Welding auxiliary device

Abstract

The invention belongs to the technical field of welding, and discloses a welding auxiliary device which comprises a tool beam mechanism, an edge supporting mechanism and a middle supporting mechanism, the tool beam mechanism comprises a beam body, a first supporting frame and a first locking assembly, the distance between the two opposite sides of the beam body is gradually reduced from the middle to the two ends, and the first supporting frame is used for supporting an edge beam; the first locking assembly is used for locking the edge beam on the beam body, the edge supporting mechanism comprises a rotary positioner, a second supporting frame and a second locking assembly, the second supporting frame is arranged on the rotary positioner and used for supporting the beam body, and the second locking assembly is used for locking the beam body on the second supporting frame. The middle supporting mechanism comprises a support, a supporting disc and a third locking assembly, the supporting disc is rotationally arranged on the support and provided with a mounting opening, and the third locking assembly is used for locking the edge beam to the beam body. The device can effectively inhibit the adverse effect of the device on the welding deformation of the boundary beam, reduces the deformation of the boundary beam, and improves the welding quality and the production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a welding auxiliary device. Background Art

[0002] The locomotive chassis side beam is a key component of the carbon steel chassis steel structure, and its welding quality directly affects the strength and rigidity of the chassis. Figures 1 to 3 As shown, the side beam 4 is mainly welded by the side plate 41 and the groove plate 42, and a hanging tube 43 penetrating the side plate 41 and the groove plate 42 is also provided at a certain position. Specifically, the cross section of the groove plate 42 is a U-shaped groove, and the outer sides of the two side portions 421 of the groove plate 42 are each processed with a full-length groove with a blunt edge, and the groove can be up to 18 meters long. The welds with the largest welding volume in the side beam 4 are the two groove welds, so their welding quality has the greatest impact on the quality of the final product of the side beam 4. At present, the side beam 4 is very prone to quality problems such as distortion after welding and cooling, and the later flame correction is difficult and inefficient, and is not widely recommended for use.

[0003] In actual operation, in order to prevent the deformation of the side beam after welding, some welding auxiliary devices applied to the side beam have been developed in the prior art. Figures 4 to 5 As shown, a welding auxiliary device of the prior art includes a tooling beam 1', a plurality of anti-deformation blocks 11' arranged on the tooling beam 1', a rotary reducer 2' and a clamping mechanism 3'. Due to the existence of welding shrinkage, the side beam 4 will produce bending deformation toward the side of the side plate 41 after welding, so it is necessary to prefabricate the anti-deformation in advance, and the side beam 4 that is not completely welded is hoisted and placed on the tooling beam 1', with the side plate 41 facing the side where the tooling beam 1' is located, and the groove plate 42 is facing away from the side where the tooling beam 1' is located. The plurality of anti-deformation blocks 11' are arranged at intervals along the length direction of the tooling beam 1', that is, the extension direction of the side plate 41, and the height of the plurality of anti-deformation blocks 11' decreases successively from both ends to the middle, that is, the line connecting the highest support points of all the anti-deformation blocks 11' is a concave arc. The side plate 41 is supported on a plurality of anti-deformation blocks 11', and the outer side plate 41 is brought into contact with all the anti-deformation blocks 11' through the clamping mechanism 3', and finally formed. Figure 4 The concave state shown in . Then, welding work is carried out, and two rotary positioners are connected to the two ends of the tooling beam 1'. The rotary positioners drive the tooling beam 1' to rotate, which can drive the side beam 4 fixed on the tooling beam 1' to change the angle, so that the two groove welds on the side beam 4 are adjusted to the welding position accordingly, which is convenient for subsequent welding operations.

[0004] However, since the tooling beam 1' is long and has a large weight, it will deform due to its own gravity no matter what angle it is rotated to. In addition, since the anti-deformation block 11' is equivalent to being clamped between the tooling beam 1' and the side beam 4, the tooling beam 1' will also be subjected to a force that produces bending deformation. The above factors will cause the side beam 4 to produce unpredictable shrinkage deformation, and the deformation law is not easy to grasp, and the deformation trend is unpredictable, resulting in a large amount of flame correction and difficulty in operation, which is not easy for mass production. In addition, flame correction will also affect the strength of the finished side beam 4 and destroy the reliability and stability of the finished side beam 4. At the same time, after the welding of a single side beam is completed, the anti-deformation state must be maintained on the tooling beam 1' for a long time to cool down, and the welding work of the next side beam cannot be carried out. Summary of the invention

[0005] The purpose of the present invention is to provide a welding auxiliary device, which can not only prefabricate the anti-deformation of the side beam when fixing it, but also effectively suppress the adverse effects of the device itself on the welding deformation of the side beam, reduce the deformation of the side beam and the amount of flame correction, and improve the welding quality and production efficiency.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A welding auxiliary device is used for installing the side beam of a locomotive chassis, wherein the side beam comprises a side plate and a groove plate, and the two side portions of the groove plate are welded to the side plate. The welding auxiliary device comprises a tooling beam mechanism, an edge support mechanism and an intermediate support mechanism; wherein:

[0008] The tooling beam mechanism comprises a beam body, a first support frame and a first locking assembly, wherein the beam body extends along a first direction, and two opposite sides of the beam body along a second direction are respectively used to abut against the groove plates of the two side beams, and the spacing between the two opposite sides of the beam body along the second direction gradually decreases from the middle to both ends, the first support frame is arranged in pairs at the opposite ends of the beam body along the first direction, and is used to support the corresponding ends of the side beam, and the first locking assembly is used to lock the side beam to the beam body;

[0009] The edge support mechanism is provided with two at intervals along the first direction, and the two edge support mechanisms are arranged one by one corresponding to the two opposite ends of the beam body, and the edge support mechanism includes a rotary positioner, a second support frame and a second locking assembly, the second support frame is provided on the rotary disk of the rotary positioner, and is used to support the corresponding end of the beam body, and the second locking assembly is used to lock the beam body on the second support frame;

[0010] The intermediate support mechanism includes a support, a support disc and a third locking assembly. The support disc is rotatably mounted on the support. The support disc has an installation opening. The beam body on which the side beam is mounted passes through the installation opening and is supported on the installation opening. The third locking assembly is used to lock the side beam to the beam body and to lock the beam body to the support disc.

[0011] Preferably, the beam body comprises two beam side plates, at least one anti-deformation plate, at least one web plate and a plurality of rib plates; wherein,

[0012] The beam side plates and the anti-deformation plates are both extended in the first direction, all the anti-deformation plates are located between two beam side plates, the beam side plates and the anti-deformation plates are both arranged in parallel and spaced apart in the third direction, and the spacing between the beam side plates and the anti-deformation plates on two sides opposite to each other in the second direction is gradually reduced from the middle to both ends;

[0013] The web plate extends along a first direction, the web plate is located between two of the beam side plates, the web plate passes through all of the anti-deformation plates, and the web plate is fixedly connected to the beam side plates and the anti-deformation plates;

[0014] The rib plate is connected between two adjacent anti-deformation plates and / or between the anti-deformation plate and the adjacent corresponding beam side plates.

[0015] Preferably, the first support frame is provided with a support groove for supporting the corresponding end of the side beam, and the first locking assembly comprises:

[0016] A first locking member, provided on the first support frame, for abutting against the side plate of the side beam;

[0017] A second locking member, provided on the beam body, for abutting against the slot plate of the side beam;

[0018] A third locking member, provided on the beam body, for abutting against the side plate of the side beam;

[0019] The swinging member is arranged at the notch of the supporting groove and is used for opening and closing the notch of the supporting groove.

[0020] Preferably, the beam body is provided with fixing heads at both opposite ends along the first direction, and the second locking assembly comprises:

[0021] a fifth locking member, disposed on the second support frame, and configured to abut against the fixing head along a second direction;

[0022] A sixth locking member is disposed on the second support frame and is used for abutting against the fixing head along a third direction.

[0023] Preferably, the supporting disc comprises a first disc portion, a second disc portion and a third disc portion, the outer circumferences of the first disc portion, the second disc portion and the third disc portion together form a full circular outer contour, and the first disc portion, the second disc portion and the third disc portion together enclose the mounting opening, the second disc portion and the third disc portion are both rotatably arranged on the first disc portion, and the second disc portion and the third disc portion can be rotated in a direction away from or close to each other to open and close the mounting opening.

[0024] Preferably, a first abutting portion is provided on a side of the second disc portion facing the third disc portion, a second abutting portion is provided on a side of the third disc portion facing the second disc portion, a first fixing hole is provided on the first abutting portion, and a second fixing hole is provided on the second abutting portion; an abutting protrusion is provided on the first abutting portion, and an abutting groove is provided on the second abutting portion;

[0025] When the second disk portion and the third disk portion rotate toward each other to close the installation opening, the first abutting portion abuts against the second abutting portion, the abutting protrusion is inserted into the abutting groove, the first fixing hole and the second fixing hole are arranged opposite to each other, and the fixing piece passes through the first fixing hole and the second fixing hole to fix the first abutting portion and the second abutting portion.

[0026] Preferably, the third locking assembly comprises:

[0027] a seventh locking member, provided on the first plate portion, for abutting against the side plate of the side beam along the second direction;

[0028] an eighth locking member, provided on the first plate portion, and used for abutting against the beam body along a third direction;

[0029] A ninth locking member is provided on the second plate portion and the third plate portion, and is used for abutting against the beam body along a third direction.

[0030] Preferably, at least three rollers are rotatably provided on the support, and at least three of the rollers are in rolling contact with the full-circle outer contour, so that the support disc is rotatably connected to the support.

[0031] Preferably, the support disc is fixedly provided with a support block on the inner wall of the mounting port, and the support block is provided with two fixing plates spaced apart along the second direction, each of the fixing plates is threadedly connected with a first locking bolt, and the beam body is correspondingly provided with a fixing portion, and the fixing portion is located between the two fixing plates, and the first locking bolt is used to abut against the fixing portion to lock the beam body to the support block.

[0032] Preferably, the beam body is provided with two positioning plates spaced apart along the second direction, each of the positioning plates is threadedly connected with a second locking bolt, and the support disc is correspondingly provided with a positioning protrusion, the positioning protrusion is located between the two positioning plates, and the second locking bolt is used to abut against the positioning protrusion to lock the positioning protrusion to the beam body.

[0033] Beneficial effects:

[0034] The welding auxiliary device provided by the present invention can correspond to a side beam on both sides of the beam body along the second direction. Specifically, the two opposite ends of the side beam along the first direction are supported on the first support frame at the corresponding end. The groove plate of the side beam faces the corresponding side of the beam body along the second direction and is in contact with the beam body, and the side plate of the side beam is arranged with its back to the beam body. The spacing between the two opposite sides of the beam body along the second direction gradually decreases from the middle to the two ends, which can provide reverse deformation prefabrication when the side beam is in contact. The first locking assembly can lock the side beam on the beam body to ensure that the groove plate of the side beam and the beam body are reliably fitted. The two edge support mechanisms are arranged one by one corresponding to the two opposite ends of the beam body, and the end of the beam body is supported on the corresponding second support frame, and the locking between the beam body and the side beam is achieved by the second locking assembly. The rotary positioner drives the second support frame to rotate, so as to drive the tooling beam to change its angle, thereby adjusting the position of the groove weld of the side beam fixed on the tooling beam. The beam body on which the side beam is installed is provided with an installation opening of a support disc and supported on the installation opening. The side beam is locked to the beam body through a third locking assembly, and the beam body is locked to the support disc. The support disc is rotatably connected to the support. When the tooling beam changes its angle, it drives the support disc to rotate relative to the support. In this welding auxiliary device, the side beam is installed on the beam body to achieve anti-deformation prefabrication. The coordinated use of the edge support mechanism and the middle support mechanism can reduce the deformation tendency of the beam body itself on the basis of effectively fixing the tooling beam mechanism, thereby reducing the adverse effects on the side beam welding deformation, ensuring that the side beam groove welding process is reliable and stable to reduce deformation, and also effectively reducing the amount of flame correction after welding, thereby improving the overall welding quality and production efficiency of the side beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a side beam of a locomotive chassis provided by the prior art;

[0036] Figure 2 yes Figure 1 Schematic diagram of the cross section at A in the middle;

[0037] Figure 3 yes Figure 1 The cross-sectional diagram at B in the middle;

[0038] Figure 4 It is a structural schematic diagram of the side beam installed by the welding auxiliary device provided by the prior art;

[0039] Figure 5 yes Figure 4 Schematic diagram of the cross section at A1;

[0040] Figure 6 It is a structural schematic diagram of the welding auxiliary device provided by the present invention;

[0041] Figure 7 It is a structural schematic diagram of the tooling beam mechanism provided by the present invention;

[0042] Figure 8 The present invention Figure 7 A local enlarged schematic diagram of C1 in the middle;

[0043] Fig. 9 The present invention Figure 7 A local enlarged schematic diagram of C2 in the middle;

[0044] Fig.10 It is a partial structural schematic diagram of the tooling beam mechanism provided by the present invention;

[0045] Fig.11 is a structural schematic diagram of the edge support mechanism provided by the present invention;

[0046] Fig.12 It is a structural schematic diagram of the intermediate support mechanism provided by the present invention;

[0047] Fig.13 It is a structural schematic diagram of the intermediate support mechanism and the tooling beam mechanism provided by the present invention;

[0048] Fig.14 It is a structural schematic diagram of the edge support mechanism and the tooling beam mechanism provided by the present invention;

[0049] Fig.15 It is a schematic diagram of the position of the tooling beam mechanism when a side beam provided by the present invention needs to be welded.

[0050] In the figure:

[0051] 1', tooling beam; 11', anti-deformation block; 2', rotary reducer; 3', clamping mechanism;

[0052] 1. Tooling beam mechanism; 11. Beam body; 111. Beam side plate; 112. Anti-deformation plate; 113. Web plate; 114. Rib plate; 115. Fixed head; 116. Fixed part; 117. Positioning plate; 1171. Second locking bolt; 118. Bottom support head; 119. Upper positioning piece; 12. First support frame; 121. Support groove; 1211. Locking groove; 131. First threaded member; 132. Second threaded member; 1321. Locking head; 1322. Base plate; 1331. Tightening block; 13311. Long hole; 1332. Third threaded member; 1333. Locking nut; 1341. Fourth threaded member; 1342. Press plate; 1343. Sliding head; 1344. Slide rail;

[0053] 2. Edge support mechanism; 21. Rotary positioner; 22. Second support frame; 221. Second screw hole; 222. Third screw hole; 223. Protruding support head; 231. Fifth threaded member; 232. Sixth threaded member; 233. Positioning stop plate;

[0054] 3. Intermediate supporting mechanism; 31. Support; 311. Roller; 32. Supporting disc; 3201. Mounting port; 321. First disc portion; 3211. Fourth screw hole; 3212. Fifth screw hole; 322. Second disc portion; 3221. First abutting portion; 32211. Abutting protrusion; 3222. Sixth screw hole; 323. Third disc portion; 3231. Second abutting portion; 32311. Second fixing hole; 32312. Abutting groove; 324. Support block; 325. Fixing plate; 3251. First locking bolt; 326. Positioning protrusion; 331. Seventh threaded member; 332. Eighth threaded member; 333. Ninth threaded member;

[0055] 4. Side beam; 41. Side plate; 42. Channel plate; 421. Side part; 43. Hanging tube; 431. Hanging hole. DETAILED DESCRIPTION

[0056] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0057] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0059] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0060] Reference Figures 1 to 3 , Figures 6 to 15 As shown, this embodiment provides a welding auxiliary device. The welding auxiliary device is used to install the side beam 4 of the locomotive chassis, and the side beam 4 includes a side plate 41 and a groove plate 42. The two side portions 421 of the groove plate 42 are welded to the side plate 41. It is worth mentioning that the side beam 4 installed on the welding auxiliary device, its side plate 41 and the groove plate 42 have been fixed by preliminary welding, but have not been completely welded, and the groove welding of the side beam 4 needs to be implemented on the welding auxiliary device.

[0061] The welding auxiliary device includes a tooling beam mechanism 1, an edge support mechanism 2 and an intermediate support mechanism 3. The tooling beam mechanism 1 includes a beam body 11, a first support frame 12 and a first locking assembly. The beam body 11 extends along a first direction. The two opposite sides of the beam body 11 along a second direction are respectively used to abut against the groove plates 42 of the two side beams 4, and the spacing between the two opposite sides of the beam body 11 along the second direction gradually decreases from the middle to the two ends. The first support frame 12 is arranged in pairs at the two opposite ends of the beam body 11 along the first direction, and is used to support the corresponding ends of the side beam 4. The first locking assembly is used to lock the side beam 4 on the beam body 11. Two edge support mechanisms 2 are provided at intervals along the first direction. The two edge support mechanisms 2 are provided one-to-one with the two opposite ends of the beam body 11. The edge support mechanism 2 includes a rotary positioner 21, a second support frame 22 and a second locking assembly. The second support frame 22 is provided on the rotary disk of the rotary positioner 21 and is used to support the corresponding end of the beam body 11. The second locking assembly is used to lock the beam body 11 on the second support frame 22. The intermediate support mechanism 3 includes a support 31, a support disc 32 and a third locking assembly. The support disc 32 is rotatably provided on the support 31. The support disc 32 has an installation opening 3201. The beam body 11 on which the side beam 4 is installed passes through the installation opening 3201 and is supported on the installation opening 3201. The third locking assembly is used to lock the side beam 4 on the beam body 11 and to lock the beam body 11 on the support disc 32.

[0062] In this embodiment, the first direction is the extension direction of the beam body 11, that is, the length direction, and is also the length direction of the side beam 4 when the beam body 11 fixes the side beam 4, that is, the length direction of the side plate 41 and the groove plate 42. The second direction is the thickness direction of the beam body 11, and is also the thickness direction of the side beam 4 when the beam body 11 fixes the side beam 4, that is, the thickness direction of the side plate 41 and the groove plate 42. Specifically, when the beam body 11 fixes the side beam 4, the two side portions 421 of the groove plate 42 are extended along the second direction.

[0063] In this embodiment, both sides of the beam body 11 opposite to each other along the second direction can correspond to a side beam 4. Specifically, the two opposite ends of the side beam 4 along the first direction are supported on the first support frame 12 at the corresponding end. The groove plate 42 of the side beam 4 faces the corresponding side of the beam body 11 along the second direction and is in contact with the beam body 11, and the side plate 41 of the side beam 4 is arranged away from the beam body 11. The spacing between the two opposite sides of the beam body 11 along the second direction gradually decreases from the middle to the two ends, which can provide anti-deformation prefabrication when the side beam 4 is in contact, and the first locking assembly can lock the side beam 4 on the beam body 11 to ensure that the groove plate 42 of the side beam 4 and the beam body 11 are reliably in contact. The two edge support mechanisms 2 are arranged one by one corresponding to the two opposite ends of the beam body 11, and the end of the beam body 11 is supported on the corresponding second support frame 22, and the locking between the beam body 11 and the side beam 4 is achieved by the second locking assembly. The rotary positioner 21 drives the second support frame 22 to rotate, so as to drive the tooling beam to change its angle, thereby adjusting the position of the groove weld of the side beam 4 fixed on the tooling beam. The beam body 11 with the side beam 4 installed is penetrated by the installation opening 3201 of the support disc 32 and supported on the installation opening 3201. The side beam 4 is locked to the beam body 11 through the third locking assembly, and the beam body 11 is locked to the support disc 32. The support disc 32 is rotatably connected to the support 31. When the tooling beam changes its angle, it drives the support disc 32 to rotate relative to the support 31. The welding auxiliary device, the side beam 4 is installed on the beam body 11 to realize anti-deformation prefabrication, and the coordinated use of the edge support mechanism 2 and the middle support mechanism 3 can reduce the deformation tendency of the beam body 11 itself on the basis of effectively fixing the tooling beam mechanism 1, thereby reducing the adverse effects on the welding deformation of the side beam 4, ensuring that the groove welding process of the side beam 4 is reliable and stable to reduce deformation, and also effectively reducing the amount of flame correction after welding, thereby improving the overall welding quality and production efficiency of the side beam 4.

[0064] In this embodiment, refer to Figures 7 to 10 as well as Fig.15As shown, the beam body 11 includes two beam side plates 111, at least one anti-deformation plate 112, at least one web 113 and a plurality of ribs 114. The beam side plates 111 and the anti-deformation plates 112 extend along the first direction, all the anti-deformation plates 112 are located between the two beam side plates 111, the beam side plates 111 and the anti-deformation plates 112 are arranged in parallel and spaced along the third direction, and the spacing between the beam side plates 111 and the anti-deformation plates 112 on both sides opposite to each other along the second direction is gradually reduced from the middle to both ends. The web 113 extends along the first direction, the web 113 is located between the two beam side plates 111, the web 113 penetrates all the anti-deformation plates 112, and the web 113 is fixedly connected to the beam side plates 111 and the anti-deformation plates 112. Ribs 114 are connected between two adjacent anti-deformation plates 112 and / or between the anti-deformation plates 112 and the corresponding adjacent beam side plates 111. Specifically, two beam side plates 111 and at least one web plate 113 form the main frame structure of the beam body 11, bearing the main strength of the beam body 11. The anti-deformation plate 112 is used to mainly support the side beam 4. The spacing between the two opposite sides of the anti-deformation plate 112 along the second direction gradually decreases from the middle to both ends, that is, the two opposite sides of the anti-deformation plate 112 along the second direction are both set as convex arc-shaped outer edges, which can be used to provide anti-deformation prefabrication for the side beam 4 as a whole when the groove plate 42 of the side beam 4 is fitted. The provision of the rib plate 114 further enhances the connection strength between the two anti-deformation plates 112 and between the anti-deformation plate 112 and the adjacent corresponding beam side plates 111, ensuring the overall stability and reliability of the beam body 11.

[0065] Specifically, the beam side plates 111 , the anti-deformation plates 112 , the web plates 113 and the rib plates 114 are fixedly connected by welding.

[0066] In this embodiment, the first support frame 12 and the beam side plate 111 are fixedly connected by welding.

[0067] In this embodiment, a plurality of bottom support heads 118 are fixedly disposed at the bottom of the beam side plate 111 located below. The bottom support heads 118 can cooperate with the first support frame 12 to effectively support the beam body 11 and reduce the suspended portion of the beam body 11.

[0068] In this embodiment, a plurality of upper positioning plates 119 are fixedly provided on the side of the upper beam side plate 111. When the upper positioning plates 119 are provided to support the side beam 4, the upper positioning plates 119 can be abutted against the end of the groove plate 42 along the length direction of the side beam 4, thereby further limiting the side beam 4 and ensuring that the side beam is installed reliably and stably to avoid movement of the side beam along its own length direction.

[0069] In this embodiment, the first support frame 12 defines a support groove 121 for supporting the corresponding ends of the side beam 4 , and opposite ends of the beam body 11 extend into and are supported in the support groove 121 .

[0070] In this embodiment, the first locking assembly includes a first locking member, a second locking member, a third locking member and a swinging member. Among them, the first locking member is arranged on the first support frame 12, and is used to abut against the side plate 41 of the side beam 4; the second locking member is arranged on the beam body 11, and is used to abut against the groove plate 42 of the side beam 4; the third locking member is arranged on the beam body 11, and is used to abut against the side plate 41 of the side beam 4; the swinging member is arranged at the notch of the support groove 121, and is used to open and close the notch of the support groove 121. Specifically, the first locking member abuts against the side plate 41 of the side beam 4, so that the groove plate 42 of the side beam 4 is tightly fitted on the anti-deformation plate 112 of the beam body 11. The second locking member and the third locking member can cooperate together to simultaneously fix and clamp the opposite sides of the same side beam 4, that is, the side plate 41 and the groove plate 42, to ensure that the side beam 4 is reliable and stable and to suppress deformation. The setting of the swing member can open and close the notch of the support groove 121 in time. The swing member opens the notch to allow the side beam 4 to be placed into the support groove 121 through the notch. Then the swing member swings in the opposite direction to close the notch, so that the end of the side beam 4 can be reliably restricted in the support groove 121. After the notch is closed, a closed body is formed, which can effectively prevent the groove leg of the support groove 121 from being deformed when the first locking member applies force.

[0071] Specifically, the first locking member includes a first threaded member 131, the first bracket 12 is provided with a first screw hole (not shown), the first threaded member 131 passes through the first screw hole and is threadedly connected with the first screw hole, and the first threaded member 131 is used to abut against the side plate 41 of the side beam 4. Specifically, by screwing the first threaded member 131, the first threaded member 131 can be extended and retracted relative to the first screw hole, so that the first threaded member 131 is tightly abutted against the side plate 41 of the side beam 4, so that the groove plate 42 of the side beam 4 is tightly abutted against the anti-deformation plate 112 of the beam body 11.

[0072] Exemplarily, at least one first threaded member 131 is disposed on both sides of the beam body 11 opposite to each other along the second direction, and the first threaded member 131 is disposed in one-to-one correspondence with the first screw hole. Exemplarily, the first threaded member 131 is configured as a screw rod, and can also be configured as a bolt, a screw, etc.

[0073] In some other optional embodiments, the first locking member may also include a telescopic cylinder, an electric push rod, a linear servo module, and other components with a translational telescopic function, which are not further limited herein.

[0074] Specifically, the swinging member includes a second threaded member 132, a locking head 1321 and a base plate 1322. Specifically, the base plate 1322 is fixedly connected to the beam body 11, and more specifically, the base plate 1322 is fixedly connected to the beam side plate 111 located on the upper side. A rotating portion is provided between the second threaded member 132 and the base plate 1322, and the second threaded member 132 can swing relative to the base plate 1322 through the rotating portion. A locking head 1321 is threadedly connected to one end of each second threaded member 132 that is opposite to the rotating portion. For details, refer to Figure 8 As shown, after the second threaded member 132 swings downward, it can finally enter the locking groove 1211 provided in the corresponding side support groove 121, and the end of the second threaded member 132 passes through the locking groove 1211. Then, the locking head 1321 can be screwed in, so that the locking head 1321 is tightly against the outer side wall of the locking groove 1211, thereby fixing the second threaded member 132.

[0075] Optionally, the rotating portion can be configured as a rotating shaft, which is rotatably connected to the base plate 1322 , and the second threaded member 132 is fixedly disposed on the rotating shaft, and the rotation axis of the rotating shaft is parallel to the first direction.

[0076] Optionally, the second threaded member 132 is configured as a screw rod, and may also be configured as a bolt, a screw, etc.

[0077] In some other optional embodiments, the swinging member can also be configured as a swing rod driven by a servo motor to perform a swinging motion, and the motor can be used to achieve automatic fixation after swinging into place.

[0078] Specifically, the second locking member includes a clamping block 1331, a third threaded member 1332 and a locking nut 1333. The third threaded member 1332 is fixedly arranged on the beam body 11, and more specifically, the third threaded member 1332 is fixedly connected to the beam side plate 111 located on the upper side. The clamping block 1331 is provided with a long hole 13311, and the clamping block 1331 is sleeved on the third threaded member 1332 through the long hole 13311. The end of the third threaded member 1332 facing away from the beam body 11 is threadedly connected with the locking nut 1333, and the clamping block 1331 is used to abut the slot plate 42 of the side beam 4. Specifically, loosening the locking nut 1333 releases the pressure of the locking nut 1333 on the clamping block 1331, so that the clamping block 1331 can be movably adjusted in position with the cooperation of the long hole 13311 and the third threaded member 1332. When the clamping block 1331 moves to the slot plate 42 that can be pressed against the side beam 4, tightening the locking nut 1333 to fix the clamping block 1331, so that the clamping block 1331 remains in a state of being pressed against the slot plate 42.

[0079] Optionally, the third threaded member 1332 is configured as a screw rod, and may also be configured as a bolt, a screw, etc. It is worth mentioning that when the third threaded member 1332 is configured as a bolt or a screw, the screw head of the bolt or the screw is configured downward.

[0080] In some other optional embodiments, the second locking member may also include a telescopic cylinder, an electric push rod, a linear servo module, or other components with a translational telescopic function, which are not further limited herein.

[0081] Specifically, the third locking member includes a fourth threaded member 1341 and a pressing plate 1342, the fourth threaded member 1341 is connected to the pressing plate 1342, the fourth threaded member 1341 penetrates the side plate 41 and the slot plate 42 and is screwed to the beam body 11, and the pressing plate 1342 is used to abut the side plate 41 of the side beam 4. Specifically, the side beam 4 is provided with a process hole penetrating the side plate 41 and the slot plate 42, and the process hole can subsequently correspond to the hanging tube 43 of the side beam 4. Specifically, the axis of the fourth threaded member 1341 is parallel to the second direction. The fourth threaded member 1341 penetrates the pressing plate 1342 and is rotatably connected to the pressing plate 1342, the hanging tube 43 is provided with a hanging hole 431, and the fourth threaded member 1341 penetrates the process hole and is screwed to the beam body 11, and can adjust the distance between the pressing plate 1342 and the beam body 11 along the second direction, so that the pressing plate 1342 can be tightly abutted against the side plate 41 of the side beam 4.

[0082] Optionally, the fourth threaded member 1341 is configured as a bolt or a screw.

[0083] Furthermore, a slide rail 1344 is provided on the beam body 11 along the first direction, a sliding head 1343 is slidably connected to the slide rail 1344, and the fourth threaded member 1341 is finally threadedly connected to the sliding head 1343. By providing the slide rail 1344 and the sliding part, the fourth threaded member 1341 can be adjusted in position in the first direction, so as to be able to adaptably dock with the position of the hanging hole 431 of the hanging tube 43.

[0084] In some other optional embodiments, the third locking member may also include a telescopic cylinder, an electric push rod, a linear servo module, or other components with a translational telescopic function. Taking the telescopic cylinder as an example, the cylinder body of the telescopic cylinder is fixed to the beam body 11, and the cylinder rod of the telescopic cylinder extends outward from the beam body 11 along the second direction and is fixedly connected to the pressing plate 1342, which can also play a role of pressing against the side plate 41 of the edge beam 4.

[0085] In this embodiment, refer to Figure 8 , Fig.11 , Fig.14As shown, the beam body 11 is provided with fixed heads 115 at both opposite ends along the first direction, and the second locking assembly includes a fifth locking member and a sixth locking member. The fifth locking member is provided on the second bracket 22, and is used to abut against the fixed head 115 along the second direction; the sixth locking member is provided on the second bracket 22, and is used to abut against the fixed head 115 along the third direction. Specifically, the cooperation of the fifth locking member and the sixth locking member can reliably and effectively lock the fixed head 115 at the end of the beam body 11, and realize a reliable and stable connection between the beam body 11 and the rotary positioner 21.

[0086] Specifically, the fifth locking member includes a fifth threaded member 231, the second bracket 22 is provided with a second screw hole 221, the fifth threaded member 231 penetrates a third screw hole 222 and is threadedly connected to the third screw hole 222, and the fifth threaded member 231 is used to abut against the fixing head 115 along the second direction. The sixth locking member includes a sixth threaded member 232, the second bracket 22 is provided with a third screw hole 222, the sixth threaded member 232 penetrates a fourth screw hole 3211 and is threadedly connected to the fourth screw hole 3211, and the sixth threaded member 232 is used to abut against the fixing head 115 along the third direction.

[0087] Specifically, the third direction is the width direction of the beam body 11 in this embodiment, and is also the width direction of the side beam 4 when the beam body 11 fixes the side beam 4, that is, the spacing direction of the two side portions 421 of the slot plate 42. Specifically, by screwing the fifth threaded member 231, the fifth threaded member 231 can be extended and retracted relative to the second screw hole 221, so that the fifth threaded member 231 is pressed against the fixing head 115 along the second direction, and by screwing the sixth threaded member 232, the sixth threaded member 232 can be extended and retracted relative to the third screw hole 222, so that the sixth threaded member 232 is pressed against the fixing head 115 along the third direction.

[0088] Specifically, two convex support heads 223 are arranged on the second support frame 22, and the second screw hole 221 and the third screw hole 222 are both opened on the convex support heads 223. When the fixing head 115 on the corresponding side of the beam body 11 is supported in place on the second support frame 22, the fixing head 115 is located between the two convex support heads 223.

[0089] Exemplarily, the fifth threaded member 231 and the sixth threaded member 232 are configured as screw rods, and may also be configured as bolts, screws, etc.

[0090] In some other optional embodiments, the fifth locking member and the sixth locking member may also include components with translational telescopic functions, such as telescopic cylinders, electric push rods, and linear servo modules, which are not further limited herein.

[0091] Specifically, a limit abutment plate 233 is also provided on the second support frame 22. When the fixing head 115 on the corresponding side of the beam body 11 is supported in place on the second support frame 22, the limit lower plate abuts against the fixing head 115, thereby providing installation limit for the beam body 11 in the first direction.

[0092] In this embodiment, the fixing head 115 is configured in a cross shape as shown in the figure, and the structure is reliable and stable.

[0093] In this embodiment, refer to Figure 12 to Figure 13 As shown, the support disc 32 includes a first disc portion 321, a second disc portion 322 and a third disc portion 323, the outer peripheries of the first disc portion 321, the second disc portion 322 and the third disc portion 323 together form a full circular outer contour, and the first disc portion 321, the second disc portion 322 and the third disc portion 323 together enclose a mounting opening 3201, the second disc portion 322 and the third disc portion 323 are both rotatably arranged on the first disc portion 321, and the second disc portion 322 and the third disc portion 323 can be rotated in a direction away from or close to each other to open and close the mounting opening 3201. Specifically in this embodiment, the first disc portion 321 itself occupies three quarters of the entire support disc 32, and the second disc portion 322 and the third disc portion 323 together divide the remaining quarter of the support disc 32 equally. The second disc portion 322 and the third disc portion 323 are both rotatably connected to the first disc portion 321 through a rotating shaft (not shown). Specifically, a structure similar to a double-door can be formed between the second plate portion 322 and the third plate portion 323 , thereby opening the installation opening 3201 , so that the beam body 11 with the side beam 4 installed can enter and be supported on the installation opening 3201 .

[0094] Further, a first abutting portion 3221 is provided on a side of the second disk portion 322 facing the third disk portion 323, a second abutting portion 3231 is provided on a side of the third disk portion 323 facing the second disk portion 322, a first fixing hole is provided on the first abutting portion 3221, and a second fixing hole 32311 is provided on the second abutting portion 3231. When the second disk portion 322 and the third disk portion 323 rotate toward each other to close the installation opening 3201, the first abutting portion 3221 abuts against the second abutting portion 3231, the first fixing hole and the second fixing hole 32311 are arranged opposite to each other, and the fixing member penetrates the first fixing hole and the second fixing hole 32311 to fix the first abutting portion 3221 and the second abutting portion 3231. Specifically, the first abutting portion 3221 has a first abutting end face arranged toward the second abutting portion 3231, and the second abutting portion 3231 has a second abutting end face arranged toward the first abutting portion 3221, and the first abutting end face and the second abutting end face are both arranged as inclined end faces. The first fixing hole penetrates the first abutting end face, and the second fixing hole 32311 penetrates the second abutting end face. When the second disk portion 322 and the third disk portion 323 rotate toward each other to close the mounting port 3201, the first abutting end face abuts the second abutting end face, and the first fixing hole and the second fixing hole 32311 are in a position facing each other, and at this time, the first fixing portion 116 and the second fixing portion 116 can be fixed by the fixing member. Optionally, the fixing assembly can be arranged as a bolt assembly, and the bolt assembly includes a bolt and a nut, and the bolt is threadedly connected with the nut after passing through the first fixing hole and the second fixing hole 32311.

[0095] Further, a side of the first abutting portion 3221 facing the second abutting portion 3231 is provided with an abutting protrusion 32211, and a side of the second abutting portion 3231 facing the first abutting portion 3221 is correspondingly provided with an abutting groove 32312, the width of the abutting protrusion 32211 gradually decreases toward the side close to the abutting groove 32312, and the two opposite groove walls of the abutting groove 32312 gradually increase toward the side close to the abutting protrusion 32211, when the second disk portion 322 and the third disk portion 323 rotate toward each other to close the installation port 3201, the abutting protrusion 32211 is inserted into the abutting groove 32312 and abuts against the two groove walls of the abutting groove 32312. In this embodiment, the third locking assembly includes a seventh locking member, an eighth locking member, and a ninth locking member. The seventh locking member is provided on the first plate portion 321, and is used to abut against the side plate 41 of the side beam 4 along the second direction; the eighth locking member is provided on the first plate portion 321, and is used to abut against the beam body 11 along the third direction; the ninth locking member is provided on the second plate portion 322 and the third plate portion 323, and is used to abut against the beam body 11 along the third direction. Specifically, the seventh locking member abuts against the side plate 41 of the side beam 4, so that the groove plate 42 of the side beam 4 is tightly abutted against the anti-deformation plate 112 of the beam body 11. The eighth locking member and the ninth locking member can cooperate together to simultaneously fix and clamp the middle part of the beam body 11, that is, the beam side plates 111 on both sides of the beam body 11 along the third direction, to ensure reliable and stable fixation of the beam body 11.

[0096] Specifically, the function of the seventh locking member is similar to that of the first locking member. The seventh locking member includes a seventh threaded member 331. The first plate portion 321 is provided with a fourth screw hole 3211. The seventh threaded member 331 passes through the fourth screw hole 3211 and is threadedly connected with the fourth screw hole 3211. The seventh threaded member 331 is used to abut against the side plate 41 of the side beam 4. Specifically, by screwing the seventh threaded member 331, the seventh threaded member 331 can be extended and retracted relative to the fourth screw hole 3211, so that the seventh threaded member 331 is tightly abutted against the side plate 41 of the side beam 4, so that the groove plate 42 of the side beam 4 is tightly abutted against the anti-deformation plate 112 of the beam body 11.

[0097] Exemplarily, the seventh threaded member 331 is configured as a screw rod, and may also be configured as a bolt, a screw, etc.

[0098] In some other optional embodiments, the seventh locking member may also include a telescopic cylinder, an electric push rod, a linear servo module and other components with a translational telescopic function, which are not further limited here.

[0099] Specifically, the eighth locking member includes an eighth threaded member 332, the first plate portion 321 is provided with a fifth screw hole 3212, the eighth threaded member 332 passes through the fifth screw hole 3212 and is threadedly connected to the fifth screw hole 3212, and the eighth threaded member 332 is used to abut the beam body 11 along the third direction. The ninth locking member includes a ninth threaded member 333, the second plate portion 322 is provided with a sixth screw hole 3222, the ninth threaded member 333 passes through the sixth screw hole 3222 and is threadedly connected to the sixth screw hole 3222, and the ninth threaded member 333 is used to abut the beam body 11 along the third direction.

[0100] Specifically, by screwing the eighth threaded member 332, the eighth threaded member 332 can be extended and retracted relative to the fifth screw hole 3212, so that the eighth threaded member 332 is pressed against the beam side plate 111 of the beam body 11; by screwing the ninth threaded member 333, the ninth threaded member 333 can be extended and retracted relative to the sixth screw hole 3222, so that the ninth threaded member 333 is pressed against the beam side plate 111 of the beam body 11. The joint action of the eighth threaded member 332 and the ninth threaded member 333 can fix and clamp the two beam side plates 111, ensuring reliable and stable fixation of the beam body 11.

[0101] Exemplarily, the eighth threaded member 332 and the ninth threaded member 333 are configured as screws, and may also be configured as bolts, screws, etc.

[0102] In some other optional implementations, the eighth locking member and the ninth locking member may also include components with translational telescopic functions, such as telescopic cylinders, electric push rods, and linear servo modules, which are not further limited herein.

[0103] In this embodiment, at least three rollers 311 are rotatably provided on the support 31, and at least three rollers 311 are in rolling contact with the outer contour of the entire circle, so that the support disc 32 is rotatably connected to the support 31. In this embodiment, there are four rollers 311, and the support disc 32 is located in the clamping space formed by the four rollers 311. The four rollers 311 are in rolling contact with the outer contour of the entire circle together, forming a structure similar to a roller bearing, thereby realizing reliable rotation of the support turntable.

[0104] In this embodiment, refer to Fig.10 , Fig.13As shown, the support disc 32 is fixedly provided with a support block 324 on the inner wall of the mounting opening 3201, and the support block 324 is provided with two fixing plates 325 spaced apart along the second direction, and each fixing plate 325 is threadedly connected with a first locking bolt 3251, and the beam body 11 is correspondingly provided with a fixing portion 116, and the fixing portion 116 is located between the two fixing plates 325, and the first locking bolt 3251 is used to abut the fixing portion 116 to lock the beam body 11 on the support block 324. Specifically, the fixing portion 116 is located between the two fixing plates 325, and by screwing the first locking bolt 3251, the first locking bolt 3251 can abut the fixing portion 116, thereby realizing reliable fixation between the support disc 32 and the beam body 11.

[0105] In this embodiment, two positioning plates 117 spaced apart along the second direction are provided on the beam body 11, and each positioning plate 117 is threadedly connected with a second locking bolt 1171. A positioning protrusion 326 is correspondingly provided on the support disc 32, and the positioning protrusion 326 is located between the two positioning plates 117. The second locking bolt 1171 is used to abut the positioning protrusion 326 to lock the positioning protrusion 326 on the beam body 11. Specifically, when the support disc 32 is installed in place relative to the beam body 11, the positioning protrusion 326 is located between the two positioning plates 117, and then the second locking bolt 1171 is screwed so that the second locking bolt 1171 can abut the positioning protrusion 326, thereby achieving locking between the support disc 32 and the beam body 11.

[0106] Specifically, the positioning protrusion 326 includes two positioning heads arranged at intervals, one of which is arranged at the lower end of the second disk portion 322, and the other is arranged at the lower end of the third disk portion 323. The two positioning heads are arranged one-to-one with the two positioning plates 117, and the second locking bolt 1171 is screwed so that the second locking bolt 1171 can be pressed against the corresponding positioning head to achieve reliable locking of the support disk 32.

[0107] By way of example, the following takes the side beam 4 of the C-type chassis as an example to specifically describe the use process of the above-mentioned welding auxiliary device and the welding method.

[0108] First, the second plate portion 322 and the third plate portion 323 are in a state of being opened around the axis, and the tooling beam mechanism 1 is hoisted into the installation opening 3201 as a whole through the hoisting device, so that the beam body 11 is supported on the installation opening 3201, and it is ensured that the fixing portion 116 of the beam body 11 is located between the two fixing plates 325. At the same time, the fixing heads 115 at both ends of the beam body 11 are supported on the second support frame 22 on the corresponding side, and the fixing heads 115 are tightened by using the fifth threaded member 231 and the sixth threaded member 232 on the second support frame 22, thereby completing the connection between the tooling beam mechanism 1 and the two edge support mechanisms 2.

[0109] Specifically, the installation opening 3201 is configured as a rectangular notch of 900 mm×800 mm.

[0110] The eighth threaded member 332 on the supporting disc 32 is used to support and adjust the beam body 11 so that the beam body 11 is in a horizontal state. The first locking bolt 3251 on the fixing plate 325 is screwed so that the first locking bolt 3251 locks the fixing portion 116 of the beam body 11. It is ensured that all the second threaded members 132 on the beam body 11 are in an outwardly swung vertical state, that is, the supporting slot 121 is in an open state.

[0111] Assemble the side plate 41 and the groove plate 42 according to the diagram and perform positioning welding between the side portion 421 of the groove plate 42 and the side plate 41. Since the groove plate 42 and the side plate 41 are generally prepared in sections, the groove welding between the groove plate 42 and the side plate 41 must be completed.

[0112] A process hole penetrating the side beam 4 is processed at both ends of the side beam 4, and the diameter of the process hole is 80 mm. The center of the process hole is consistent with the center position of the hanging tube 43, and the spacing is 9220 mm.

[0113] The first side beam 4 is hoisted to one of the two opposite sides of the beam body 11 in the second direction of the tooling beam mechanism 1, and the groove plate 42 of the side beam 4 faces and contacts the anti-deformation plate 112 of the beam body 11, and the side plate 41 faces away from the beam body 11. The middle part of the side beam 4 is sent into the installation opening 3201, and the two ends of the side beam 4 are sent into and supported in the support grooves 121 of the two first brackets 12, and the upper end of the side beam 4 is abutted against the upper positioning piece 119 of the beam body 11, and then the two second threaded members 132 at the two ends of the side are swung, so that the second threaded member 132 swings downward and enters the locking groove 1211 opened in the corresponding side support groove 121, and then the locking head 1321 is screwed into the end of the second threaded member 132, so that the locking head 1321 is tightly against the outer wall of the locking groove 1211, so as to fix the second threaded member 132 and close the corresponding side of the support groove 121. Then, according to the above process, the second side beam 4 is hoisted to the other side of the beam body 11 of the tooling beam mechanism 1 on the second opposite side.

[0114] The second disk 322 and the third disk 323 are rotated around the axis to close the installation port 3201. At this time, the first disk 321, the second disk 322 and the third disk 323 form a full circle structure together. At this time, the first abutting end face of the first abutting portion 3221 abuts against the second abutting end face of the second abutting portion 3231, and the abutting protrusion 32211 is inserted into the abutting groove 32312. The first fixing hole and the second fixing hole 32311 are in a position facing each other, and the first fixing portion 116 and the second fixing portion 116 are fixed by the fixing member. When the second disk 322 and the third disk 323 are closed, the positioning protrusion 326 is located between the two positioning plates 117. At this time, by screwing the second locking bolt 1171, the second locking bolt 1171 is pressed against the positioning protrusion 326, thereby achieving the locking between the support disk 32 and the beam body 11. The eighth threaded member 332 and the ninth threaded member 333 are screwed respectively so that the eighth threaded member 332 and the ninth threaded member 333 can fix and clamp the upper and lower beam side plates 111 of the beam body 11 to ensure reliable and stable fixation of the beam body 11.

[0115] The first threaded member 131 is screwed to extend outward relative to the first screw hole, so that the first threaded member 131 is pressed against the side plate 41 of the side beam 4, so that the slot plate 42 of the side beam 4 is pressed against the anti-deformation plate 112 of the beam body 11. The locking nut 1333 is loosened to release the pressing of the locking nut 1333 on the pressing block 1331, and the position of the pressing block 1331 is adjusted so that the pressing block 1331 is pressed against the slot plate 42 of the side beam 4. The locking nut 1333 is tightened to fix the pressing block 1331, so that the pressing block 1331 is kept in a state of pressing against the slot plate 42. The fourth threaded member 1341 is threadedly connected to the beam body 11 through the process hole, and the distance between the pressing plate 1342 and the beam body 11 along the second direction is adjusted so that the pressing plate 1342 is pressed against the side plate 41 of the side beam 4. The seventh threaded member 331 is screwed to extend outward relative to the fourth screw hole 3211, so that the seventh threaded member 331 is pressed against the side plate 41 of the side beam 4, so that the groove plate 42 of the side beam 4 is pressed against the anti-deformation plate 112 of the beam body 11. The groove plate 42 of the side beam 4 is pressed against the corresponding anti-deformation plate 112. Since the spacing between the two opposite sides of the anti-deformation plate 112 along the second direction gradually decreases from the middle to both ends, that is, the two opposite sides of the anti-deformation plate 112 along the second direction are both set as convex arc-shaped outer edges, it can be used to provide anti-deformation prefabrication for the side beam 4 as a whole when the groove plate 42 of the side beam 4 is pressed. Due to the existence of anti-deformation, the beam body 11 has a tendency to deform. Taking the right side beam 4 as an example, if the beam body 11 is not rigid enough and is in a free state, a horizontal convex deformation tendency will be generated in the middle to the left. The lower the rigidity of the beam body 11, the greater the deformation tendency. Therefore, the fifth threaded member 221 on the second bracket 22 can limit the degree of freedom of the end of the beam body 11, thereby preliminarily controlling the deformation tendency of the beam body 11. At the same time, the first locking bolt 3251 on the first plate portion 321 and the positioning protrusion 326 ( Fig.13 The middle right side) can limit the degree of freedom of the middle part of the beam body 11, thereby completely controlling the deformation trend of the beam body 11 to bulge horizontally to the left, ensuring that the beam body 11 will not undergo a large deformation due to the reverse deformation of the right side beam 4.

[0116] After the above work is completed, the fixing work of the two side beams 4 is completed. Next, the welding work of the groove weld is carried out. By rotating the rotary positioner 21, the groove weld to be welded needs to be in the position of the boat-shaped weld. Since each weld has an arc and is not a linear weld, the arc tracking technology of the traditional welding robot has low accuracy, and the welding may deviate. During mass production, the operator needs to make corrections at any time, which is not suitable for robot welding of the anti-deformation side beam 4. In this embodiment, a more accurate laser tracking technology is used.

[0117] The welding robot is used to weld the right side beam 4. Each groove weld is welded twice.

[0118] For the first welding of the first groove weld of the right side beam 4, two welding robots weld from the middle of the side beam 4 to both sides respectively. Each welding robot uses a single wire for welding, with a welding speed of 40 cm / min, a voltage of 220 V, and a current of 23 A.

[0119] For the first welding of the second groove weld of the right side beam 4, two welding robots weld from the middle of the side beam 4 to both sides respectively. Each welding robot uses a single wire for welding, with a welding speed of 40 cm / min, a voltage of 220 V, and a current of 23 A.

[0120] The second welding of the first groove weld of the right side beam 4, two welding robots weld from the middle of the side beam 4 to both sides respectively, each welding robot uses a single wire for welding, the welding speed is 35cm / min, the voltage is 240V / 235V, and the current is 28A / 26A;

[0121] For the second welding of the second groove weld of the right side beam 4, two welding robots welded from the middle of the side beam 4 to both sides respectively. Each welding robot used single wire for welding, with a welding speed of 35cm / min, a voltage of 240V / 235V, and a current of 28A / 26A.

[0122] After the above welding of the right side beam 4 is completed, the above welding steps are also performed on the groove weld of the left side beam 4, and the parameters are the same as above.

[0123] After the left side beam 4 is welded, the right side beam 4 has cooled down. At this time, the first threaded member 131 corresponding to the right side beam 4 can be loosened to release the tightness of the side plate 41 of the right side beam 4. Loosen the locking nut 1333 on the right side and adjust the position of the right tight block 1331 to release the tightness of the groove plate 42 of the side beam 4. Loosen the fourth threaded member 1341 to release the pressure of the pressure plate 1342 on the side plate 41 of the right side beam 4. Loosen the seventh threaded member 331 on the right side to release the tightness of the seventh threaded member 331 on the side plate 41 of the side beam 4. The second locking member 1321 is loosened on the right side so that the locking head 1321 releases the tight contact with the outer wall of the locking groove 1211, thereby allowing the second threaded member 132 to swing upward to open the right notch of the support groove 121, loosen the ninth threaded member 333 on the third disk portion 323, loosen the second locking bolt 1171 on the right side positioning plate 117 of the beam body 11, and release the bolt in the second fixing hole 32311. The above steps respectively release the locking of the third disk portion 323 in the third direction, the second direction and the first direction, so that the third disk portion 323 can be opened, so that the side beam 4 on the right side can be lifted out by the lifting equipment, and the second disk portion 322 still remains in a locked state, which can keep offsetting the horizontal convex deformation trend of the middle part of the beam body 11 to the right.

[0124] After the right welded side beam 4 is hoisted out, the next side beam 4 to be welded can be hoisted in and the above clamping and welding work is repeated. During this process, the left welded side beam 4 is gradually cooled. Repeat the above operation to hoist out the left welded side beam 4 and hoist in the next left side beam 4 to be welded for welding.

[0125] The above process can ensure that one of the two side beams 4 is being welded while the other is being cooled, and welding and cooling are performed simultaneously, thereby effectively improving the welding pin efficiency of the side beam 4.

[0126] It is worth mentioning that after the welding of the side beam 4 is completed, due to the existence of welding shrinkage, the center spacing of the process holes will be reduced by about 10-20mm, and the spacing will become 9200-9210mm. The diameter of the process hole is 80mm, and the hole diameter of the hanging tube 43 is 170mm. The difference between the two is much larger than the welding shrinkage distance. The hanging tube 43 with a hole spacing of 9220mm will cover the original process hole, and there is no need to fill the process hole. Finally, the hanging tube 43 is assembled on the side beam 4 and welded fixed.

[0127] In summary, the welding auxiliary device provided in this embodiment can not only pre-deform the side beam 4 when fixing it, but also effectively suppress the adverse effects of the device itself on the welding deformation of the side beam 4, reduce the deformation amount and flame correction amount of the side beam 4, and improve the welding quality and production efficiency.

[0128] In addition, the welding method using the above-mentioned welding auxiliary device realizes the one-welding-one-cooling technology of the double-sided beam 4. One is welded while the other is cooled. The disassembly and assembly of the single-sided side beam 4 does not affect the anti-deformation control of the other side beam 4 after welding, thereby improving production efficiency.

[0129] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A welding auxiliary device for installing a side beam (4) of a locomotive chassis, wherein the side beam (4) comprises a side plate (41) and a groove plate (42), and two side portions (421) of the groove plate (42) are welded to the side plate (41), characterized in that: The welding auxiliary device comprises a tooling beam mechanism (1), an edge support mechanism (2) and an intermediate support mechanism (3); wherein: The tooling beam mechanism (1) comprises a beam body (11), a first support frame (12) and a first locking assembly, wherein the beam body (11) extends along a first direction, and two opposite sides of the beam body (11) along a second direction are respectively used to abut against the groove plates (42) of the two side beams (4), and the spacing between the two opposite sides of the beam body (11) along the second direction gradually decreases from the middle to the two ends, the first support frame (12) is arranged in pairs at the two opposite ends of the beam body (11) along the first direction, and is used to support the corresponding ends of the side beam (4), and the first locking assembly is used to lock the side beam (4) on the beam body (11); Two edge support mechanisms (2) are arranged at intervals along the first direction, and the two edge support mechanisms (2) are arranged one-to-one corresponding to the two opposite ends of the beam body (11). The edge support mechanism (2) comprises a rotary positioner (21), a second support frame (22) and a second locking assembly. The second support frame (22) is arranged on the rotary disk of the rotary positioner (21) and is used to support the corresponding end of the beam body (11). The second locking assembly is used to lock the beam body (11) on the second support frame (22); The intermediate support mechanism (3) comprises a support (31), a support disc (32) and a third locking assembly, wherein the support disc (32) is rotatably mounted on the support (31), the support disc (32) has a mounting opening (3201), the beam body (11) on which the side beam (4) is mounted passes through the mounting opening (3201) and is supported on the mounting opening (3201), and the third locking assembly is used to lock the side beam (4) to the beam body (11), and to lock the beam body (11) to the support disc (32).

2. The welding auxiliary device according to claim 1, characterized in that: The beam body (11) comprises two beam side plates (111), at least one anti-deformation plate (112), at least one web plate (113) and a plurality of rib plates (114); wherein: The beam side plates (111) and the anti-deformation plates (112) are both extended in a first direction, all the anti-deformation plates (112) are located between two beam side plates (111), the beam side plates (111) and the anti-deformation plates (112) are both arranged in parallel and spaced apart in a third direction, and the spacing between the beam side plates (111) and the anti-deformation plates (112) on two sides opposite to each other in the second direction is gradually reduced from the middle to both ends; The web (113) extends along a first direction, the web (113) is located between the two beam side plates (111), the web (113) penetrates all the anti-deformation plates (112), and the web (113) is fixedly connected to the beam side plates (111) and the anti-deformation plates (112); The rib plate (114) is connected between two adjacent anti-deformation plates (112) and / or between the anti-deformation plate (112) and the adjacent corresponding beam side plate (111).

3. The welding auxiliary device according to claim 1, characterized in that: The first support frame (12) is provided with a support groove (121) for supporting the corresponding end of the side beam (4), and the first locking assembly comprises: A first locking member, provided on the first support frame (12) and used for abutting against the side plate (41) of the side beam (4); A second locking member, provided on the beam body (11) and used for abutting against the groove plate (42) of the side beam (4); A third locking member, provided on the beam body (11) and used for abutting against the side plate (41) of the side beam (4); The swinging member is arranged at the notch of the supporting groove (121) and is used to open and close the notch of the supporting groove (121).

4. The welding auxiliary device according to claim 1, characterized in that: The beam body (11) is provided with fixing heads (115) at two opposite ends along the first direction, and the second locking assembly comprises: a fifth locking member, disposed on the second support frame (22) and used for abutting against the fixing head (115) along a second direction; A sixth locking member is provided on the second support frame (22) and is used for abutting against the fixing head (115) along a third direction.

5. The welding auxiliary device according to claim 1, characterized in that: The supporting disc (32) comprises a first disc portion (321), a second disc portion (322) and a third disc portion (323); the outer circumferences of the first disc portion (321), the second disc portion (322) and the third disc portion (323) together form a full circular outer contour; and the first disc portion (321), the second disc portion (322) and the third disc portion (323) together enclose the mounting opening (3201); the second disc portion (322) and the third disc portion (323) are both rotatably disposed on the first disc portion (321); the second disc portion (322) and the third disc portion (323) can be rotated in a direction away from or close to each other to open and close the mounting opening (3201).

6. The welding auxiliary device according to claim 5, characterized in that: A first abutting portion (3221) is provided on a side of the second disc portion (322) facing the third disc portion (323); a second abutting portion (3231) is provided on a side of the third disc portion (323) facing the second disc portion (322); a first fixing hole is provided on the first abutting portion (3221); a second fixing hole (32311) is provided on the second abutting portion (32311); the first abutting portion (3221) is provided with an abutting protrusion (32211); and the second abutting portion is provided with an abutting groove (32312); When the second disk portion (322) and the third disk portion (323) rotate toward each other to close the mounting opening (3201), the first abutting portion (3221) abuts against the second abutting portion (3231), the abutting protrusion (32211) is inserted into the abutting groove (32312), the first fixing hole and the second fixing hole (32311) are arranged opposite to each other, and a fixing member passes through the first fixing hole and the second fixing hole (32311) to fix the first abutting portion (3221) and the second abutting portion (3231).

7. The welding auxiliary device according to claim 5, characterized in that: The third locking assembly comprises: a seventh locking member, provided on the first plate portion (321), and used for abutting against the side plate (41) of the side beam (4) along a second direction; an eighth locking member, provided on the first plate portion (321), and used for abutting against the beam body (11) along a third direction; A ninth locking member is provided on the second plate portion (322) and the third plate portion (323) and is used for abutting against the beam body (11) along a third direction.

8. The welding auxiliary device according to claim 5, characterized in that: At least three rollers (311) are rotatably provided on the support (31), and at least three rollers (311) are in rolling contact with the full circular outer contour, so that the supporting disc (32) is rotatably connected to the support (31).

9. The welding auxiliary device according to claim 1, characterized in that: The support disc (32) is fixedly provided with a support block (324) on the inner wall of the mounting opening (3201); the support block (324) is provided with two fixing plates (325) spaced apart along the second direction; each of the fixing plates (325) is threadedly connected with a first locking bolt (3251); the beam body (11) is correspondingly provided with a fixing portion (116), the fixing portion (116) is located between the two fixing plates (325); the first locking bolt (3251) is used to abut against the fixing portion (116) to lock the beam body (11) on the support block (324).

10. The welding auxiliary device according to claim 1, characterized in that: The beam body (11) is provided with two positioning plates (117) spaced apart along the second direction, each of the positioning plates (117) is threadedly connected with a second locking bolt (1171), and the support disc (32) is correspondingly provided with a positioning protrusion (326), the positioning protrusion (326) is located between the two positioning plates (117), and the second locking bolt (1171) is used to abut against the positioning protrusion (326) to lock the positioning protrusion (326) on the beam body (11).

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