube (101) connected to both ends of the heterogeneous tube, and insertion tubes (102) respectively inserted into the heterogeneous tube. The insertion tube (102) is fixedly connected to the main tube (101) and is located at both ends of the main tube (101). A mating concave surface (103) is provided between the main tube (101) and the insertion tube (102). It also includes connectors (2) and hose clamps (4); The connector (2) includes a contact plate (201) sleeved on the outer surface of the main tube (101) to increase the landing area of ​​the weld point; The welding rod is used to weld along the angle between the contact plate (201) and the heterogeneous tube, so that the weld pattern surrounds the edge of the contact plate (201), and then the welding rod extends along the seam between the main tube (101) and the heterogeneous tubes on both sides. The hose clamp (4) is fitted onto the contact plate (201) to limit the main tube (101) and the contact plate (201).

2. The heterogeneous welding structure of a cavity pipe fitting according to claim 1, characterized in that: Multiple contact plates (201) are movably mounted on the main tube (101), and contact pieces (202) are provided at both ends of the contact plates (201), and the contact pieces (202) are respectively attached to the outer surface of the heterogeneous tube.

3. The heterogeneous welding structure of a cavity pipe fitting according to claim 2, characterized in that: Both the contact plate (201) and the contact piece (202) are provided with anti-slip film (204) on the side facing the heterogeneous tube.

4. The heterogeneous welding structure of a cavity pipe fitting according to claim 2, characterized in that: The contact plate (201) has multiple equally spaced fastening grooves (205), and the hose clamp (4) is correspondingly arranged in the fastening grooves (205).

5. The heterogeneous welding structure of a cavity pipe fitting according to claim 2, characterized in that: The contact plate (201) is provided with a pair of extension plates (203) in the middle and also includes a fastener (3). The fastener (3) includes a screw (301) disposed on the main tube (101). The contact plate (201) can move along the axial direction of the screw (301).

6. The heterogeneous welding structure of a cavity pipe fitting according to claim 5, characterized in that: A screw cap (302) is threaded onto the screw (301), and a sealing film (303) is provided at the bottom of the screw cap (302).

7. The heterogeneous welding structure of a cavity pipe fitting according to claim 1, characterized in that: Both ends of the insertion tube (102) are provided with chamfered surfaces (104).

Images