A thin-walled structural member welding deformation control tool

Abstract

The present application relates to a kind of thin-walled structural member welding deformation control tooling, it includes: underframe;Longitudinal deformation prevention mechanism, it is spaced apart along the length direction of the underframe, the longitudinal deformation prevention mechanism includes the first pad for supporting body and the first pressing device for pressing the body;Transverse deformation prevention mechanism, it is spaced apart along the width direction of the underframe, the transverse deformation prevention mechanism includes the second pad for supporting the body and the second pressing device for pressing the body;And edge deformation prevention mechanism, it includes the pressing channel steel extending along the length direction of the underframe, the pressing channel steel is used to be spot-welded with the body fixed.In the body welding is completed, without by correction, overall is relatively flat, reduce the wave deformation in the body transverse, longitudinal two directions and the wave deformation on the body edge, can be conveniently, reliably equipped with body welding, production efficiency is high, quality is stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding, in particular to a thin-walled structural member welding deformation control tool. BACKGROUND

[0002] At present, thin-walled structural members are prone to welding deformation due to the action of uneven temperature field during welding. In related technologies, the welding deformation control method is as follows: when welding the body, first place a 7.5-meter-long thin plate on the platform, press the four edges of the thin plate, and then assemble and weld other components on the thin-walled plate. After welding, the body presents three kinds of deformation: bending deformation in the length direction and the width direction, and wave deformation on the thin-walled edge. For the bending deformation in the length and width directions, the mechanical correction method can be adopted, and for the wave deformation, the hammer correction + point welding fixation method is adopted to control during product assembly.

[0003] However, this method has large correction workload, high labor intensity, low efficiency, unstable quality, and cannot meet the batch production requirements. SUMMARY

[0004] The embodiments of the present application provide a thin-walled structural member welding deformation control tool to solve the problem of large workload, high labor intensity, low efficiency, unstable quality, and inability to meet batch production requirements in related technologies.

[0005] In a first aspect, a thin-walled structural member welding deformation control tool is provided, which includes: a chassis; a longitudinal anti-deformation mechanism arranged at intervals along the length direction of the chassis, the longitudinal anti-deformation mechanism including first pads for supporting the body and first pressing devices for pressing the body; a transverse anti-deformation mechanism arranged at intervals along the width direction of the chassis, the transverse anti-deformation mechanism including second pads for supporting the body and second pressing devices for pressing the body; and an edge anti-deformation mechanism including a pressing channel steel extending along the length direction of the chassis, the pressing channel steel being used for point welding fixation with the body.

[0006] In some embodiments, the first pad has at least three, one of which is arranged in the middle of the chassis, and the other two are symmetrically arranged on both sides of the first pad in the middle, and the top surface height of the first pad on both sides is lower than that of the first pad in the middle.

[0007] In some embodiments, the first pressing device has at least four, two of which are arranged on both sides of the first pad in the middle, and the other two are arranged on the side of the first pad on both sides away from the first pad in the middle.

[0008] In some embodiments, the second pads are arranged along a longitudinal center line of the base frame, and the second pressing device is symmetrically arranged on both sides of the second pads.

[0009] In some embodiments, the first pads are arranged along a longitudinal center line of the base frame, and the first pads are fixed on the second pads.

[0010] In some embodiments, the first pressing device comprises at least two bases fixed on opposite sides of the base frame along the length direction, and a pressing rod arranged on the two bases at both ends thereof and extending along the width direction of the base frame.

[0011] In some embodiments, the first pressing device further comprises a first pressing plate mounted on the base through a first screw rod, and the first pressing plate is located above the pressing rod.

[0012] In some embodiments, the second pressing device comprises a base fixed on the base frame, and a second pressing plate arranged on the base, wherein a second screw rod is mounted on the second pressing plate, and a lower end of the second screw rod is welded on the base frame.

[0013] In some embodiments, the second pressing plate is located above the pressing channel steel, and the second pressing plate can press the body through the pressing channel steel.

[0014] In some embodiments, the base frame comprises a reference plate, a trunnion fixed on the reference plate, and a trunnion sleeve fixed on the trunnion through a bolt.

[0015] The technical scheme provided by the present application has the following beneficial effects:

[0016] The embodiment of the present application provides a thin-walled structural member welding deformation control tool, which utilizes a longitudinal deformation prevention mechanism to inhibit deformation in the length direction of the structural member, utilizes a transverse deformation prevention mechanism to inhibit deformation in the width direction of the structural member, and utilizes an edge deformation prevention mechanism to inhibit wave deformation on the thin-walled edge of the structural member. After the body is welded, no correction is needed, the whole body is relatively flat, wave deformation in the transverse and longitudinal directions of the body and wave deformation on the edge of the body are reduced, the body can be conveniently and reliably welded, production efficiency is high, quality is stable, and the welding size requirement of the final product can be guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 A schematic diagram of the overall structure of a thin-walled structural member welding deformation control tool provided by the embodiment of the present application is shown in the figure.

[0019] Figure 2 A schematic diagram of the use state of a thin-walled structural member welding deformation control tool provided by the embodiment of the present application is shown in the figure.

[0020] Figure 3 A schematic diagram of the structure of a chassis provided by the embodiment of the present application is shown in the figure.

[0021] Figure 4 A schematic diagram of the structure of a first pressing device provided by the embodiment of the present application is shown in the figure.

[0022] Figure 5 A schematic diagram of the structure of a second pressing device provided by the embodiment of the present application is shown in the figure.

[0023] Figure 6 A schematic diagram of the use state of a second pad provided by the embodiment of the present application is shown in the figure.

[0024] Figure 7 A schematic diagram of the use state of a first pad provided by the embodiment of the present application is shown in the figure.

[0025] Figure 8 A schematic diagram of the structure of a body provided by the embodiment of the present application is shown in the figure.

[0026] Figure label:

[0027] 1, chassis; 2, first pressing device; 3, second pressing device; 4, pressing channel steel; 5, second pad; 6, first pad; 7, trunnion; 8, trunnion sleeve; 9, rectangular tube framework; 10, reference plate; 11, first screw; 12, first nut; 13, first pressing plate; 14, base; 15, lifting ring; 16, pressing rod; 17, second pressing plate; 18, second screw; 19, second nut; 20, base; 21, body. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] The embodiment of the present invention provides a thin-walled structural component welding deformation control tool, which can solve the problems of the welding deformation control method in the related art, such as large workload, high labor intensity, low efficiency, unstable quality, and inability to meet batch production requirements.

[0030] See also Figure 1 and Figure 8 As shown, a thin-walled structural member welding deformation control tool provided by an embodiment of the present invention may include: a base frame 1; a longitudinal anti-deformation mechanism, which is arranged at intervals along the length direction of the base frame 1, and the longitudinal anti-deformation mechanism includes a first pad 6 for supporting the main body 21 and a first clamping device 2 for pressing the main body 21; a transverse anti-deformation mechanism, which is arranged at intervals along the width direction of the base frame 1, and the transverse anti-deformation mechanism includes a second pad 5 for supporting the main body 21 and a second clamping device 3 for pressing the main body 21; and an edge anti-deformation mechanism, which includes a clamping channel steel 4 extending along the length direction of the base frame 1, and the clamping channel steel 4 is used to be spot-welded and fixed to the main body 21.

[0031] In this embodiment, the base frame 1 is placed at the bottom of the welding deformation tooling as a reference, the second clamping device 3 and the first clamping device 2 are both fixed to the base frame 1 by welding, the second pad 5 is fixed to the base frame 1 by countersunk screws, and the first pad 6 does not need to be fixed. After the main body is pre-assembled, it can be placed in the middle and fixed. The first clamping device 2 and the first pad 6 can compress and support the structural member in the length direction, thereby suppressing the deformation of the structural member in the length direction. The second clamping device 3 and the second pad 5 can compress and support the structural member in the width direction, thereby suppressing the deformation of the structural member in the width direction. The clamping channel steel 4 can be spot welded to the main body 21, thereby suppressing the wave deformation on the thin-walled edge of the structural member. After the main body 21 is welded, no correction is required, and the overall shape is relatively flat, reducing the deformation of the main body 21 in the transverse and longitudinal directions and the wave deformation on the edge of the main body 21. The main body 21 can be conveniently and reliably welded, with high production efficiency and stable quality, and can ensure that the welding size requirements of the final product are met.

[0032] Specifically, the welding sequence is:

[0033] S1. Control transverse bending deformation. Figure 6 As shown, the main body 21 is laid on the tooling, and a 5mm thick second pad 5 is placed in the middle of the tooling. Both sides of the main body 21 are pressed by the second pressing device 3, which can play a role in lateral anti-deformation after the middle rib is welded.

[0034] S2, control edge wave deformation. Figure 6 As shown, after the middle rib is welded, the compression channel steel 4 and the body 21 are spot-welded along the length direction to strengthen the rigidity of the edge of the body 21 and prevent the edge from wave deformation.

[0035] S3, control longitudinal bending deformation. Referring to Figure 7 As shown in the figure, after the inner rib plate welding is completed, the outer sealing plate is pre-welded, the first cushion block 6 is placed under the body 21, the middle cushion block with a height of 30 mm is placed at the center position of the entire workpiece, the two side cushion blocks with a height of 15 mm are placed at a position 1 meter away from the middle block, and then the entire product is pressed by the first pressing device 2, which plays a role of arching in the middle and sinking on both sides. After the four longitudinal long straight welds are welded, the longitudinal reverse deformation effect can be achieved.

[0036] Referring to Figure 1 and Figure 7 As shown in the figure, in some embodiments, the first cushion block 6 has at least three blocks, one of which is arranged in the middle of the chassis 1, and the other two are symmetrically arranged on both sides of the first cushion block 6 in the middle, and the top surface height of the first cushion block 6 on both sides is lower than that of the first cushion block 6 in the middle. In this embodiment, according to the deformation law of the body 21 along the longitudinal direction, the deformation amount of the middle part is greater than that of the two ends. By arranging three first cushion blocks 6 under the body 21, and making the higher first cushion block 6 support the middle part of the body 21, and the lower first cushion block 6 support the two ends of the body 21, and the position and size of the first cushion block 6 can be adjusted according to the size of the deformation amount, so as to specifically inhibit the deformation of different degrees of each position of the body 21, and the anti-deformation effect is better. In other embodiments, the first cushion block 6 can also be arranged in other quantities as needed, which can be less than 3 or more than 3.

[0037] Referring to Figure 1 and Figure 7 As shown in the figure, in some embodiments, the first pressing device 2 can have at least four, two of which are arranged on both sides of the first cushion block 6 in the middle, and the other two are arranged on the side away from the first cushion block 6 in the middle. In this embodiment, the first cushion block 6 in the middle supports the middle part of the body 21, the two first pressing devices 2 close to the middle part hold the two sides of the middle part of the body 21, the first cushion block 6 at the two ends supports the two ends of the body 21, and the first pressing device 2 at the two ends holds the two ends of the body 21. By arranging the first cushion block 6 and the first pressing device 2 alternately, there is a first cushion block 6 between every two first pressing devices 2, and there is a first pressing device 2 between every two first cushion blocks 6, so that the force distribution of the longitudinal anti-deformation mechanism along the length direction of the body 21 is more symmetrical, the force is more uniform, and the deformation inhibition effect is better. In other embodiments, the first pressing device 2 can also be arranged in other quantities as needed, which can be less than 4 or more than 4.

[0038] Further, the spacing between the two middle first pressing devices 2 is greater than the spacing between the two middle first pressing devices 2 and the two side first pressing devices 2, which is more in line with the deformation rule of the body 21, that is, the middle part of the body 21 deforms more than the two ends, and the anti-deformation effect is better.

[0039] Referring to Figure 1 In some embodiments, the second cushion block 5 can be arranged along the longitudinal center line of the chassis 1, and the second pressing device 3 is symmetrically arranged on both sides of the second cushion block 5. In this embodiment, according to the transverse deformation rule of the body 21, the second cushion block 5 is arranged in the middle of the body 21 to support the middle part of the body 21, so as to inhibit the middle part of the body 21 from deforming concave, and the second pressing device 3 is arranged on both sides of the body 21 to press the two sides of the body 21, so as to inhibit the two sides of the body 21 from deforming convex.

[0040] Referring to Figure 1 In some embodiments, the first cushion block 6 can be arranged along the longitudinal center line of the chassis 1, and the first cushion block 6 is fixed on the second cushion block 5. In this embodiment, the first cushion block 6 is arranged along the longitudinal center line of the body 21 to support the bottom of the body 21, so that the force of the first cushion block 6 on the body 21 is more uniform and symmetrical in the transverse direction, and the anti-deformation effect is better. The first cushion block 6 can be directly placed on the second cushion block 5 or fixed on the second cushion block 5, which is convenient for adjusting the position of the first cushion block 6. After adjustment according to needs, the deformation of the body 21 at different positions can be inhibited in different degrees.

[0041] Referring to Figure 4 In some embodiments, the first pressing device 2 can include at least two bases 14 fixed on opposite sides of the chassis 1 in the length direction, and a pressing rod 16 arranged on the two bases 14 at both ends. The pressing rod 16 extends in the width direction of the chassis 1. In this embodiment, the base 14 is provided with a groove, and the pressing rod 16 is placed in the groove. The pressing rod 16 presses the body 21 in the width direction of the body 21, so that the force on the body 21 is more uniform.

[0042] Referring to Figure 4 Further, the first pressing device 2 can further include a first pressing plate 13 mounted on the base 14 by a first screw rod 11. The first pressing plate 13 is located above the pressing rod 16. In this embodiment, the first pressing plate 13 is clamped on the pressing rod 16 to press the body 21, and the first screw rod 11 is screwed in the base 14. When the first nut 12 is tightened, the product can be fixed, and the adjustment is convenient.

[0043] Referring to Figure 5As shown, in some embodiments, the second pressing device 3 can include a base 20 fixed to the chassis 1, a second pressing plate 17 arranged on the base 20, a second screw rod 18 mounted on the second pressing plate 17, and a lower end of the second screw rod 18 welded to the chassis 1. In this embodiment, the second pressing plate 17 is located on both sides of the chassis 1 and used to press the body 21. A second nut 19 is assembled on the second screw rod 18, and the bottom of the second screw rod 18 is welded to the chassis 1. By tightening the second nut 19, the product can be fixed, and the adjustment is convenient.

[0044] Referring to Figure 6 As shown, in some embodiments, the second pressing plate 17 can be located above the pressing channel steel 4, and the second pressing plate 17 can press the body 21 through the pressing channel steel 4. In this embodiment, the pressing channel steel 4 is spot-welded to the body 21 to prevent edge wave deformation. The second pressing plate 17 presses the body 21 through the pressing channel steel 4 to prevent lateral deformation. Since the pressing channel steel 4 extends along the length direction of the body 21, the pressing force exerted by the second pressing plate 17 on the body 21 is more uniform, and the anti-deformation effect is better.

[0045] Referring to Figure 3 As shown, in some embodiments, the chassis 1 can include a reference plate 10, a trunnion 7 fixed to the reference plate 10, and a trunnion sleeve 8 fixed to the trunnion 7 by bolts. In this embodiment, the trunnion sleeve 8 is fixed to the trunnion 7 by bolts, the trunnion 7 is directly welded and fixed to a rectangular tube framework 9, the reference plate 10 is directly welded to the rectangular tube framework 9, and the whole is processed by a gantry boring and milling to ensure that the overall flatness is within 1 mm. The reference plate 10 serves as the positioning reference for the whole tooling and is welded and fixed to the chassis 1. The chassis 1 can place the whole device on a large positioner through the trunnion sleeve 8 for overturning.

[0046] During assembly, the second pad 5 is first screwed to the middle position of the chassis 1, and then the first pressing device 2 and the second pressing device 3 are welded and fixed to the chassis 1. The pressing plate is unscrewed by a wrench, the bottom plate of the body is laid on the chassis 1, and the center of the bottom plate coincides with the center of the chassis 1. Then the two longitudinal edges of the bottom plate are pressed by the pressing channel steel 4, and the bottom plate is fixed by the second pressing device 3. After the pre-welding of the thin-walled structure is completed, the pressing channel steel 4 is spot-welded to the bottom plate, the second pressing devices 3 on both sides are loosened, the body 21 is lifted, the first pad 6 is placed in the middle position of the body 21, then the first pressing device 2 is pressed, the bottom plate of the body is pressed against the chassis 1 by the second pressing device 3, and then welding is performed. After welding is completed, the first pressing device 2 and the second pressing device 3 are loosened, the pressing channel steel 4 is connected to the body 21 for tempering and correction, and then the body 21 is polished after the assembly is completed.

[0047] The principle of the thin-wall structural member welding deformation control tool provided by the embodiment of the present application is as follows:

[0048] According to the deformation law, three first pads 6 are added in the middle of the body for longitudinal bending deformation, and the first pressing device 2 is used to implement reverse deformation; for transverse bending deformation, the second pad 5 is placed on the middle of the chassis 1 during welding, the thickness of the second pad 5 is consistent with the reverse deformation amount, and the second pressing device 3 is used to implement reverse deformation; for the longitudinal edge, because it belongs to a thin-wall structural member, the thin plate edge has poor rigidity and is unconstrained, and after welding, the thin plate edge freely shrinks and deforms to produce wave deformation, so after the pre-welding of the body is completed, the pressing channel steel 4 is spot-welded with the bottom plate to rigidly fix the thin plate edge, the internal stress of the plate generated after being heated during welding is smaller than the rigid constraint force of the channel steel, and the plate will not deform freely, and the internal residual stress of the body can be eliminated when the body is tempered. After the body is welded to other components, the pressing channel steel 4 can be removed, and the body 21 will not produce wave deformation.

[0049] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] It should be noted that in the present application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0051] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the scope of the application is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalents are intended to be embraced therein.

Claims

1. A thin-walled structural member welding distortion control tooling characterized by, It comprises: a chassis (1); a longitudinal anti-deformation mechanism, which is arranged along the length direction of the chassis (1), and comprises first pads (6) for supporting the body (21) and first pressing devices (2) for pressing the body (21); a transverse anti-deformation mechanism, which is arranged along the width direction of the chassis (1), and comprises second pads (5) for supporting the body (21) and second pressing devices (3) for pressing the body (21); and an edge anti-deformation mechanism, which comprises a pressing channel steel (4) extending along the length direction of the chassis (1), and is used for spot welding with the body (21); the first pads (6) are at least three, one of which is arranged in the middle of the chassis (1), and the other two are symmetrically arranged on both sides of the first pad (6) in the middle, and the top surface height of the first pads (6) on both sides is lower than that of the first pad (6) in the middle; the first pressing devices (2) are at least four, two of which are arranged on both sides of the first pad (6) in the middle respectively, and the other two are arranged on the side away from the first pad (6) in the middle of the first pad (6) on both sides respectively; the second pads (5) are arranged along the longitudinal center line of the chassis (1), and the second pressing devices (3) are symmetrically arranged on both sides of the second pads (5); the first pads (6) are arranged along the longitudinal center line of the chassis (1), and are fixed on the second pads (5); the first pressing devices (2) comprise at least two bases (14) fixed on the opposite sides of the chassis (1) along the length direction respectively; a pressing rod (16) arranged on the two bases (14) respectively, which extends along the width direction of the chassis (1); the first pressing devices (2) further comprise a first pressing plate (13) installed on the base (14) through a first screw rod (11), which is located above the pressing rod (16); the second pressing devices (3) comprise a base (20) fixed on the chassis (1); a second pressing plate (17) arranged on the base (20), on which a second screw rod (18) is installed, and the lower end of the second screw rod (18) is welded on the chassis (1); the second pressing plate (17) is located above the pressing channel steel (4), and the second pressing plate (17) can press the body (21) through the pressing channel steel (4).

2. The thin-walled structural member welding distortion control fixture of Claim 1 wherein, The chassis (1) comprises: a reference plate (10); a trunnion (7) fixed on the reference plate (10); a trunnion sleeve (8) fixed on the trunnion (7) through a bolt.

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