Welding flux leakage-proof device for submerged-arc welding

Abstract

The utility model provides a welding flux leakproof device for submerged-arc welding, which is arranged at a welding seam between two cylinders to be coaxially butted, and comprises a frame and a leakproof box, the frame is erected on the welding seam and does circular motion along the welding seam, and the leakproof box is arranged on the frame; the leakage-proof box comprises side intercepting pieces arranged in a bilateral symmetry mode relative to the frame and intercepting plates arranged in a front-back symmetry mode relative to the frame, the intercepting plates are fixed to the frame, and a check block is arranged at the bottom of one intercepting plate and arranged in the welding seam in a sliding mode. The side intercepting piece is vertically arranged on the frame in a sliding mode, the lower end of the side intercepting piece is embedded into the cylinder, and the two ends of the side intercepting piece abut against the two intercepting plates in a sliding mode respectively. The submerged-arc welding device solves the problems that when submerged-arc welding is adopted for butt joint of small-pipe-diameter barrels, welding flux is prone to sliding off, much welding flux is wasted, and meanwhile welding quality cannot be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc welding auxiliary equipment, in particular to a flux leakage prevention device for submerged arc welding. Background Art

[0002] Submerged arc welding (including submerged arc cladding and electroslag cladding) is a welding method in which an arc burns beneath a layer of flux. Its inherent advantages, such as stable weld quality, high welding productivity, the absence of arc flash, and minimal smoke, have made it a primary welding method for the fabrication of important steel structures such as pressure vessels, pipe sections, and box beams and columns. Flux, an indispensable material, primarily serves to form slag, thereby isolating the molten metal from air contamination, controlling the chemical composition of the weld metal, and ensuring its mechanical properties.

[0003] When welding small-diameter cylinders, in addition to ensuring sufficient flux in the ring, it is also necessary to ensure that the flux does not leak on both sides of the weld. However, due to the narrow and deep weld, the small diameter of the cylinder and the large curvature of the outer wall, the flux is easy to fall off. Insufficient flux can easily lead to incomplete welding, and defects such as pores, cracks and slag inclusions are prone to occur. Flux slippage will cause a lot of flux waste and cannot ensure welding quality. Utility Model Content

[0004] The purpose of the utility model is to provide a flux leakage prevention device for submerged arc welding, which solves the problems that when submerged arc welding is used to butt small-diameter cylinders, the flux easily slips, causing a lot of flux waste and failing to ensure welding quality.

[0005] The utility model is realized by the following technical solutions: a submerged arc welding flux leakage prevention device is arranged at the weld between two coaxially connected cylinders, comprising a frame and a leakage prevention box, the frame being mounted on the weld and moving in a circular motion along the weld, the leakage prevention box being arranged on the frame;

[0006] The leak-proof box includes side intercepting members symmetrically arranged with respect to the frame and intercepting plates symmetrically arranged with respect to the frame. The intercepting plates are fixed to the frame, and a stopper is provided at the bottom of the intercepting plates, and the stopper is slidably placed in the weld.

[0007] The side intercepting member is vertically slidably arranged on the vehicle frame, the lower end of the side intercepting member is engaged with the cylinder, and the two ends of the side intercepting member are respectively in sliding contact with the two intercepting plates.

[0008] Furthermore, the side intercepting member includes a baffle and a plurality of guide members arranged at intervals, and the lower end of the baffle is engaged with the cylinder;

[0009] The guide member includes a guide plate and a locking cap. The guide plate is arranged on the top of the baffle. A long sliding hole is vertically arranged on the guide plate. The locking cap includes a screw and a limiting cap. The limiting cap is arranged at one end of the screw. The screw passes through the long sliding hole and is threadedly connected to the frame. The diameter of the limiting cap is greater than the width of the long sliding hole.

[0010] Furthermore, it also includes a push spring, and the two ends of the push spring are respectively in contact with the frame and the baffle.

[0011] Furthermore, the push spring is a torsion spring.

[0012] Furthermore, the frame includes a rectangular frame and four groups of support members, and the four groups of support members are respectively arranged at the four corners of the frame;

[0013] The support member includes a stud, a nut, a support spring and a roller. The stud slides vertically through the rectangular frame and is then threadedly connected to the nut. A connecting block is provided at the lower end of the stud. The support spring is sleeved on the stud. The upper and lower ends of the support spring are respectively in contact with the rectangular frame and the connecting block.

[0014] The roller is rotatably arranged at the bottom of the connecting block, and the roller is rollingly connected to the outer wall of the cylinder.

[0015] Furthermore, the roller is a universal ball.

[0016] Furthermore, a connecting rod is provided on the top of the rectangular frame, and the connecting rod is connected to the welding gun.

[0017] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0018] 1. The side interceptor includes a baffle and several spaced-apart guide members, the lower end of which engages with the cylinder. The guide member includes a guide plate and a locking cap. The guide plate is mounted on the top of the baffle and has a vertically disposed long sliding hole, similar to a waist hole. The locking cap includes a screw and a limit cap. The limit cap is mounted on one end of the screw. The screw passes through the long sliding hole and is threadedly connected to the frame. The diameter of the limit cap is greater than the width of the long sliding hole. Several guide plates cooperate with the locking cap to prevent the baffle from rocking left and right or forward and backward, thereby ensuring that the baffle can slide vertically on the frame. At the same time, different baffles can be replaced according to the diameter of the cylinder, thereby ensuring that the lower end of the baffle can engage with the outer wall of the cylinder. The baffle can be removed by removing several locking caps, making it convenient and quick to replace the side enclosure. It also includes a push spring, the two ends of which respectively abut the frame and the baffle. The push spring acts downward on the baffle, thereby causing the lower end of the baffle to abut the cylinder as much as possible, preventing flux leakage.

[0019] 2. By adjusting the position of the nut on the screw, the distance between the rectangular frame and the roller can be adjusted, and then the distance between the two intercepting plates and the cylinder can be controlled, so that the intercepting plates can slide and abut against cylinders of different diameters, while further ensuring that the block is placed in the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic side view of the structure of a submerged arc welding flux leakage prevention device provided by the utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of a submerged arc welding flux leakage prevention device provided by the utility model;

[0023] Icons: 1. Cylinder, 2. Weld, 3. Frame, 31. Rectangular frame, 32. Stud, 33. Nut, 34. Support spring, 35. Roller, 36. Connecting block, 4. Side interceptor, 41. Baffle, 42. Guide, 421. Guide plate, 4211. Long sliding hole, 422. Locking cap, 43. Push spring, 5. Interceptor plate, 51. Block, 6. Connecting rod. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0026] Reference Figures 1 to 2As shown, this embodiment provides a flux leakage prevention device for submerged arc welding, which is arranged at the weld 2 between two coaxially connected cylinders 1, and includes a frame 3 and a leakage prevention box. The frame 3 is mounted on the weld 2 and moves in a circular motion along the weld 2, and the leakage prevention box is arranged on the frame 3; the leakage prevention box is stationary at different positions with the frame 3, and the two move in a circular motion around the cylinder 1 relative to the rotating cylinder 1, so that it moves in a circular motion along the weld 2. The leakage prevention box is filled with flux particles, which is used to assist in welding the weld 2 when the welding gun is welding.

[0027] The leak-proof box includes side intercepting parts 4 that are symmetrically arranged on the left and right, and positive intercepting parts that are symmetrically arranged on the front and back. The positive intercepting parts include intercepting plates 5 and block 51. The intercepting plates 5 are fixed to the frame 3. The block 51 is arranged at the bottom of one of the intercepting plates 5. The block 51 is slidably placed in the weld 2. In specific implementation, by replacing the block 51 of different sizes, it can be used to adapt to welds 2 of different welding widths and slopes, thereby assisting the welding gun in welding.

[0028] More specifically, Figure 1 and 2 As shown, the side intercepting member 4 is vertically slidably set on the frame 3, the lower end of the side intercepting member 4 is engaged with the cylinder 1, and the two ends of the side intercepting member 4 are respectively slidably abutted against the two intercepting plates 5, thereby forming a rectangular leak-proof box, and the bottom cover of the leak-proof box is set on the weld 2 between the two cylinders 1.

[0029] The side intercepting member 4 includes a baffle 41 and several guide members 42 arranged at intervals. The lower end of the baffle 41 is engaged with the cylinder 1; the guide member 42 includes a guide plate 421 and a locking cap 422. The guide plate 421 is arranged on the top of the baffle 41. A long sliding hole 4211 is vertically provided on the guide plate 421. The long sliding hole 4211 is similar to a waist hole. The locking cap 422 includes a screw and a limiting cap. The limiting cap is arranged at one end of the screw. The screw passes through the long sliding hole 4211 and is threadedly connected to the frame 3. The diameter of the limiting cap is greater than the width of the long sliding hole 4211.

[0030] like Figure 1 and 2 As shown, during the specific implementation, several guide plates 421 cooperate with the locking caps 422 to prevent the baffle 41 from shaking left and right or front and back, thereby ensuring that the baffle 41 can be vertically slidably set on the frame 3. At the same time, different baffles 41 can be replaced according to the different diameters of the cylinder 1, thereby ensuring that the lower end of the baffle 41 can engage with the outer wall of the cylinder 1; and the baffle 41 can be removed by removing several locking caps 422, and the replacement of the side enclosure is convenient and quick.

[0031] More specifically, a push spring 43 is further included, and the two ends of the push spring 43 are respectively in contact with the frame 3 and the baffle 41. The push spring 43 acts downward on the baffle 41, so that the lower end of the baffle 41 is in contact with the cylinder 1 as much as possible to prevent flux leakage.

[0032] As another embodiment, the push spring 43 is a torsion spring, and a connecting hole is provided at the top of the baffle 41 or the bottom of the frame 3, so that one end of the torsion spring is inserted into the connecting hole and the other end is abutted against the side without the connecting hole. The torsion spring is easy to install and has a large elastic force, and is more advantageous when installed in the narrow space here.

[0033] More specifically, Figure 1 and 2 As shown, the frame 3 includes a rectangular frame 31 and four sets of support members, which are respectively arranged at the four corners of the frame 3;

[0034] The support member includes a stud 32, a nut 33, a support spring 34 and a roller 35. The stud 32 slides vertically through the rectangular frame 31 and is threadedly connected to the nut 33. A connecting block 36 is provided at the lower end of the stud 32. The support spring 34 is sleeved on the stud 32. The upper and lower ends of the support spring 34 are respectively in contact with the rectangular frame 31 and the connecting block 36; the roller 35 is rotatably set at the bottom of the connecting block 36, and the roller 35 is rollingly connected to the outer wall of the cylinder 1.

[0035] When implementing it specifically, Figure 1 and 2 As shown, by adjusting the position of the nut 33 on the stud 32, the distance between the rectangular frame 31 and the roller 35 can be adjusted, and then the distance between the two intercepting plates 5 and the cylinder 1 can be controlled, so that the intercepting plates 5 can slide and abut against cylinders 1 of different diameters, while further ensuring that the block 51 is placed in the weld 2.

[0036] As another embodiment, the roller 35 is a universal ball, which makes it more convenient for the entire frame 3 to carry the leak-proof box and move on the weld 2 along with the welding gun.

[0037] At the same time, if Figure 1 and 2 As shown, a connecting rod 6 is provided on the top of the rectangular frame 31 , and the upper end of the connecting rod 6 is connected to the welding gun through a bolt, thereby achieving synchronous movement of the frame 3 and the leak-proof box and the welding gun relative to the rotating cylinder 1 .

[0038] When the welder is operating, the two cylinders 1 rotate synchronously counterclockwise. As the welder works, flux continuously flows into the weld groove between the two cylinders 1, i.e., into the weld seam 2. When welding nears a complete turn, the welding gun moves upward linearly, pushing the stopper 51 out of the final weld seam 2. The rollers 35, the baffles 41 on both sides, and the stopper ensure a certain distance between the welding gun and the cylinders 1, completing the welding process. Because there is no stopper below the rear interceptor plate 5, some welding slag and excess flux flow out through the gap between the rear interceptor plate 5 and the groove.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A flux leakage prevention device for submerged arc welding, arranged at a weld seam (2) between two coaxially butted cylinders (1), characterized in that: It comprises a vehicle frame (3) and a leak-proof box, wherein the vehicle frame (3) is mounted on the weld seam (2) and moves in a circular motion along the weld seam (2), and the leak-proof box is arranged on the vehicle frame (3); The leak-proof box comprises a side intercepting member (4) symmetrically arranged with respect to the vehicle frame (3) and an intercepting plate (5) symmetrically arranged with respect to the vehicle frame (3). The intercepting plate (5) is fixed to the vehicle frame (3). A stopper (51) is provided at the bottom of the intercepting plate (5), and the stopper (51) is slidably placed in the weld (2). The side intercepting member (4) is vertically slidably arranged on the vehicle frame (3), the lower end of the side intercepting member (4) is engaged with the cylinder (1), and the two ends of the side intercepting member (4) are respectively in sliding contact with the two intercepting plates (5).

2. A submerged arc welding flux leakage prevention device according to claim 1, characterized in that: The side intercepting member (4) comprises a baffle (41) and a plurality of guide members (42) arranged at intervals, and the lower end of the baffle (41) is engaged with the cylinder (1); The guide member (42) includes a guide plate (421) and a locking cap (422). The guide plate (421) is arranged on the top of the baffle (41). A long sliding hole (4211) is vertically arranged on the guide plate (421). The locking cap (422) includes a screw and a limiting cap. The limiting cap is arranged at one end of the screw. The screw passes through the long sliding hole (4211) and is threadedly connected to the vehicle frame (3). The diameter of the limiting cap is greater than the width of the long sliding hole (4211).

3. A submerged arc welding flux leakage prevention device according to claim 2, characterized in that: It also includes a push spring (43), both ends of which are in contact with the vehicle frame (3) and the baffle (41) respectively.

4. A submerged arc welding flux leakage prevention device according to claim 3, characterized in that: The push spring (43) is a torsion spring.

5. A submerged arc welding flux leakage prevention device according to any one of claims 1 to 4, characterized in that: The vehicle frame (3) comprises a rectangular frame (31) and four groups of support members, wherein the four groups of support members are respectively arranged at the four corners of the vehicle frame (3); The support member comprises a stud (32), a nut (33), a support spring (34) and a roller (35); the stud (32) vertically slides through the rectangular frame (31) and is then threadedly connected to the nut (33); a connecting block (36) is provided at the lower end of the stud (32); the support spring (34) is sleeved on the stud (32); and the upper and lower ends of the support spring (34) are respectively in contact with the rectangular frame (31) and the connecting block (36); The roller (35) is rotatably arranged at the bottom of the connecting block (36), and the roller (35) is rollingly connected to the outer wall of the cylinder (1).

6. The flux leakage prevention device for submerged arc welding according to claim 5, characterized in that: The roller (35) is a universal ball.

7. The flux leakage prevention device for submerged arc welding according to claim 5, characterized in that: A connecting rod (6) is provided on the top of the rectangular frame (31), and the connecting rod (6) is connected to the welding gun.

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