Submerged arc welding machine and welding flux supply device

Abstract

A flux supply device for a mobile submerged arc welding machine, installed on a welding vehicle, includes a flux hopper and an angle adjustment component. The angle adjustment component includes a connecting rod, a connecting plate, and a friction resistance component. The welding vehicle includes a crossbeam. The connecting plate is connected to the flux hopper. The connecting rod has a first connection point, a second connection point, and a third connection point in sequence. The first connection point is connected to the crossbeam, and the third connection point is rotatably connected to the connecting plate. The friction resistance component is connected to the second connection point and abuts against the connecting plate to form frictional resistance, applying external force to the flux hopper to overcome the frictional resistance between the friction resistance component and the connecting plate. The flux hopper rotates around the third connection point, allowing the residual flux in the flux hopper to flow out smoothly. A mobile submerged arc welding machine is also provided.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a flux supply device for a mobile submerged arc welding machine and a mobile submerged arc welding machine. Background Technology

[0002] Submerged arc welding is a welding method in which a continuously fed welding wire generates an electric arc under a layer of flux. The arc burns under the flux layer, melting the workpiece, welding wire, and flux to form a molten pool, with the molten flux covering the surface of the pool. As the welding carriage moves forward, the flux accumulates along the workpiece, and the welding wire moves accordingly, continuously forming a molten pool, which then solidifies into a weld. Unmelted flux can be recycled and reused.

[0003] Taking V-groove weld welding as an example, authorization announcement number CN103934547B discloses an automatic submerged arc welding trolley, including a welding nozzle, a wire feeder head, a flux hopper, a head adjustment mechanism, a wire spool, an electrical control box, and a traveling mechanism. The welding nozzle is installed on the wire feeder head, with its end positioned above the height of the groove weld. The head adjustment mechanism is installed on the traveling mechanism and also houses the wire feeder head, the wire spool, and the electrical control box. The traveling mechanism has at least two pairs of wheel sets consisting of weld travel wheels and surface travel wheels. The flux hopper is installed on the wire feeder head, with its end outlet positioned on one side of the welding nozzle to provide flux for the groove weld. The flux hopper is fixedly connected to the wire feeder head, and the angle of the flux hopper cannot be adjusted, preventing the smooth discharge of residual flux in the flux hopper. Summary of the Invention

[0004] In view of this, and to address the above-mentioned shortcomings, it is necessary to propose a flux supply device for a mobile submerged arc welding machine.

[0005] It is also necessary to propose a mobile submerged arc welding machine.

[0006] A flux supply device for a mobile submerged arc welding machine is installed on a welding vehicle and includes a flux hopper and an angle adjustment component. The angle adjustment component includes a connecting rod, a connecting plate, and a friction resistance component. The welding vehicle includes a crossbeam. The connecting plate is connected to the flux hopper. The connecting rod is provided with a first connection point, a second connection point, and a third connection point in sequence. The first connection point is connected to the crossbeam, and the third connection point is rotatably connected to the connecting plate. The friction resistance component is connected to the second connection point and abuts against the connecting plate to generate frictional resistance against the connecting plate.

[0007] Preferably, the friction resistance component includes a first screw and a first nut. The connecting plate is provided with an arc-shaped elongated hole, the center of which is a third connection point. One end of the first screw is connected to a second connection point, and the other end of the first screw passes through the elongated hole and is screwed into the first nut.

[0008] Preferably, the flux hopper includes a conical bottom wall, and the top of the conical bottom wall is provided with a flux outlet, which is offset from the geometric center of the conical bottom wall.

[0009] Preferably, the flux supply device includes a guide pipe and a connecting pipe, one end of the guide pipe is connected to the flux outlet, the other end of the guide pipe is connected to the upper end of the connecting pipe, and the lower end of the connecting pipe is connected to the inner cavity of the welding nozzle.

[0010] Preferably, the inner layer of the guide tube is a flexible tube, and the outer layer of the guide tube is a spring tube.

[0011] Preferably, the other end of the guide tube is embedded from the upper end of the connecting tube.

[0012] Preferably, the outer diameter of the guide tube is smaller than the inner diameter of the connecting tube.

[0013] A mobile submerged arc welding machine includes a welding cart, a welding nozzle, and a flux supply device, wherein the welding nozzle is mounted on a crossbeam.

[0014] Preferably, the welding vehicle includes a vehicle body and a column, the upper end of the column being connected to a crossbeam and the lower end of the column being connected to the vehicle body.

[0015] Preferably, the mobile submerged arc welding machine includes a position adjustment mechanism, which includes a base, a sliding rod, a third screw, a slider, and a handwheel. The base is in the shape of a "]", and includes an upper horizontal plate, a vertical plate, and a lower horizontal plate. Two sliding rods are provided between the upper and lower horizontal plates. The slider is slidably connected to the sliding rods. The third screw passes through the upper horizontal plate, the slider, and the lower horizontal plate in sequence. The third screw is rotatably connected to the upper and lower horizontal plates. The third screw is threadedly engaged with the slider to drive the vertical plate to move along the vertical plate by rotating the third screw. A handwheel is provided at the upper and lower ends of the third screw. The crossbeam is connected to the vertical plate, and the slider is connected to the column.

[0016] Beneficial effect: By applying external force to the flux hopper to overcome the frictional resistance between the frictional resistance component and the connecting plate, the flux hopper rotates at the third connection point, and the residual flux in the flux hopper can flow out smoothly. Attached Figure Description

[0017] Figure 1 This is the front view of the mobile submerged arc welding machine.

[0018] Figure 2 This is a top view of the mobile submerged arc welding machine.

[0019] Figure 3 This is a left view of the mobile submerged arc welding machine.

[0020] Figure 4 This is a right view of the mobile submerged arc welding machine.

[0021] Figure 5 for Figure 1 A partial magnified view of the friction resistance component described herein.

[0022] Figure 6 for Figure 2 A partial magnified view of the friction resistance component described herein.

[0023] Figure 7 for Figure 2 A partial enlarged view of the angle adjustment component described herein.

[0024] Figure 8 This is the front view of the position adjustment mechanism.

[0025] Figure 9 This is a left view of the position adjustment mechanism.

[0026] In the figure: flux supply device 10, flux hopper 11, angle adjustment component 12, connecting rod 121, connecting plate 122, friction resistance component 123, first screw 1231, first nut 1232, connecting belt 124, second screw 125, second nut 126, guide pipe 13, connecting pipe 14, welding carriage 20, crossbeam 21, carriage body 22, column 23, wheel 24, welding nozzle 30, position adjustment mechanism 40, base 41, upper horizontal plate 411, vertical plate 412, lower horizontal plate 413, slide rod 42, third screw 43, slider 44, handwheel 45, guide rail 50, wire feeding mechanism 60, welding wire spool 70. Detailed Implementation

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] See Figures 1 to 7 This utility model provides a flux supply device 10 for a mobile submerged arc welding machine, which is installed on a welding vehicle 20. It includes a flux hopper 11 and an angle adjustment component 12. The angle adjustment component 12 includes a connecting rod 121, a connecting plate 122, and a friction resistance component 123. The welding vehicle 20 includes a crossbeam 21. The connecting plate 122 is connected to the flux hopper 11. The connecting rod 121 is provided with a first connection point, a second connection point, and a third connection point in sequence. The first connection point is connected to the crossbeam 21, and the third connection point is rotatably connected to the connecting plate 122. The friction resistance component 123 is connected to the second connection point and abuts against the connecting plate 122 to form friction resistance against the connecting plate 122.

[0029] Beneficial effect: When an external force is applied to the flux hopper 11, the frictional resistance between the frictional resistance component 123 and the connecting plate 122 is overcome, and the flux hopper 11 rotates at the third connection point, so that the flux remaining in the flux hopper 11 can flow out smoothly.

[0030] See Figures 1 to 7 Furthermore, the friction resistance component 123 includes a first screw 1231 and a first nut 1232. The connecting plate 122 is provided with an arc-shaped elongated hole, the center of which is the third connection point. One end of the first screw 1231 is connected to the second connection point, and the other end of the first screw 1231 passes through the elongated hole and is screwed into the first nut 1232.

[0031] For example, the connecting plate 122 is welded to the flux hopper 11, the first screw 1231 is welded to the second connection point, the first nut 1232 is welded to the handle, and the handle is rotated until the first nut 1232 contacts the connecting plate 122, and the first nut 1232 and the connecting plate 122 form frictional resistance.

[0032] For example, the angle adjustment component 12 includes a connecting band 124, a second screw 125, and a second nut 126. The connecting rod 121 is connected to the crossbeam 21 at one end in a column shape. The connecting band 124 wraps around the connecting rod 121. Both ends of the connecting band 124 pass through a second screw 125. One end of the second screw 125 is threaded to the crossbeam 21, and the other end of the second screw 125 is screwed into the second nut 126.

[0033] See Figures 1 to 7 Furthermore, the flux hopper 11 includes a conical bottom wall, and the top of the conical bottom wall is provided with a flux outlet, which is offset from the geometric center of the conical bottom wall.

[0034] For example, a screen is placed horizontally inside the flux hopper 11 to filter the recovered flux.

[0035] For example, the conical bottom wall is a square pyramid, consisting of a first bottom wall, a second bottom wall, a third bottom wall, and a fourth bottom wall. The first and third bottom walls are opposite each other, and the second and fourth bottom walls are opposite each other. The flux flows on the first and third bottom walls based on the component of gravity of the flux along the first and third bottom walls. If the flux outlet is the geometric center of the conical bottom wall, the first and third bottom walls are symmetrical about the flux outlet, and the component of the flux force on the first and third bottom walls is equal, which is not conducive to the flux entering the flux outlet. Similarly, the situation is the same for the second and fourth bottom walls. The flux outlet is deviated from the design, which can break the situation of equal component forces and facilitate the flux entering the flux outlet.

[0036] See Figures 1 to 7Furthermore, the flux supply device 10 includes a guide pipe 13 and a connecting pipe 14. One end of the guide pipe 13 is connected to the flux outlet, the other end of the guide pipe 13 is connected to the upper end of the connecting pipe 14, and the lower end of the connecting pipe 14 is connected to the inner cavity of the welding nozzle 30.

[0037] For example, the guide tube 13 is made of elastic material and will be arc-shaped without bending, which would affect the smooth flow of flux. A valve is installed on the guide tube 13. The connecting tube 14 is made of rigid material and forms an angle with the horizontal plane.

[0038] See Figures 1 to 7 Furthermore, the inner layer of the guide tube 13 is a flexible tube, and the outer layer of the guide tube 13 is a spring tube.

[0039] See Figures 1 to 7 Furthermore, the other end of the guide tube 13 is embedded from the upper end of the connecting tube 14. The inner wall of the connecting tube 14 and the guide tube 13 form a spiral exhaust channel, through which the gas in the connecting tube 14 can be discharged.

[0040] See Figures 1 to 7 Furthermore, the outer diameter of the guide pipe 13 is smaller than the inner diameter of the connecting pipe 14.

[0041] See Figures 1 to 7 This utility model provides a mobile submerged arc welding machine, including a welding cart 20, a welding nozzle 30, and a flux supply device 10, with the welding nozzle 30 mounted on a crossbeam 21.

[0042] See Figures 1 to 7 Furthermore, the welding vehicle 20 includes a vehicle body 22 and a column 23. The upper end of the column 23 is connected to the crossbeam 21, and the lower end of the column 23 is connected to the vehicle body 22.

[0043] See Figure 8 and Figure 9 Furthermore, the mobile submerged arc welding machine includes a position adjustment mechanism 40, which includes a base 41, a slide rod 42, a third screw 43, a slider 44, and a handwheel 45. The base 41 is "]" shaped and includes an upper horizontal plate 411, a vertical plate 412, and a lower horizontal plate 413. Two slide rods 42 are provided between the upper horizontal plate 411 and the lower horizontal plate 413. The slider 44 is slidably connected to the slide rods 42. The third screw 43 passes through the upper horizontal plate 411, the slider 44, and the lower horizontal plate 413 in sequence. The third screw 43 is rotatably connected to the upper horizontal plate 411 and the lower horizontal plate 413. The third screw 43 is threadedly engaged with the slider 44 so that the vertical plate 412 can be moved along the vertical plate 412 by rotating the third screw 43. A handwheel 45 is provided at the upper end and the lower end of the third screw 43. The crossbeam 21 is connected to the vertical plate 412, and the slider 44 is connected to the column 23. The slide bar 42 serves as both a sliding support for the slider 44 and a reinforcement for the base 41, preventing deformation of the upper horizontal plate 411 and the lower horizontal plate 413.

[0044] The mobile submerged arc welding machine is equipped with two position adjustment mechanisms 40. The first position adjustment mechanism 40 is located between the column 23 and the crossbeam 21, and the second position adjustment mechanism 40 is located between the column 23 and the vehicle body 22. The vertical plate 412 of the second position adjustment mechanism 40 is connected to the vehicle body 22, and the slider 44 of the second position adjustment mechanism 40 is connected to the column 23. The second position adjustment mechanism 40 is not shown in the figure.

[0045] The mobile submerged arc welding machine includes a guide rail 50 and a welding carriage 20 including wheels 24, which are in rolling contact with the guide rail 50. The column 23 is provided with two crossbeams 21. The first crossbeam 21 is connected to the welding nozzle 30. A wire feeding mechanism 60 is installed on the first crossbeam 21, and a wire spool 70 is provided on the second crossbeam 21. The wire spool 70 is used to store the welding wire. The released welding wire is fed into the welding nozzle 30 through the wire feeding mechanism 60. The welding nozzle 30, the wire feeding mechanism 60, the wire spool 70, and the welding carriage 20 are the same as those in the disclosed technical solutions and will not be described in detail.

[0046] The modules or units in the device of this utility model embodiment can be merged, divided, or deleted according to actual needs.

[0047] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A flux supply device for a mobile submerged arc welding machine, installed on a welding vehicle, characterized in that: The device includes a flux hopper and an angle adjustment component. The angle adjustment component includes a connecting rod, a connecting plate, and a friction resistance component. The welding cart includes a crossbeam. The connecting plate is connected to the flux hopper. The connecting rod has a first connection point, a second connection point, and a third connection point in sequence. The first connection point is connected to the crossbeam, and the third connection point is rotatably connected to the connecting plate. The friction resistance component is connected to the second connection point and abuts against the connecting plate to generate frictional resistance against the connecting plate.

2. The flux supply device for a mobile submerged arc welding machine as described in claim 1, characterized in that: The friction resistance component includes a first screw and a first nut. The connecting plate is provided with an arc-shaped elongated hole, the center of which is a third connection point. One end of the first screw is connected to a second connection point, and the other end of the first screw passes through the elongated hole and is screwed into the first nut.

3. The flux supply device for a mobile submerged arc welding machine as described in claim 1, characterized in that: The flux hopper includes a conical bottom wall, and a flux outlet is provided at the top of the conical bottom wall, the flux outlet being offset from the geometric center of the conical bottom wall.

4. The flux supply device for a mobile submerged arc welding machine as described in claim 3, characterized in that: The flux supply device includes a guide pipe and a connecting pipe. One end of the guide pipe is connected to the flux outlet, the other end of the guide pipe is connected to the upper end of the connecting pipe, and the lower end of the connecting pipe is connected to the inner cavity of the welding nozzle.

5. The flux supply device for a mobile submerged arc welding machine as described in claim 4, characterized in that: The inner layer of the guide tube is a flexible tube, and the outer layer of the guide tube is a spring tube.

6. The flux supply device for a mobile submerged arc welding machine as described in claim 5, characterized in that: The other end of the guide tube is embedded from the upper end of the connecting tube.

7. The flux supply device for a mobile submerged arc welding machine as described in claim 6, characterized in that: The outer diameter of the guide tube is smaller than the inner diameter of the connecting tube.

8. A mobile submerged arc welding machine, characterized in that: It includes a welding vehicle, a welding nozzle, and the flux supply device as described in claim 4, wherein the welding nozzle is disposed on a crossbeam.

9. The mobile submerged arc welding machine as described in claim 8, characterized in that: The welding vehicle includes a vehicle body and columns. The upper end of the columns is connected to a crossbeam, and the lower end of the columns is connected to the vehicle body.

10. The mobile submerged arc welding machine as described in claim 9, characterized in that: The mobile submerged arc welding machine includes a position adjustment mechanism, which includes a base, a sliding rod, a third screw, a slider, and a handwheel. The base is "]" shaped and includes an upper horizontal plate, a vertical plate, and a lower horizontal plate. Two sliding rods are provided between the upper and lower horizontal plates. The slider is slidably connected to the sliding rods. The third screw passes through the upper horizontal plate, the slider, and the lower horizontal plate in sequence and is rotatably connected to the upper and lower horizontal plates. The third screw is threadedly engaged with the slider to drive the vertical plate to move along the vertical plate by rotating the third screw. A handwheel is provided at the upper and lower ends of the third screw. The crossbeam is connected to the vertical plate, and the slider is connected to the column.

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