CN113182655A - Submerged arc welding support frame and erection method thereof - Google Patents
Submerged arc welding support frame and erection method thereof Download PDFInfo
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- CN113182655A CN113182655A CN202110521493.3A CN202110521493A CN113182655A CN 113182655 A CN113182655 A CN 113182655A CN 202110521493 A CN202110521493 A CN 202110521493A CN 113182655 A CN113182655 A CN 113182655A
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- 238000003466 welding Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 25
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- 238000009434 installation Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 34
- 239000010959 steel Substances 0.000 abstract description 34
- 230000009194 climbing Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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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
- B23K9/32—Accessories
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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Abstract
The invention discloses a submerged-arc welding support frame and a building method thereof, relates to the technical field of constructional engineering steel structures, and aims to provide the submerged-arc welding support frame suitable for large-section H-shaped steel beams with unequal widths of upper flange plates and lower flange plates. The invention adopts the technical scheme that the submerged arc welding support frame comprises at least two jig frame units which are arranged side by side, each jig frame unit comprises a platform beam, two stand columns are arranged on the platform beam, a workbench is arranged between the two stand columns, triangular support frames formed by inner inclined struts, outer struts and the platform beam are respectively arranged on two sides of the workbench, web plate support positions are formed at the upper ends of the outer struts, and the triangular support frames are axisymmetric relative to the center line of the workbench; and a bottom support is arranged between the upright post and the inner inclined support, a movable support is arranged on any one bottom support, and the two bottom supports are respectively vertical to the inner inclined support and form flange supporting surfaces. The upper flange plate and the lower flange plate with different widths of the H-shaped steel beam can be respectively placed on different flange supporting surfaces and then welded. The invention is suitable for submerged arc welding of the large-section H-shaped steel beam.
Description
Technical Field
The invention relates to the technical field of constructional engineering steel structures, in particular to a support frame for submerged arc welding and a building method of the support frame.
Background
The submerged arc welding has high welding efficiency, attractive appearance of a welding seam and good working environment, and is a common steel structure welding mode. When the cantilever type or gate type submerged arc welding is used for welding the T-shaped welding seam of the H-shaped steel, the position of a welding gun is required to be adjusted for the H-shaped steel with different sections, and the welding wire is aligned to the root of the welding seam.
Patent application with publication number CN 110539120A discloses a preparation welding H shaped steel adjustable bed-jig and method, including a plurality of bed-jig units of arranging side by side, the bed-jig unit includes L type support, L type support is 90L type structure and opening up, the angular bisector of L type support is vertical, L type support below is equipped with the landing leg, still be equipped with two climbing mechanisms on the L type support, a right angle limit sliding connection of two climbing mechanisms and L type support, two climbing mechanisms all are perpendicular with this right angle limit. The adjustable jig frame enables the welded H-shaped steel to be inclined at 45 degrees with the horizontal ground when being assembled through the jig frame body and the movable support, and ship-shaped position welding of submerged arc welding can be carried out after the assembly, so that the assembly and welding processes are completed on the same jig frame. The technology is suitable for the condition that the general H-shaped steel with a small section or the upper and lower flanges are equal in width, and low production efficiency can be caused due to poor adaptability of the H-shaped steel with a large section and the H-shaped steel with the unequal width of the upper and lower flanges.
Disclosure of Invention
The invention provides a submerged-arc welding support frame suitable for large-section H-shaped steel beams with unequal widths of upper and lower flange plates.
The technical scheme adopted by the invention for solving the technical problems is as follows: the submerged arc welding support frame comprises at least two jig frame units arranged side by side, each jig frame unit comprises a platform beam, two stand columns are arranged on each platform beam, a workbench is arranged between the two stand columns, inner inclined struts are arranged on the side, back to the workbench, of each stand column, the upper ends of the inner inclined struts are connected with outer struts, web plate supporting positions are formed at the upper ends of the outer struts, the lower ends of the outer struts are fixed on the platform beams, triangular support frames are formed by the inner inclined struts, the outer struts and the platform beams, and the triangular support frames on the two sides of the workbench are axisymmetric with respect to the center line of the; and a bottom support is arranged between each of the two upright posts and the inner inclined support at one side back to the workbench, the two bottom supports are respectively vertical to the inner inclined supports connected with the two bottom supports to form flange supporting surfaces, and a movable support is arranged on any one bottom support.
Further, the method comprises the following steps: the installation height of the flange supporting surface of the movable support on the bottom support can be adjusted.
Further, the method comprises the following steps: the bottom support of the movable support is provided with a plurality of positioning holes along the height direction on the flange supporting surface, and the movable support is arranged in the positioning holes.
Specifically, the method comprises the following steps: the bottom support is provided with two rows of positioning holes along the height direction on the flange supporting surface, each row comprises two positioning holes, the distance between every two adjacent positioning holes in the same row is 80mm, and the movable support is installed in the positioning holes through bolts.
Further, the method comprises the following steps: the platform beam is respectively provided with stiffening plates at the positions of connecting the inner inclined strut, the outer strut and the upright post, and the bottom of the platform beam is provided with foundation bolt mounting holes.
Further, the method comprises the following steps: the included angle between the inner inclined strut and the platform beam is 45 degrees.
Further, the method comprises the following steps: the triangular support frame is in the shape of an acute triangle, and the included angle between the outer support and the platform beam is 75 degrees.
Further, the method comprises the following steps: the interval of bed-jig unit is 3 ~ 4m, and the height of two stands equals, sets up the tie-beam between two stands and forms the workstation, and the height ratio stand of the height of workstation is low 100 mm.
The submerged arc welding support frame has the advantages that: the upper flange plate and the lower flange plate with unequal widths of the H-shaped steel beams can be respectively placed on different flange supporting surfaces and then welded, so that the welding requirement can be quickly and conveniently met, the production efficiency is improved, and the welding method is particularly suitable for the condition that the upper flange plate and the lower flange plate in the large-section H-shaped steel beams are unequal in width. The submerged arc welding support frame is simple in structure, easy to manufacture and install, simple and flexible in adjusting process and convenient to operate.
The movable support is adjustable in mounting height of the flange supporting surface, and is adaptable to H-shaped steel beams with different widths of the upper flange plate and the lower flange plate. The triangular support frame is in an acute triangle shape, and is high in stability and reasonable in structure. The connecting beam is erected between the two stand columns to form a workbench, so that welding construction is facilitated, and the stability of the two stand columns can be enhanced.
The invention also provides a method for erecting any one of the submerged arc welding support frames, which is used for erecting the submerged arc welding support frame, and the method comprises the following steps of firstly fixing the platform beam on a foundation and leveling the platform beam; then, erecting an upright post and a triangular support frame on the platform beam; then erecting a bottom support; and finally, installing a movable support.
Specifically, the method comprises the following steps: the platform roof beam is fixed in the basis through rag bolt, and the junction full weld of triangular supports frame is connected, and the sill brace full weld is between stand and interior bracing.
The method for erecting the submerged arc welding support frame has the beneficial effects that: the submerged-arc welding support frame is simple in erection process and low in difficulty, and facilitates submerged-arc welding of the large-section H-shaped steel beam.
Drawings
FIG. 1 is a schematic structural diagram of a jig frame unit of the submerged arc welding support frame of the invention.
Fig. 2 is a schematic view of the connection relationship between the bottom support and the movable support on the right side in fig. 1.
Reference numerals: the device comprises a platform beam 1, a stiffening plate 11, an upright post 2, a workbench 3, an inner inclined strut 4, an outer strut 5, a web plate supporting position 51, a bottom strut 6, a positioning hole 61, a movable strut 7 and a foundation 8; h-shaped steel beam 9.
Detailed Description
The invention will be further explained with reference to the drawings.
The submerged arc welding support frame comprises at least two jig frame units which are arranged side by side, and the jig frame units are arranged side by side along a straight line. Because the H-shaped steel beam is longer and the cross section area is large, in order to avoid the deformation of the H-shaped steel beam, the jig frame units are arranged at intervals of 3-4 m, so that the H-shaped steel beam cannot deform before welding on the submerged arc welding support frame. The individual jig frame units are explained in detail below.
As shown in fig. 1, the jig frame unit includes a platform beam 1, the platform beam 1 is preferably made of a steel structural member, the platform beam 1 is provided with two upright posts 2, the upright posts 2 are also preferably made of a steel structural member and perpendicular to the platform beam 1, the two upright posts 2 are identical, and the lower ends of the upright posts 2 are fixedly connected to the platform beam 1, for example, fixed to the platform beam 1 by bolts or welding. A workbench 3 is arranged between the two upright posts 2. The workbench 3 can be formed by the platform beam 1 between the upright posts 2, a connecting beam can be arranged between the upright posts 2 and forms the workbench 3, the connecting beam is convenient for submerged arc welding construction, the tendency that the two upright posts 2 incline to the workbench 3 can be transferred and offset, and the stability of the two upright posts 2 is enhanced. The mounting height of the workbench 3 needs to avoid influencing the flanging of the H-shaped steel beam 9, and is convenient for construction, for example, the height of the workbench 3 is 100mm lower than that of the upright post 2. The platform beam 1 is connected with the inner inclined strut 4, the outer strut 5 and the upright post 2 and is in a stress concentration position, and in order to improve the strength of the platform beam 1 and avoid deformation, the platform beam 1 is respectively provided with stiffening plates 11 at the positions where the inner inclined strut 4, the outer strut 5 and the upright post 2 are connected. The platform beam 1 needs to be fixed on the ground, for example, on a specific foundation structure, and in order to facilitate the fixing, the bottom of the platform beam 1 is provided with foundation bolt mounting holes, so that the platform beam 1 can be fixedly mounted through the foundation bolts.
The stand 2 sets up interior bracing 4 in one side back to workstation 3, bracing 4 in the outside of workstation 3 is set up to stand 2 promptly, and the outer 5 that props is connected to the upper end of interior bracing 4, and the upper end of outer 5 that props forms web support position 51, and the lower extreme of outer 5 that props is fixed in platform roof beam 1, and interior bracing 4, outer 5 and platform roof beam 1 form the triangular supports frame, and the triangular supports frame of workstation 3 both sides is line axis symmetry about the center of workstation 3, as shown in fig. 1. The inner inclined strut 4, the outer strut 5 and the platform beam 1 can be welded and connected, and all welding is full welding in order to ensure the use safety; or all sides of the triangular support frame are connected through bolts. The included angle between the inner inclined strut 4 and the platform beam 1 is preferably 45 degrees, and when the platform beam 1 is horizontal, the inner inclined strut 4 and the horizontal plane form 45 degrees. The outer bracing 5 is not only used for connecting and supporting the upper end of the inner bracing 4, but also forms a web supporting position 51. The triangular support frame can be a right triangle, an acute triangle or an acute triangle, but is preferably in the shape of an acute triangle, and the included angle between the outer support 5 and the platform beam 1 is 75 degrees, so that the material is saved and the structure is stable. The distance between the web support locations 51 and the inner struts 4, which may be considered as a point-to-line distance, is determined by the width of the flange plate of the H-section steel beam 9, preferably half the width of the relatively wide flange plate.
Two columns 2 are respectively provided with a bottom support 6 between the inner inclined support 4 at one side back to the workbench 3, the two bottom supports 6 are respectively vertical to the inner inclined support 4 connected with the two bottom supports and form flange supporting surfaces, the flange supporting surfaces are also two correspondingly, and the flange supporting surfaces are used for supporting flange plates of the H-shaped steel beam 9. In any one of the two bottom supports 6, a movable support 7 is mounted on the bottom support 6, for example, in fig. 1, the movable support 7 is mounted on the bottom support 6 on the right side. The purpose of the mobile brace 7 is to accommodate the relatively narrow flange plate of the H-beam 9.
In order to adapt to flange plates with different widths, the installation height of the movable support 7 on the flange supporting surface of the bottom support 6 can be adjusted. The position of the movable support 7 on the bottom support 6 can be adjusted according to the height of the H-shaped steel beam 9 and the width of the flange plate, so that the requirement of welding the H-shaped steel beam 9 at an angle of 45 degrees is met. For example, the bottom stay 6 on which the movable stay 7 is mounted is provided with a slide groove in the height direction, that is, in the length direction, along which the movable stay 7 can be moved and locked. Alternatively, referring to fig. 2, the bottom brace 6 for mounting the movable brace 7 is provided with a plurality of positioning holes 61 in the height direction on the flange supporting surface, and the movable brace 7 can be mounted in the positioning holes 61 at different positions. For example, two rows of positioning holes 61 are formed in the flange supporting surface of the bottom brace 6 in the height direction, each row includes two positioning holes 61, two rows of six positioning holes 61 are formed, the distance between two adjacent positioning holes 61 in the same row is 80mm, that is, the row distance between the positioning holes 61 is 80mm, and the movable brace 7 is mounted in the positioning holes 61 by four high-strength bolts.
The second subject of the invention is a submerged arc welding support frame building method, which is used for building the submerged arc welding support frame. The building method of the submerged arc welding support frame comprises the steps of firstly, fixing a platform beam 1 on a foundation 8, leveling the platform beam 1, wherein the foundation 8 can be of a reinforced concrete structure, and leveling the top surface of the foundation 8 and embedding foundation bolts, such as M20 foundation bolts; when the platform beam 1 is leveled, the leveller is used for measuring the planeness, and the elevation difference is ensured to be less than 5 mm. Then, set up stand 2 and triangular supports on platform roof beam 1, stand 2 is vertical arranges, guarantees that its straightness deviation that hangs down is less than 3mm, and the gradient of triangular supports is less than 2 mm. And then a bottom support 6 is erected, and the bottom support 6 is fully welded between the upright post 2 and the inner inclined support 4. Finally, the movable support 7 is installed, and the movable support 7 can also be installed on the bottom support 6 in advance.
As shown in figure 1, the H-shaped steel beams 9 are long and have large sections, the turning is difficult during welding, the jig frame unit is W-shaped, and the H-shaped steel beams 9 can be welded on two sides of each H-shaped steel beam in a forward-backward cross symmetry mode. The submerged arc welding support frame is used for carrying out positive and negative cross symmetric welding on the single H-shaped steel beam 9, so that large welding deformation caused by heat concentration can be avoided. The submerged arc welding support frame can flexibly adjust the welding angle of a workpiece to be welded so as to form reasonable ship-shaped welding, better ensure the formation of a welding seam, ensure the welding angle of a main welding seam to be within a process requirement range and ensure the welding deformation of the H-shaped steel 9 to be within a pre-control range.
Claims (10)
1. Submerged arc welding support frame includes at least two bed-jig units of arranging side by side, its characterized in that: the jig frame unit comprises a platform beam (1), two stand columns (2) are arranged on the platform beam (1), a workbench (3) is arranged between the two stand columns (2), inner inclined struts (4) are arranged on one sides of the stand columns (2) back to the workbench (3), outer struts (5) are connected to the upper ends of the inner inclined struts (4), web plate supporting positions (51) are formed at the upper ends of the outer struts (5), the lower ends of the outer struts (5) are fixed to the platform beam (1), triangular support frames are formed by the inner inclined struts (4), the outer struts (5) and the platform beam (1), and the triangular support frames on the two sides of the workbench (3) are axisymmetric with respect to the center line of the workbench (3); two columns (2) are respectively provided with a bottom support (6) between the inner inclined support (4) on one side back to the workbench (3), the two bottom supports (6) are respectively vertical to the inner inclined support (4) connected with the bottom supports to form flange supporting surfaces, and a movable support (7) is arranged on any one bottom support (6).
2. The submerged arc welding support frame of claim 1, characterized in that: the installation height of the movable support (7) on the flange supporting surface of the bottom support (6) can be adjusted.
3. The submerged arc welding support frame of claim 2, characterized in that: a plurality of positioning holes (61) are formed in the flange supporting surface of the bottom support (6) provided with the movable support (7) along the height direction, and the movable support (7) is arranged in the positioning holes (61).
4. The submerged arc welding support frame of claim 3, characterized in that: the bottom support (6) is provided with two rows of positioning holes (61) in the height direction of the flange supporting surface, each row comprises two positioning holes (61), the distance between every two adjacent positioning holes (61) in the same row is 80mm, and the movable support (7) is installed in the positioning holes (61) through bolts.
5. A submerged arc welding support frame as claimed in any one of claims 1 to 4, characterized in that: the platform beam (1) is respectively provided with a stiffening plate (11) at the positions of connecting the inner inclined strut (4), the outer strut (5) and the upright post (2), and the bottom of the platform beam (1) is provided with foundation bolt mounting holes.
6. A submerged arc welding support frame as claimed in any one of claims 1 to 4, characterized in that: the included angle between the inner inclined strut (4) and the platform beam (1) is 45 degrees.
7. The submerged arc welding support frame of claim 6, characterized in that: the triangular support frame is in the shape of an acute triangle, and the included angle between the outer support (5) and the platform beam (1) is 75 degrees.
8. A submerged arc welding support frame as claimed in any one of claims 1 to 4, characterized in that: the interval of bed-jig unit is 3 ~ 4m, and the height of two stands (2) equals, sets up the tie-beam between two stands (2) and forms workstation (3), and the height ratio stand (2) of workstation (3) highly hangs down 100 mm.
9. The method for erecting the submerged arc welding support frame is characterized by comprising the following steps: a submerged arc welding support frame for building according to any of the claims 1-8, first fixing the platform beam (1) on the foundation (8) and leveling the platform beam (1); then, erecting an upright post (2) and a triangular support frame on the platform beam (1); then a bottom support (6) is set up; finally, a movable support (7) is installed.
10. The submerged arc welding support frame setting method of claim 9, characterized by: the platform beam (1) is fixed on a foundation (8) through foundation bolts, the joint of the triangular support frame is in full-weld connection, and the bottom support (6) is in full-weld connection between the upright post (2) and the inner inclined support (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110521493.3A CN113182655A (en) | 2021-05-13 | 2021-05-13 | Submerged arc welding support frame and erection method thereof |
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| CN202110521493.3A CN113182655A (en) | 2021-05-13 | 2021-05-13 | Submerged arc welding support frame and erection method thereof |
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| CN114799428A (en) * | 2022-03-23 | 2022-07-29 | 浙江易农金属制品有限公司 | Processing equipment and processing method for H-shaped steel member |
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Application publication date: 20210730 |