Assembly welding device

Abstract

The utility model discloses an assembling and welding device, which belongs to the technical field of pipe fitting welding and comprises two clamping jaws with a certain distance, and the two clamping jaws are connected through a connecting rod. The two clamping jaws are detachably connected with the two pipe fittings to be welded respectively, each clamping jaw comprises a fixed clamping jaw and a movable clamping jaw, the pipe fittings can be clamped between the fixed clamping jaws and the movable clamping jaws, and the positions of the movable clamping jaws can be adjusted relative to the positions of the fixed clamping jaws. Relative fixation of the positions of the two pipe fittings is achieved, so that welding and later lossless dismounting are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fitting welding, and particularly relates to a group welding device. Background Art

[0002] During the process of pipe assembly welding, a connecting plate is required. The connecting plate is obtained by cutting a plate, and the specifications are, for example, 50mm * 20mm * T6mm. When two pipes are assembled and welded, at least 3 connecting plates are required at each interface for temporary reinforcement, aiming to avoid the movement and deformation during the pipe welding process.

[0003] When the number of pipe assemblies is large, a large number of connecting plates are required. First, the addition and removal of the connecting plates require manual work and need to be carried out by two people in cooperation. That is, one person needs to first assemble and weld two pipes to the qualified size according to the drawing requirements, and the other person needs to perform temporary reinforcement welding on the qualified pipes, which is very labor-consuming. Second, during the removal of the connecting plates, defects are easily left at the spot welding positions of the connecting plates, such as tungsten inclusions. In addition, after the welds of the pipes need to be subjected to RT flaw detection, the tungsten inclusions left by removing the connecting plates are very likely to show flaw detection defects and be judged as unqualified, requiring repair operations. Problems such as the addition, removal, and defects of the connecting plates not only make the operation cumbersome and affect work efficiency, but also occupy unnecessary labor force.

[0004] In view of the above problems, the utility model designs and manufactures a group welding device to overcome the above defects. Content of the Utility Model

[0005] For the problems existing in the prior art, a group welding device provided by the utility model realizes the relative fixation of the positions of two pipe fittings by detachably connecting two connected chucks to the two pipe fittings to be welded respectively, so as to facilitate welding and subsequent non-destructive disassembly.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a group welding device includes two chucks with a certain distance therebetween, and the two chucks are connected by a connecting rod;

[0007] Both of the two chucks include a fixed chuck and a movable chuck, and a pipe fitting can be clamped between the fixed chuck and the movable chuck, and the position of the movable chuck can be adjusted relative to the position of the fixed chuck.

[0008] Preferably, a connecting portion is provided at one end of both the fixed chuck and the movable chuck, and the connecting portion of the fixed chuck and the connecting portion of the movable chuck are rotatably connected by a rotating shaft, and the rotating shaft is parallel to the pipe fitting to be clamped;

[0009] Locking portions are provided at the other ends of both the fixed chuck and the movable chuck, and the locking portion of the fixed chuck and the locking portion of the movable chuck are fixedly connected by bolts.

[0010] Preferably, an arc portion is provided between the connecting portion and the locking portion, and the shape and size of the inner wall of the arc portion match those of the pipe fitting.

[0011] Or, an elastic gasket is provided on the inner wall of the arc portion.

[0012] Preferably, the connecting rod is arranged between the rotating shafts of the two claws, and the rotating shafts of the two claws are integrally provided with the connecting rod.

[0013] Preferably, the connecting portions of the two movable claws are arranged between the connecting portions of the two fixed claws.

[0014] Preferably, the rotating shaft is fixed on the connecting portion of the fixed claw, a connecting hole is provided on the connecting portion of the movable claw, and the rotating shaft on the connecting portion of the fixed claw is inserted into the connecting hole of the connecting portion of the movable claw.

[0015] Preferably, an external thread is provided at one end of the rotating shaft away from the connecting rod, and the connecting portion of the fixed claw is screwed onto the external thread;

[0016] One end of the rotating shaft close to the connecting rod is rotatably connected to the connecting portion of the movable claw;

[0017] A nut is screwed onto one end of the rotating shaft away from the connecting rod, and the nut can limit the connecting portion of the fixed claw from disengaging from the rotating shaft.

[0018] Preferably, external threads with opposite helix directions are provided at one ends of the rotating shafts of the two claws close to the connecting rod, threaded holes are provided at both ends of the connecting rod, and both ends of the connecting rod are screwed to the rotating shafts through the threaded holes. When the connecting rod is rotated, the distance between the two claws can be adjusted.

[0019] Preferably, the distance between the connecting rod and the pipe fitting to be clamped is not less than 15 mm.

[0020] Preferably, an elastic member is provided between the connecting portion of the movable claw and the connecting portion of the fixed claw, and the elastic member makes the locking portion of the movable claw tend to move away from the locking portion of the fixed claw.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. This utility model uses two claws connected in the axial direction of the pipe fitting to respectively clamp two pipe fittings, realizing the position fixation of the two pipe fittings, ensuring the stability of welding, and with the help of the detachable structure of the claws, it is not only convenient for the claws to clamp the pipe fittings, but also convenient for the claws to be disassembled from the pipe fittings, without causing damage to the pipe fittings, and can be reused, saving costs.

[0023] 2. The structure of the utility model is simple and the operation is easy. It only requires one person to operate, saving labor and reducing the consumption of labor force.

[0024] 3. The connecting rod connecting the two jaws is arranged between the rotating shafts of the two jaws. This not only does not affect the independent adjustment of the movable jaw and the fixed jaw on each jaw, but also enables the connecting rod to be far away from the pipe fitting, ensuring the welding space in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a group welding device;

[0026] Figure 2 It is an exploded view of a group welding device;

[0027] Figure 3 It is a diagram of the use state of a group welding device;

[0028] Figure 4 It is a schematic diagram of the fixed jaw of the utility model;

[0029] Figure 5 It is a schematic diagram of the movable jaw of the second embodiment of the utility model on the connecting rod and the rotating shaft;

[0030] Figure 6 It is a schematic diagram of the integral connecting rod and rotating shaft of the second embodiment of the utility model;

[0031] Figure 7 It is a schematic diagram of the third embodiment of the utility model;

[0032] Figure 8 It is a schematic diagram of the cooperation of the connecting rod and the rotating shaft of the third embodiment of the utility model;

[0033] Figure 9 It is a schematic diagram of the fourth embodiment of the utility model.

[0034] In the figure: 1 - fixed jaw, 2 - movable jaw, 3 - connecting rod, 4 - bolt, 5 - rotating shaft, 6 - elastic member, 11 - locking portion, 12 - connecting portion, 13 - arc portion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] For the convenience of those skilled in the art to understand, the following further describes the utility model with reference to the accompanying drawings.

[0036] As Figures 1 to 9 shown, a group welding device includes two jaws with a certain distance therebetween, and the two jaws are connected by a connecting rod 3; both of the two jaws include a fixed jaw 1 and a movable jaw 2, a pipe fitting can be clamped between the fixed jaw 1 and the movable jaw 2, and the position of the movable jaw 2 can be adjusted relative to the position of the fixed jaw 1.

[0037] The utility model uses two clamping jaws to clamp two pipe fittings respectively, realizing the position fixation of the two pipe fittings and ensuring the stability during the welding of the two pipe fittings.

[0038] Further, connecting portions 12 are provided at one ends of the fixed clamping jaw 1 and the movable clamping jaw 2. The connecting portion 12 of the fixed clamping jaw 1 and the connecting portion 12 of the movable clamping jaw 2 are rotationally connected through a rotating shaft 5. The rotating shaft 5 is parallel to the pipe fitting to be clamped. The fixed clamping jaw 1 and the movable clamping jaw 2 can be opened through the rotating shaft 5. Locking portions 11 are provided at the other ends of the fixed clamping jaw 1 and the movable clamping jaw 2. The locking portion 11 of the fixed clamping jaw 1 and the locking portion 11 of the movable clamping jaw 2 are fixedly connected through a bolt 4.

[0039] By means of the above structure, it is not only convenient for the clamping jaws to clamp the pipe fittings, but also convenient for the clamping jaws to be disassembled from the pipe fittings, without causing damage to the pipe fittings, and can be reused, saving costs.

[0040] Specifically, an arc portion 13 is provided between the connecting portion 12 and the locking portion 11, which can clamp a round pipe. The shape and size of the inner wall of the arc portion 13 match the pipe fitting. An elastic gasket is preferably provided on the inner wall of the arc portion 13 to better fix the pipe fitting. The thickness of half of the arc portion 13 is greater than the thickness of the connecting portion 12. After the connecting portion 12 of the fixed clamping jaw 1 and the connecting portion 12 of the movable clamping jaw 2 are matched through the rotating shaft 5, the arc portion 13 of the fixed clamping jaw 1 and the arc portion 13 of the movable clamping jaw 2 can be located on the same radial circumferential surface.

[0041] The connecting rod 3 is arranged between the rotating shafts 5 of the two clamping jaws, and the connecting rod 3 is preferably columnar. This structure not only does not affect the independent adjustment of the movable clamping jaw 2 and the fixed clamping jaw 1 on each clamping jaw, but also the connecting rod 3 can be far away from the pipe fitting. Specifically, the distance between the connecting rod 3 and the pipe fitting to be clamped is not less than 15 mm, ensuring the later welding space.

[0042] Embodiment 1:

[0043] The rotating shaft 5 is fixed on the connecting portion 12 of the fixed clamping jaw 1. Specifically, the rotating shaft 5 can be welded on the connecting portion 12 of the fixed clamping jaw 1. A connecting hole is provided on the connecting portion 12 of the movable clamping jaw 2. The rotating shaft 5 on the connecting portion 12 of the fixed clamping jaw 1 is inserted into the connecting hole of the connecting portion 12 of the movable clamping jaw 2. The rotating shafts 5 of the two clamping jaws are integrally provided with the connecting rod 3. Specifically, the two rotating shafts 5 and the connecting rod 3 can be directly integrally formed by one rod, or the two rotating shafts 5 can be respectively integrally welded with the connecting rod 3. The connecting portions 12 of the two movable clamping jaws 2 are arranged between the connecting portions 12 of the two fixed clamping jaws 1 to prevent the movable clamping jaw 2 from disengaging from the rotating shaft 5.

[0044] Embodiment 2:

[0045] Such as Figure 5 、 Figure 6As shown, an external thread is provided at one end of the rotating shaft 5 far from the connecting rod 3. The rotating shafts 5 of the two clamping claws are still integrally provided with the connecting rod 3. The connecting portion 12 of the fixed clamping claw 1 is screwed onto the external thread. One end of the rotating shaft 5 close to the connecting rod 3 is rotatably connected to the connecting portion 12 of the movable clamping claw 2;

[0046] Preferably, a nut is screwed onto one end of the rotating shaft 5 far from the connecting rod 3, and the nut can limit the connecting portion 12 of the fixed clamping claw 1 from detaching from the rotating shaft 5.

[0047] Embodiment Three:

[0048] As Figure 7 、 Figure 8 shown, external threads with opposite helix directions are provided at one end of the rotating shafts 5 of the two clamping claws close to the connecting rod 3. Threaded holes are provided at both ends of the connecting rod 3, and both ends of the connecting rod 3 are screwed to the rotating shafts 5 through the threaded holes. When the connecting rod 3 is rotated, the distance between the two clamping claws can be adjusted.

[0049] Embodiment Four:

[0050] As Figure 9 shown, an elastic member 6 is provided between the connecting portion 12 of the movable clamping claw 2 and the connecting portion 12 of the fixed clamping claw 1. The elastic member 6 causes the locking portion 11 of the movable clamping claw 2 to tend to move away from the locking portion 11 of the fixed clamping claw 1. Preferably, both ends of the elastic member 6 are respectively connected to the connecting portion 12 of the movable clamping claw 2 and the connecting portion 12 of the fixed clamping claw 1. The elastic member 6 is preferably a compression spring. Spring positioning grooves are provided on the connecting portion 12 of the movable clamping claw 2 or the connecting portion 12 of the fixed clamping claw 1, and the compression spring can be restricted in the spring positioning grooves to ensure the stability of the position of the compression spring.

[0051] Specific operation steps of Embodiment One of the present utility model:

[0052] During use, the movable clamping claw 2 rotates around the rotating shaft 5 to open the clamping claws, and the two clamping claws of the group welding device are respectively placed corresponding to the two butting pipe orifices;

[0053] The movable clamping claw 2 rotates around the rotating shaft 5 again, so that the locking portions 11 of the fixed clamping claw 1 and the movable clamping claw 2 are in contact with each other. The fixed clamping claw 1 and the movable clamping claw 2 are fastened using the bolt 4, thereby fixing the group welding device on the pipe fitting, and also fixing the two pipe fittings in the two clamping claws, facilitating subsequent group welding;

[0054] After welding, the bolt 4 on the locking portions 11 of the fixed clamping claw 1 and the movable clamping claw 2 can be removed, and then the two clamping claws can be detached from the pipe fitting.

[0055] It should be understood that the use of these embodiments is only for illustrating the present utility model rather than intending to limit the protection scope of the present utility model. In addition, it should also be understood that after reading the technical content of the present utility model, those skilled in the art can make various changes, modifications and / or variations to the present utility model, and all these equivalent forms also fall within the protection scope defined by the appended claims of this application.

Claims

1. A welding assembly device, characterized in that, It includes two jaws with a certain spacing, and the two jaws are connected by a connecting rod (3); Both of the two jaws include a fixed jaw (1) and a movable jaw (2). A pipe fitting can be clamped between the fixed jaw (1) and the movable jaw (2), and the position of the movable jaw (2) can be adjusted relative to the position of the fixed jaw (1).

2. The welding assembly device according to claim 1, characterized in that, Both ends of the fixed jaw (1) and the movable jaw (2) are provided with connecting parts (12). The connecting part (12) of the fixed jaw (1) and the connecting part (12) of the movable jaw (2) are rotatably connected by a rotating shaft (5), and the rotating shaft (5) is parallel to the pipe fitting to be clamped; Both ends of the fixed jaw (1) and the movable jaw (2) are provided with locking parts (11). The locking part (11) of the fixed jaw (1) and the locking part (11) of the movable jaw (2) are fixedly connected by a bolt (4).

3. The welding assembly device according to claim 2, wherein, An arc part (13) is arranged between the connecting part (12) and the locking part (11). The shape and size of the inner wall of the arc part (13) match those of the pipe fitting.

4. The welding assembly device according to claim 3, wherein, An elastic gasket is arranged on the inner wall of the arc part (13).

5. A welding assembly device according to claim 2, characterized in that, The connecting rod (3) is arranged between the rotating shafts (5) of the two jaws, and the rotating shafts (5) of the two jaws are integrally arranged with the connecting rod (3).

6. The group welding device according to claim 5, characterized in that The connecting parts (12) of the two movable jaws (2) are arranged between the connecting parts (12) of the two fixed jaws (1).

7. The welding assembly device according to claim 6, characterized in that, The rotating shaft (5) is fixed on the connecting part (12) of the fixed jaw (1). A connecting hole is arranged on the connecting part (12) of the movable jaw (2), and the rotating shaft (5) on the connecting part (12) of the fixed jaw (1) is inserted into the connecting hole of the connecting part (12) of the movable jaw (2).

8. The group welding device according to claim 6, characterized in that An external thread is arranged at one end of the rotating shaft (5) far from the connecting rod (3), and the connecting part (12) of the fixed jaw (1) is screwed on the external thread; One end of the rotating shaft (5) close to the connecting rod (3) is rotatably connected with the connecting part (12) of the movable jaw (2); A nut is screwed on one end of the rotating shaft (5) far from the connecting rod (3), and the nut can limit the connecting part (12) of the fixed jaw (1) from disengaging from the rotating shaft (5).

9. The welding assembly device according to claim 2, characterized in that, External threads with opposite helix directions are arranged at one ends of the rotating shafts (5) of the two jaws close to the connecting rod (3). Threaded holes are arranged at both ends of the connecting rod (3), and both ends of the connecting rod (3) are screwed with the rotating shafts (5) through the threaded holes. When the connecting rod (3) is rotated, the distance between the two jaws can be adjusted.

10. The assembly welding device according to claim 2, characterized in that, An elastic member (6) is arranged between the connecting part (12) of the movable jaw (2) and the connecting part (12) of the fixed jaw (1), and the elastic member (6) makes the locking part (11) of the movable jaw (2) tend to be away from the locking part (11) of the fixed jaw (1).

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