CN115319245B

CN115319245B - Double-end external joint submerged arc welding device for pressure vessel

Info

Publication number: CN115319245B
Application number: CN202210965830.2A
Authority: CN
Inventors: 刘辉峰
Original assignee: Shenjiang Pressure Vessel Ningbo Co ltd
Current assignee: Shenjiang Pressure Vessel Ningbo Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-05-23
Anticipated expiration: 2042-08-12
Also published as: CN115319245A

Abstract

The invention relates to a double-end external slit submerged arc welding device for a pressure container, which comprises a base, a cross rod and two upright posts, wherein two ends of the cross rod are respectively arranged on the two upright posts in a sliding manner, two groups of welding mechanisms are arranged on the cross rod in a sliding manner, two groups of fixing components which are arranged in opposite directions are arranged on the base, each group of fixing components comprises a first claw disc, a second claw disc, clamping jaws, fixing claws, springs and a first air cylinder, a plurality of clamping jaws are arranged on the first claw disc in a sliding manner, springs are arranged in each sliding chute, a protruding part facing the other group of fixing components is arranged on each clamping jaw, a first air cylinder is arranged on the first claw disc, the first air cylinder is connected with the second claw disc, a plurality of fixing claws are arranged on the second claw disc along the circumferential direction, a first inclined surface is arranged on each clamping jaw, a second inclined surface is arranged on each fixing claw, and each second inclined surface is respectively attached to one of the first inclined surfaces; the double-end external seam submerged arc welding device solves the technical problem that a double-end external seam submerged arc welding device of a pressure vessel in the prior art is not suitable for pressure vessels with different sizes.

Description

Double-end external joint submerged arc welding device for pressure vessel

Technical Field

The invention relates to the technical field of welding devices of pressure vessels, in particular to a double-head external seam submerged arc welding device for a pressure vessel.

Background

The pressure container is used for containing gas or liquid and has a sealing device for bearing certain pressure, and has extremely wide application range, and has important roles and functions in various departments such as industry, civilian use, military industry and the like and various fields of scientific research. The pressure vessel is mainly used in the technological processes of heat transfer, mass transfer, reaction and the like, and stores and transports gas or liquefied gas with pressure in the fields of chemical industry and petrochemical industry. In the prior art, in the process of manufacturing the pressure vessel, inner welding and outer welding are involved, and submerged arc welding is adopted for both welding, namely outer welding, namely: the double-end external seam welding device is utilized to connect the two ends of the pressure container with equipment capable of driving the pressure container to rotate, then the welding mechanism is used for welding the two ends of the pressure container, and the pressure container slowly rotates in the welding process, so that the whole circle of welding of the outer wall of the pressure container is realized. However, the prior art double-end external seam welding device for pressure vessels adopts a fixed-size claw disk as a fixing structure for fixing the pressure vessels, so that the welding device is not suitable for pressure vessels with different sizes.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a double-head external seam submerged arc welding device which can be suitable for pressure vessels with different sizes.

In order to solve the technical problems, the invention provides a double-end external slit submerged arc welding device for a pressure vessel, which comprises a base, a cross rod and two upright posts, wherein two ends of the cross rod are respectively arranged on the two upright posts in a sliding way along the vertical direction, two groups of welding mechanisms are arranged on the cross rod in a sliding way along the horizontal direction, two groups of fixing components which are arranged in opposite directions are arranged on the base, each group of fixing components comprises a first claw disc, a second claw disc, a plurality of clamping jaws, a plurality of fixing claws, a plurality of springs and a first cylinder, the first claw disc is cylindrical, a plurality of sliding grooves are formed on the first claw disc and at one end far away from the other group of fixing components in a circumferential equidistant way, the sliding grooves radially outwards penetrate through the first claw disc along the first claw disc, clamping claws are respectively arranged in the sliding grooves in a sliding way, one end of each sliding groove is connected with the clamping claws, the other end of each sliding groove is connected with the side walls which are close to the center of the circle of the first claw disc, the first cylinder is arranged on the first claw disc and is connected with the second claw disc, the second claw disc is coaxially arranged with the first claw disc, a plurality of fixed claws are circumferentially arranged on the second claw disc and on one end face of the first claw disc, which faces the fixed claws, a first inclined plane is arranged on each clamping jaw and on one end of the fixed claw, which faces the clamping jaw, a second inclined plane is arranged on each fixed claw and on one end of the clamping claw, each second inclined plane is respectively attached to one of the first inclined planes, when the first cylinder drives the first claw disc to move towards the direction of the second claw disc, the first inclined plane and the second inclined plane enable the clamping jaw to slide towards the direction of the center of the first claw disc, the spring is compressed, the second claw disc in one group of fixed assemblies is connected with a motor, a second claw disk in the other group of fixed components is rotationally connected with a second cylinder.

After the structure is adopted, the double-end external seam submerged arc welding device for the pressure vessel has the following advantages: when the pressure container is fixed before welding, the pressure container is lifted to the fixing component by using a crane and a lifting rope in the prior art, one end of the pressure container is firstly placed between first clamping jaws of the fixing component connected with a motor, then a first cylinder at the side is started to enable the first clamping jaw to move towards the second clamping jaw, under the action of the first inclined plane and the second inclined plane, the clamping jaws slide towards the circular center direction of the first clamping jaw until protruding parts on the clamping jaws are abutted against the outer wall of the pressure container to fix the pressure container, the second cylinder drives the other group of fixing components to move towards the pressure container until the first clamping jaw at the side is abutted against the other end of the pressure container, and then the first cylinder is started to enable the clamping jaws to be abutted against the outer wall of the pressure container, so that the two ends of the pressure container are fixed, and the pressure container can be suitable for pressure containers with different sizes; in addition, the vertical sliding cross rod and the two groups of welding mechanisms capable of sliding transversely enable the position of the welding mechanism to be flexibly adjusted according to the size of the pressure container, and further enable the welding mechanism to be suitable for pressure containers with different sizes.

As an improvement, a first guide rail which is vertically arranged is arranged on each of the two upright posts, two ends of the cross rod are respectively and slidably connected to the first guide rail, a screw is rotationally connected to one of the upright posts, and the screw is in threaded connection with the cross rod; by adopting the structure, the vertical height of the cross rod is changed by rotating the screw rod, and an additional fixing mechanism is not required to be arranged for fixing the cross rod.

As an improvement, a second guide rail arranged along the length direction of the cross rod is arranged on the cross rod, two groups of welding mechanisms are arranged on the second guide rail in a sliding manner, each group of welding mechanisms is connected with a fixing bolt in a threaded manner, and the fixing bolts are abutted against the second guide rail by rotating the fixing bolts; with this structure, the welding mechanism is fixed to the second rail by the fixing bolt.

As an improvement, a third guide rail is arranged on the base, the third guide rail is arranged along the length direction of the cross rod, a connecting seat is slidably arranged on the third guide rail, a second cylinder is arranged on the base and is connected with the connecting seat through a piston rod of the second cylinder, and a second claw disc in the other group of fixed assemblies is rotationally connected with the connecting seat; by adopting the structure, the second cylinder drives the connecting seat to move, so that the fixed component is driven to move, and the second claw disc in the fixed component is rotationally connected with the second cylinder through the connecting seat.

As an improvement, a plurality of telescopic rods are arranged between the first claw disc and the second claw disc in each group of fixed assemblies, each telescopic rod comprises an outer tube and an inner tube, the inner tubes are arranged in the outer tubes in a sliding manner, one of the outer tubes and the inner tubes is connected with the first claw disc, and the other one is connected with the second claw disc; by adopting the structure, the first claw disc and the second claw disc are connected through the telescopic rods, so that the first claw disc and the second claw disc can synchronously rotate.

As an improvement, a first bulge is arranged at one end of each clamping jaw, which is close to the center of the first claw disc, a second bulge is arranged on the sliding chute, which is close to the center of the first claw disc, and two ends of a spring are respectively sleeved on the first bulge and the second bulge; with this structure, the spring is restrained by the first projection and the second projection.

As an improvement, a rubber pad is arranged on the inner side end surface of each protruding part; by adopting the structure, the friction force between the protruding part and the pressure container is increased, and the fixing component is ensured to drive the pressure container to rotate.

As an improvement, two opposite side walls of each sliding chute are respectively provided with a limiting groove, two side walls of each clamping jaw are respectively provided with a third bulge, and each third bulge is respectively arranged in the limiting groove in a sliding way; by adopting the structure, the clamping jaw is limited by the third bulge and the limiting groove, so that the clamping jaw is prevented from moving along the axial direction of the first jaw plate.

Drawings

Fig. 1 is a schematic perspective view of the whole structure in the present invention.

Fig. 2 is a schematic perspective view of a fixing component part in the present invention.

Fig. 3 is a top view of a portion of a securing assembly according to the present invention.

Fig. 4 is a cross-sectional view of section A-A of fig. 3.

Fig. 5 is a cross-sectional view of the portion B-B of fig. 3.

Reference numerals: 1. a base; 2. a cross bar; 3. a column; 4. a welding mechanism; 5. a fixing assembly; 51. a first claw disk; 52. a second claw disk; 53. a clamping jaw; 54. a fixed claw; 55. a spring; 56. a first cylinder; 6. a chute; 7. a protruding portion; 8. a first inclined surface; 9. a second inclined surface; 10. a motor; 11. a second cylinder; 12. a first guide rail; 13. a screw; 14. a second guide rail; 15. a fixing bolt; 16. a third guide rail; 17. a connecting seat; 18. a telescopic rod; 181. an outer tube; 182. an inner tube; 19. a first protrusion; 20. a second protrusion; 21. a rubber pad; 22. a limit groove; 23. a third protrusion; 24. and a positioning rod.

Detailed Description

The double-end external submerged arc welding device for the pressure vessel is described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 5, a double-end external seam submerged arc welding device for a pressure vessel comprises a base 1, a cross bar 2 and two upright posts 3, wherein two ends of the cross bar 2 are respectively arranged on the two upright posts 3 in a sliding manner along a vertical direction, two groups of welding mechanisms 4 are arranged on the cross bar 2 in a sliding manner along a horizontal direction, in other words, two ends of the cross bar 2 are respectively arranged on the two upright posts 3 in a sliding manner along the vertical direction, and two groups of welding mechanisms 4 are arranged on the cross bar 2 in a sliding manner along the horizontal direction; the two upright posts 3 are respectively provided with a first guide rail 12 which is vertically arranged, two ends of the cross rod 2 are respectively and slidably connected to the first guide rails 12, one upright post 3 is rotatably connected with a screw rod 13, the screw rod 13 and the upright post 3 are axially fixed, so that the screw rod 13 can only rotate relative to the upright post 3 and cannot axially move, and the screw rod 13 is in threaded connection with the cross rod 2; be equipped with the second guide rail 14 that sets up along horizontal pole 2 length direction on the horizontal pole 2, two sets of welding mechanism 4 slide locate on the second guide rail 14, equal threaded connection has fixing bolt 15 on every welding mechanism 4 of group, makes fixing bolt 15 offset with the second guide rail 14 through rotating fixing bolt 15 to fix welding mechanism 4 and second guide rail 14, the concrete structure of welding mechanism 4 is prior art, and no more detailed description here.

As shown in fig. 1 and 2, two sets of fixing components 5 are arranged on the base 1, each set of fixing components 5 comprises a first claw disc 51, a second claw disc 52, a plurality of clamping jaws 53, a plurality of fixing claws 54, a plurality of springs 55 and a first air cylinder 56, the first claw disc 51 is cylindrical, a plurality of sliding grooves 6 are formed in the first claw disc 51 and are equidistant along the circumferential direction at one end far away from the other set of fixing components 5, the sliding grooves 6 penetrate through the first claw disc 51 along the first claw disc 51 radially outwards, clamping jaws 53 are slidably arranged in each sliding groove 6, the clamping jaws 53 slide along the first claw disc 51 radially, and in the embodiment, six sliding grooves 6 and clamping jaws 53 are formed in each first claw disc 51; as shown in fig. 4, a spring 55 is arranged in each chute 6, one end of the spring 55 is connected with the clamping jaw 53, and the other end of the spring 55 is connected with the side wall of the chute 6, which is close to the center of the first claw disc 51; the first protrusion 19 is disposed at one end of each clamping jaw 53 near the center of the first claw disc 51, the second protrusion 20 is disposed on the side wall of the sliding chute 6 near the center of the first claw disc 51, and two ends of the spring 55 are respectively sleeved on the first protrusion 19 and the second protrusion 20. In order to prevent the clamping jaw 53 from moving axially along the first jaw plate 51, two opposite side walls of each sliding chute 6 are respectively provided with a limiting groove 22, two side walls of each clamping jaw 53 are respectively provided with a third protrusion 23, and each third protrusion 23 is respectively arranged in the limiting groove 22 in a sliding manner.

As shown in fig. 1 and 2, a protruding part 7 facing the other group of fixing components 5 is arranged on one end of each clamping jaw 53 far from the center of the first clamping jaw 51, and the protruding part 7 is used for directly fixing a pressure container, so that in order to ensure enough friction force between the protruding part 7 and the pressure container, a rubber pad 21 is arranged on the inner side end surface of each protruding part 7; it should be noted that, in this embodiment, the inner end surface of the protruding portion 7, that is, the end surface of the protruding portion 7 facing the center of the first claw disc 51, is curved, and the rubber pad 21 is also curved.

As shown in fig. 5, a first cylinder 56 horizontally arranged is arranged on the first claw disc 51 and on an end surface far away from the other group of fixing assemblies 5, a piston rod of the first cylinder 56 is connected with a second claw disc 52, the second claw disc 52 and the first claw disc 51 are coaxially arranged, a plurality of fixing claws 54 are circumferentially arranged on the second claw disc 52 and on an end surface facing the first claw disc 51, six fixing claws 54 are arranged on each second claw disc 52 in total, a first inclined surface 8 is arranged on each clamping jaw 53 and on one end facing the fixing claw 54, a second inclined surface 9 is arranged on each fixing claw 54 and on one end facing the clamping jaw 53, each second inclined surface 9 is respectively attached to one of the first inclined surfaces 8, as shown in fig. 5, the first inclined surfaces 8 incline towards the center direction of the first claw disc 51 and towards the second claw disc 52, and the inclination angles of the second inclined surfaces 9 are identical with those of the first inclined surfaces 8. As shown in fig. 1, a motor 10 is connected to a second claw disc 52 in one set of fixing assemblies 5, a second cylinder 11 is rotatably connected to a second claw disc 52 in the other set of fixing assemblies 5, in this embodiment, the second claw disc 52 in the fixing assembly 5 on the left side of fig. 1 is connected to the motor 10, and the second claw disc 52 in the fixing assembly 5 on the right side is connected to the second cylinder 11; the base 1 is provided with a third guide rail 16, the third guide rail 16 is arranged along the length direction of the cross rod 2, the third guide rail 16 is provided with a connecting seat 17 in a sliding manner, the second cylinder 11 is arranged on the base 1, a piston rod of the second cylinder 11 is connected with the connecting seat 17, and the second claw disc 52 in the other group of fixed assemblies 5 is rotationally connected with the connecting seat 17, namely, the second claw disc 52 in the right fixed assembly 5 is rotationally connected with the second cylinder 11 through the connecting seat 17.

As shown in fig. 3, a plurality of telescopic rods 18 are arranged between the first claw disc 51 and the second claw disc 52 in each group of fixed assemblies 5, each telescopic rod 18 comprises an outer tube 181 and an inner tube 182, the inner tube 182 is slidably arranged in the outer tube 181, one of the outer tube 181 and the inner tube 182 is connected with the first claw disc 51, and the other is connected with the second claw disc 52; in this embodiment, the outer tube 181 is connected to the first claw disk 51, and the inner tube 182 is connected to the second claw disk 52.

In addition, as shown in fig. 1, a positioning rod 24 is arranged on the first claw disc 51 of the right fixing assembly 5 and on the end face facing the other group of fixing assemblies 5, the positioning rod 24 is arranged facing the other group of fixing assemblies 5 and is coaxial with the first claw disc 51, when the pressure vessel is installed, after the left fixing assembly 5 is fixed with the pressure vessel, the second cylinder 11 drives the right fixing assembly 5 to move leftwards, and in the process, the positioning rod 24 firstly stretches into the pressure vessel through a pipe orifice on the pressure vessel, so that the lifting rope is prevented from sliding off the pressure vessel to cause the pressure vessel to drop before the right fixing assembly 5 fixes the pressure vessel.

In the initial state, the spring 55 makes the clamping jaw 53 keep in an extending state, when the pressure container is fixed, the pressure container is lifted to the position of the fixing component 5 by using a crane and a lifting rope in the prior art, one end of the pressure container is firstly placed between the first clamping jaw 53 of the fixing component 5 on the left side, the end face on the left side of the pressure container is propped against the first clamping jaw 53, then the first cylinder 56 on the side is started, the first clamping jaw 51 moves towards the second clamping jaw 52, under the action of the first inclined plane 8 and the second inclined plane 9, the clamping jaw 53 slides towards the center of a circle of the first clamping jaw 51 until the protruding part 7 on the clamping jaw 53 is propped against the outer wall of the pressure container, so that the left end of the pressure container is fixed, then the second cylinder 11 is started to drive the fixing component 5 on the right side to move towards the direction of the pressure container until the first clamping jaw 51 on the right end of the side is propped against the pressure container, in the process, the positioning rod 24 extends into a pipe orifice of the pressure container, and then the first cylinder 56 is started, so that the clamping jaw 53 is propped against the outer wall of the pressure container, and the two ends of the pressure container are fixed, so that the pressure container can be applied for different sizes; it should be noted that, to ensure that the protruding portion 7 can abut against the outer wall of the pressure vessel, the length of the protruding portion 7 should be greater than the distance that the first claw disc 51 moves; in addition, the cross rod 2 capable of sliding vertically and the two groups of welding mechanisms 4 capable of sliding transversely enable the position of the welding mechanisms 4 to be flexibly adjusted according to the size of the pressure container, and further enable the welding mechanism to be suitable for pressure containers with different sizes.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above-described one embodiment, and all other examples obtained by those skilled in the art without making any inventive effort are within the scope of the present invention.

Claims

1. The utility model provides a double-end external slit submerged arc welding device for pressure vessel, includes base (1), horizontal pole (2) and two stand (3), on two stand (3) are located along vertical direction slip respectively at horizontal pole (2) both ends, slide along the horizontal direction on horizontal pole (2) and be equipped with two sets of welding mechanism (4), be equipped with two sets of fixed subassembly (5) that set up in opposite directions on base (1), characterized in that, every group fixed subassembly (5) all include first claw dish (51), second claw dish (52), a plurality of clamping jaw (53), a plurality of fixed claw (54), a plurality of spring (55) and first cylinder (56), first claw dish (51) are cylindrical, on first claw dish (51) and keep away from another group on the one end of fixed subassembly (5) along circumference equidistance be equipped with a plurality of spouts (6), spout (6) are followed first claw dish (51) are radially outwards run through first claw dish (51), are all equipped with in the spout (6) slip, each claw dish (55) are equipped with in the same side wall (55) and are connected in each claw dish (6) the one end (55) is connected with a spring (55), the clamping jaw (53) is provided with a protruding part (7) facing the other group of fixing components (5) at one end far away from the center of the first clamping jaw (51), a first air cylinder (56) horizontally arranged is arranged at one end face of the first clamping jaw (51) far away from the other group of fixing components (5), the first air cylinder (56) is connected with a second clamping jaw (52), the second clamping jaw (52) and the first clamping jaw (51) are coaxially arranged, a plurality of fixing jaws (54) are circumferentially arranged at one end face of the second clamping jaw (52) facing the first clamping jaw (51), a first inclined surface (8) is arranged at one end of each clamping jaw (53) facing the fixing jaw (54), a second inclined surface (9) is arranged at one end of each fixing jaw (54) facing the clamping jaw (53), each second inclined surface (9) is respectively matched with the first inclined surface (8), and when the first clamping jaw (51) is driven by the first inclined surface (56) to move towards the first inclined surface (55) in a sliding mode, and the first inclined surface (55) is driven by the first inclined surface (8), wherein, the second claw disc (52) in one group of the fixed components (5) is connected with a motor (10), and the second claw disc (52) in the other group of the fixed components (5) is rotationally connected with a second air cylinder (11).

2. The double-end external submerged arc welding device for the pressure vessel according to claim 1, wherein two upright posts (3) are respectively provided with a first guide rail (12) which is vertically arranged, two ends of the cross rod (2) are respectively connected to the first guide rails (12) in a sliding manner, one upright post (3) is rotationally connected with a screw rod (13), and the screw rod (13) is in threaded connection with the cross rod (2).

3. The double-end external submerged arc welding device for the pressure vessel according to claim 1, wherein the cross bar (2) is provided with a second guide rail (14) arranged along the length direction of the cross bar (2), two groups of welding mechanisms (4) are slidably arranged on the second guide rail (14), each group of welding mechanisms (4) is connected with a fixing bolt (15) in a threaded manner, and the fixing bolts (15) are abutted against the second guide rail (14) by rotating the fixing bolts (15).

4. The double-end external seam submerged arc welding device for the pressure vessel according to claim 1, wherein a third guide rail (16) is arranged on the base (1), the third guide rail (16) is arranged along the length direction of the cross rod (2), a connecting seat (17) is slidably arranged on the third guide rail (16), the second air cylinder (11) is arranged on the base (1) and a piston rod of the second air cylinder (11) is connected with the connecting seat (17), and the second claw discs (52) in the other group of fixing assemblies (5) are rotatably connected with the connecting seat (17).

5. The double-end external submerged arc welding apparatus for pressure vessels according to claim 1, wherein a plurality of telescopic rods (18) are arranged between the first claw disc (51) and the second claw disc (52) in each group of the fixed assemblies (5), the telescopic rods (18) comprise an outer tube (181) and an inner tube (182), the inner tube (182) is slidably arranged in the outer tube (181), one of the outer tube (181) and the inner tube (182) is connected with the first claw disc (51), and the other is connected with the second claw disc (52).

6. The double-end external submerged arc welding device for the pressure vessel according to claim 5, wherein a first bulge (19) is arranged at one end, close to the center of the first claw disc (51), of each clamping jaw (53), a second bulge (20) is arranged on the sliding groove (6) and on the side wall, close to the center of the first claw disc (51), and two ends of the spring (55) are respectively sleeved on the first bulge (19) and the second bulge (20).

7. A double-ended outer seam submerged arc welding apparatus for pressure vessels according to claim 1 wherein each of said protrusions (7) is provided with a rubber pad (21) on the inner end face.

8. The double-end external submerged arc welding device for the pressure vessel according to claim 1, wherein limiting grooves (22) are formed in two opposite side walls of each sliding groove (6), third protrusions (23) are formed in two side walls of each clamping jaw (53), and each third protrusion (23) is slidably arranged in each limiting groove (22).