9Ni steel submerged-arc welding device

Abstract

The invention relates to the technical field of welding devices, and discloses a Ni steel submerged-arc welding device which comprises a base, a bottom frame is fixedly arranged on the surface of the upper end of the base, a height adjusting assembly is arranged at the upper end of the base through the bottom frame, a workbench is arranged at the upper end of the height adjusting assembly, and a strip-shaped clamping groove is formed in one side of the surface of the upper end of the workbench. A placing seat is clamped on the surface of the upper end of the workbench through a strip-shaped clamping groove, a first strip-shaped inclined opening is formed in the side, close to the strip-shaped clamping groove, of the workbench, a second strip-shaped inclined opening corresponding to the first strip-shaped inclined opening is formed in the lower end of one side wall of a V-shaped groove of the placing seat, and T-shaped sliding grooves are formed in the upper ends of the two side walls of the V-shaped groove of the placing seat; a pressing assembly is arranged on the containing base through the T-shaped sliding groove. According to the 9Ni steel submerged-arc welding device, the pressing assembly is arranged, the pressing screw rod can be driven to rotate and move downwards by rotating the rotary knob, and the pressing disc can be driven to move downwards synchronously in the downward moving process of the pressing screw rod to press a 9Ni steel plate.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, in particular to a 9Ni steel submerged arc welding device. Background Art

[0002] 9Ni steel is a medium alloy steel with a Ni content of about 9% and excellent low temperature toughness. Due to its excellent low temperature comprehensive properties, it has been widely used in the fields of petroleum, chemical industry, shipbuilding, marine engineering, etc.

[0003] At present, the main methods used for 9Ni steel welding are: arc welding and submerged arc welding. When welding fillet welds of components, arc welding is usually the main method, and the welding speed is relatively slow, which affects production efficiency; at the same time, during submerged arc welding or arc welding, the steel plate is often placed on the workbench of the welding device, and the workbench of the welding device cannot be effectively adjusted in height according to needs. The 9Ni steel plate is on the workbench of the device, and the relative position of the two steel plates cannot be effectively adjusted, and the position of the two steel plates to be welded cannot be fixed. The quality of arc welding is easily affected by many factors, and the welding quality is not stable enough. Therefore, it is necessary to provide a 9Ni steel submerged arc welding device to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a 9Ni steel submerged arc welding device to solve the problems mentioned in the above background.

[0005] The present invention provides the following technical scheme: a 9Ni steel submerged arc welding device comprises a base, an upper surface of the base is fixedly provided with a bottom frame, an upper end of the base is provided with a height adjustment component through the bottom frame, a workbench is provided at the upper end of the height adjustment component, one side of the upper surface of the workbench is provided with a strip groove, the upper surface of the workbench is clamped with a placement seat through the strip groove, a V-shaped groove is provided on the placement seat, two Ni steel plates in a T-shaped butt-jointed state are placed in the V-shaped groove of the placement seat, a track bar for moving the walking mechanism of the submerged arc welding machine trolley is provided on the upper surface of the workbench and located on one side of the placement seat, a first strip oblique opening is provided on the side of the workbench close to the strip groove, a second strip oblique opening corresponding to the first strip oblique opening is provided at the lower end of one side wall of the V-shaped groove of the placement seat, both upper ends of the two side walls of the V-shaped groove of the placement seat are provided with T-shaped slide grooves, and a clamping component is provided on the placement seat through the T-shaped slide grooves.

[0006] Preferably, corresponding oblique through holes are provided on the workbench and the placement seat and on both sides of the second strip-shaped oblique opening, and the workbench is provided with a U-shaped support frame through the oblique through holes, and the front ends of the two side walls of the U-shaped support frame pass through the oblique through holes and extend into the V-shaped groove of the placement seat.

[0007] Preferably, corner blocks are fixedly provided at both ends of the V-groove of the placement seat, and positioning pins are provided on the corner blocks. The pin shaft end of the positioning pin is threadedly connected to the positioning pin through an external thread, and a number of positioning holes that cooperate with the positioning pins are equidistantly provided on both side walls of the U-shaped support frame, and handles are provided at the front end of both side walls of the U-shaped support frame.

[0008] Preferably, the clamping assembly includes a fixing frame, a clamping screw and a pressure plate, a slider is provided at the lower end of the fixing frame, the fixing frame is slidably connected to the placement seat through the slider, the clamping screw is threadedly connected to the top plate of the fixing frame, the pressure plate is provided at the lower end of the clamping screw, and the upper end of the clamping screw passes through the top plate of the fixing frame and is provided with a knob.

[0009] Preferably, the height adjustment assembly includes a bidirectional screw, a handle and a driving connecting rod. The bidirectional screw is rotatably arranged inside the bottom frame. One end of the bidirectional screw passes through the side wall of the bottom frame and is connected to the handle. The external threads opened at both ends of the bidirectional screw are in opposite directions. Two driving connecting rods are provided.

[0010] Preferably, the two driving links are both threadedly connected to the bidirectional screw, first sliding connection blocks are provided at both ends of the driving links, and limiting slide bars are provided on both sides inside the bottom frame. The limiting slide bars pass through the first sliding connection block and are slidingly connected to the first sliding connection block.

[0011] Preferably, a cross support rod is rotatably provided on the first sliding connection block, a top frame is provided on the lower end surface of the workbench, a second sliding connection block is slidably provided in the top frame, and the upper end of the cross support rod is rotatably connected to the second sliding connection block.

[0012] Preferably, a buffer assembly is provided on the upper surface of the workbench and at both ends of the track bar. The buffer assembly includes a vertical plate, an axle rod and a strip connecting plate. The lower end of the vertical plate is fixedly connected to the workbench, and axle holes are opened on both sides of the upper end of the vertical plate.

[0013] Preferably, a limit plate is provided at one end of the shaft rod, and the end of the shaft rod away from the limit plate passes through the shaft hole and is connected to the strip connecting plate. A rubber sleeve is provided on the outer surface of the shaft rod, and the rubber sleeve is located between the vertical plate and the strip connecting plate.

[0014] Preferably, both ends of the placement seat are fixedly provided with an epitaxial plate, the epitaxial plate is provided with fixing screws, and the epitaxial plate is fixedly connected to the workbench through the fixing screws.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The 9Ni steel submerged arc welding device is convenient for installing the U-shaped support frame by arranging oblique through holes. The positioning pin is rotated to move outward. When the front end of the positioning pin is separated from the positioning hole, the handle is held to control and adjust the length of the two side walls of the U-shaped support frame extending into the V-shaped groove, thereby adjusting the position of the U-shaped support frame. After the position adjustment of the U-shaped support frame is completed, the positioning pin is rotated again so that the front end of the positioning pin is stuck in the new positioning hole to ensure that the position of the U-shaped support frame is fixed. The operation is simple and the device is suitable for 9Ni steel plates of different widths. When the lower end of the 9Ni steel plate passes through the first strip oblique opening and the second strip oblique opening and extends under the workbench, the U-shaped support frame can effectively play a supporting and limiting role, so that two 9Ni steel plates can be T-jointed.

[0017] 2. The 9Ni steel submerged arc welding device is provided with a clamping assembly. By turning the knob, the clamping screw can be driven to rotate and move downward. During the downward movement of the clamping screw, the pressure plate will be driven to move downward synchronously and clamp the 9Ni steel plate. This can ensure that after the two 9Ni steel plates are T-shaped butt-jointed, there is an assembly gap of 1mm at the joint between the two, which effectively saves welding time and ensures welding quality.

[0018] 3. The 9Ni steel submerged arc welding device is provided with a height adjustment component. By turning the handle, the bidirectional screw can be driven to rotate synchronously, and then under the limiting action of the limiting slide rod, the two driving connecting rods can move horizontally along the bidirectional screw rod, approaching or moving away from each other. During the movement of the driving connecting rod, the first sliding connection block will be driven to move synchronously. When the first sliding connection blocks are close to each other, the cross support rod will lift up the workbench. When the first sliding connection blocks are away from each other, the cross support rod will drive the workbench to move downward, thereby realizing effective adjustment of the workbench height, thereby adapting to operation or observation by workers of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the 9Ni steel submerged arc welding device of the present invention;

[0020] Figure 2 It is a schematic diagram of the connection structure between the height adjustment component and the base of the present invention;

[0021] Figure 3 It is a schematic diagram of the connection structure between the cross support rod and the top frame of the present invention;

[0022] Figure 4 It is a schematic diagram of the installation structure of the U-shaped support frame and the pressing assembly of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the workbench of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the placement seat of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the clamping assembly of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the U-shaped support frame of the present invention;

[0027] Fig. 9 For the present invention Figure 4 A magnified schematic diagram of the structure in the middle.

[0028] In the figure: 1, base; 2, bottom frame; 201, limit slide bar; 3, height adjustment assembly; 301, bidirectional screw; 302, handle; 303, driving connecting rod; 304, first sliding connection block; 305, cross support rod; 4, workbench; 401, strip slot; 402, first strip oblique opening; 403, track bar; 404, top frame; 405, second sliding connection block; 5, buffer assembly; 501, vertical plate; 5 02, shaft; 503, strip connecting plate; 504, rubber sleeve; 6, placement seat; 601, T-shaped slide groove; 602, second strip oblique opening; 603, corner block; 604, extension plate; 7, U-shaped support frame; 701, positioning hole; 702, handle; 8, positioning pin; 9, clamping assembly; 901, fixing frame; 902, clamping screw; 903, pressure plate; 904, knob; 10, oblique through hole; 11, 9Ni steel plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-9 , a 9Ni steel submerged arc welding device, comprising a base 1, a bottom frame 2 is fixedly arranged on the upper end surface of the base 1, a height adjustment component 3 is arranged on the upper end of the base 1 through the bottom frame 2, a workbench 4 is arranged on the upper end of the height adjustment component 3, a strip groove 401 is opened on one side of the upper end surface of the workbench 4, a placement seat 6 is clamped on the upper end surface of the workbench 4 through the strip groove 401, a V-shaped groove is opened on the placement seat 6, and two 9Ni steel plates 11 are placed in a T-shaped connection in the V-shaped groove of the placement seat 6, the workbench 4 is provided with a strip groove 401, and a V-shaped groove is opened on the placement seat 6. A track bar 403 for the movement of the submerged arc welding machine trolley travel mechanism is arranged on the upper surface of the workbench 4 and located on one side of the placement seat 6. A first strip-shaped oblique opening 402 is provided on the side of the workbench 4 close to the strip-shaped slot 401. A second strip-shaped oblique opening 602 corresponding to the first strip-shaped oblique opening 402 is provided at the lower end of one side wall of the V-shaped slot of the placement seat 6. T-shaped slide grooves 601 are provided on the upper ends of both side walls of the V-shaped slot of the placement seat 6. A clamping assembly 9 is provided on the placement seat 6 through the T-shaped slide grooves 601.

[0031] Among them, corresponding oblique through holes 10 are opened on the workbench 4 and the placement seat 6 and on both sides of the second strip oblique opening 602. The workbench 4 is provided with a U-shaped support frame 7 through the oblique through holes 10. The front ends of the two side walls of the U-shaped support frame 7 pass through the oblique through holes 10 and extend into the V-shaped groove of the placement seat 6. By setting the oblique through holes 10, it is convenient to install the U-shaped support frame 7. When the lower end of the 9Ni steel plate 11 passes through the first strip oblique opening 402 and the second strip oblique opening 602 and extends into the bottom of the workbench 4, the U-shaped support frame 7 can effectively play a supporting and limiting role.

[0032] Among them, corner blocks 603 are fixedly provided at both ends of the V-shaped groove of the placement seat 6, and a locating pin 8 is provided on the corner block 603. The pin shaft end of the locating pin 8 is threadedly connected to the locating pin 8 through an external thread. A number of locating holes 701 that cooperate with the locating pin 8 are evenly spaced on the two side walls of the U-shaped support frame 7. Handles 702 are provided at the front ends of the two side walls of the U-shaped support frame 7. By setting the corner blocks 603, it is convenient to install the locating pin 8. The locating pin 8 is rotated to move outward. When the front end of the locating pin 8 is disengaged from the locating hole 701, the handle 702 is held to control the length of the two side walls of the U-shaped support frame 7 extending into the V-shaped groove, thereby adjusting the position of the U-shaped support frame 7. When the position adjustment of the U-shaped support frame 7 is completed, the locating pin 8 is rotated again so that the front end of the locating pin 8 is stuck in the new locating hole 701, ensuring that the position of the U-shaped support frame 7 is fixed. The operation is simple and it is suitable for 9Ni steel plates 11 of different widths.

[0033] Among them; the clamping assembly 9 includes a fixing frame 901, a clamping screw 902 and a pressure plate 903. A slider is provided at the lower end of the fixing frame 901. The fixing frame 901 is slidably connected to the placement seat 6 through the slider. The clamping screw 902 is threadedly connected to the top plate of the fixing frame 901. The pressure plate 903 is arranged at the lower end of the clamping screw 902. The upper end of the clamping screw 902 passes through the top plate of the fixing frame 901 and is provided with a knob 904. By turning the knob 904, the clamping screw 902 can be driven to rotate and move downward. During the downward movement of the clamping screw 902, the pressure plate 903 will be driven to move downward synchronously and clamp the 9Ni steel plate 11, which can ensure that after the two 9Ni steel plates 11 are T-shaped butt-jointed, there is an assembly gap of 1mm at the joint between the two.

[0034] Among them; the height adjustment component 3 includes a bidirectional screw 301, a handle 302 and a driving connecting rod 303. The bidirectional screw 301 is rotatably arranged inside the bottom frame 2. One end of the bidirectional screw 301 passes through the side wall of the bottom frame 2 and is connected to the handle 302. The external threads opened at both ends of the bidirectional screw 301 are in opposite directions. There are two driving connecting rods 303. By providing a base 1, it can effectively support the whole and facilitate the installation of the bottom frame 2. By providing the bottom frame 2, it is convenient to install the bidirectional screw 301 and realize the rotatability of the bidirectional screw 301.

[0035] Among them; the two driving connecting rods 303 are both threadedly connected with the bidirectional screw 301, and the first sliding connection blocks 304 are arranged at both ends of the driving connecting rods 303. The limiting sliding rods 201 are arranged on both sides of the bottom frame 2. The limiting sliding rods 201 pass through the first sliding connection blocks 304 and are slidably connected with the first sliding connection blocks 304. A cross support rod 305 is rotatably arranged on the first sliding connection block 304, and a top frame 404 is arranged on the lower end surface of the workbench 4. A second sliding connection block 405 is slidably arranged in the top frame 404. The upper end of the cross support rod 305 is rotatably connected with the second sliding connection block 405, and the handle is turned 302 can drive the bidirectional screw 301 to rotate synchronously, and then under the limiting action of the limiting slide bar 201, the two driving connecting rods 303 can move horizontally along the bidirectional screw 301, approaching or moving away from each other. During the movement of the driving connecting rod 303, the first sliding connection block 304 will be driven to move synchronously. When the first sliding connection blocks 304 are close to each other, the cross support rod 305 will lift up the workbench 4. When the first sliding connection blocks 304 are away from each other, the cross support rod 305 will drive the workbench 4 to move downward, thereby effectively adjusting the height of the workbench 4, thereby adapting to operation or observation by workers of different heights.

[0036] Among them, a buffer assembly 5 is provided on the upper surface of the workbench 4 and at both ends of the track bar 403. The buffer assembly 5 includes a vertical plate 501, an axle rod 502 and a strip connecting plate 503. The lower end of the vertical plate 501 is fixedly connected to the workbench 4, and axial holes are opened on both sides of the upper end of the vertical plate 501. A limit plate is provided at one end of the axle rod 502, and the end of the axle rod 502 away from the limit plate passes through the axle hole and is connected to the strip connecting plate 503. A rubber sleeve 504 is sleeved on the outer surface of the axle rod 502, and the rubber sleeve 504 is located between the vertical plate 501 and the strip connecting plate 503. When the walking mechanism of the submerged arc welding machine trolley moves along the track bar 403 and hits the strip connecting plate 503, the strip connecting plate 503 is squeezed by the walking mechanism of the submerged arc welding machine trolley, which will squeeze the rubber sleeve 504 and drive the axle rod 502 to move to the side away from the track bar 403. The rubber sleeve 504 shrinks, which can effectively buffer the external force and avoid damage to the walking mechanism of the submerged arc welding machine trolley.

[0037] Among them, the placement seat 6 is fixedly provided with an extension plate 604 at both ends, and the extension plate 604 is provided with fixing screws. The extension plate 604 is fixedly connected to the workbench 4 by fixing screws. By providing the extension plate 604 and the fixing screws, it is easy to install and fix the placement seat 6 to ensure the stability of the placement seat 6.

[0038] The working principle is that by setting the oblique through hole 10, it is convenient to install the U-shaped support frame 7, rotate the positioning pin 8 to move outward, and when the front end of the positioning pin 8 is out of the positioning hole 701, by holding the handle 702, the length of the two side walls of the U-shaped support frame 7 extending into the V-shaped groove is controlled, thereby adjusting the position of the U-shaped support frame 7. When the position adjustment of the U-shaped support frame 7 is completed, the positioning pin 8 is rotated again so that the front end of the positioning pin 8 is stuck in the new positioning hole 701 to ensure that the position of the U-shaped support frame 7 is fixed. The operation is simple and it can adapt to 9Ni steel plates 11 of different widths. When two 9Ni steel plates 11 are placed, the backs of the two 9Ni steel plates 11 are respectively close to the two side walls of the V-shaped groove of the placement seat 6. When the lower end of one of the 9Ni steel plates 11 passes through the first strip oblique opening 402 and the second strip oblique opening 602 and extends under the workbench 4, the U-shaped support frame 7 can effectively play a supporting and limiting role, so that the two 9Ni steel plates 11 can be T-jointed.

[0039] Furthermore, by providing a clamping assembly 9, the clamping screw 902 can be driven to rotate and move downward by turning the knob 904. During the downward movement of the clamping screw 902, the pressure plate 903 will be driven to move downward synchronously and clamp the 9Ni steel plate 11, so that after the two 9Ni steel plates 11 are butt-jointed in a T-shape, there is an assembly gap of 1 mm at the joint between the two. When the traveling mechanism of the submerged arc welding machine trolley moves along the track bar 403 and hits the strip connecting plate 503, the strip connecting plate 503 is squeezed by the traveling mechanism of the submerged arc welding machine trolley, which will squeeze the rubber sleeve 504 and drive the shaft rod 502 to move away from the track bar 403. The rubber sleeve 504 contracts, which can effectively buffer the external force and avoid damage to the traveling mechanism of the submerged arc welding machine trolley.

[0040] Furthermore, by rotating the handle 302, the bidirectional screw 301 can be driven to rotate synchronously, and then under the limiting action of the limiting slide bar 201, the two driving connecting rods 303 can move horizontally along the bidirectional screw 301, approaching or moving away from each other. During the movement of the driving connecting rod 303, the first sliding connection block 304 will be driven to move synchronously. When the first sliding connection blocks 304 are close to each other, the cross support rod 305 will lift up the workbench 4. When the first sliding connection blocks 304 are away from each other, the cross support rod 305 will drive the workbench 4 to move downward, thereby effectively adjusting the height of the workbench 4, thereby adapting to operation or observation by workers of different heights.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. 9Ni steel submerged arc welding device, characterized in that, The invention comprises a base (1), wherein a bottom frame (2) is fixedly arranged on the upper surface of the base (1), a height adjustment component (3) is arranged on the upper end of the base (1) through the bottom frame (2), a workbench (4) is arranged on the upper end of the height adjustment component (3), a strip-shaped card slot (401) is provided on one side of the upper surface of the workbench (4), a placement seat (6) is clamped on the upper surface of the workbench (4) through the strip-shaped card slot (401), a V-shaped groove is provided on the placement seat (6), two 9Ni steel plates (11) are placed in a T-shaped manner in the V-shaped groove of the placement seat (6), and the workbench (4) is provided with a strip-shaped card slot (401). A track bar (403) for moving the walking mechanism of the submerged arc welding machine trolley is arranged on the upper surface of the workbench (4) and located on one side of the placement seat (6); a first strip-shaped oblique opening (402) is provided on the side of the workbench (4) close to the strip-shaped slot (401); a second strip-shaped oblique opening (602) corresponding to the first strip-shaped oblique opening (402) is provided on the lower end of one side wall of the V-shaped slot of the placement seat (6); T-shaped sliding grooves (601) are provided on the upper ends of both side walls of the V-shaped slot of the placement seat (6); and a clamping assembly (9) is provided on the placement seat (6) through the T-shaped sliding grooves (601).

2. The 9Ni steel submerged arc welding device according to claim 1, characterized in that: The workbench (4) and the placement seat (6) are provided with corresponding oblique through holes (10) on both sides of the second strip-shaped oblique opening (602); the workbench (4) is provided with a U-shaped support frame (7) through the oblique through holes (10); the front ends of the two side walls of the U-shaped support frame (7) pass through the oblique through holes (10) and extend into the V-shaped groove of the placement seat (6).

3. The 9Ni steel submerged arc welding device according to claim 2, characterized in that: Corner blocks (603) are fixedly arranged at both ends of the V-shaped groove of the placement seat (6), and a positioning pin (8) is arranged on the corner block (603). The pin shaft end of the positioning pin (8) is threadedly connected to the positioning pin (8) through an external thread. A plurality of positioning holes (701) cooperating with the positioning pin (8) are evenly spaced on the two side walls of the U-shaped support frame (7), and handles (702) are arranged at the front ends of the two side walls of the U-shaped support frame (7).

4. The 9Ni steel submerged arc welding device according to claim 1, characterized in that: The clamping assembly (9) comprises a fixing frame (901), a clamping screw (902) and a pressure plate (903); a slider is provided at the lower end of the fixing frame (901); the fixing frame (901) is slidably connected to the placement seat (6) via the slider; the clamping screw (902) is threadedly connected to the top plate of the fixing frame (901); the pressure plate (903) is provided at the lower end of the clamping screw (902); and the upper end of the clamping screw (902) passes through the top plate of the fixing frame (901) and is provided with a knob (904).

5. The 9Ni steel submerged arc welding device according to claim 1, characterized in that: The height adjustment assembly (3) comprises a bidirectional screw (301), a handle (302) and a driving connecting rod (303); the bidirectional screw (301) is rotatably arranged inside the bottom frame (2); one end of the bidirectional screw (301) passes through the side wall of the bottom frame (2) and is connected to the handle (302); the external threads at both ends of the bidirectional screw (301) are in opposite directions; and two driving connecting rods (303) are provided.

6. The 9Ni steel submerged arc welding device according to claim 5, characterized in that: The two driving connecting rods (303) are both threadedly connected to the bidirectional screw rod (301), and first sliding connection blocks (304) are provided at both ends of the driving connecting rods (303). Limiting sliding rods (201) are provided on both sides inside the bottom frame (2), and the limiting sliding rods (201) pass through the first sliding connection block (304) and are slidably connected to the first sliding connection block (304).

7. The 9Ni steel submerged arc welding device according to claim 6, characterized in that: A cross supporting rod (305) is rotatably arranged on the first sliding connection block (304), a top frame (404) is arranged on the lower end surface of the workbench (4), a second sliding connection block (405) is slidably arranged in the top frame (404), and the upper end of the cross supporting rod (305) is rotatably connected to the second sliding connection block (405).

8. The 9Ni steel submerged arc welding device according to claim 1, characterized in that: A buffer assembly (5) is provided on the upper surface of the workbench (4) and at both ends of the track bar (403), the buffer assembly (5) comprising a vertical plate (501), an axle rod (502) and a strip connecting plate (503), the lower end of the vertical plate (501) is fixedly connected to the workbench (4), and both sides of the upper end of the vertical plate (501) are provided with axle holes.

9. The 9Ni steel submerged arc welding device according to claim 8, characterized in that: A limit plate is provided at one end of the shaft rod (502), and the end of the shaft rod (502) away from the limit plate passes through the shaft hole and is connected to the strip connecting plate (503). A rubber sleeve (504) is sleeved on the outer surface of the shaft rod (502), and the rubber sleeve (504) is located between the vertical plate (501) and the strip connecting plate (503).

10. The 9Ni steel submerged arc welding device according to claim 1, characterized in that: An extension plate (604) is fixedly arranged at both ends of the placement seat (6), and fixing screws are arranged on the extension plate (604). The extension plate (604) is fixedly connected to the workbench (4) via the fixing screws.

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