CN220112530U

CN220112530U - Welding equipment

Info

Publication number: CN220112530U
Application number: CN202320699802.0U
Authority: CN
Inventors: 曹英斌; 司兴奎; 刘宝钢; 朱毅; 郭华; 陈瑞; 邓万强
Original assignee: Tongyu Heavy Industry Co Ltd
Current assignee: Tongyu Heavy Industry Co Ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-12-01
Anticipated expiration: 2033-03-29

Abstract

The utility model relates to the technical field of welding, in particular to welding equipment, which comprises: the welding mechanism comprises a welding gun, and at least two welding mechanisms are arranged at intervals and are positioned on the same straight line; the driving assembly is configured to drive each welding mechanism to reciprocate along a welding line between each workpiece to be welded; the welding tracking system is arranged on the welding mechanism; the steering mechanism is arranged between the welding mechanism and the driving assembly and is used for driving the welding mechanism to rotate so that the welding tracking system can be always positioned in front of a welding gun motion path; the utility model has the advantages of short welding period, high welding efficiency and good welding quality when welding super-thick steel plates.

Description

Welding equipment

Technical Field

The utility model relates to the technical field of welding, in particular to welding equipment.

Background

The super-thick steel plate is a steel plate with the thickness of more than 60 mm, and has wide application fields, such as super-thick steel plates for steel furnaces and fire boxes, super-thick steel plates for shipbuilding and ships, super-thick steel plates for pressure vessels and engineering machinery and super-thick steel plates for buildings; many large-scale super-thick steel plates are formed by welding a plurality of small-scale super-thick steel plates together;

at present, a single machine head and a single welding line are adopted for welding the steel plates of the extra thick plates in the market, and the welding of the extra thick plates needs multiple layers and multiple channels, so that the problems of long production period and low welding efficiency exist in the welding of the existing extra thick plates, and the problems of large change, such as temperature change and stress change, of the environment when the extra thick plates are welded, and the problem of poor welding quality when the existing extra thick plates are welded, are easily caused.

Disclosure of Invention

In view of the above drawbacks of the prior art, an object of the present utility model is to provide a welding apparatus, which can solve the problems of long welding cycle, low welding efficiency, and poor welding quality of the existing welding machine when welding super-thick steel plates.

To achieve the above and other related objects, the present utility model provides a welding apparatus comprising:

the welding mechanism comprises a welding gun, at least two welding mechanisms are arranged at intervals and are positioned on the same straight line;

a drive assembly configured to drive each of the welding mechanisms to reciprocate along a weld between each of the workpieces to be welded, respectively;

the welding tracking system is arranged on the welding mechanism;

and the steering mechanism is arranged between the welding mechanism and the driving assembly and is used for driving the welding mechanism to rotate so that the welding tracking system can be always positioned in front of the welding gun motion path.

As an alternative embodiment of the utility model, the welding mechanism is a double-wire narrow-gap submerged arc welding machine.

As an alternative embodiment of the present utility model, the driving assembly includes:

a fixed platform;

the movable frame is movably arranged on the fixed platform along the first direction;

the travelling car is movably arranged on the movable frame along a second direction, and the second direction is perpendicular to the first direction;

the lifter is movably connected in the inner cavity of the walking vehicle along a third direction, and the third direction is perpendicular to a plane where the first direction and the second direction are located; the steering mechanism is connected to the bottom end of the lifter.

As an alternative embodiment of the present utility model, the lower part of one side of the movable frame is connected with the lower walking beam walking on the ground; the upper part of the other side of the movable frame is connected with the upper traveling car beam, and the upper traveling car beam, the movable frame and the lower traveling car beam form an inverted L-shaped half-gantry frame structure.

As an alternative embodiment of the utility model, the movable frame is provided with a right-angle track and a flat track along the second direction; the walking vehicle is provided with V-shaped wheels walking on the right-angle track and flat wheels walking on the flat track.

As an alternative embodiment of the utility model, the lower part of the lower travelling car beam is provided with travelling wheels along a first direction; the walking speed of the walking wheel when the welding mechanism performs station conversion is far greater than the walking speed of the welding mechanism during welding.

As an alternative implementation scheme of the utility model, at least three sliding rails are uniformly distributed in the inner cavity of the travelling crane along the third direction;

the sliding blocks connected with the lifters are arranged in all the sliding rails; each sliding block is arranged in small clearance fit with the corresponding sliding rail.

As an alternative embodiment of the utility model, the elevator comprises a load beam, an auxiliary beam and two vertical rams which form a square frame structure; the bearing cross beam is arranged at the bottoms of the two vertical ram, the auxiliary cross beam is arranged at the tops of the two vertical ram, and the sliding block is arranged on the side face of the vertical ram.

As an alternative embodiment of the utility model, the steering mechanism comprises a slewing bearing rotatably connected with the welding mechanism and a locking block capable of locking the slewing bearing.

As an alternative embodiment of the utility model, the axles of the V-shaped wheel and the flat wheel are eccentric shafts with adjustable heights.

The beneficial effects are that:

1. according to the utility model, through the mutual cooperation of the welding mechanism, the driving assembly, the welding tracking system and the steering mechanism, the concentrated welding of a single long welding line on a thick plate with a certain thickness can be realized, so that at least two welding mechanisms can simultaneously weld one welding line, on one hand, the frequency of repeated cyclic overlaying of the long welding line in a specified time can be increased, and as the welding can input heat to the welding line, the problem that the welding quality is influenced due to insufficient welding input heat or untimely supplement of welding input heat when a single welding mechanism is used for welding one long welding line due to overlong welding line can be avoided or reduced; on the other hand, the welding efficiency can be further improved;

2. according to the utility model, through the mutual cooperation of the welding mechanism, the driving assembly, the welding tracking system and the steering mechanism, all the short welding seams on a plurality of thick plates with a certain thickness can be welded simultaneously, and each welding mechanism corresponds to one short welding seam to realize multi-layer multi-channel welding, so that the welding efficiency is improved, and all the welding seams are welded simultaneously and continuously in the same environment, thereby being beneficial to improving the welding quality;

3. according to the utility model, all the short welding seams on one weldment are welded at the same time, so that the unified preheating of all the welding seams on the weldment before welding can be facilitated, the unified heating and heat preservation can be realized during welding, and the unified heat treatment can be realized after welding, so that the times of preheating, heating and heat treatment in the whole welding process can be reduced, the efficiency is further improved, and the energy loss is reduced;

4. the utility model steers the whole submerged arc welding machine through the steering mechanism, thereby realizing synchronous steering of the welding tracking system, the output pipe for throwing welding flux and the welding gun, further realizing continuous welding of one welding mechanism to one welding seam in a reciprocating way, and further improving the welding efficiency;

5. according to the utility model, three double-wire narrow-gap submerged arc welding machines are adopted for welding, which is equivalent to six single-wire submerged arc welding machines, the efficiency is improved by six times, the wire content of the narrow-gap submerged arc welding machines is relatively less, and the production cost can be greatly reduced; meanwhile, the double-wire narrow-gap submerged arc welding machine is covered by flux in the welding process, the flux is melted into surface slag under the action of an electric arc, and weld metal is prevented from invading a molten pool by gas in surrounding atmosphere when in a liquid state, so that air holes in the weld are prevented from being mixed; meanwhile, the flux also adds excessive necessary metal elements into the molten pool and promotes the surface smoothness of the welding seam, so that the welding quality is improved;

6. the V-shaped wheels walking on the right-angle track and the flat wheels walking on the flat track are arranged on the walking vehicle, the V-shaped wheels can prevent the walking vehicle from shifting and moving when walking on the moving frame, and the flat wheels are used for walking and supporting the walking vehicle, so that the moving accuracy of the walking vehicle on the moving frame is improved, and the welding gun can walk correctly along the welding seam to improve the welding quality;

7. the wheel shafts of the V-shaped wheel and the flat wheel are eccentric shafts with adjustable heights; the heights of the V-shaped wheels and the flat wheels can be adjusted by adjusting the eccentric shafts, so that the leveling of the whole traveling vehicle can be realized, the whole traveling vehicle is horizontal, the alignment of the welding tracking system and the welding gun position is facilitated, and the overall welding quality of the welding equipment is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of the overall structure of the present utility model;

FIG. 2 is a right side view of the overall structure of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2A in accordance with the present utility model;

FIG. 4 is a front view of a portion of the structure of the walker and the elevator of the present utility model;

FIG. 5 is a top view of a portion of the structure of the walker and the elevator of the present utility model;

FIG. 6 is an enlarged view of a portion of the utility model at B of FIG. 5;

FIG. 7 is a schematic view of the structure of the lower walking frame of the present utility model;

FIG. 8 is a schematic view of the main beam structure of the present utility model;

FIG. 9 is a schematic view of the right angle track and flat track configuration of the main beam of the present utility model;

FIG. 10 is a schematic view of the flat wheel and V-wheel construction of the present utility model;

fig. 11 shows a full weldment of eight workpieces according to one embodiment of the utility model.

Reference numerals: work piece 01, welding mechanism 1, output pipe 101, welding gun 11, welding tracking system 12, drive assembly 2, fixed platform 21, upright 211, mobile frame 22, main beam 220, right angle track 2201, flat track 2202, lower traveling car beam 221, traveling wheel 2211, guide wheel 2212, upper traveling car beam 222, upright leg 223, ladder 224, traveling car 23, inner cavity 230, V-wheel 231, eccentric shaft 2311, flat wheel 232, slide rail 233, adjustment plate 234, elevator 24, load beam 241, auxiliary beam 242, vertical ram 243, slide 244, steering mechanism 3, slewing bearing 31, locking block 32.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the utility model is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the utility model. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.

Please refer to fig. 1 to 11. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

Where numerical ranges are provided in the examples, it is understood that unless otherwise stated herein, both endpoints of each numerical range and any number between the two endpoints are significant both in the numerical range. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs and to which this utility model belongs, and any method, apparatus, or material of the prior art similar or identical to the methods, apparatus, or materials of the embodiments of the utility model may be used to practice the utility model.

Referring to fig. 1-3, the present utility model provides a welding apparatus, comprising: the welding mechanism 1 comprises a welding gun 11, wherein the welding mechanism 1 at least comprises two welding mechanisms 1, and the two welding mechanisms 1 are spaced and are positioned on the same straight line;

a driving assembly 2, wherein the driving assembly 2 is configured to drive each welding mechanism 1 to reciprocate along a welding line between each workpiece 01 to be welded;

a welding tracking system 12, the welding tracking system 12 being arranged on the welding mechanism 1;

and the steering mechanism 3 is arranged between the welding mechanism 1 and the driving assembly 2 and is used for driving the welding mechanism 1 to rotate so that the welding tracking system 12 can be always positioned in front of the movement path of the welding gun 11.

It should be noted that, the welding mechanism 1 includes at least two welding mechanisms and all are located on the same straight line, at least two welding mechanisms 1 are located on the same straight line, and because each welding mechanism 1 has a certain volume, at least two welding mechanisms 1 located on the same straight line have a certain distance, so that the time for welding the same welding line position again can be shortened, the frequency of input heat during welding is improved within a specified time, the welding temperature difference during the cyclic welding of the welding mechanism 1 is reduced, and the welding quality is improved; FIG. 11 of the accompanying drawings shows a long weld joint and a plurality of short weld joints formed by splicing eight workpieces 01 to be welded; taking a welding device for welding a long weld joint with the length of 6m as an example:

when the long weld is welded by one welding mechanism 1, and when the welding mechanism 1 welds the beginning of the long weld, heat can be input to the beginning of the long weld, the heat is generated during welding, the time taken by the welding mechanism 1 to weld from the beginning of the long weld to the end of the long weld is T1, the time taken by the steering mechanism 3 to steer the welding mechanism 1 to enable the welding tracking system 12 to be positioned in front of the moving path of the welding gun 11 is T2, the time taken by the welding gun 11 of the welding mechanism 1 to weld from the end of the weld to the beginning of the weld is also T1, and the time interval T3 from the first time of welding the beginning of the long weld to the second time of welding the beginning of the long weld is as follows: at the end of the time interval T3, because the welding time interval is too long, the heat loss at the beginning end of the welding seam is too large, so that even if the single welding mechanism 1 welds the beginning end again and inputs heat, the beginning end of the long welding seam has the problem that the welding temperature is insufficient, and further has the problem that the welding temperature difference is large, and the problem that the cold crack is easily caused by the fact that the front-rear welding temperature difference T3 is large, thereby influencing the welding quality;

the long welding seam is welded through at least two welding mechanisms 1, the welding interval exists between the two welding mechanisms 1, the welding time interval T3 can be shortened, if the cyclic welding time T3 is 5min when a single welding mechanism 1 is used for welding, the long welding seam is simultaneously and circularly welded through a plurality of welding mechanisms 1, the longest time length of the initial end of the long welding seam, which is welded again, can be shortened to 4min or 3min due to the existence of other welding mechanisms 1, so that the time interval T3 is shortened, the initial end of the long welding seam is supplemented by the temperature of the interval welding of the plurality of welding mechanisms 1, the temperature difference when the initial end of the long welding seam is welded again is reduced, the welding quality is improved, and the occurrence of cold cracks of the whole welding piece is avoided or reduced.

Further, a plurality of short welds 1m long are taken as an example for the short welds between the plurality of workpieces 01 to be welded:

the scheme enables each welding mechanism 1 to respectively and correspondingly weld one welding line, so that the welding equipment is provided with at least two welding mechanisms 1, and at least two parallel welding lines among at least three workpieces 01 are welded at the same time; the welding equipment mainly welds thick plates, such as thick plates above 60 mm or thick plates above 300 mm or thick plates of 400 mm, and the welding mechanism 1 is required to weld back and forth due to the fact that the welding seam between the adjacent thick plates is deeper, the problem that the welding temperature difference is larger at a certain position of a single welding seam when the short welding seam does not exist in the process of re-welding a long welding seam is solved, and the problem that cold cracks are caused by the fact that the welding temperature in the welding process is reduced too fast is avoided or reduced because the workpiece 01 needs to have a higher temperature when alloy steel or a workpiece 01 with a larger wall thickness is welded; therefore, the thick plate needs to be preheated before being welded, heating and heat preservation are needed in the welding process, and rapid heat treatment is needed after the welding is completed; the number of the welding mechanisms 1 corresponds to the number of the welding lines, and each welding mechanism 1 corresponds to the reciprocating welding of one welding line, so that a plurality of workpieces 01 to be welded of one whole welding piece can be preheated simultaneously, heated and insulated simultaneously, a plurality of welding lines are welded simultaneously, and the whole welding piece is heat treated after the welding is finished, so that the temperature of the whole welding piece is uniform during the welding, the heat treatment effect after the welding is consistent, the welding defects are few, and the welding quality is high; the times of preheating, heating and heat preservation and postweld heat treatment during the welding of a single welding line only through a single welding head are reduced, and the problems of energy waste during the preheating, heat preservation and heat treatment of the adjacent short welding line of the workpiece 01 to be welded after one short welding line is welded are further avoided or reduced; and a plurality of welding mechanisms 1 weld the plurality of short welding seams simultaneously, so that the energy input quantity of the workpiece 01 to be welded is increased, and the problem that cold cracks are generated due to too fast welding temperature reduction in the welding process is further avoided.

By arranging the steering mechanism 3, when the welding tracking system 12 is used for welding by the welding mechanism 1, the welding tracking system 12 is always positioned in front of the welding gun 11 so as to ensure that the welding gun 11 always walks along a welding line, and welding is carried out in the round trip process of the welding mechanism 1, so that the welding efficiency is improved; the welding tracking system 12 is used for realizing that the welding mechanism 1 always welds along the welding line in the reciprocating welding process so as to improve the welding quality.

Further, the distance between the adjacent welding mechanisms 1 is adjustable, and the position of the steering mechanism 3 along the length direction of the bearing beam 241 is adjustable so as to adjust the distance between the adjacent welding mechanisms 1;

further, the present case is not strictly limited to short and long welds, typically 1m and below are relatively short welds, 1m and above are relatively long welds, and long and short welds are also relatively speaking for a larger whole weldment.

Referring to fig. 1-3, as an alternative embodiment of the present utility model, the welding mechanism 1 is a twin wire narrow gap submerged arc welding machine.

The welding mechanism 1 is a double-wire narrow-gap submerged arc welding machine or a submerged arc welding machine; the two welding guns 11 and the welding tracking system 12 are positioned on the same straight line; the submerged arc welding machine is a welding machine for welding by burning an electric arc under a flux layer, and has the characteristics of stable welding quality, high welding productivity, no arc light and less smoke dust; and three double-wire narrow-gap submerged arc welding machines are adopted for welding, which is equivalent to six single-wire submerged arc welding machines, the efficiency is improved by six times, the wire content of the narrow-gap submerged arc welding machines is relatively less, and the production cost can be greatly reduced.

The double-wire narrow-gap submerged arc welding machine comprises a welding tracking system 12, an output pipe 101 for feeding welding flux, two welding guns 11 and a welding flux extraction pipe which are sequentially arranged along the running direction of the double-wire narrow-gap submerged arc welding machine, and the steering mechanism 3 is arranged, so that the steering of the double-wire narrow-gap submerged arc welding machine can be realized, the welding tracking system 12, the output pipe 101 for feeding welding flux, the two welding guns 11 and the welding flux extraction pipe can be synchronously steered, and the welding gun 11 of the welding mechanism 1 can be further used for carrying out reciprocating welding.

The welding flux has the functions of submerged arc welding, namely, the welding flux is melted into surface slag under the action of an electric arc, so that weld metal is prevented from invading a molten pool by gas in surrounding atmosphere when in a liquid state, and air holes are prevented from being mixed in the weld; secondly, adding excessive necessary metal elements into a molten pool; thirdly, the surface of the welding seam can be flattened.

Further, the welding mechanism 1 comprises a direct current submerged arc welding machine or an alternating current submerged arc welding machine.

Referring to fig. 1-5, as an alternative embodiment of the present utility model, the driving assembly 2 includes: a fixed platform 21;

a moving frame 22, wherein the moving frame 22 is movably arranged on the fixed platform 21 along a first direction;

a traveling carriage 23, wherein the traveling carriage 23 is movably arranged on the movable frame 22 along a second direction, and the second direction is perpendicular to the first direction;

the lifter 24 is movably connected in the inner cavity 230 of the travelling car 23 along a third direction, and the third direction is perpendicular to the plane where the first direction and the second direction are located; the steering mechanism 3 is connected to the bottom end of the lifter 24.

The fixed platform 21 is fixed on the ground, and the movable frame 22 is movably mounted on the fixed platform 21 and walks along the first direction; the travelling carriage 23 is movably arranged on the movable frame 22 and walks along a second direction perpendicular to the first direction, a plane formed by the first direction and the second direction is parallel to the ground, the lifter 24 moves up and down along a third direction, the movable frame 22, the travelling carriage 23 and the lifter 24 are driven by the same controller and are controlled to move in coordination, so that the welding gun 11 of the welding mechanism 1 can translate in multiple degrees of freedom in space, and the welding mechanism 1 can conveniently move to the welding seam and walk along the welding seam.

Referring to fig. 1-2, as an alternative embodiment of the present utility model, a lower part of one side of the movable frame 22 is connected with a lower traveling beam 221 traveling on the ground; an upper traveling carriage beam 222 is connected to the upper portion of the other side of the movable frame 22, and the upper traveling carriage beam 222, the movable frame 22 and the lower traveling carriage beam 221 together form an inverted L-shaped half-gantry frame structure.

It should be noted that, the lower part of the movable frame 22 is connected with the lower traveling crane beam 221 through the set standing leg 223, and the upper part of the movable frame 22 is connected with the upper traveling crane beam 222, so that the lower traveling crane beam 221 is replaced by the upper traveling crane beam 222, and the upper traveling crane beam 222, the movable frame 22 and the lower traveling crane beam 221 form a half gantry frame structure, so that the swing of the movable frame 22 can be eliminated when the welding equipment starts and normally walks, the stability of the whole equipment is increased, and the whole welding quality is improved.

Referring to fig. 1-2, further, the fixed platform 21 includes a vertical column 211, and a first linear guide rail that slides in a matching manner with the upper walking beam 222 is disposed on the vertical column 211.

Further, the standing leg 223 is provided with a ladder stand 224 for the operator to go to the walking vehicle 23 for maintenance.

As an alternative embodiment of the present utility model, the right angle track 2201 and the flat track 2202 are disposed on the movable frame 22 along the second direction; the traveling carriage 23 is provided with V-wheels 231 traveling on the right angle rail 2201 and flat wheels 232 traveling on the flat rail 2202.

It should be noted that, the V-shaped wheels 231 may prevent the traveling carriage 23 from shifting and moving when traveling on the moving frame 22, and the flat wheels 232 may be used for traveling and supporting the traveling carriage 23, so as to improve the accuracy of the traveling carriage 23 moving on the moving frame 22, and further facilitate the welding gun 11 to properly travel along the welding seam to improve the welding quality.

Referring to fig. 8-9, further, the movable frame 22 includes two main beams 220, and a right angle rail 2201 and a flat rail 2202 are disposed on the main beams 220.

Referring to fig. 1-3 and 7, as an alternative embodiment of the present utility model, a traveling wheel 2211 is disposed at a lower portion of the lower traveling beam 221 along a first direction; the traveling speed of the traveling wheel 2211 when the welding mechanism 1 performs station conversion is far greater than the traveling speed of the welding mechanism 1 when the welding mechanism is used for welding.

It should be noted that, the travelling wheel 2211 is connected with a driving speed reducer, the travelling wheel 2211 walks to drive the moving frame 22 to move so as to align the welding gun 11 with the welding seam along the first direction before welding, the travelling carriage 23 mainly reciprocates along the length direction of the welding seam to weld in the welding process, the lifter 24 is mainly used to realize that the welding gun 11 approaches to the welding seam in the vertical direction, the travelling speed of the travelling wheel 2211 when the welding mechanism 1 performs station conversion is far greater than the travelling speed of the welding mechanism 1 when the welding mechanism welds, and the welding gun 11 can be aligned with the welding seam in the first direction rapidly, thereby improving the efficiency of the welding process; the station change includes at least a process in which the welding mechanism 1 searches for a weld, a process in which the moving frame 22 is moved away to facilitate the work 01 being placed on the welding station, or a process in which the work 01 that has been welded is moved away from the welding station.

A second linear guide rail matched with the lower walking beam 221 in a sliding manner is arranged on the ground, and guide wheels 2212 matched with the second linear guide rail are arranged on the lower walking beam 221 so as to prevent the whole welding equipment from deviating.

Referring to fig. 5-6, as an alternative embodiment of the present utility model, at least three sliding rails 233 are uniformly distributed in the inner cavity 230 of the walking vehicle 23 along the third direction,

a sliding block 244 connected with the lifter 24 is arranged in all the sliding rails 233; each sliding block 244 is arranged in a small clearance fit with the corresponding sliding rail 233.

Further, the number of the sliding rails 233 is three, and the three sliding rails 233 are uniformly distributed at an angle of 120 degrees;

further, the sliding rails 233 are four, one of the four sliding rails 233 is disposed on an inner sidewall of the inner cavity 230 in a first direction, one of the sliding rails 233 is disposed on an inner sidewall of the inner cavity 230 in a direction opposite to the first direction, one of the sliding rails 233 is disposed on an inner sidewall of the inner cavity 230 in a second direction, and one of the sliding rails 233 is disposed on an inner sidewall of the inner cavity 230 in a direction opposite to the second direction;

further, all the sliding rails 233 have an opening direction perpendicular to the length direction of the sliding rail 233, and all the opening directions of the sliding rails 233 are toward the center of the inner cavity 230.

It should be noted that, the opening direction refers to the direction of the opening at the concave position of the sliding rail 233; the opposite directions of the first direction, the second direction and the second direction are plane coordinate system directions, through reasonable arrangement of at least three sliding rails 233, the lifter 24 can be limited in the first direction, the second direction, the opposite directions of the first direction and the opposite directions of the second direction, each sliding block 244 is arranged in a small clearance fit with the corresponding sliding rail 233, if the clearance is smaller than 5 mm, further, the clearance is 0.05 mm or 0.1 mm or 1 mm or 2 mm, so that the lifter 24 is limited in the inner cavity 230 of the travelling carriage 23 along the first direction, the second direction, the opposite directions of the first direction and the opposite directions of the second direction, further, the shaking offset of the lifter 24 in the lifting process is reduced, and the accuracy of the welding seam position of the welding gun 11 is improved, and the welding quality is improved.

Referring to fig. 4, as an alternative embodiment of the present utility model, the lifter 24 includes a load beam 241, an auxiliary beam 242 and two vertical rams 243, which form a square frame structure; the bearing beams 241 are disposed at the bottoms of the two vertical ram 243, the auxiliary beams 242 are disposed at the tops of the two vertical ram 243, and the sliding blocks 244 are mounted on the sides of the vertical ram 243.

It should be noted that, by the arrangement of the bearing beam 241, the auxiliary beam 242 and the two vertical ram 243, the overall rigidity of the lifter 24 is improved, so that the lifter 24 has a larger bearing capacity; the side of the vertical ram 243 is matched with the sliding rail 233 through the sliding block 244 to realize that the lifter 24 slides in the traveling car 23, and as the vertical ram 243 has a certain length, the lifting straightness of the lifter 24 can be fully ensured, the downward moving straightness of the welding gun 11 is improved, and the improvement of welding quality is facilitated.

Referring to fig. 4-5, as an alternative embodiment of the present utility model, the inner cavity 230 of the travelling carriage 23 is square, the cross sections of the two vertical ram 243 are square, three sides of each vertical ram 243 are provided with sliding blocks 244, and corresponding to three sliding rails 233, and two vertical ram 243 correspond to six sliding rails 233, so as to improve the sliding stability of the lifter 24 in the travelling carriage 23.

As an alternative embodiment of the present utility model, all the sliding rails 233 include one main sliding rail, and the rest is an auxiliary sliding rail, and all the auxiliary sliding rails are positioned based on the main sliding rail.

It should be noted that, through the main sliding rail positioning the rest of the auxiliary sliding rail, the rest of the auxiliary sliding rail is positioned accurately, so that the accuracy of the installation positions of all the sliding rails 233 is improved, the installation difficulty of the sliding rails 233 is reduced, the difficulty of installing the lifter 24 on the sliding rails 233 is reduced, and the performance of the whole welding equipment is improved.

Referring to fig. 4-5, as an alternative embodiment of the present utility model, an adjusting plate 234 is disposed between the sliding rail 233 and the inner cavity 230 of the traveling carriage 23, and the adjusting plate 234 is used for adjusting a distance between the sliding rail 233 and an inner wall of the inner cavity 230 of the traveling carriage 23, so as to improve the accuracy of sliding matching between the sliding rail 233 and the sliding block 244;

as an alternative embodiment of the present utility model, racks are further disposed on both the vertical rams 243; the edge of the inner cavity 230 of the walking vehicle 23 is provided with a lifting drive speed reducer, and the output shaft of the lifting drive speed reducer is provided with a gear matched with the rack so as to realize the drive of the up-and-down movement of the lifter 24.

Referring to fig. 4, as an alternative embodiment of the present utility model, the steering mechanism 3 includes a pivoting support 31 rotatably connected to the welding mechanism 1, and a locking block 32 capable of locking the pivoting support 31.

The locking block 32 is connected with the lifter 24 on the driving assembly 2, one end of the slewing bearing 31 is connected with the welding mechanism 1, the other end of the slewing bearing 31 is connected with the lifter 24, the slewing bearing 31 drives the welding mechanism 1 to turn, the slewing bearing 31 which turns around the welding mechanism 1 is locked through the locking block 32, so that swinging of double-wire narrow-gap submerged arc welding in the welding process is avoided, and the integral welding quality of the welding equipment is improved.

Referring to fig. 1-3, as an alternative embodiment of the present utility model, the axles of the V-wheel 231 and the flat wheel 232 are both height-adjustable eccentric axles 2311.

The axle of the V-shaped wheel 231 and the flat wheel 232 is an eccentric axle 2311 with adjustable height, so that the heights of the V-shaped wheel 231 and the flat wheel 232 can be adjusted by adjusting the eccentric axle 2311, and the leveling of the whole travelling crane 23 can be realized, so that the whole travelling crane 23 is leveled, and the whole welding quality of the welding equipment is improved.

In this case, there is a rolling fit similar to the sliding fit, in addition to the sliding fit.

Further, a rotating node 13 for rotating the welding mechanism 1 along the horizontal direction is further arranged on the welding mechanism 1, so that the welding angle of the welding gun 11 at the welding seam can be conveniently adjusted;

the total working time is as follows:

when welding long weld joints among a plurality of workpieces 01: the welding guns 11 of the plurality of welding mechanisms 1 and the long welding lines are positioned on the same straight line, the plurality of welding mechanisms 1 are simultaneously rotated by the steering mechanism 3, and the plurality of welding mechanisms 1 are driven to move along the welding line direction by the moving frame 22, so that the single long welding line is circularly welded by the welding equipment, the welding efficiency is high, and the welding quality is good;

when welding a plurality of short welding seams among a plurality of workpieces 01: preheating a plurality of workpieces 01 to be welded, and heating and preserving heat; subsequently driving the moving frame 22 to align the welding gun 11 of the welding mechanism 1 with the welding line along the first direction; moving the carriage 23 to align the welding gun 11 of the welding mechanism 1 with the end of the weld; moving the lifter 24 to move the welding gun 11 of the welding mechanism 1 downward to approach the weld; starting welding, driving a traveling carriage 23, enabling a welding gun 11 to move along the welding line direction for welding, simultaneously welding all welding lines, and driving a welding mechanism 1 to turn by a steering mechanism 3 to enable the same welding gun 11 to reciprocate for welding the same welding line; after the welding is completed, the workpiece 01 welded into a whole is subjected to heat treatment, and the welding work is completed.

In conclusion, the utility model effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A welding apparatus, comprising:

a drive assembly configured to drive each of the welding mechanisms to reciprocate along a weld between the workpieces to be welded, respectively;

the welding tracking system is arranged on the welding mechanism;

2. A welding apparatus according to claim 1, characterized in that: the welding mechanism is a double-wire narrow-gap submerged arc welding machine.

3. A welding apparatus as defined in claim 1, wherein said drive assembly comprises:

a fixed platform;

the movable frame is movably arranged on the fixed platform along a first direction;

4. A welding apparatus according to claim 3, wherein: the lower part of one side of the movable frame is connected with the lower walking beam walking on the ground; the upper part of the other side of the movable frame is connected with the upper traveling car beam, and the upper traveling car beam, the movable frame and the lower traveling car beam form an inverted L-shaped half-gantry frame structure.

5. A welding apparatus according to claim 3, wherein: a right-angle track and a flat track are arranged on the movable frame along the second direction; the walking vehicle is provided with V-shaped wheels walking on the right-angle track and flat wheels walking on the flat track.

6. A welding apparatus according to claim 4, wherein: the lower part of the lower traveling car beam is provided with traveling wheels along a first direction; the walking speed of the walking wheel when the welding mechanism performs station conversion is far greater than the walking speed of the welding mechanism during welding.

7. A welding apparatus according to claim 3, wherein: at least three sliding rails are uniformly distributed in the inner cavity of the travelling car along the third direction;

8. A welding apparatus according to claim 3, wherein: the lifter comprises a bearing beam, an auxiliary beam and two vertical ram, wherein the bearing beam, the auxiliary beam and the two vertical ram form a square frame structure; the bearing cross beam is arranged at the bottoms of the two vertical ram, the auxiliary cross beam is arranged at the tops of the two vertical ram, and the sliding block is arranged on the side face of the vertical ram.

9. A welding apparatus according to claim 1, characterized in that: the steering mechanism comprises a slewing bearing which is rotationally connected with the welding mechanism and a locking block which can lock the slewing bearing.

10. A welding apparatus according to claim 5, wherein: the wheel shafts of the V-shaped wheel and the flat wheel are eccentric shafts with adjustable heights.