CN111843134B

CN111843134B - Narrow-gap submerged arc welding gun

Info

Publication number: CN111843134B
Application number: CN202010730259.7A
Authority: CN
Inventors: 杨康艺; 毕少华
Original assignee: Ningbo Zhenhai Yuanan Petrochemical Equipment Co ltd
Current assignee: NINGBO ZHENHAI YUANAN PETROCHEMICAL EQUIPMENT CO.,LTD.
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2022-01-21
Anticipated expiration: 2040-07-27
Also published as: CN111843134A

Abstract

The invention relates to the technical field of arc welding guns, in particular to a narrow-gap submerged arc welding gun, which comprises a spray gun, wherein one end of the spray gun is fixedly connected with a spray welding mechanism, the other end of the spray welding mechanism is provided with a rotating mechanism, the outer side of the rotating mechanism is provided with a swinging mechanism, a rotating rod at one end is driven to rotate by an arranged rotating handle, the rotating rod drives a wire bunching cylinder and a gear in the same direction to rotate when rotating, the wire bunching cylinder emits a steel rope wound on the surface, the gear drives a ring-shaped rack to rotate, the gear at the other end is driven to rotate by the ring-shaped rack, the gear at the other end drives the rotating rod in the same direction to rotate, so that the wire bunching cylinder at the other end collects the steel rope, one of the two steel ropes pulls the spray welding pipe to release the spray welding pipe, the spray welding pipe swings through a ball, the bending angle of the spray welding pipe needs to be adjusted, and the condition that an operator shakes a nozzle of the spray gun to meet a welding seam is prevented from shaking, effectively preventing the welding of the welding seam from being affected and causing the welding seam to be infirm.

Description

Narrow-gap submerged arc welding gun

Technical Field

The invention relates to the technical field of arc welding guns, in particular to a narrow-gap submerged arc welding gun.

Background

Narrow gap welding is an advanced technology in the field of thick plate welding, compared with submerged arc welding of a common groove, the narrow gap welding has incomparable advantages, such as narrow groove, less metal filling amount of a welding seam, capability of saving a large amount of welding materials and welding working hours, and the structure of the metal of the welding seam and a heat affected zone is obviously refined due to lower heat input amount during narrow gap welding, so that the mechanical property, particularly the plasticity and the toughness of the welding seam are improved.

Current arc welding gun is when welding the material, it is just to the welding seam to need arc welding gun spun high temperature flame, melt the material of the welding seam department that the welding seam made through high temperature flame and mix together, can accomplish fixedly after the cooling, when welder is when the welding pipe, the welding seam of pipe is circular, just to the welding seam in order to make welder's spout, and then need to rotate welder and make welder's spout just to the welding seam always, and need the synchronous rotation health of operating personnel when rotating welder, it rocks to probably lead to the hand to rock the spout that drives the spray gun and rocks, and then welding to the welding of welding seam causes the influence to make welding seam welded insecure.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a narrow-gap submerged-arc welding gun.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a narrow clearance submerged arc welder, includes the spray gun, the one end fixedly connected with spray welding mechanism of spray gun, the other end of spray welding mechanism is provided with slewing mechanism, slewing mechanism's the outside is provided with swing mechanism, slewing mechanism's the surperficial drive mechanism that is provided with, swing mechanism's the joint has fixed establishment on the surface.

Specifically, the spray welding mechanism includes the gas-supply pipe, gas-supply pipe fixed connection is in the one end of spray gun, fixed the cup jointing has the drum on the other end inner wall of gas-supply pipe, the arc wall has been seted up to the inside of drum, the inside joint of arc wall has the ball, the round hole has been seted up to the inside of ball, the internal fixed cup jointing of round hole has the spray welding pipe.

Specifically, slewing mechanism includes the commentaries on classics piece, two commentaries on classics piece symmetry fixed connection is on the surface of gas-supply pipe, two change piece sliding connection inside same arc spout, the arc spout is seted up on the inner wall of rotary drum, the rotary drum activity cup joints on the surface of gas-supply pipe.

Specifically, the swing mechanism comprises rotating rods, the two rotating rods are symmetrically and rotatably connected to the outer wall of one end of the rotating cylinder close to the spray gun through first bearings, the surfaces of the other ends of the two rotating rods are fixedly sleeved with wire bundling cylinders, two ends of the outer wall of the two wire bundling cylinders are fixedly connected with limiting rings, the surfaces of the two rotating rods are fixedly sleeved with gears, the wire-bundling mechanism is characterized in that one end, far away from the rotary drum, of the rotary rod is fixedly connected with a rotary handle, steel ropes are fixedly connected to the surfaces of the two wire-bundling drums, the other ends of the two steel ropes penetrate through clamping grooves and are fixedly connected to the side walls of the two sides of the spray welding pipe, the two steel ropes are clamped inside two annular arc grooves, the two annular arc grooves are formed in the surfaces of the two rotating wheels respectively, the two rotating wheels are rotatably connected to the surfaces of the two rotating shafts respectively, and the two rotating shafts are fixedly connected to the insides of the two clamping grooves respectively.

Specifically, the transmission mechanism comprises a fixed rod, the fixed rod is rotatably connected to the surface of the rotary drum through a second bearing, the other end of the fixed rod is fixedly connected with a rotary table, and an annular rack is fixedly connected to the side wall, close to the rotary drum, of the rotary table.

Specifically, the fixed establishment includes the joint groove, and is a plurality of the joint groove equidistance is seted up respectively on the excircle lateral wall of two spacing rings, two the inside in joint groove joint respectively has two joint pieces, two the joint piece is fixed connection respectively on the surface of two ejector pads, two the equal fixedly connected with spring of the other end of ejector pad, two the other end of spring is fixed connection respectively in the inside of two fixed barrels, two the ejector pad is pegged graft respectively inside two fixed barrels, two fixed barrel is fixed connection respectively on the surface of two fixed plates, two the fixed plate is fixed connection respectively on the surface of rotary drum.

Specifically, one end of the cylinder, which is far away from the spray gun, is provided with a conical surface.

Specifically, the two gears are respectively meshed with two ends of the annular rack.

The invention has the beneficial effects that:

(1) according to the narrow-gap submerged-arc welding gun, the rotating rod at one end is driven to rotate through the arranged rotating handle, the rotating rod drives the wire bunching cylinder and the gear in the same direction to rotate when rotating, the wire ropes wound on the surface are discharged from the wire bunching cylinder, the gear drives the annular rack to rotate, the gear at the other end drives the gear at the other end to rotate, the gear at the other end drives the rotating rod in the same direction to rotate, the wire bunching cylinder at the other end collects the steel ropes, one of the two steel ropes pulls the other of the spray welding pipe to release the spray welding pipe, the spray welding pipe swings through the ball, the bending angle of the spray welding pipe needs to be adjusted, the situation that an operator drives a nozzle of the spray gun to shake in order to meet the shaking of the welding seam hand is avoided, and the situation that the welding seam is not firm due to influence on the welding seam is effectively avoided.

(2) According to the narrow-gap submerged arc welding gun, the push block is pushed to move through the arranged spring, the push block pushes the clamping blocks to be clamped in the corresponding clamping grooves, the clamping blocks are further fixed on the limiting rings, the bunching barrel is further prevented from rotating randomly, the steel rope is fixed, the spray welding pipe is further prevented from swinging, and the influence on the spray welding is prevented.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a narrow gap submerged arc welding gun according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 of a narrow gap submerged arc torch in accordance with the present invention;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 of a narrow gap submerged arc welding torch in accordance with the present invention;

FIG. 4 is an enlarged view of portion C of a narrow gap submerged arc torch of the present invention as shown in FIG. 1;

FIG. 5 is an enlarged view of portion D of a narrow gap submerged arc torch of the present invention as shown in FIG. 1;

FIG. 6 is an enlarged view of portion E of a narrow gap submerged arc torch of the present invention as shown in FIG. 1;

fig. 7 is a schematic structural diagram of a transmission mechanism of a narrow-gap submerged arc welding gun provided by the invention.

In the figure: 1. a spray gun; 2. a spray welding mechanism; 21. a gas delivery pipe; 22. a cylinder; 23. an arc-shaped slot; 24. a ball; 25. a circular hole; 26. spray welding the tube; 3. a rotating mechanism; 31. rotating the block; 32. an arc-shaped chute; 33. a rotating drum; 4. a swing mechanism; 41. a rotating rod; 42. a first bearing; 43. a wire bundling cylinder; 44. a limiting ring; 45. a gear; 46. rotating the handle; 47. a steel cord; 48. a card slot; 49. an annular arc groove; 5. a transmission mechanism; 51. fixing the rod; 52. a second bearing; 53. a rotating drum; 54. an annular rack; 6. a fixing mechanism; 61. a clamping groove; 62. a clamping block; 63. a push block; 64. a spring; 65. a fixed cylinder; 66. and (7) fixing the plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-7, the narrow-gap submerged arc welding gun according to the present invention includes a spray gun 1, a spray welding mechanism 2 is fixedly connected to one end of the spray gun 1, a rotating mechanism 3 is disposed at the other end of the spray welding mechanism 2, a swinging mechanism 4 is disposed outside the rotating mechanism 3, a transmission mechanism 5 is disposed on the surface of the rotating mechanism 3, and a fixing mechanism 6 is clamped on the surface of the swinging mechanism 4.

Specifically, spray welding mechanism 2 includes gas-supply pipe 21, gas-supply pipe 21 fixed connection is in the one end of spray gun 1, fixed cover has connect drum 22 on the other end inner wall of gas-supply pipe 21, arc wall 23 has been seted up to drum 22's inside, the inside joint of arc wall 23 has ball 24, round hole 25 has been seted up to ball 24's inside, spray welding pipe 26 has been cup jointed to the internal fixation of round hole 25, ball 24 is at the internal rotation of arc wall 23 when spray welding pipe 26 swings, and then prevent that the inside gas of gas-supply pipe 21 from revealing in the middle of drum 22.

Concretely, slewing mechanism 3 is including

changeing piece

31, 31 symmetry fixed connection of two commentaries on classics pieces is on the surface at gas-supply pipe 21, two change 31 sliding connection of piece are inside same arc spout 32, arc spout 32 is seted up on the inner wall of rotary drum 33, rotary drum 33 activity cup joints on the surface at gas-supply pipe 21, when the spray welding pipe 26 of spray gun 1 is rotated to needs, rotate rotary drum 33, draw-in groove 48 on the rotary drum 33 takes place to rotate, it rotates to drive steel cable 47 through draw-in groove 48, steel cable 47 drives spray welding pipe 26 and rotates, and then the orientation emergence rotation of the spray welding pipe 26 that makes.

Specifically, the swing mechanism 4 includes rotating rods 41, two rotating rods 41 are symmetrically and rotatably connected to the outer wall of one end of the rotating cylinder 33 close to the spray gun 1 through first bearings 42, the other ends of the two rotating rods 41 are fixedly sleeved with wire-bundling cylinders 43, two ends of the outer wall of the two wire-bundling cylinders 43 are fixedly connected with limit rings 44, gears 45 are fixedly sleeved on the surfaces of the two rotating rods 41, one end of the rotating rod 41 far from the rotating cylinder 33 is fixedly connected with a rotating handle 46, two wire ropes 47 are fixedly connected to the surfaces of the two wire-bundling cylinders 43, the other ends of the two wire ropes 47 pass through clamping grooves 48 and are fixedly connected to the side walls on both sides of the spray welding pipe 26, the two wire ropes 47 are clamped inside the two annular arc grooves 49, the two annular arc grooves 49 are respectively opened on the surfaces of the two rotating wheels 410, the two rotating wheels 410 are respectively rotatably connected to the surfaces of the two rotating shafts 411, the two rotating shafts 411 are respectively and fixedly connected inside the two clamping grooves 48, firstly, the rotating handle 46 is rotated, the rotating rod 41 on one side of the rotary drum 33 is driven to rotate by the rotating handle 46, the rotating rod 41 drives the wire bunching drum 43 and the gear 45 which are fixedly sleeved on the surface to rotate, the steel ropes 47 wound on the surface are released when the wire bunching drum 43 rotates, meanwhile, the rotating gear 45 drives the annular rack 54 to rotate, the gear 45 meshed with the other end is driven to rotate when the annular rack 54 rotates, the gear 45 on the other end of the rotary drum 33 drives the fixedly sleeved rotary rod 41 to rotate, the rotating rod 41 drives the wire bunching drum 43 on the surface to rotate, the wire bunching drum 43 is driven to roll up the other steel rope 47, the two steel ropes 47 slide on the surfaces of the two rotating wheels 410 when moving, the steel rope 47 rolled up in the two steel ropes 47 pulls the spray welding pipe 26, the other steel rope 47 rolled out enables the spray welding pipe 26 to swing, and the spray welding pipe 26 is driven to reversely swing when the two rotating rods 41 are reversely rotated.

Specifically, the transmission mechanism 5 includes a fixed rod 51, the fixed rod 51 is rotatably connected to the surface of the drum 33 through a second bearing 52, a rotary disc 53 is fixedly connected to the other end of the fixed rod 51, an annular rack 54 is fixedly connected to the side wall of the rotary disc 53, which is close to the drum 33, the rotary gear 45 drives the annular rack 54 to rotate, and the annular rack 54 drives the gear 45, which is engaged with the other end of the rotary rack, to rotate when rotating.

Specifically, the fixing mechanism 6 includes a clamping groove 61, a plurality of clamping grooves 61 are respectively equidistantly formed on the outer circumferential side walls of the two position-limiting rings 44, two clamping blocks 62 are respectively clamped inside the two clamping grooves 61, the two clamping blocks 62 are respectively fixedly connected to the surfaces of the two pushing blocks 63, the other ends of the two pushing blocks 63 are respectively fixedly connected with springs 64, the other ends of the two springs 64 are respectively fixedly connected to the inside of the two fixing cylinders 65, the two pushing blocks 63 are respectively inserted inside the two fixing cylinders 65, the two fixing cylinders 65 are respectively fixedly connected to the surfaces of the two fixing plates 66, the two fixing plates 66 are respectively fixedly connected to the surface of the rotary drum 33, when the adjustment is completed, the pushing blocks 63 are pushed by the springs 64 to move, the pushing blocks 63 push the clamping blocks 62 to be clamped inside the corresponding clamping grooves 61, so that the clamping blocks 62 fix the position-limiting rings 44 and further prevent the wire-bundling cylinder 43 from rotating randomly, the wire rope 47 is fixed, and the welding torch 26 is prevented from swinging.

Specifically, the conical surface is arranged at one end of the cylinder 22, which is far away from the spray gun 1, so that the spray welding pipe 26 can rotate conveniently through the conical surface, and the influence of the outer wall of the cylinder 22 on the rotation of the spray welding pipe 26 is prevented.

Specifically, the two gears 45 are respectively engaged with two ends of the annular rack 54, the rotating gear 45 drives the annular rack 54 to rotate, and the annular rack 54 drives the gear 45 engaged with the other end to rotate when rotating.

When in use, firstly, the rotating handle 46 is rotated, the rotating rod 41 at one side of the rotary drum 33 is driven to rotate by the rotating handle 46, the rotating rod 41 drives the wire harness barrel 43 and the gear 45 which are fixedly sleeved on the surface to rotate, the wire harness barrel 43 releases the steel rope 47 wound on the surface when rotating, simultaneously, the rotating gear 45 drives the annular rack 54 to rotate, the gear 45 meshed at the other end is driven to rotate when the annular rack 54 rotates, the gear 45 at the other end of the rotary drum 33 drives the fixedly sleeved rotating rod 41 to rotate, the rotating rod 41 drives the wire harness barrel 43 at the surface to rotate, further, the wire harness barrel 43 is driven to wind the other steel rope 47, the two steel ropes 47 slide on the surfaces of the two rotating wheels 410 when moving, the steel rope 47 wound in the two steel ropes 47 pulls the spray welding pipe 26, the other steel rope 47 released enables the spray welding pipe 26 to swing, when the two rotating rods 41 are rotated reversely, the spray welding pipe 26 is driven to swing reversely, and the time-saving adjustment is completed, promote the ejector pad 63 through spring 64 and remove, ejector pad 63 promotes inside corresponding joint groove 61 of joint piece 62 joint, and then the joint piece 62 that makes fixes spacing ring 44, and then prevent that beam tube 43 from rotating at will, the steel cable 47 that makes is fixed, and then prevent that spray-welded pipe 26 from taking place the swing, ball 24 is at 23 internal rotations of arc wall during spray-welded pipe 26 swings, and then prevent that the inside gas of gas-supply pipe 21 from revealing in the middle of drum 22, when the spray-welded pipe 26 of spray gun 1 needs to be rotated, rotate rotary drum 33, draw-in groove 48 on rotary drum 33 takes place to rotate, drive steel cable 47 through draw-in groove 48 and rotate, steel cable 47 drives spray-welded pipe 26 and rotates, and then the orientation emergence rotation of the spray-welded pipe 26 that makes.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A narrow gap submerged arc welding gun comprises a spray gun (1) and is characterized in that: one end of the spray gun (1) is fixedly connected with a spray welding mechanism (2), the other end of the spray welding mechanism (2) is provided with a rotating mechanism (3), the outer side of the rotating mechanism (3) is provided with a swinging mechanism (4), the surface of the rotating mechanism (3) is provided with a transmission mechanism (5), and the surface of the swinging mechanism (4) is clamped with a fixing mechanism (6);

the spray welding mechanism (2) comprises a gas pipe (21), the gas pipe (21) is fixedly connected to one end of the spray gun (1), a cylinder (22) is fixedly sleeved on the inner wall of the other end of the gas pipe (21), an arc-shaped groove (23) is formed in the cylinder (22), a round ball (24) is clamped in the arc-shaped groove (23), a round hole (25) is formed in the round ball (24), and a spray welding pipe (26) is fixedly sleeved in the round hole (25);

the rotating mechanism (3) comprises rotating blocks (31), the two rotating blocks (31) are symmetrically and fixedly connected to the surface of the gas conveying pipe (21), the two rotating blocks (31) are connected to the inside of the same arc-shaped sliding chute (32) in a sliding mode, the arc-shaped sliding chute (32) is formed in the inner wall of a rotating drum (33), and the rotating drum (33) is movably sleeved on the surface of the gas conveying pipe (21);

the swing mechanism (4) comprises rotating rods (41), the two rotating rods (41) are symmetrically and rotatably connected to the outer wall of one end, close to the spray gun (1), of the rotating cylinder (33) through first bearings (42), the other ends of the two rotating rods (41) are fixedly sleeved with wire bundling cylinders (43) on the surface, two ends of the outer wall of each wire bundling cylinder (43) are fixedly connected with limiting rings (44), gears (45) are fixedly sleeved on the surfaces of the two rotating rods (41), one end, far away from the rotating cylinder (33), of each rotating rod (41) is fixedly connected with a rotating handle (46), steel ropes (47) are fixedly connected to the surfaces of the two wire bundling cylinders (43), the other ends of the two steel ropes (47) penetrate through clamping grooves (48) and are fixedly connected to the side walls on the two sides of the spray welding pipe (26), and the two steel ropes (47) are clamped inside two annular arc grooves (49), the two annular arc grooves (49) are respectively formed in the surfaces of the two rotating wheels (410), the two rotating wheels (410) are respectively and rotatably connected to the surfaces of the two rotating shafts (411), and the two rotating shafts (411) are respectively and fixedly connected to the inner parts of the two clamping grooves (48);

the transmission mechanism (5) comprises a fixed rod (51), the fixed rod (51) is rotatably connected to the surface of the rotary drum (33) through a second bearing (52), the other end of the fixed rod (51) is fixedly connected with a rotary disc (53), and an annular rack (54) is fixedly connected to the side wall of one side, close to the rotary drum (33), of the rotary disc (53);

fixed establishment (6) are including joint groove (61), and are a plurality of joint groove (61) equidistance is seted up respectively on the excircle lateral wall of two spacing rings (44), two the inside difference joint in joint groove (61) has two joint pieces (62), two joint piece (62) fixed connection respectively is on the surface of two ejector pad (63), two the equal fixedly connected with spring (64) of the other end of ejector pad (63), two the other end difference fixed connection of spring (64) is in the inside of two fixed cylinder (65), two ejector pad (63) are pegged graft respectively inside two fixed cylinder (65), two fixed cylinder (65) fixed connection respectively is on the surface of two fixed plates (66), two fixed plate (66) are fixed connection respectively on the surface of rotary drum (33).

2. The narrow gap submerged arc welding gun according to claim 1, wherein: the end of the cylinder (22) far away from the spray gun (1) is provided with a conical surface.

3. The narrow gap submerged arc welding gun according to claim 1, wherein: the two gears (45) are respectively meshed with two ends of the annular rack (54).