Welding flux circulating mechanism for ocean engineering steel pipe vertical joint submerged arc welding machine

Abstract

The utility model relates to the technical field of ocean engineering steel pipe submerged arc welding, and provides a welding flux circulating mechanism for an ocean engineering steel pipe vertical joint submerged arc welding machine, which comprises a rack arranged on the outer wall of a steel pipe. The rack is used for mounting a welding flux supporting table for bearing welding flux and a welding gun for welding; the material collecting box is arranged in a sliding mode relative to the rack, located below the flux supporting table and used for collecting the welding flux falling off from the flux supporting table; the medicine guide plate is hinged to the material receiving box and provided with an arc-shaped material receiving opening, and the arc-shaped material receiving opening abuts against the outer wall of the steel pipe; by means of the technical scheme, the problems that in the prior art, the universality of a flux supporting table is poor, and after the diameter of a steel pipe changes, a gap exists between the flux supporting table and the outer wall of the steel pipe, and consequently welding flux leaks downwards and is wasted are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ocean engineering steel pipe submerged arc welding technology, specifically, and relates to a welding flux circulating mechanism for an ocean engineering steel pipe vertical joint submerged arc welding machine. BACKGROUND

[0002] Ocean engineering steel pipes are steel pipes used in ocean engineering, which have the characteristics of large diameter, high strength, corrosion resistance, etc. Considering that submerged arc welding has the advantages of stable welding quality, high welding efficiency, no arc light, and less smoke, etc., it is generally selected to weld and connect multiple steel pipes by submerged arc welding.

[0003] During welding, the steel pipe needs to be continuously rotated, and the welding flux needs to be held by the flux holding table to ensure that there is enough welding flux at the welding position. The placement state of the steel pipe also varies, which can cause a large change in the structure of the flux holding table. The steel pipe is placed vertically for welding, which is referred to as vertical joint welding. During the operation, the welding equipment and the steel pipe move relatively, and some welding flux inevitably falls off the flux holding table, causing waste of welding flux. At the same time, the outer walls of steel pipes of different diameters have different shapes, and the flux holding table has poor universality, which can easily leave gaps between the outer wall of the steel pipe and the flux holding table, causing a large amount of welding flux to leak, resulting in poor welding effect or even welding failure, and a large amount of waste of welding flux, increasing the welding cost. Therefore, it is necessary to improve and optimize the existing technology. SUMMARY

[0004] The utility model provides a welding flux circulating mechanism for an ocean engineering steel pipe vertical joint submerged arc welding machine, which solves the problem of poor universality of the flux holding table in related technology. When the diameter of the steel pipe changes, there is a gap between the flux holding table and the outer wall of the steel pipe, causing the welding flux to leak and waste.

[0005] The technical solution of the utility model is as follows:

[0006] The welding flux circulating mechanism for the ocean engineering steel pipe vertical joint submerged arc welding machine comprises:

[0007] A rack is installed on the outer wall of the steel pipe. The rack is used to install a flux holding table that carries welding flux and a welding gun used for welding.

[0008] A material collecting box is slidably arranged relative to the rack and located below the flux holding table, and is used to collect the welding flux that falls off the flux holding table.

[0009] A flux guide plate is hinged to the material collecting box and has an arc-shaped material receiving port that is in contact with the outer wall of the steel pipe.

[0010] As a further technical solution, it further comprises:

[0011] The elastic member one has two ends respectively acting on the guide plate and the receiving box, and the arc-shaped receiving port is kept in contact with the outer wall of the steel pipe by the force provided by the elastic member one;

[0012] The elastic member five has two ends respectively acting on the frame and the receiving box, and the receiving box has a movement tendency of approaching the outer wall of the steel pipe by the force provided by the elastic member five.

[0013] As a further technical solution, it further comprises:

[0014] The screen is arranged at the upper end of the receiving box, and the screen has a plurality of holes.

[0015] As a further technical solution, it further comprises:

[0016] The return box is arranged on the frame and above the medicine supporting table, and the return box is used to supply the welding gun with welding flux.

[0017] As a further technical solution, it further comprises:

[0018] The feeding box is arranged on the frame and above the welding gun, and the feeding box has a transparent observation window, and the observation window has minimum and maximum scale lines on the side.

[0019] As a further technical solution, it further comprises a sealing unit, and the sealing unit comprises:

[0020] The adjusting plate one is arranged below the medicine supporting table and in sliding contact with the outer wall of the steel pipe.

[0021] The adjusting plate two is arranged between any two adjacent adjusting plate ones, and the adjusting plate two is hinged to the adjusting plate one and in contact with the outer wall of the steel pipe.

[0022] The adjusting arm is arranged in sliding and rotating contact with the medicine supporting table, and the adjusting plate one is hinged to the adjusting arm.

[0023] As a further technical solution, it further comprises:

[0024] The sliding seat is arranged in sliding contact with the medicine supporting table, and the adjusting arm is arranged in rotating contact with the sliding seat.

[0025] The elastic member two has two ends respectively acting on the medicine supporting table and the sliding seat, and the sliding seat has a tendency of sliding towards the outer wall of the steel pipe by the force provided by the elastic member two.

[0026] As a further technical solution, the adjusting arm comprises:

[0027] a first arm rotatably arranged on the sliding base;

[0028] a second arm slidably arranged relative to the first arm;

[0029] a third elastic member having two ends respectively acting on the first arm and the second arm;

[0030] a third arm hingedly arranged relative to the second arm, the third arm being hingedly connected with two adjacent adjusting plates, and one of the adjusting plates being hingedly connected with one of the third arms.

[0031] As a further technical solution, the adjusting arm further comprises:

[0032] a first hinge arranged between the second arm and the third arm, the second arm and the third arm being respectively hingedly connected with the first hinge;

[0033] a second hinge arranged between the third arm and the adjusting plate, the third arm and the adjusting plate being respectively hingedly connected with the second hinge.

[0034] As a further technical solution, the adjusting arm further comprises:

[0035] a fourth elastic member having two ends respectively acting on the third arm and the medicine supporting table.

[0036] The working principle and beneficial effects of the present application are as follows:

[0037] In the present application, the welding flux circulating mechanism comprises a rack, a material collecting box and a flux guide plate; wherein the rack is provided with a medicine supporting table and a welding gun; during operation, the rack is installed on the outer wall of a vertically placed steel pipe, the welding gun is located above the medicine supporting table, the welding gun is selected from the welding gun disclosed in the document with the authorization publication number CN220679645U, the medicine supporting table is exactly aligned with the lower end of the welding area, the welding flux is added to the medicine supporting table, so that the welding flux covers the welding area; the welding gun is started to perform welding; the flux guide plate is distributed at an angle with the axis of the steel pipe, the arc-shaped material receiving port is exactly aligned with the outer wall of the steel pipe, when the diameter of the steel pipe changes, an external force is applied to drive the material collecting box to slide, and the material collecting box is close to or away from the outer wall of the steel pipe, and at the same time, an external force is applied to rotate the flux guide plate, so that the arc-shaped material receiving port of the flux guide plate keeps in contact with the outer wall of the steel pipe; during the welding process, when the welding flux falls from the gap between the medicine supporting table and the outer wall of the steel pipe, the falling welding flux falls onto the flux guide plate, and under the flow guiding action of the flux guide plate, the welding flux rolls into the collecting box for collection; an air pump in the existing technology is started, and the welding flux collected in the collecting box is transported to the medicine supporting table by means of the negative pressure suction of the air pump, so that the welding flux is collected and reused, and the waste of welding flux is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0038] The above characteristics, technical features, advantages and implementation manners of the present application will be further described in a clear and easy-to-understand manner in combination with the preferred embodiments and the accompanying drawings.

[0039] Figure 1 It is a structure schematic diagram of the whole work (with a welding gun) of the present application;

[0040] Figure 2 It is a structure schematic diagram of the whole work (with a welding gun) of the present application; Figure 1 It is a local enlarged view of X in the middle;

[0041] Figure 3 It is a structure schematic diagram of the whole work (with a welding gun) of the present application;

[0042] Figure 4 It is a structure schematic diagram of the whole work (with a welding gun) of the present application; Figure 3 It is a local enlarged view of Y in the middle;

[0043] Figure 5 It is a structure schematic diagram of the whole work (with a welding gun) of the present application;

[0044] Figure 6 It is a structure schematic diagram of the whole work (with a welding gun) of the present application; Figure 5 It is a local enlarged view of Z in the middle;

[0045] In the drawing: 1, rack, 2, medicine supporting table, 3, welding gun, 4, material collecting box, 5, medicine guiding plate, 6, arc-shaped material receiving port, 7, elastic member one, 8, screen, 9, leakage hole, 10, material returning box, 11, material supplementing box, 12, observation window, 13, adjusting plate one, 14, adjusting plate two, 15, adjusting arm, 16, sliding seat, 17, elastic member two, 18, primary arm, 19, secondary arm, 20, elastic member three, 21, tertiary arm, 22, hinged member one, 23, hinged member two, 24, elastic member four, 25, elastic member five. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the specific implementation manners of the present application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other implementation manners can also be obtained.

[0047] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0048] In this paper, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0049] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] Embodiment one, refer to Figures 1-4 As the first embodiment of the utility model, a welding flux circulating mechanism for a vertical submerged arc welding machine of an offshore engineering steel pipe is proposed.

[0051] In this embodiment, the welding flux circulating mechanism comprises a rack 1, a material collecting box 4 and a flux guide plate 5; wherein the rack 1 is provided with a flux supporting table 2 and a welding torch 3; during operation, the rack 1 is installed on the outer wall of the vertically placed steel pipe, the welding torch 3 is located above the flux supporting table 2, the welding torch 3 is selected from the welding torch 3 disclosed in the document with the authorized publication number CN220679645U, the flux supporting table 2 is just opposite to the lower end of the welding area, the welding flux is added to the flux supporting table 2, so that the welding flux covers the welding area; the welding torch 3 is started to weld; the flux guide plate 5 is distributed at an angle with the axis of the steel pipe, the arc-shaped material receiving port 6 is just opposite to the outer wall of the steel pipe, when the diameter of the steel pipe changes, an external force is applied to drive the material collecting box 4 to slide, to approach or move away from the outer wall of the steel pipe, and at the same time, an external force is applied to rotate the flux guide plate 5, so that the arc-shaped material receiving port 6 of the flux guide plate 5 keeps in contact with the outer wall of the steel pipe; during welding, when the welding flux falls from the gap between the flux supporting table 2 and the outer wall of the steel pipe, the falling welding flux falls onto the flux guide plate 5, and under the flow guiding action of the flux guide plate 5, the welding flux rolls into the collecting box for collection; an external air pump in the prior art is started, and the welding flux collected in the collecting box is transported to the flux supporting table 2 by the negative pressure suction of the air pump, so as to realize the collection and reuse of the welding flux and reduce the waste of the welding flux.

[0052] Embodiment two, refer to Figures 1-4This is the second embodiment of the present invention. Based on the first embodiment, this embodiment further adds an elastic element 7 and an elastic element 25. Both elastic elements 7 and 25 can be springs from the prior art. The two ends of the elastic element 7 act on the guide plate 5 and the receiving box 4, respectively. The hinge point between the guide plate 5 and the receiving box 4 is point A, and the point of action between the elastic element 7 and the guide plate 5 is point B. Point A is located above point B. During operation, the elastic element 7 is in an extended state. With the force provided by the elastic element 7, the guide plate 5 tends to approach the outer wall of the steel pipe, keeping the guide plate 5 in contact with the outer wall of the steel pipe, improving the consistency and effectiveness of the working state of the guide plate 5, and avoiding the waste of welding flux falling from the welding platform 2. The elastic element 5 25 is in an extended state. With the force provided by the elastic element 5 25, the collection box always maintains a tendency to move close to the outer wall of the steel pipe, so as to avoid the distance between the collection box and the outer wall of the steel pipe being too large, which would cause the guide plate 5 to not fit tightly with the outer wall of the steel pipe and result in the leakage and waste of welding flux.

[0053] Example 3, referring to Figures 1-3 This is the third embodiment of the present invention. Based on the first embodiment, this embodiment further adds a screen 8. By screening through the screen 8, other impurities are prevented from entering the collection box, thereby improving the purity of the recovered welding flux and reducing the need for reprocessing after the welding flux is recovered.

[0054] Example 4, refer to Figures 1-4 This is the fourth embodiment of the present invention. Based on the first embodiment, this embodiment further adds a recovery box and a replenishment box 11. Both the recovery box and the replenishment box 11 are located above the welding torch 3. An external air pump transports the welding flux from the collection box to the recovery box. The outlet of the recovery box is connected to the inlet of the welding torch 3 through a first hose. The recovery box temporarily stores the welding flux. A certain amount of welding flux is pre-added to the replenishment box 11. The replenishment box 11 is connected to the inlet of the welding torch 3 through a second hose. The observation window 12 can be used to check in real time whether the welding flux in the replenishment box 11 is sufficient, avoiding the phenomenon of insufficient welding flux, which leads to welding failure. At the same time, the height difference between the recovery box, the replenishment box 11 and the welding torch 3 enables automatic replenishment of welding flux.

[0055] Example 5, refer to Figures 1-6 This is the fifth embodiment of the present invention. Based on the first embodiment, this embodiment further adds a sealing unit, a sliding seat 16, and an elastic element 2 17. The sealing unit includes an adjusting plate 13, an adjusting plate 2 14, and an adjusting arm 15, wherein the adjusting arm 15 specifically includes a primary arm 18, a secondary arm 19, an elastic element 3 20, a tertiary arm 21, a hinge 1 22, a hinge 2 23, and an elastic element 4 24.

[0056] In this embodiment, there is one primary arm 18, two secondary arms 19 and two elastic elements 20, and four tertiary arms 21. The elastic elements 20 are springs from the prior art. Preferably, there are two hinges 22 and four hinges 23. One hinge 23 is hinged to one tertiary arm 21, and one hinge 22 is hinged to one secondary arm 19. During operation, both adjusting plates 13 and 24 are in compressive contact with the outer wall of the steel pipe.

[0057] Two adjacent adjusting plates 13, one adjusting plate 14, one third-stage arm 21, and one hinge 23 form a small five-bar linkage structure; any two adjacent small five-bar linkage structures are hinged together by one adjusting plate 24; two small five-bar linkage structures, one adjusting plate 24, one second-stage arm 19, and one hinge 22 form a medium five-bar linkage structure; two adjacent medium five-bar linkage structures are hinged together by one adjusting plate 24. The point of action between the elastic element 3 20 and the second-stage arm 19 is point C, and the point of action between the elastic element 3 20 and the first-stage arm 18 is point D. The distance between point D and the outer wall of the steel pipe is less than the distance between point C and the outer wall of the steel pipe. When the elastic element 3 20 is working, it is in an extended state. With the force provided by the elastic element 3 20, the second-stage arm 19 always tends to move closer to the outer wall of the steel pipe, ensuring that the adjusting plates 13 and 24 are always in contact with the outer wall of the steel pipe. By utilizing the formed small five-bar linkage structure, medium five-bar linkage structure, and primary arm 18, a dynamic adjustment balance is achieved between the spaced-out adjusting plates 13 and 14. Even if protrusions or depressions appear on the outer wall of the steel pipe, the adjusting plates 13 and 14 can be quickly adjusted locally, avoiding gaps between them and reducing the waste of welding flux. This also expands the equipment's applicability and improves its versatility.

[0058] The elastic element 24 is preferably a spring in the prior art; the elastic element 24 is located above the adjusting plate 13, and the elastic element 24 passes through the through hole on the medicine support 2 and is connected to the adjusting plate 13; the diameter of the through hole is larger than the maximum outer diameter of the elastic element 24; the elastic element 24 can both expand and contract along the direction of passing through the through hole, and can also sway within the cross section of the through hole.

[0059] During operation, the elastic element 24 is in an extended state. The force provided by the elastic element 24 ensures that the adjusting plate 13 always tends to move closer to the flux support platform 2, thus guaranteeing the consistency of the position and height of the adjusting plate 13. This keeps the adjusting plate 13 and the flux support platform 2 in a constant state of compression contact, preventing gaps between them and avoiding waste of welding flux. The through hole expands the sliding direction range of the elastic element 24 and the adjusting plate 13, improving the flexibility and versatility of the sliding of the adjusting plate 13.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A flux circulation mechanism for a submerged arc welding machine for vertical jointing of steel pipes in marine engineering, characterized in that, include: A frame (1) is installed on the outer wall of a steel pipe; the frame (1) is used to install a flux support (2) for carrying welding flux and a welding torch (3) for welding. The receiving box (4) is slidably disposed relative to the frame (1) and located below the flux tray (2) for collecting the welding flux that falls from the flux tray (2); The guide plate (5) is hinged to the receiving box (4) and has an arc-shaped receiving port (6), which abuts against the outer wall of the steel pipe.

2. The flux circulation mechanism for a submerged arc welding machine for vertical jointing of marine engineering steel pipes according to claim 1, characterized in that, Also includes: The elastic element 1 (7) acts on the guide plate (5) and the receiving box (4) respectively at both ends. With the force provided by the elastic element 1 (7), the arc-shaped receiving port (6) is kept in contact with the outer wall of the steel pipe. The elastic element five (25) acts on the frame (1) and the receiving box (4) respectively at both ends. With the force provided by the elastic element five (25), the receiving box (4) maintains a tendency to move closer to the outer wall of the steel pipe.

3. The flux circulation mechanism for a submerged arc welding machine for vertical jointing of marine engineering steel pipes according to claim 1, characterized in that, Also includes: A screen (8) is set at the upper end of the receiving box (4), and the screen (8) has a plurality of holes (9).

4. The flux circulation mechanism for a submerged arc welding machine for vertical jointing of marine engineering steel pipes according to claim 1, characterized in that, Also includes: The return material box (10) is set on the frame (1) and located above the flux tray (2). The return material box (10) is used to replenish the welding flux for welding the welding gun (3).

5. The flux circulation mechanism for a submerged arc welding machine for vertical jointing of marine engineering steel pipes according to claim 4, characterized in that, Also includes: The feed box (11) is set on the frame (1) and located above the welding gun (3). The feed box (11) has a transparent observation window (12) with minimum quantity scale line and maximum quantity scale line engraved on the side of the observation window (12).

6. The flux circulation mechanism for a submerged arc welding machine for vertical jointing of marine engineering steel pipes according to claim 1, characterized in that, It also includes a sealing unit, the sealing unit comprising: Adjustment plate one (13) is slidably arranged relative to the medicine support platform (2) and located below the medicine support platform (2). Adjustment plate one (13) abuts against the outer wall of the steel pipe. Adjusting plate two (14): An adjusting plate two (14) is provided between any two adjacent adjusting plates one (13). The adjusting plate two (14) is hinged to the adjusting plate one (13). The adjusting plate two (14) abuts against the outer wall of the steel pipe. The adjusting arm (15) is slidably and rotatably arranged relative to the medicine tray (2), and the adjusting plate (13) is hinged to the adjusting arm (15).

7. The flux circulation mechanism for a submerged arc welding machine for vertical jointing of marine engineering steel pipes according to claim 6, characterized in that, Also includes: A sliding seat (16) is slidably disposed on the medicine tray (2), and an adjusting arm (15) is rotatably disposed on the sliding seat (16); The second elastic element (17) acts on the medicine support platform (2) and the sliding seat (16) respectively at both ends. With the force provided by the second elastic element (17), the sliding seat (16) tends to slide towards the outer wall of the steel pipe.

8. The flux circulation mechanism for a submerged arc welding machine for vertical jointing of marine engineering steel pipes according to claim 7, characterized in that, The adjusting arm (15) includes: The primary arm (18) is rotatably mounted on the sliding seat (16); The secondary arm (19) is slidably disposed relative to the primary arm (18); The elastic element three (20) acts on the first-stage arm (18) and the second-stage arm (19) at its two ends respectively; The third arm (21) is hinged relative to the second arm (19), and the third arm (21) is simultaneously hinged to two adjacent adjustment plates (13), and one adjustment plate (13) is hinged to one third arm (21).

9. The flux circulation mechanism for a submerged arc welding machine for vertical jointing of marine engineering steel pipes according to claim 8, characterized in that, The adjusting arm (15) also includes: Hinge 1 (22) is disposed between the secondary arm (19) and the tertiary arm (21), and the secondary arm (19) and the tertiary arm (21) are respectively hinged to hinge 1 (22); Hinged component two (23) is disposed between the third-stage arm (21) and the first adjustment plate (13), and the third-stage arm (21) and the first adjustment plate (13) are respectively hinged to the hinged component two (23).

10. The flux circulation mechanism for a submerged arc welding machine for vertical jointing of marine engineering steel pipes according to claim 9, characterized in that, The adjusting arm (15) also includes: The elastic element four (24) acts on the three-stage arm (21) and the drug support platform (2) at its two ends respectively.

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