CN114769792A - Automatic welding method for vertical butt joint of steel pipe columns - Google Patents
Automatic welding method for vertical butt joint of steel pipe columns Download PDFInfo
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- CN114769792A CN114769792A CN202210703373.XA CN202210703373A CN114769792A CN 114769792 A CN114769792 A CN 114769792A CN 202210703373 A CN202210703373 A CN 202210703373A CN 114769792 A CN114769792 A CN 114769792A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
- B23K9/0052—Welding of pipe panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
- B23K9/0956—Monitoring or automatic control of welding parameters using sensing means, e.g. optical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses an automatic welding method for vertical butt joint of steel pipe columns, wherein a second welding surface of an upper steel pipe column and a first welding surface of a lower steel pipe column form a circular seam, and a guide rail is arranged on the upper steel pipe column, and the method comprises the following steps: bottom layer welding: the welding gun takes the initial reference point as a starting point, advances along the guide rail, swings up and down in the circular seam and finishes bottom welding by a welding wire; when the welding gun advances along the guide rail, the distance between the welding gun and the lower steel pipe column is kept consistent through the automatic distance compensation system; and (3) second layer welding: the second datum point is lower than the initial datum point, and the welding gun advances along the guide rail and swings up and down in the circular seam by taking the second datum point as a starting point so as to complete the first welding of the second layer and the second welding of the second layer by the welding wire. Compared with the prior art, the invention ensures the welding quality by performing horizontal distance compensation during welding the bottom layer and performing height compensation during welding the second layer. And the horizontal distance compensation step is omitted during welding the second layer, so that the welding efficiency is improved.
Description
Technical Field
The invention relates to the field of building construction, in particular to a vertical butt joint automatic welding method for a steel pipe column.
Background
The large-diameter steel pipe is long in length and inconvenient to transport, the large-diameter steel pipe is generally manufactured in a factory in a segmented mode, then welding and installation are carried out on the large-diameter steel pipe in a segmented mode from bottom to top on site, a first section of steel pipe is installed firstly, then a second section of steel pipe is placed above the first section of steel pipe through a lifting facility, a positioning plate and a positioning connecting plate of the first section of steel pipe and the second section of steel pipe, protruding cylindrical surfaces of the first section of steel pipe and the second section of steel pipe are arranged in a butt joint position area, the positioning plate and the positioning connecting plate protrude out of the cylindrical surfaces by a certain height, and obstacle crossing difficulty is formed for automatic welding. In the prior art, a plurality of common electric welding machines and a plurality of welding workers are used for carrying out circular seam welding by manual shielded metal arc welding, and the traditional welding method has the following defects in the aspects of resource investment, quality control, working environment, production efficiency, engineering cost and the like:
(1) the requirement on the operation technology of welders is high, the welding quality control difficulty is high, the manual welding efficiency is low, and the engineering cost is relatively high;
(2) workers have high dependence on the working environment, and the working environment and working conditions of the workers are relatively poor and the efficiency is slower as the welded steel pipes go upwards.
Disclosure of Invention
The invention provides an automatic welding method for vertical butt joint of steel pipe columns, which is characterized in that the automatic welding of two sections of steel pipe columns is realized by performing bottom layer welding and second layer welding on a circular seam, and the welding quality is ensured by performing horizontal distance compensation during the bottom layer welding and performing height compensation during the second layer welding. And the horizontal distance compensation step is omitted in the welding of the second layer, so that the welding efficiency is further improved.
The invention provides a vertical butt joint automatic welding method for steel pipe columns, wherein a first welding surface is arranged at the top end of a lower steel pipe column, a second welding surface is arranged at the bottom of an upper steel pipe column, the first welding surface is a plane, an inclined surface is formed on the second welding surface, the second welding surface of the upper steel pipe column and the first welding surface of the lower steel pipe column form a circular seam, a circular guide rail is installed on the upper steel pipe column, and the vertical butt joint automatic welding method for the steel pipe columns comprises the following steps:
bottom layer welding: setting an initial reference point, wherein a welding gun is inclined and extends into a circular seam, an included angle between the welding gun and a first welding surface of the lower steel pipe column is an acute angle, the welding gun takes the initial reference point as a starting point, and swings up and down in the circular seam to complete bottom welding by a welding wire while advancing along a guide rail; when the welding gun advances along the guide rail, the distance between the welding gun and the lower steel pipe column is kept consistent through an automatic distance compensation system;
second layer welding: the welding gun takes the initial reference point as a starting point, moves outwards to reach a point a, and then is set as a second reference point, the second reference point is lower than the initial reference point, the welding gun takes the second reference point as a starting point, and swings up and down in the circular seam to complete the first welding of a second layer by a welding wire while advancing along the guide rail; and the welding gun moves upwards by a distance c by taking the second reference point as a starting point, then swings up and down in the circular seam while advancing along the guide rail, and finishes second welding of a second layer by using a welding wire.
Preferably, the method further comprises the following steps of: the welding gun takes the third reference point as a starting point, swings up and down in the circular seam while advancing along the guide rail and finishes the first welding of the third layer by using a welding wire; the welding gun moves upwards for a distance c with the third reference point as a starting point, then swings up and down in the circular seam while advancing along the guide rail, and finishes the second welding of the third layer by welding wires; and the welding gun moves upwards for 2 distances c by taking the third reference point as a starting point, then swings up and down in the circular seam while advancing along the guide rail, and finishes the third welding of the third layer by using the welding wire.
Preferably, the step of moving outward to the point a from the initial reference point comprises the following steps: and (4) outwards translating the steel pipe column by a distance x along a direction parallel to the first welding surface of the lower steel pipe column by taking the initial reference point as a starting point, downwards translating the steel pipe column by a distance z1 along a direction vertical to the first welding surface of the lower steel pipe column, and then reaching a point a.
Preferably, the step of moving outward to the point b from the second reference point comprises the following steps: and (4) outwards translating the steel pipe column by a distance x along a direction parallel to the first welding surface of the lower steel pipe column by taking the second reference point as a starting point, downwards translating the steel pipe column by a distance z2 along a direction vertical to the first welding surface of the lower steel pipe column, and then reaching a point a.
Preferably, the automatic distance compensation system comprises a horizontal movement mechanism and a laser sensor, the initial distance between the laser sensor and the surface of the lower steel pipe column is m1, the real-time distance between the laser sensor and the surface of the lower steel pipe column is m2 when the welding gun advances along the guide rail, and the horizontal movement mechanism drives the welding gun to perform horizontal movement compensation according to the difference between m2 and m1, so that the distance between the laser sensor and the surface of the lower steel pipe column is m1 all the time.
Preferably, in a horizontal projection, an included angle between the welding gun and the upper steel pipe column is an acute angle.
Preferably, when the upper steel pipe column is positioned in front of the welding gun and the gun head of the welding gun is positioned on the right side of the gun tail, the welding gun advances along the guide rail in a clockwise direction.
Preferably, the welding gun is connected with an up-and-down swinging mechanism, and the up-and-down swinging mechanism drives the welding gun to swing up and down.
Preferably, the horizontal moving mechanism is connected with a height moving mechanism, the up-and-down swinging mechanism is connected with the horizontal moving mechanism, and the height moving mechanism drives the welding gun to move along the height direction of the upper steel pipe column.
Preferably, the height moving mechanism is connected with a travelling mechanism, and the travelling mechanism drives the welding gun to move along the guide rail.
Preferably, the guide rail is formed by splicing at least two arc-section rails, and the guide rail and the upper steel pipe column are fixed through electromagnets.
Preferably, a horizontal manual moving mechanism and a height manual moving mechanism are connected between the up-and-down swinging mechanism and the horizontal moving mechanism, and the welding gun can be subjected to fine position adjustment through the horizontal manual moving mechanism and the height manual moving mechanism before initial welding.
Compared with the prior art, the automatic welding method has the advantages that the bottom layer welding and the second layer welding are carried out on the annular seam, the automatic welding of the two sections of steel pipe columns is realized, the manual participation is reduced, the influence of the operation environment on the welding is reduced, the welding efficiency is improved, the horizontal distance compensation is carried out when the bottom layer is welded, the height compensation is carried out when the second layer is welded, and the welding quality is ensured. And the step of horizontal distance compensation is omitted during welding the second layer, so that the welding efficiency is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the construction of the circular seam of the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic view of the torch of the present invention in operation in a circumferential seam;
FIG. 6 is a schematic view showing a structure in which welding to the first welding surface is insufficient in the second layer welding of the present invention;
FIG. 7 is a schematic view of a weld hierarchy for a circumferential seam of the present invention;
FIG. 8 is a top view of the upper tubular string and the weld gun of the present invention;
FIG. 9 is a schematic structural view of a lower steel pipe column and a guide rail according to the present invention;
FIG. 10 is a schematic diagram of three datum points of the present invention;
FIG. 11 is a schematic view of a prior art circular seam construction.
Reference numerals are as follows:
1. the steel pipe comprises a lower steel pipe column, 11 parts of a first welding surface, 2 parts of an upper steel pipe column, 21 parts of a second welding surface, 3 parts of a guide rail, 4 parts of a welding gun, 5 parts of a welding wire, 6 parts of a horizontal moving mechanism, 7 parts of a laser sensor, 8 parts of an up-and-down swinging mechanism, 9 parts of a height moving mechanism, 100 parts of a circular seam, 200 parts of a bottom layer, 300 parts of a second layer, 400 parts of a third layer, 500 parts of a travelling mechanism and 600 parts of an initial reference point.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 3-4, in the embodiment, the outer contours of the lower steel pipe column 1 and the upper steel pipe column 2 are both cylindrical, the top end of the lower steel pipe column 1 is provided with a first welding surface 11, the bottom of the upper steel pipe column 2 is provided with a second welding surface 21, the first welding surface 11 is a plane, the second welding surface 21 is formed with an inclined surface, specifically, the first welding surface 11 is perpendicular to the axis of the lower steel pipe column 1, the second welding surface 21 of the upper steel pipe column 2 and the first welding surface 11 of the lower steel pipe column 1 form a transverse circumferential weld 100 with a certain depth, referring to fig. 11, the upper and lower grooves of the conventional circumferential weld 100 are inclined surfaces, the circumferential weld 100 to be welded in the invention, and the lower groove is a plane, so that about half of welding time and materials can be saved. The upper steel pipe column 2 is provided with a circular guide rail 3, and the automatic welding method comprises the following steps:
referring to fig. 7 and 10, the bottom layer 200 is welded: setting an initial reference point 600, enabling a welding gun 4 to obliquely extend into the circular seam 100, enabling an included angle between the welding gun 4 and the first welding surface 11 of the lower steel pipe column 1 to be an acute angle, enabling the welding gun 4 to swing up and down in the circular seam 100 by taking the initial reference point 600 as a starting point while advancing along the guide rail 3, and completing welding of the bottom layer 200 by a welding wire 5; when the welding gun 4 moves along the guide rail 3, the distance between the welding gun 4 and the lower steel pipe column 1 is kept consistent through the automatic distance compensation system, the distance is the distance between the welding gun 4 and the lower steel pipe column 1 in the horizontal direction, referring to the attached drawing 5, the distance between the welding gun 4 and the lower steel pipe column 1 is always K through the automatic distance compensation system, when the steel pipe column is prefabricated in a factory, the outer contour of the steel pipe column is not quite perfect, referring to the attached drawing 9, when the welding gun 4 moves on the guide rail 3, the distance between the welding gun 4 and the steel pipe column is large or small, the welding quality is affected, and therefore the automatic distance compensation system is needed, and the distance between the welding gun 4 and the steel pipe column is always consistent.
The second layer 300 is higher than the bottom layer 200, and thus is welded in two passes to ensure welding quality.
Welding the second layer 300: the welding gun 4 takes the initial reference point 600 as a starting point, moves outwards to reach a point a and then is set as a second reference point, the second reference point is lower than the initial reference point 600, the welding gun 4 takes the second reference point as a starting point, and swings up and down in the circular seam 100 to complete the first welding of the second layer 300 by the welding wire 5 while advancing along the guide rail 3; the welding gun 4 moves upwards by a distance c by taking the second reference point as a starting point, and the moving direction of the welding gun 4 is vertical to the first welding surface 11; then, the welding wire 5 is swung up and down in the circular seam 100 to complete second welding of the second layer 300 while the welding wire advances along the guide rail 3; during the welding process, referring to fig. 6, the second layer 300 is not welded to the lower steel pipe column 1 sufficiently, and the later workers find that the welding wire 5 in front of the welding gun 4 is shortened during the welding process, which causes the distance between the welding wire 5 in front of the welding gun 4 and the first welding surface 11 of the lower steel pipe column 1 to be increased. The welding gun 4 is thus made to perform a height compensation by moving it downwards so that it can be sufficiently welded to the lower steel pipe column 1.
It should be noted that during the welding of the second layer 300, the worker finds that the automatic distance compensation system is not working, and the welding quality of the second layer 300 is still maintained. Therefore, during the welding of the second layer 300 and the third layer 400, the work of the distance automatic compensation system is omitted, which further improves the welding efficiency of the steel pipe column.
If the circular seam 100 is large, the third layer 400 needs to be welded, and the third layer 400 is higher than the second layer 300, so that the welding is performed in three steps to ensure the welding quality.
It will of course be appreciated that depending on the size of the circumferential seam 100, we can also weld the fourth layer, the fifth layer, etc.
Specifically, the specific steps of moving outward to the point a from the initial reference point 600 are as follows: after the initial reference point 600 is used as a starting point and is translated outwards by a distance x in a direction parallel to the first welding surface 11, the initial reference point is further translated downwards by a distance z1 in a direction perpendicular to the first welding surface 11 to reach a point a, and the distance z1 can be set according to the length of the welding wire 5.
Specifically, the specific steps of moving outward to reach the point b with the second reference point as a starting point are as follows: the welding wire is outwards translated by a distance x along a direction parallel to the first welding surface 11 by taking the second reference point as a starting point, and then is downwards translated by a distance z2 along a direction vertical to the first welding surface 11 to reach a point b, wherein the distance z2 can be set according to the length of the welding wire 5.
Referring to fig. 1-2, the automatic distance compensation system includes a horizontal movement mechanism 6 and a laser sensor 7 connected to the horizontal movement mechanism 6, the laser sensor 7 is located right below the welding gun 4, specifically, in the height direction of the lower steel pipe column 1, the laser sensor 7 is located within a range of 100mm below the first welding surface, the initial distance between the laser sensor 7 and the surface of the lower steel pipe column 1 is m1, when the welding gun 4 advances along the guide rail 3, the real-time distance between the laser sensor 7 and the surface of the lower steel pipe column 1 is m2, and the horizontal movement mechanism 6 drives the welding gun 4 to perform horizontal movement compensation according to the difference between m2 and m1, so that the distance between the laser sensor 7 and the surface of the lower steel pipe column 1 is always m 1. For example, when m1 is larger than m2, the horizontal moving mechanism 6 drives the welding gun 4 to move outward by m1-m2 so as to ensure that the distance between the laser sensor 7 and the surface of the lower steel pipe column 1 is m 1; when m1 is smaller than m2, the horizontal moving mechanism 6 drives the welding gun 4 to move inward m2-m1, so that the distance between the laser sensor 7 and the surface of the lower steel pipe column 1 is m 1. Specifically, the horizontal movement mechanism 6 drives the welding gun 4 to perform horizontal movement compensation according to 120 mm/min.
The reason why the laser sensor 7 measures the distance from the steel pipe column 1 below with reference to the steel pipe column 1 is that: the first welding surface 11 of the lower steel pipe column 1 is a plane, and the welding gun 4 is convenient to reference when moving transversely and longitudinally.
In the present embodiment, the units of c, x, z1, z2, n, m1, m2 and K are all millimeters.
Specifically, in the horizontal projection, referring to fig. 8, an included angle between the welding gun 4 and the upper steel pipe column 2 is an acute angle, and further, when the upper steel pipe column 2 is located in front of the welding gun 4 and the gun head of the welding gun 4 is located on the right side of the gun tail, the welding gun 4 moves forward along the guide rail 3 in the clockwise direction.
The welding gun 4 is connected with an up-down swinging mechanism 8, and the up-down swinging mechanism 8 drives the welding gun 4 to swing up and down.
The horizontal moving mechanism 6 is connected with a height moving mechanism 9, the up-down swinging mechanism 8 is connected with the horizontal moving mechanism 6, and the height moving mechanism 9 drives the welding gun 4 to move along the height direction of the upper steel pipe column 2. For example, when welding the second course of the second floor 300, the welding torch 4 moves up by the distance c by the height moving mechanism 9.
The horizontal moving mechanism 6 and the height moving mechanism 9 move at the required position of the steel pipe column circular seam 100 according to the parameters set by the control system and feed back data, so that the functional requirement of the welding gun 4 for realizing multi-layer and multi-pass welding is met.
The height moving mechanism 9 is connected with a traveling mechanism 500, and the traveling mechanism 500 drives the welding gun 4 to move along the guide rail 3. The traveling mechanism 500 can realize forward and reverse rotation movement of the welding gun 4, the traveling speed and the start and stop of the welding gun 4 are controllable in the traveling process, and a control system of the welding gun 4 can set welding current, welding voltage, welding speed, swing width and frequency parameters when the welding gun 4 moves, so that multilayer and multi-pass welding of medium plates is realized, and the welding efficiency is improved.
A horizontal manual moving mechanism and a height manual moving mechanism are connected between the up-down swinging mechanism 8 and the horizontal moving mechanism 6, and the welding gun 4 can be subjected to position fine adjustment through the horizontal manual moving mechanism and the height manual moving mechanism before initial welding. When each section of steel pipe column is welded, the outer contour of the steel pipe column is different, so that the distance between welding guns needs to be manually adjusted before welding is started so as to eliminate errors.
The guide rail 3 is formed by splicing at least two arc-section rails, and the guide rail 3 and the upper steel pipe column 2 are fixed through an electromagnet. Specifically, 4-8 arc section tracks are provided, two adjacent arc section tracks are fixed through a fixing seat, and the fixing seat is fixed on the outer wall of the upper steel pipe column 2 through an electromagnet.
According to the invention, the bottom layer 200 and the second layer 300 are welded on the circular seam 100, so that automatic welding of two sections of steel pipe columns is realized, manual participation is reduced, the influence of a working environment on welding is reduced, the welding efficiency is improved, and the welding quality is ensured by performing horizontal distance compensation during welding the bottom layer 200 and performing height compensation during welding the second layer 300 and the third layer 400. The horizontal distance compensation step is omitted in welding the second layer 300 and the third layer 400, further improving the welding efficiency.
The invention establishes an automatic welding process parameter library of standardized steel pipe column plates with various specifications through standardizing guide rails with different diameters of steel pipe columns commonly used in building construction, and forms a whole set of automatic welding method for vertical butt welding of steel pipe columns.
The vertical butt joint of the steel pipe columns with the same plate thickness and diameter variation can be realized, and welding is carried out by replacing guide rails with different diameters and calling the same welding parameter library; the vertical butt joint of the steel pipe columns with the same diameter and the same plate thickness can be realized, and the welding is carried out by calling a welding parameter library of the required plate thickness under the condition of not replacing the guide rail.
The invention can greatly improve the construction efficiency and the stability of quality of the vertical butt welding of the steel pipe columns on site in the project in the field of building construction, save the cost, shorten the construction period and reduce the difficulty of high-altitude welding construction.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (12)
1. The automatic welding method for vertical butt joint of the steel pipe columns is characterized in that a first welding surface is arranged at the top end of a lower steel pipe column, a second welding surface is arranged at the bottom of an upper steel pipe column, the first welding surface is a plane, an inclined plane is formed on the second welding surface, the second welding surface of the upper steel pipe column and the first welding surface of the lower steel pipe column form a circular seam, a circular guide rail is mounted on the upper steel pipe column, and the automatic welding method for vertical butt joint of the steel pipe columns comprises the following steps:
bottom layer welding: setting an initial reference point, wherein a welding gun obliquely extends into the circular seam, an included angle between the welding gun and a first welding surface of the lower steel pipe column is an acute angle, and the welding gun takes the initial reference point as a starting point, and swings up and down in the circular seam to complete bottom layer welding by a welding wire while advancing along the guide rail; when the welding gun advances along the guide rail, the distance between the welding gun and the lower steel pipe column is kept consistent through an automatic distance compensation system;
and (3) second layer welding: the welding gun takes the first reference point as a starting point, moves outwards to reach a point a and then is set as a second reference point, the second reference point is lower than the first reference point, and the welding gun swings up and down in a circular seam to complete first welding of a second layer by a welding wire while advancing along the guide rail by taking the second reference point as the starting point; and the welding gun moves upwards by a distance c by taking the second reference point as a starting point, then swings up and down in the circular seam while advancing along the guide rail, and finishes second welding of a second layer by using a welding wire.
2. The automatic welding method for vertical butt joint of the steel pipe column according to claim 1, further comprising the following steps of welding a third layer: the welding gun takes the third reference point as a starting point, swings up and down in the circular seam while advancing along the guide rail and finishes the first welding of the third layer by using a welding wire; the welding gun moves upwards for a distance c by taking the third reference point as a starting point, then moves forwards along the guide rail, and swings up and down in the circular seam to complete the second welding of a third layer by using a welding wire; and the welding gun moves upwards for 2 distances c by taking the third reference point as a starting point, then moves forwards along the guide rail, and swings up and down in the circular seam to complete third welding of a third layer by using a welding wire.
3. The automatic vertical butt welding method for the steel pipe column according to claim 2, wherein the step of moving outward to the point a from the initial reference point comprises the following steps: after the initial reference point is used as a starting point and is translated outwards by a distance x in a direction parallel to the first welding surface, the initial reference point is translated downwards by a distance z1 in a direction perpendicular to the first welding surface to reach a point a.
4. The automatic vertical butt welding method for the steel pipe column according to claim 3, wherein the step of moving outward to the point b from the second reference point comprises the following steps: after the second reference point is taken as a starting point and is translated outwards by the distance x in the direction parallel to the first welding surface, the second reference point is translated downwards by the distance z2 in the direction perpendicular to the first welding surface to reach the point a.
5. The automatic vertical butt welding method for the steel pipe column according to claim 3, wherein the automatic distance compensation system comprises a horizontal moving mechanism and a laser sensor, the laser sensor measures that the initial distance between the laser sensor and the surface of the lower steel pipe column is m1, the laser sensor measures that the real-time distance between the laser sensor and the surface of the lower steel pipe column is m2 when the welding gun advances along the guide rail, and the horizontal moving mechanism drives the welding gun to perform horizontal movement compensation according to the difference between m2 and m1, so that the distance between the laser sensor and the lower steel pipe column is always m 1.
6. The automatic vertical butt welding method for the steel pipe column according to claim 5, wherein an included angle between the welding gun and the upper steel pipe column is an acute angle in a horizontal projection.
7. The automatic vertical butt welding method for the steel pipe column according to claim 6, wherein when the upper steel pipe column is positioned in front of a welding gun and a gun head of the welding gun is positioned on the right side of a gun tail, the welding gun advances along a guide rail in a clockwise direction.
8. The automatic vertical butt welding method for the steel pipe column according to claim 7, wherein the welding gun is connected with an up-and-down swinging mechanism, and the up-and-down swinging mechanism drives the welding gun to swing up and down.
9. The automatic vertical butt welding method for the steel pipe column according to claim 8, wherein the horizontal moving mechanism is connected with a height moving mechanism, the up-and-down swinging mechanism is connected with the horizontal moving mechanism, and the height moving mechanism drives a welding gun to move along the height direction of the upper steel pipe column.
10. The automatic vertical butt welding method for the steel pipe column according to claim 9, wherein the height moving mechanism is connected with a traveling mechanism, and the traveling mechanism drives a welding gun to move along a rapid guide rail.
11. The automatic vertical butt welding method for the steel pipe column according to claim 1, wherein the guide rail is formed by splicing at least two arc-section rails, and the guide rail and the upper steel pipe column are fixed through an electromagnet.
12. The automatic vertical butt welding method for the steel pipe column according to claim 10, wherein a horizontal manual moving mechanism and a height manual moving mechanism are connected between the vertical swinging mechanism and the horizontal moving mechanism, and the welding gun can be subjected to fine position adjustment through the horizontal manual moving mechanism and the height manual moving mechanism before initial welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210703373.XA CN114769792B (en) | 2022-06-21 | 2022-06-21 | Automatic welding method for vertical butt joint of steel pipe columns |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210703373.XA CN114769792B (en) | 2022-06-21 | 2022-06-21 | Automatic welding method for vertical butt joint of steel pipe columns |
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| CN114769792A true CN114769792A (en) | 2022-07-22 |
| CN114769792B CN114769792B (en) | 2022-10-28 |
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| CN202210703373.XA Active CN114769792B (en) | 2022-06-21 | 2022-06-21 | Automatic welding method for vertical butt joint of steel pipe columns |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3890482A (en) * | 1970-03-24 | 1975-06-17 | Gurtler Hebert & Co Inc | Apparatus for welding together substantially vertically extending pipe sections |
| US20170157693A1 (en) * | 2015-12-07 | 2017-06-08 | Illinois Tool Works Inc. | Systems and methods for automated root pass welding |
| CN107378203A (en) * | 2017-07-03 | 2017-11-24 | 中国华冶科工集团有限公司 | The welding method of box column |
| CN108608097A (en) * | 2018-06-28 | 2018-10-02 | 中国华冶科工集团有限公司 | A kind of vertical weld bond one side welding with back formation welding method of common downcomer heavy wall |
| CN109664006A (en) * | 2019-01-31 | 2019-04-23 | 点夺机电工程江苏有限公司 | A kind of welding equipment of straight tube butt welding |
| CN111843270A (en) * | 2020-08-16 | 2020-10-30 | 桂林航天工业学院 | Vertical pipeline automatic welder |
-
2022
- 2022-06-21 CN CN202210703373.XA patent/CN114769792B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3890482A (en) * | 1970-03-24 | 1975-06-17 | Gurtler Hebert & Co Inc | Apparatus for welding together substantially vertically extending pipe sections |
| US20170157693A1 (en) * | 2015-12-07 | 2017-06-08 | Illinois Tool Works Inc. | Systems and methods for automated root pass welding |
| CN107378203A (en) * | 2017-07-03 | 2017-11-24 | 中国华冶科工集团有限公司 | The welding method of box column |
| CN108608097A (en) * | 2018-06-28 | 2018-10-02 | 中国华冶科工集团有限公司 | A kind of vertical weld bond one side welding with back formation welding method of common downcomer heavy wall |
| CN109664006A (en) * | 2019-01-31 | 2019-04-23 | 点夺机电工程江苏有限公司 | A kind of welding equipment of straight tube butt welding |
| CN111843270A (en) * | 2020-08-16 | 2020-10-30 | 桂林航天工业学院 | Vertical pipeline automatic welder |
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| CN114769792B (en) | 2022-10-28 |
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