Small-pipe-diameter internal welding submerged-arc welding device

Abstract

The utility model relates to the technical field of small-pipe-diameter material welding, and discloses a small-pipe-diameter inner welding submerged-arc welding device which comprises an operation table, a supporting column is fixedly connected to the bottom end of the operation table, a welding chamber is fixedly connected to one end of the top of the operation table, and fixing threaded rods are symmetrically arranged at the top of the operation table. The outer side of the surface of the fixed threaded rod is movably sleeved with a movable mounting bottom plate, the outer side of the surface of the fixed threaded rod is in threaded connection with a fastening nut, and a first electric telescopic rod is arranged at the top of the movable mounting bottom plate. According to the pipe welding device, the first electric telescopic rod, the connecting and mounting frame, the driving mechanism and the connecting and pressing mechanism are matched with one another, so that the height of a pipe can be adjusted, and in the welding process, the pipe can be conveyed through the matching of the driving mechanism and the connecting and pressing mechanism, so that the welding efficiency is improved. And the pipe can move towards the inner side of the welding chamber, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of small-diameter material welding, and more specifically relates to an internal submerged arc welding device for small-diameter pipes. Background Art

[0002] Submerged arc welding (including submerged arc surfacing, electroslag surfacing, etc.) is a welding method in which the arc burns under a layer of flux. Its inherent advantages such as stable welding quality, high welding productivity, no arc light, and very little smoke and dust make it the main welding method in the fabrication of important steel structures such as pressure vessels, pipe sections, and box-shaped beam columns.

[0003] When the existing welding device welds small-diameter materials, the welding arm is usually moved. However, when the welding arm is moved, the welding end is prone to instability. At this time, the pipe should be moved, but the mechanism for clamping and fixing the pipe cannot move the pipe. For this reason, we propose an internal submerged arc welding device for small-diameter pipes. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides an internal submerged arc welding device for small-diameter pipes to solve the problems existing in the above-mentioned background art.

[0005] The utility model provides the following technical solution: an internal submerged arc welding device for small-diameter pipes, including an operating table. A support column is fixedly connected to the bottom end of the operating table. A welding chamber is fixedly connected to one end of the top of the operating table. Fixed threaded rods are symmetrically arranged on the top of the operating table. An active mounting base plate is movably sleeved on the outer surface of the fixed threaded rods. A fastening nut is threadedly connected to the outer surface of the fixed threaded rods. A first electric telescopic rod is arranged on the top of the active mounting base plate. A connecting mounting frame is fixedly connected to the top of the first electric telescopic rod. A fixed through hole is opened inside the connecting mounting frame. A pipe is placed inside the fixed through hole. Driving mechanisms are arranged on the upper parts of both ends of the connecting mounting frame. A connecting pressing mechanism is fixedly connected to the top of the connecting mounting frame. A first fastening mechanism is fixedly connected to the lower part of one end of the connecting mounting frame. A second fastening mechanism is fixedly connected to the lower part of the other end of the connecting mounting frame.

[0006] Further, the driving mechanism includes fixed guide rails symmetrically located on both sides of the connecting mounting frame. A moving mounting plate is movably connected to the inside of the fixed guide rails. A servo motor is fixedly connected to the surface of one of the moving mounting plates. A connecting rotating rod is fixedly connected to the output end of the servo motor. A conveying roller is fixedly sleeved on the outer surface of the connecting rotating rod.

[0007] Further, a T-shaped guide groove is provided on the inner side of the fixed guide rail, and both ends of the movable mounting plate are slidably fitted with the inner side of the fixed guide rail.

[0008] Further, the connecting and pressing mechanism includes a fixed mounting frame, and force springs are symmetrically arranged at the top inside the fixed mounting frame. The bottom of the force spring is fixedly connected with a connecting mounting bottom plate.

[0009] Further, a fixed connection is provided between one end of the bottom of the connecting mounting bottom plate and the top of the movable mounting plate.

[0010] Further, the first fastening mechanism includes a first mounting block, a second electric telescopic rod is fixedly connected to one side of the first mounting block, and a connecting extrusion sleeve block is fixedly connected to the output end of the second electric telescopic rod.

[0011] Further, the second fastening mechanism includes a second mounting block, a third electric telescopic rod is fixedly connected to the surface of the second mounting block, a connecting extrusion block is fixedly connected to the output end of the third electric telescopic rod, and the outer side of the surface of the connecting extrusion block is slidably fitted with the inner side of the connecting extrusion sleeve block.

[0012] Technical effects and advantages of the present utility model:

[0013] 1. Through the mutual cooperation among the first electric telescopic rod, the connecting mounting frame, the driving mechanism and the connecting and pressing mechanism provided in the present utility model, the height of the pipe can be adjusted. And during the welding process, through the mutual cooperation between the driving mechanism and the connecting and pressing mechanism, the pipe can be conveyed, so that the pipe can move towards the inside of the welding chamber, and the operation is convenient.

[0014] 2. Through the first fastening mechanism and the second fastening mechanism provided in the present utility model, when the pipe is located inside the fixed through hole, under the action of the first fastening mechanism and the second fastening mechanism and in cooperation with the connecting mounting frame, the pipe can be restricted and fixed, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the fixed through hole of the present utility model.

[0017] Figure 3 It is a schematic diagram of the structure of the connecting mounting frame of the present utility model.

[0018] Figure 4 It is a schematic diagram of the driving mechanism and the connecting and pressing mechanism of the present utility model.

[0019] Figure 5 Schematic structural diagram of the first fastening mechanism and the second fastening mechanism of the present utility model.

[0020] The reference numerals are: 1, operating table; 2, support column; 3, welding chamber; 4, fixed threaded rod; 5, movable mounting base plate; 6, fastening nut; 7, first electric telescopic rod; 8, connecting mounting frame; 9, pipe; 10, driving mechanism; 11, fixed through hole; 12, connecting pressing mechanism; 13, first fastening mechanism; 14, second fastening mechanism; 15, fixed guide rail; 16, movable mounting plate; 17, servo motor; 18, connecting rotating rod; 19, conveying roller; 20, fixed mounting frame; 21, stress spring; 22, connecting mounting base plate; 23, first mounting block; 24, second electric telescopic rod; 25, connecting extrusion sleeve block; 26, second mounting block; 27, third electric telescopic rod; 28, connecting extrusion block. Specific embodiments

[0021] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the drawings in the present utility model. In addition, the forms of the various structures described in the following embodiments are merely examples, and the present utility model is not limited to the various structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0022] Referring to Figures 1-5 , the present utility model provides a submerged arc welding device for internal welding of small-diameter pipes, including an operating table 1. A support column 2 is fixedly connected to the bottom end of the operating table 1. A welding chamber 3 is fixedly connected to one end of the top of the operating table 1. Fixed threaded rods 4 are symmetrically arranged on the top of the operating table 1. A movable mounting base plate 5 is movably sleeved on the outer surface of the fixed threaded rod 4. A fastening nut 6 is threadedly connected to the outer surface of the fixed threaded rod 4. A first electric telescopic rod 7 is arranged on the top of the movable mounting base plate 5. The top of the first electric telescopic rod 7 is fixedly connected to a connecting mounting frame 8. A fixed through hole 11 is formed inside the connecting mounting frame 8. A pipe 9 is placed inside the fixed through hole 11. Driving mechanisms 10 are arranged on the upper parts of both ends of the connecting mounting frame 8. A connecting pressing mechanism 12 is fixedly connected to the top of the connecting mounting frame 8. A first fastening mechanism 13 is fixedly connected to the lower part of one end of the connecting mounting frame 8. A second fastening mechanism 14 is fixedly connected to the lower part of the other end of the connecting mounting frame 8;

[0023] Among them, the driving mechanism 10 includes fixed guide rails 15 symmetrically located on both sides of the connecting mounting frame 8, and the inner side of the fixed guide rails 15 is movably connected to a movable mounting plate 16, and the surface of one of the movable mounting plates 16 is fixedly connected to a servo motor 17, and the output end of the servo motor 17 is fixedly connected to a connecting rotating rod 18, and the outer side of the surface of the connecting rotating rod 18 is fixedly sleeved with a conveying roller 19.

[0024] Among them, a T-shaped guide groove is opened on the inner side of the fixed guide rail 15, and the two ends of the movable mounting plate 16 slide and fit with the inner side of the fixed guide rail 15, so that the movable mounting plate 16 can move on the inner side of the fixed guide rail 15, driving the servo motor 17, the connecting rotating rod 18 and the conveying roller 19 to move, which is easy to operate.

[0025] Among them, the connecting pressing mechanism 12 includes a fixed mounting frame 20, and a force spring 21 is symmetrically provided on the inner top of the fixed mounting frame 20. The bottom of the force spring 21 is fixedly connected to a connecting mounting base plate 22, so that the movable mounting plate 16 can cooperate with the fixed mounting frame 20 when moving upward, causing compression to the force spring 21. Under the action of the force spring 21, the connecting mounting base plate 22, the movable mounting plate 16, the servo motor 17, the connecting rotating rod 18 and the conveying roller 19 have a tendency to move downward, so that the outer surface of the conveying roller 19 and the outer surface of the pipe 9 are always in contact with each other.

[0026] Among them, one end of the bottom of the connecting mounting base 22 and the top of the movable mounting plate 16 are fixedly connected to each other, so that the movable mounting plate 16 and the connecting mounting base 22 can be stably transmitted and the operation is convenient.

[0027] Among them, the first fastening mechanism 13 includes a first mounting block 23, one side of the first mounting block 23 is fixedly connected to the second electric telescopic rod 24, and the output end of the second electric telescopic rod 24 is fixedly connected to the connecting extrusion sleeve block 25, so that the second electric telescopic rod 24 can push the connecting extrusion sleeve block 25, so that the end inclined surface of the connecting extrusion sleeve block 25 can push the pipe 9 and cooperate with the inner side of the connecting mounting frame 8 to clamp and fix the pipe 9.

[0028] Among them, the second fastening mechanism 14 includes a second mounting block 26, the surface of the second mounting block 26 is fixedly connected to the third electric telescopic rod 27, the output end of the third electric telescopic rod 27 is fixedly connected to the connecting extrusion block 28, the outer surface of the connecting extrusion block 28 and the inner side of the connecting extrusion sleeve block 25 are slidably fitted with each other, so that the third electric telescopic rod 27 can push the connecting extrusion block 28, so that the end inclined surface of the connecting extrusion block 28 can push the pipe 9, cooperate with the inner side of the connecting mounting frame 8, and clamp and fix the pipe 9.

[0029] Working principle of the utility model: During use, the pipe 9 is inserted into the inside of the fixed through hole 11. Then, the second electric telescopic rod 24 can push the connecting extrusion sleeve block 25, so that the end inclined surface of the connecting extrusion sleeve block 25 can push the pipe 9, cooperate with the inside of the connecting installation frame 8, and clamp and fix the pipe 9. At the same time, the third electric telescopic rod 27 can push the connecting extrusion block 28, so that the end inclined surface of the connecting extrusion block 28 can push the pipe 9, cooperate with the inside of the connecting installation frame 8, and clamp and fix the pipe 9. During this process, the pipe 9 will move upward, push the conveying roller 19, and the conveying roller 19 can drive the connecting rotating rod 18, the moving installation plate 16, the servo motor 17 and the connecting installation bottom plate 22 to move upward, compress the stress spring 21, and the stress spring 21 can continuously provide a downward pressure on the connecting installation bottom plate 22, the moving installation plate 16, the servo motor 17, the connecting rotating rod 18 and the conveying roller 19, so that the conveying roller 19 and the pipe 9 are in mutual contact. Then, the first electric telescopic rod 7 can adjust the height of the first electric telescopic rod 7 and the pipe 9. When welding, the servo motor 17 can drive the connecting rotating rod 18 and the conveying roller 19, so that the pipe 9 can stably move into the inside of the welding chamber 3, and thus stable welding can be carried out, and the operation is convenient.

[0030] Finally, the following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, and can also be the communication inside two components. It can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change;

[0031] Secondly: In the attached drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the usual designs. Without conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0032] Finally: The above description is only the preferred embodiment of the utility model and is not used to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An internal submerged arc welding device for small-diameter pipes, comprising an operation table (1), characterized in that: The bottom end of the operating table (1) is fixedly connected with a support column (2). One end of the top of the operating table (1) is fixedly connected with a welding chamber (3). The top of the operating table (1) is symmetrically provided with fixed threaded rods (4). The outer surface of the fixed threaded rods (4) is movably sleeved with a movable mounting base plate (5). The outer surface of the fixed threaded rods (4) is threadedly connected with fastening nuts (6). The top of the movable mounting base plate (5) is provided with a first electric telescopic rod (7). The top of the first electric telescopic rod (7) is fixedly connected with a connecting mounting frame (8). A fixed through hole (11) is formed inside the connecting mounting frame (8). A pipe (9) is placed inside the fixed through hole (11). Driving mechanisms (10) are arranged on the upper parts of both ends of the connecting mounting frame (8). The top of the connecting mounting frame (8) is fixedly connected with a connecting pressing mechanism (12). The lower part of one end of the connecting mounting frame (8) is fixedly connected with a first fastening mechanism (13). The lower part of the other end of the connecting mounting frame (8) is fixedly connected with a second fastening mechanism (14).

2. The submerged arc welding device for internal welding in small-diameter pipes according to claim 1, characterized in that: The driving mechanism (10) includes fixed guide rails (15) symmetrically located on both sides of the connecting mounting frame (8). A movable mounting plate (16) is movably connected inside the fixed guide rails (15). A servo motor (17) is fixedly connected to the surface of one of the movable mounting plates (16). The output end of the servo motor (17) is fixedly connected with a connecting rotating rod (18). A conveying roller (19) is fixedly sleeved on the outer surface of the connecting rotating rod (18).

3. The submerged arc welding device for internal welding of small-diameter pipes according to claim 2, wherein: T-shaped guide grooves are formed inside the fixed guide rails (15). The two ends of the movable mounting plate (16) are slidably attached to the inner sides of the fixed guide rails (15).

4. A submerged arc welding device for internal welding of small-diameter pipes according to claim 1, characterized in that: The connecting pressing mechanism (12) includes a fixed mounting frame (20). Stress springs (21) are symmetrically arranged at the top inside the fixed mounting frame (20). The bottom of the stress springs (21) is fixedly connected with a connecting mounting base plate (22).

5. The submerged arc welding device for internal welding of small-diameter pipes according to claim 4, wherein: The bottom end of the connecting mounting base plate (22) is fixedly connected to the top of the movable mounting plate (16).

6. The submerged arc welding device for internal welding in small-diameter pipes according to claim 1, characterized in that: The first fastening mechanism (13) includes a first mounting block (23). A second electric telescopic rod (24) is fixedly connected to one side of the first mounting block (23). The output end of the second electric telescopic rod (24) is fixedly connected with a connecting extrusion sleeve block (25).

7. The submerged arc welding device for internal welding of small-diameter pipes according to claim 1, characterized in that: The second fastening mechanism (14) includes a second mounting block (26). A third electric telescopic rod (27) is fixedly connected to the surface of the second mounting block (26). The output end of the third electric telescopic rod (27) is fixedly connected with a connecting extrusion block (28). The outer surface of the connecting extrusion block (28) is slidably attached to the inner side of the connecting extrusion sleeve block (25).

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