A welding tooling for large girders

Abstract

A large plate girder welding tooling, comprising a V-shaped welding part, a horizontal welding part and a traveling crane arranged above both of them. The V-shaped welding part includes a stirrup with a horizontal top and a V-shaped support device arranged on the top of the stirrup; the horizontal welding part includes a stirrup with a horizontal top and more than two support piece assembling devices arranged on the same side of the stirrup. A horizontal support is arranged between adjacent stirrups of the horizontal welding part. The support piece assembling device includes a base arranged on a transverse movement device and an upper clamping part and a lower clamping part sequentially arranged on the side wall of the base from top to bottom. The upper clamping part is arranged on the side wall of the base through a vertical movement device. The upper clamping part drives the upper assembling piece to move downwards, and after being combined with the lower assembling piece on the lower clamping part, a C-shaped support assembly for the wing plate of the large plate girder is formed. This large plate girder welding tooling has the advantages of low energy consumption, simple operation, good turnover and support effect, small weld deformation and high quality.

Description

Technical Field

[0001] The present invention relates to a welding tool for large plate girders, and particularly to a flipping welding tool for H-shaped large plate girders, belonging to the technical field of welding tools for H-shaped workpieces. Background Art

[0002] Large plate girders are the most important load-bearing components in the steel structure of thermal power boilers, which are formed by welding steel plates and are generally H-shaped. During the welding and assembly process, the plates need to be lifted, flipped, and positioned after flipping multiple times.

[0003] In the existing welding and assembly process, a traveling crane is required. For example, the hook shown in the Chinese utility model patent "Authorization Publication Number: CN206219061U; Authorization Publication Date: June 6, 2017; Title: Large Plate Girder Arc Flipping Device", the V-groove welding position shown in the Chinese utility model patent "Authorization Publication Number: CN206216193U; Authorization Publication Date: June 6, 2017; Title: Device for Changing the V-groove Welding Position of Boiler Large Plate Girder", and the C-shaped support for supporting the lower wing plate.

[0004] During use, first, a combination of a traveling crane and a hook is used to place the web and wing plates in the V-groove welding position to weld the main weld between the web and wing plates. Then, a combination of a traveling crane, a hook, and a C-shaped support is used to flip the large plate girder to weld stiffener plates on the front and back sides of the large plate girder. This welding and assembly solution has the following defects: 1. The V-groove welding position is set separately. After welding one wing plate, the welded web and wing plates need to be flipped 180 degrees as a whole, and the flipping difficulty is relatively large. 2. The C-shaped support is fixed. Before flipping the large plate girder, workers need to manually install the C-shaped support at both ends of the wing plate of the large plate girder, which is not only time-consuming and laborious, but also can only be installed at both ends of the wing plate. The C-shaped supports at both ends have limited supporting ability for the large plate girder, and it is easy to cause cracking of the main weld due to the downward deformation in the middle of the wing plate. Summary of the Invention

[0005] The purpose of the present invention is to address the above technical defects in the existing large plate girder welding and assembly technology. A welding tool for large plate girders is provided. This welding tool for large plate girders is equipped with a V-groove welding part and a horizontal welding part, shortening the distance between the two working positions, and having the advantages of low energy consumption and high processing efficiency; the V-groove welding part only needs to flip the web by 45° to weld the wing plates on both sides of the web, having the advantages of small flipping angle and simple flipping operation; the horizontal welding part is equipped with a plurality of C-shaped support component assembly devices, and the plurality of C-shaped support component assembly devices can automatically assemble the C-shaped support components at various positions of the wing plate, having the advantages of convenient assembly of C-shaped support components, good support effect, and high welding quality.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A large plate beam welding tooling, comprising a V-groove welding part, a horizontal welding part and a traveling crane arranged above the two. The V-groove welding part includes a stirrup with a horizontal top and a V-shaped support device arranged on the top of the stirrup; the horizontal welding part includes a stirrup with a horizontal top and more than two support piece assembling devices arranged on the same side of the stirrup. A horizontal support is arranged between adjacent stirrups of the horizontal welding part. The support piece assembling device includes a base arranged on a transverse movement device and an upper clamping part and a lower clamping part sequentially arranged on the side wall of the base from top to bottom. The upper clamping part is arranged on the side wall of the base through a vertical movement device. The upper clamping part drives the upper assembling piece to move downwards and is combined with the lower assembling piece on the lower clamping part to form a C-shaped support assembly for the wing plate of the large plate beam. After the C-shaped support assembly is clamped on the vertical wing plate, the large plate beam is flipped under the action of the traveling crane above. When the large plate beam is horizontally placed on the stirrup, the flat sections at both ends of the back of the C-shaped support assembly abut against the upper surface of the horizontal support. When the large plate beam forms an angle with the stirrup, the arc-shaped curved surface section on the back of the C-shaped support assembly abuts against the upper surface of the horizontal support, and at this time the large plate beam does not contact the stirrup.

[0008] By adopting the above technical solution, a large plate beam welding tooling is provided. The large plate beam welding tooling is provided with a V-groove welding part and a horizontal welding part, shortening the distance between the two working positions, and having the advantages of low energy consumption and high processing efficiency; the horizontal welding part is provided with a plurality of C-shaped support assembly assembling devices, and the plurality of C-shaped support assembly assembling devices can automatically realize the assembly of the C-shaped support assemblies at various places of the wing plate, and have the advantages of convenient assembly of the C-shaped support assemblies, good support effect and high welding quality.

[0009] The further setting of the present invention is that: a smooth arc-shaped curved surface is adopted for smooth transition between the flat section and the arc-shaped curved surface section on the back of the C-shaped support assembly.

[0010] By adopting the above technical solution, a smooth arc-shaped curved surface is used to connect the flat section and the arc-shaped curved surface section on the back of the C-shaped support assembly, which can effectively ensure the smooth flipping of the large plate beam.

[0011] The further setting of the present invention is that: corresponding fitting parts are arranged between the upper assembling piece and the lower assembling piece, and jacks for arranging pins are correspondingly arranged at the fitting parts of the upper assembling piece and the lower assembling piece.

[0012] By adopting the above technical solution, pins for fixing the two are arranged at the fitting parts of the upper assembling piece and the lower assembling piece. In the actual use process, workers can manually disassemble and assemble the pins, or a locking device for automatically disassembling and assembling the pins can be arranged on the support piece assembling device.

[0013] The further setting of the present invention is that: at least three support piece assembling devices are arranged on the outer side of the stirrup of the horizontal welding part, two support piece assembling devices are located at both ends of the wing plate, and one support piece assembling device is located in the middle of the wing plate.

[0014] By adopting the above technical solution, three support member assembling devices are used to support the wing plate, which can effectively support each part of the wing plate, and can effectively avoid the defect of poor welding quality caused by the cracking of the weld seam during flipping due to the difficulty of assembling the support member in the middle of the wing plate in the prior art.

[0015] A further setting of the present invention is that: on both sides of the ship-shaped welding part, a ship-shaped support device is respectively arranged, and on the outer side of each ship-shaped support device, a submerged arc welding device is arranged.

[0016] A further setting of the present invention is that: the two ship-shaped support devices are symmetrically arranged.

[0017] By adopting the above technical solution, two ship-shaped support devices are symmetrically arranged on both sides of the ship-shaped welding part. During use, the welding of the right wing plate can be realized on the right ship-shaped support device first, and then the web plate and the welded wing plate are flipped 45° to the left together, and the welding of the left wing plate is realized on the left ship-shaped support device. When welding the main weld seam between the web plate and the two wing plates at 45°, only the web plate needs to be flipped 45°. This solution has the advantages of small flipping angle, convenient operation and low energy consumption.

[0018] A further setting of the present invention is that: the ship-shaped support device includes a main support member and an auxiliary support member. On the side of the auxiliary support member close to the main support member, a support inclined plane for the wing plate of the large plate beam parallel to the main support member is arranged, and a support seat for the web plate of the large plate beam is arranged on the main support member.

[0019] A further setting of the present invention is that: the support seat includes a base and a support plate, and the support plate is hinged to the base by a rotating shaft.

[0020] A further setting of the present invention is that: the main support member includes two support rods and a support cross beam arranged between the two support rods, and the support seat is arranged on the support cross beam.

[0021] A further setting of the present invention is that: short support rods are respectively arranged at the upper ends of the two support rods, a top cross beam is arranged between the two short support rods, and a support seat is also arranged on the top cross beam.

[0022] By adopting the above technical solution, the specific structure of the ship-shaped support device is defined.

[0023] The main beneficial effects of the present invention are:

[0024] 1. The large plate girder welding tooling of the present invention is equipped with a V-groove welding part and a horizontal welding part, which shortens the distance between the two working positions, and has the advantages of low energy consumption and high processing efficiency; the horizontal welding part is equipped with a plurality of C-shaped support component assembly devices, and the plurality of C-shaped support component assembly devices can automatically assemble the C-shaped support components at various parts of the wing plate, and has the advantages of convenient assembly of the C-shaped support components, good support effect and high welding quality.

[0025] 2. The large plate girder welding tooling of the present invention uses a smooth arc-shaped curved surface to connect the flat section and the arc-shaped curved surface section on the back of the C-shaped support component, which can effectively ensure the smooth flipping of the large plate girder.

[0026] 3. The large plate girder welding tooling of the present invention uses three support component assembly devices to support the wing plate, which can effectively support various parts of the wing plate, and can effectively avoid the defect of poor welding quality caused by the difficulty of assembling the support components in the middle of the wing plate and the cracking of the weld seam during flipping in the prior art.

[0027] 4. The large plate girder welding tooling of the present invention symmetrically arranges two V-groove support devices on both sides of the V-groove welding part. During use, the welding of the right wing plate can be realized on the right V-groove support device first, and then the web and the welded wing plate are flipped 45° to the left together, and the welding of the left wing plate is realized on the left V-groove support device. When welding the main weld seam between the web and the two wing plates at 45°, only the web needs to be flipped 45°, which has the advantages of small flipping angle, convenient operation and low energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 is the schematic structural diagram of the whole of the present invention;

[0030] Figure 2 is the schematic structural diagram of the V-groove support device in the present invention;

[0031] Figure 3 Figure 2 The schematic structural diagram of the main support in the A direction in;

[0032] Figure 4 is the schematic top view structural diagram of the support component assembly device in the present invention;

[0033] Figure 5 is the schematic structural diagram of the cooperation between the support component assembly device, the C-shaped support component and the large plate girder in the present invention;

[0034] Figure 6 It is a front structural schematic diagram of the support assembly device in the present invention;

[0035] Figure 7 It is a back structural schematic diagram of the C-shaped support assembly in the present invention.

[0036] In the figure, Ⅰ, boat-shaped welding part; Ⅱ, horizontal welding part; 1, stirrup; 11, horizontal support; 2, boat-shaped support device; 211, support rod; 212, short support rod; 22, auxiliary support; 23, strengthening connecting rod; 24, support seat; 25, support cross beam; 26, top cross beam; 3, support assembly device; 31, transverse movement device; 32, base; 33, vertical movement device; 34, upper clamping part; 35, lower clamping part; 41, web; 42, flange; 5, C-shaped support assembly; 51, upper splicing part; 52, lower splicing part; 53, pin. Specific embodiments

[0037] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0038] Embodiment 1:

[0039] As Figures 1 to 7 shown, a large plate beam welding tooling includes a boat-shaped welding part Ⅰ, a horizontal welding part Ⅱ, and a traveling crane arranged above the two. The boat-shaped welding part Ⅰ includes a stirrup 1 with a horizontal top and a boat-shaped support device 2 arranged on the top of the stirrup 1.

[0040] One boat-shaped support device 2 is arranged on each side of the boat-shaped welding part Ⅰ, and the two boat-shaped support devices 2 are symmetrically arranged. An automatic submerged arc welding device is provided on the outside of each boat-shaped support device 2. The boat-shaped support device 2 includes a main support and an auxiliary support 22. A 45-degree support inclined plane for the flange 42 of the large plate beam 4 is arranged on the side of the auxiliary support 22 close to the main support and parallel to the main support. A support seat 24 for the web 41 of the large plate beam 4 is arranged on the main support. The support seat 24 includes a base and a support plate, and the support plate is hinged to the base by a rotating shaft. The main support includes two support rods 211 and a support cross beam 25 arranged between the two support rods 211, and the support seat 24 is arranged on the support cross beam 25. Short support rods 212 are respectively arranged at the upper ends of the two support rods 211, a top cross beam 26 is arranged between the two short support rods 212, and a support seat 24 is also arranged on the top cross beam 26.

[0041] The horizontal welding part II includes the stirrup 1 with a horizontal top and more than two support piece assembling devices 3 arranged on the same side of the stirrup 1. A horizontal support 11 is arranged between two adjacent stirrups 1 of the horizontal welding part II. The support piece assembling device 3 includes a base body 32 arranged on a transverse movement device 31 and an upper clamping part 34 and a lower clamping part 35 sequentially arranged on the side wall of the base body 32 from top to bottom. The upper clamping part 34 is arranged on the side wall of the base body 32 through a vertical movement device 33. The upper clamping part 34 drives the upper splicing piece 51 to move downward and is combined with the lower splicing piece 52 on the lower clamping part 35 to form a C-shaped support assembly 5 for the web plate 42 of the large plate beam. After the C-shaped support assembly 5 is clamped on the vertical web plate 42, the large plate beam 4 is flipped under the action of the overhead crane above. When the large plate beam 4 is horizontally placed on the stirrup 1, the flat sections 54 at both ends of the back of the C-shaped support assembly 5 abut against the upper surface of the horizontal support 11. When the large plate beam 4 forms an angle with the stirrup 1, the arc-shaped curved surface section 55 on the back of the C-shaped support assembly 5 abuts against the upper surface of the horizontal support 11, and at this time, the large plate beam 4 does not contact the stirrup 1. A smooth arc-shaped curved surface is used for smooth transition between the flat section 54 and the arc-shaped curved surface section 55 on the back of the C-shaped support assembly 5. Corresponding fitting parts are arranged between the upper splicing piece 51 and the lower splicing piece 52, and jacks for arranging the insertion pin 53 are correspondingly arranged on the fitting parts of the upper splicing piece 51 and the lower splicing piece 52. At least three support piece assembling devices 3 are arranged on the outer side of the stirrup 1 of the horizontal welding part II. Two support piece assembling devices 3 are located at both ends of the web plate 42, and one support piece assembling device 3 is located in the middle of the web plate 42.

[0042] Principle of use:

[0043] A combination of an overhead crane and a hook is adopted. First, the web plate 41 and the web plate 42 are assembled on the right-side ship-shaped support device 2, and then the main weld between the right-side web plate 42 and the web plate 41 is welded by using the provided submerged arc welding. Then, the web plate 41 and the welded web plate 42 are flipped 45° to the left together, and the welding of the left-side web plate 42 is realized on the left-side ship-shaped support device 2, and the welding of the main welds between the web plate 41 and the two web plates 42 is completed.

[0044] Use a traveling crane to move the large plate girder 4 above the horizontal welding part II, adjust the large plate girder 4 to a horizontal placement state, place the large plate girder 4 on the stirrup 1, and make the lower edge of the wing plate 42 on the right side of the large plate girder 4 snap into the card slot of the lower splicing part 52 (previously, the lower splicing part 52 was clamped and fixed by the lower clamping part 35, the upper splicing part 51 was clamped and fixed on the upper clamping part 34, and the upper clamping part 34 was driven by the vertical moving device 33 to move upward, so that the upper splicing part 51 and the lower splicing part 52 were in a separated vertical moving state). The vertical moving device 33 drives the upper splicing part 51 to move downward and fit with the lower splicing part 52, and then manually insert the pin 53 to realize the fixation after the upper splicing part 51 and the lower splicing part 52 are fitted. The upper clamping part 34 and the lower clamping part 35 simultaneously release the clamping and fixation of the upper splicing part 51 and the lower splicing part 52, and the upper clamping part 34 and the lower clamping part 35 move outward under the action of the transverse moving device 31 to create enough space for the flipping of the C-shaped support assembly 5. Finally, use the combination of a traveling crane and a hook to realize the flipping of the large plate girder 4. During the flipping process, the C-shaped support assembly 5 can effectively ensure that the wing plate 42 and the stirrup 1 are not in contact, which can avoid the direct contact between the wing plate 42 and the stirrup 1 causing extrusion, and further causing situations such as the main weld cracking.

Claims

1. A large plate girder welding tooling, characterized in that: It includes a boat-shaped welding part (Ⅰ), a horizontal welding part (Ⅱ), and a traveling crane arranged above both of them. The boat-shaped welding part (Ⅰ) includes a stirrup (1) with a horizontal top and a boat-shaped support device (2) arranged on the top of the stirrup (1); the horizontal welding part (Ⅱ) includes a stirrup (1) with a horizontal top and more than two support piece assembling devices (3) arranged on the same side of the stirrup (1). A horizontal support (11) is arranged between adjacent stirrups (1) of the horizontal welding part (Ⅱ). The support piece assembling device (3) includes a base body (32) arranged on a transverse movement device (31), and an upper clamping part (34) and a lower clamping part (35) sequentially arranged on the side wall of the base body (32) from top to bottom. The upper clamping part (34) is arranged on the side wall of the base body (32) through a vertical movement device (33). The upper clamping part (34) drives the upper assembling piece (51) to move downward, and after being combined with the lower assembling piece (52) on the lower clamping part (35), a C-shaped support assembly (5) for the wing plate (42) of the large plate beam is formed; after the C-shaped support assembly (5) is clamped on the vertical wing plate (42), the large plate beam (4) is flipped under the action of the traveling crane above. When the large plate beam (4) is horizontally placed on the stirrup (1), the flat sections (54) at both ends of the back of the C-shaped support assembly (5) abut against the upper surface of the horizontal support (11). When the large plate beam (4) forms an angle with the stirrup (1), the arc-shaped curved surface section (55) on the back of the C-shaped support assembly (5) abuts against the upper surface of the horizontal support (11), and at this time, the large plate beam (4) does not contact the stirrup (1).

2. The welding tooling for large girders according to claim 1, characterized in that: A smooth arc-shaped curved surface is used for smooth transition between the flat section (54) and the arc-shaped curved surface section (55) on the back of the C-shaped support assembly (5).

3. The large plate girder welding tooling according to claim 2, characterized in that: Corresponding fitting parts are arranged between the upper assembling piece (51) and the lower assembling piece (52), and jacks for arranging pins (53) are correspondingly arranged on the fitting parts of the upper assembling piece (51) and the lower assembling piece (52).

4. The welding tooling for large girders according to claim 3, characterized in that: At least three support piece assembling devices (3) are arranged on the outer side of the stirrup (1) of the horizontal welding part (Ⅱ). Two support piece assembling devices (3) are located at both ends of the wing plate (42), and one support piece assembling device (3) is located in the middle of the wing plate (42).

5. The welding tooling for large girders according to claim 1, wherein: One boat-shaped support device (2) is arranged on each side of the boat-shaped welding part (Ⅰ), and a submerged arc welding device is arranged on the outer side of each boat-shaped support device (2).

6. The welding tooling for large girders according to claim 5, characterized in that: The two boat-shaped support devices (2) are symmetrically arranged.

7. The welding tooling for large girders according to claim 6, wherein: The boat-shaped support device (2) includes a main support piece and an auxiliary support piece (22). A 45-degree support inclined plane parallel to the main support piece and aiming at the wing plate (42) of the large plate beam (4) is arranged on the side of the auxiliary support piece (22) close to the main support piece. A support seat (24) aiming at the web (41) of the large plate beam (4) is arranged on the main support piece.

8. A large plate girder welding tooling according to claim 7, characterized in that: The support seat (24) includes a base and a support plate, and the support plate is hinged to the base by a rotating shaft.

9. The welding tooling for large girders according to claim 8, characterized in that: The main support member described above includes two support rods (211) and a support cross beam (25) arranged between the two support rods (211), and a support seat (24) is arranged on the support cross beam (25).

10. A large plate girder welding tooling according to claim 9, characterized in that: Short support rods (212) are respectively arranged at the upper ends of the two support rods (211), a top cross beam (26) is arranged between the two short support rods (212), and a support seat (24) is also arranged on the top cross beam (26).

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