Longitudinal beam welding device of vehicle

Abstract

The longitudinal beam welding device of the vehicle comprises a welding platform, a supporting table, a driving device, a first welding clamping piece and a second welding clamping piece, the welding platform is provided with a top face and a bottom face, and an avoiding hole penetrating through the top face and the bottom face is formed in the welding platform; the supporting table is arranged on the top face of the welding platform. The driving device is arranged on the bottom face of the welding platform and can drive the supporting table to move along the top face of the welding platform through the receding hole. The first welding clamping piece is used for fastening the longitudinal beam, the first welding clamping piece is connected to the top face of the welding platform, and the first welding clamping piece and the supporting table are arranged at an interval; the second welding clamping piece is used for fastening the longitudinal beam, connected to the supporting table and capable of synchronously getting close to or getting away from the first welding clamping piece along with the supporting table. According to the scheme, the longitudinal beam welding device of the vehicle can be suitable for longitudinal beams of different lengths, and the general applicability of the longitudinal beam welding device is improved; the movement stability of the supporting table relative to the welding platform can be guaranteed, and the influence of welding on longitudinal beam deformation is reduced.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a longitudinal beam welding device for a vehicle. Background Art

[0002] For non-load-bearing vehicle bodies, the frame longitudinal beam is a large component that plays the most critical role in the load-bearing and assembly process. The difficulty of its design and production process is also recognized by the industry. However, in an existing project of longitudinal beam development and design, there are problems such as poor applicability leading to excessive cost investment, longitudinal beam deformation caused by welding, and low precision of parts making longitudinal beam assembly difficult and affecting production efficiency. How to design an effective longitudinal beam welding device is one of the important topics that are constantly being tackled and considered. Utility Model Content

[0003] The purpose of the present application is to provide a longitudinal beam welding device for a vehicle, which is not only applicable to longitudinal beams of different lengths and improves the universal applicability of the longitudinal beam welding device; it can also ensure the stability of the movement of the support platform relative to the welding platform and reduce the impact of welding on the deformation of the longitudinal beam.

[0004] The first aspect of the present application discloses a longitudinal beam welding device for a vehicle, comprising: a welding platform, a support platform, a driving device, a first welding clamp and a second welding clamp, the welding platform having a top surface and a bottom surface arranged opposite to each other along a first direction, the welding platform being provided with an avoidance hole penetrating the top surface and the bottom surface; the support platform being arranged on the top surface of the welding platform; the driving device being arranged on the bottom surface of the welding platform, and being able to drive the support platform to move along the top surface of the welding platform through the avoidance hole; the first welding clamp being used for fastening the longitudinal beam, the first welding clamp being connected to the top surface of the welding platform, and being spaced apart from the support platform; the second welding clamp being used for fastening the longitudinal beam, the second welding clamp being connected to the support platform, and being able to approach or move away from the first welding clamp synchronously with the support platform.

[0005] In an exemplary embodiment of the present application, the driving device is a screw structure, and the nut of the screw structure is arranged corresponding to the avoidance hole and is connected to the support platform.

[0006] In an exemplary embodiment of the present application, the welding platform is provided with a sliding groove, the sliding groove is spaced apart from the avoidance hole, the support platform includes a mounting portion and a protrusion portion connected to the mounting portion, the protrusion portion is located in the sliding groove and can slide along the groove wall of the sliding groove.

[0007] In an exemplary embodiment of the present application, the sliding groove includes a first side groove wall and a second side groove wall that are relatively arranged, and the distance between the first side groove wall and the second side groove wall gradually increases from the top surface of the welding platform toward the bottom surface of the welding platform; the protrusion portion is adapted to be installed in the sliding groove and fits with the first side groove wall and the second side groove wall.

[0008] In an exemplary embodiment of the present application, the welding platform is provided with two sliding grooves, which are arranged one-to-one on two opposite sides of the avoidance hole; the support platform includes two protrusion parts, which are both connected to the mounting part and are located one-to-one in the sliding grooves.

[0009] In an exemplary embodiment of the present application, the longitudinal beam welding device also includes a first limit member and a second limit member connected to the welding platform, the first limit member and the second limit member are arranged on two opposite sides of the avoidance hole in a one-to-one manner, the first limit member is provided with a first limit groove along the first direction between the welding platform, and the second limit member is provided with a second limit groove along the first direction between the welding platform; one side of the support platform is provided in the first limit groove, and the other side of the support platform is provided in the second limit groove.

[0010] In an exemplary embodiment of the present application, the longitudinal beam welding device includes a plurality of the first welding clamps spaced apart from each other, and at least some of the first welding clamps include a bearing portion, a "U"-shaped positioning portion and a pressing portion, the bearing portion is connected to the welding platform and the "U"-shaped positioning portion; the pressing portion is connected to the welding platform or the bearing portion, and can be moved away from or close to the opening of the "U"-shaped positioning portion.

[0011] In an exemplary embodiment of the present application, the longitudinal beam welding device includes a plurality of second welding clamps arranged at intervals from each other, at least some of the first welding clamps among the plurality of first welding clamps are provided with first positioning pins, and at least some of the second welding clamps among the plurality of second welding clamps are provided with second positioning pins, and the first positioning pins and the second positioning pins are used to position the longitudinal beam.

[0012] In an exemplary embodiment of the present application, a plurality of the first welding clamps and a plurality of the second welding clamps are arranged in pairs along a second direction, the second direction intersects with the first direction, and some of the first welding clamps in the plurality of the first welding clamps are staggered along the second direction; and\or, some of the second welding clamps in the plurality of the second welding clamps are staggered along the second direction.

[0013] In an exemplary embodiment of the present application, some of the first welding clamps among the plurality of the first welding clamps have different heights along the first direction; and\or, some of the second welding clamps among the plurality of the second welding clamps have different heights along the first direction.

[0014] The beneficial effects of this application scheme are:

[0015] In the embodiment of the present application, since the first welding clamp is connected to the top surface of the welding platform, the second welding clamp is connected to the support platform, and the support platform can move along the top surface of the welding platform through the driving device, the second welding clamp can be synchronously approached or moved away from the first welding clamp with the support platform to adjust the distance between the first welding clamp and the second welding clamp, thereby making the longitudinal beam welding device of the vehicle applicable to longitudinal beams of different lengths, thereby improving the universal applicability of the longitudinal beam welding device. In addition, the driving device is arranged on the bottom surface of the welding platform, and drives the support platform to move along the top surface of the welding platform through the avoidance hole, so that the support platform and the welding platform can be more closely fitted to ensure the stability of the support platform relative to the welding platform; at the same time, the installation space of the top surface of the welding platform is saved, so that more first welding clamps can be installed on the top surface of the welding platform, and the longitudinal beam can be clamped more effectively, thereby reducing the influence of welding on the deformation of the longitudinal beam.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional structural schematic diagram of the connection between the longitudinal beam welding device and the longitudinal beam of the vehicle in an embodiment of the present application is shown.

[0018] Figure 2 A front view structural schematic diagram of the connection between the longitudinal beam welding device and the longitudinal beam of the vehicle in an embodiment of the present application is shown.

[0019] Figure 3 A schematic diagram of the top view of the structure of the connection between the longitudinal beam welding device and the longitudinal beam of the vehicle in an embodiment of the present application is shown.

[0020] Figure 4 A three-dimensional structural schematic diagram of a longitudinal beam welding device for a vehicle in an embodiment of the present application is shown.

[0021] Figure 5 The present application embodiment is shown Figure 4 Schematic diagram of the enlarged structure of the longitudinal beam welding device A of the vehicle.

[0022] Figure 6 The present application embodiment is shown Figure 4Schematic diagram of the enlarged structure of the longitudinal beam welding device B of the vehicle.

[0023] Figure 7 A partial structural schematic diagram of a longitudinal beam welding device for a vehicle in an embodiment of the present application is shown.

[0024] Among them, 1. welding platform; 101. avoidance hole; 102. sliding groove; 11. top surface; 12. bottom surface; 2. support platform; 21. installation part; 3. driving device; 31. screw rod; 32. nut; 33. fixing part; 4. first welding clamping member; 41. bearing part; 42. "U"-shaped positioning part; 421. first positioning part; 422. second positioning part; 423. third positioning part; 43. pressing part; 44. first positioning pin; 5. second welding clamping member; 51. second positioning pin; 6. longitudinal beam; 61. front section; 62. middle section; 63. rear section; 7. first limiting member; 8. second limiting member; 9. reinforcement member; 91. first reinforcement member; 92. second reinforcement member; 93. third reinforcement member; 94. fourth reinforcement member; 95. fifth reinforcement member; a. first direction; b. second direction. DETAILED DESCRIPTION

[0025] The following will describe the implementation of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0027] like Figures 1 to 7As shown, this embodiment proposes a longitudinal beam welding device for a vehicle, comprising: a welding platform 1, a support platform 2, a driving device 3, a first welding clamp 4 and a second welding clamp 5, the welding platform 1 has a top surface 11 and a bottom surface 12 arranged opposite to each other along a first direction a, and the welding platform 1 is provided with an avoidance hole 101 penetrating the top surface 11 and the bottom surface 12; the support platform 2 is arranged on the top surface 11 of the welding platform 1; the driving device 3 is arranged on the bottom surface 12 of the welding platform 1, and can drive the support platform 2 to move along the top surface 11 of the welding platform 1 through the avoidance hole 101; the first welding clamp 4 is used to fasten the longitudinal beam 6, the first welding clamp 4 is connected to the top surface 11 of the welding platform 1, and is spaced apart from the support platform 2; the second welding clamp 5 is used to fasten the longitudinal beam 6, the second welding clamp 5 is connected to the support platform 2, and can approach or move away from the first welding clamp 4 synchronously with the support platform 2.

[0028] In this embodiment, since the first welding clamp 4 is connected to the top surface 11 of the welding platform 1, the second welding clamp 5 is connected to the support platform 2, and the support platform 2 can move along the top surface 11 of the welding platform 1 through the driving device 3, the second welding clamp 5 can be synchronously approached or moved away from the first welding clamp 4 with the support platform 2 to adjust the distance between the first welding clamp 4 and the second welding clamp 5, thereby making the longitudinal beam welding device of the vehicle applicable to longitudinal beams 6 of different lengths, thereby improving the universal applicability of the longitudinal beam welding device. In addition, the driving device 3 is arranged on the bottom surface 12 of the welding platform 1, and drives the support platform 2 to move along the top surface 11 of the welding platform 1 through the avoidance hole 101, so that the support platform 2 and the welding platform 1 can be more closely fitted to ensure the stability of the movement of the support platform 2 relative to the welding platform 1; at the same time, the installation space of the top surface 11 of the welding platform 1 is saved, so that more first welding clamps 4 can be installed on the top surface 11 of the welding platform 1, and the longitudinal beam 6 can be clamped more effectively, thereby reducing the influence of welding on the deformation of the longitudinal beam 6.

[0029] In this embodiment, the first direction a is the height direction of the welding platform 1. The welding platform 1 is the base of the entire longitudinal beam welding device, and can provide a reliable and stable carrier for the longitudinal beam welding device to ensure the normal welding of the longitudinal beam 6.

[0030] Combination Figure 1 , Figure 2 and Figure 7 As shown, the driving device 3 is a screw structure, and the nut 32 of the screw structure is arranged corresponding to the avoidance hole 101 and is connected to the support platform 2.

[0031] In this embodiment, the screw rod structure includes a screw rod 31, a nut 32 and a fixing member 33. The screw rod 31 is sequentially inserted into the welding platform 1, the nut 32 and the fixing member 33. The fixing member 33 is connected to the bottom surface 12 of the welding platform 1. One end of the screw rod 31 is located inside the welding platform 1 and connected to the fixing member 33. The other end of the screw rod 31 is located outside the welding platform 1. When the screw rod 31 rotates, the nut 32 moves forward or backward on the screw rod 31, thereby realizing the movement of the support platform 2 relative to the welding platform 1.

[0032] Specifically, when the screw rod 31 is rotated to increase the length of the screw rod 31 located outside the welding platform 1, the nut 32 connected to the screw rod 31 drives the support platform 2 to move away from the first welding clamp 4, thereby increasing the distance between the first welding clamp 4 and the second welding clamp 5, and achieving the lengthening of the welding position of the longitudinal beam 6; when the screw rod 31 is rotated in the opposite direction to reduce the length of the screw rod 31 located outside the welding platform 1, the nut 32 connected to the screw rod 31 drives the support platform 2 to move closer to the first welding clamp 4, thereby reducing the distance between the first welding clamp 4 and the second welding clamp 5, and achieving the shortening of the welding position of the longitudinal beam 6.

[0033] In this embodiment, combined with Figure 7 As shown, the avoidance hole 101 can not only prevent the nut 32 from interfering with the welding platform 1, but also the inside of the welding platform 1 can be observed through the avoidance hole 101, so as to facilitate the adjustment and maintenance of the inside of the welding platform 1.

[0034] Combination Figure 1 As shown, the welding platform 1 is provided with a sliding groove 102, which is spaced apart from the avoidance hole 101. The support platform 2 includes a mounting portion 21 and a protrusion portion connected to the mounting portion 21. The protrusion portion is located in the sliding groove 102 and can slide along the groove wall of the sliding groove 102.

[0035] In this embodiment, the welding platform 1 is provided with a sliding groove 102 along the length direction of the welding platform 1, and the convex block portion of the support platform 2 is located in the sliding groove 102 and slides along the groove wall of the sliding groove 102, so that the support platform 2 can slide relative to the welding platform 1 along the length direction of the welding platform 1, adjust the distance between the first welding clamp 4 and the second welding clamp 5, and then adjust the length of the longitudinal beam 6 clamped by the longitudinal beam welding device, thereby improving the universal applicability of the longitudinal beam welding device and reducing investment costs. In addition, the convex block portion of the support platform 2 slides with the groove wall of the sliding groove 102, so that the support platform 2 slides more smoothly relative to the welding platform 1, so as to ensure the stability of the movement of the support platform 2 relative to the welding platform 1.

[0036] In this embodiment, combined with Figure 1 As shown, the mounting portion 21 is a flat plate with a rectangular cross section, and the mounting portion 21 is used to mount the second welding clamp 5 .

[0037] In this embodiment, the sliding groove 102 includes a first side groove wall and a second side groove wall that are arranged opposite to each other, and the distance between the first side groove wall and the second side groove wall gradually increases from the top surface 11 of the welding platform 1 toward the bottom surface 12 of the welding platform 1; the convex block portion is adapted to be installed in the sliding groove 102 and fits with the first side groove wall and the second side groove wall. The distance between the first side groove wall and the second side groove wall of the sliding groove 102 gradually increases from the top surface 11 of the welding platform 1 toward the bottom surface 12 of the welding platform 1, that is, the sliding groove 102 is a "trapezoidal" structure. Compared with the conventional "rectangular" structure, the sliding groove 102 has a more reliable limit on the convex block portion to ensure the stability of the movement of the support platform 2 relative to the welding platform 1.

[0038] It should be understood that, since the protrusion is adapted to be installed in the sliding groove 102 and fits with the first side groove wall and the second side groove wall, the protrusion should also be a "trapezoidal" structure and match the "trapezoidal" structure of the sliding groove 102 to ensure the stability of the movement of the support platform 2 relative to the welding platform 1. At the same time, since both the sliding groove 102 and the protrusion are "trapezoidal" structures, the protrusion of the support platform 2 can only be installed in the sliding groove 102 of the welding platform 1 along the first direction a.

[0039] Combination Figure 1 As shown, the welding platform 1 is provided with two sliding grooves 102 , which are arranged one by one on two opposite sides of the avoidance hole 101 ; the support platform 2 includes two protrusions, which are both connected to the mounting portion 21 and are located one by one in the sliding grooves 102 .

[0040] In this embodiment, when the driving device 3 drives the support table 2 to move along the top surface 11 of the welding platform 1 through the avoidance hole 101, the two sliding grooves 102 located on the two opposite sides of the avoidance hole 101 can ensure that the support table 2 moves more smoothly on the welding platform 1, which is convenient for the longitudinal beam welding device to adjust the distance between the first welding clamp 4 and the second welding clamp 5 according to the length of the longitudinal beam 6, thereby improving the welding efficiency of the longitudinal beam 6.

[0041] Combination Figure 1 As shown, the longitudinal beam welding device also includes a first limit member 7 and a second limit member 8 connected to the welding platform 1. The first limit member 7 and the second limit member 8 are arranged on two opposite sides of the avoidance hole 101 in a one-to-one manner. A first limit groove is provided between the first limit member 7 and the welding platform 1 along the first direction a, and a second limit groove is provided between the second limit member 8 and the welding platform 1 along the first direction a; one side of the mounting portion 21 is provided in the first limit groove, and the other side of the mounting portion 21 is provided in the second limit groove.

[0042] In this embodiment, when the support platform 2 moves on the welding platform 1, the first limiting groove of the first limiting member 7 and the second limiting groove of the second limiting member 8 can effectively limit the mounting portion 21 of the support platform 2 to ensure the stability of the movement of the support platform 2 relative to the welding platform 1. In addition, in order to ensure better limiting of the mounting portion 21, the longitudinal beam welding device includes three mutually spaced first limiting members 7 and three mutually spaced second limiting members 8, and the three first limiting members 7 and the three second limiting members 8 are arranged in a one-to-one correspondence to jointly limit the movement of the mounting portion 21 on the welding platform 1.

[0043] In this embodiment, combined with Figure 1 As shown, the longitudinal beam 6 includes a front section 61, a middle section 62 and a rear section 63, the middle section 62 is connected between the front section 61 and the rear section 63, and the front section 61, the middle section 62 and the rear section 63 need to be welded to form a complete longitudinal beam 6; wherein, the front section 61 and the middle section 62 are clamped by the first welding clamp 4, and the rear section 63 is clamped by the second welding clamp 5.

[0044] It should be understood that since the longitudinal beam welding device is suitable for the longitudinal beam 6 developed for the same platform vehicle model, it mainly lengthens the straight portion of the rear section 63 appropriately. Therefore, the longitudinal beam welding device moves on the welding platform 1 through the support platform 2 to match the length of the rear section 63.

[0045] Combination Figure 1 As shown, the longitudinal beam welding device includes a plurality of first welding clamps 4 spaced apart from each other, at least some of the plurality of first welding clamps 4 include a bearing portion 41, a "U"-shaped positioning portion 42 and a clamping portion 43, the bearing portion 41 is connected to the welding platform 1 and the "U"-shaped positioning portion 42; the clamping portion 43 is connected to the welding platform 1 or the bearing portion 41, and can be away from or close to the opening of the "U"-shaped positioning portion 42.

[0046] In this embodiment, the bearing portion 41 is used to support the longitudinal beam 6. After the longitudinal beam 6 is placed on the bearing portion 41, the longitudinal beam 6 is clamped to the bearing portion 41 by the clamping portion 43, so that the longitudinal beam 6 is clamped and fixed on the first welding clamp 4 to facilitate subsequent welding operations on the longitudinal beam 6.

[0047] Specifically, when the first welding clamp 4 is opened, the clamping portion 43 moves away from the opening of the "U"-shaped positioning portion 42 and the load-bearing portion 41; when the first welding clamp 4 is closed, the clamping portion 43 moves close to the opening of the "U"-shaped positioning portion 42 and the load-bearing portion 41, and is connected to the front section 61 and the middle section 62 of the longitudinal beam 6.

[0048] In this embodiment, combined with Figure 2As shown, two of the plurality of first welding clamps 4 include a bearing portion 41 , a “U”-shaped positioning portion 42 and a pressing portion 43 , and the other first welding clamps 4 only include a bearing portion 41 and a pressing portion 43 .

[0049] Specifically, when the longitudinal beam 6 is installed to the first welding clamp 4, the two ends of the middle section 62 are first pre-installed into the two "U"-shaped positioning portions 42 respectively, and then one end of the front section 61 is pre-installed into one "U"-shaped positioning portion 42, and one end of the rear section 63 is pre-installed into the other "U"-shaped positioning portion 42, so as to realize the pre-installation of the longitudinal beam 6; at the same time, the "U"-shaped positioning portion 42 can also prevent the longitudinal beam 6 from being deformed due to welding to a certain extent.

[0050] In this embodiment, combined with Figure 2 and Figure 6 As shown, the "U"-shaped positioning portion 42 includes a first positioning portion 421, a second positioning portion 422 and a third positioning portion 423. The first positioning portion 421 and the third positioning portion 423 are connected to two opposite sides of the second positioning portion 422 one by one. The second positioning portion 422 is connected to the bearing portion 41. The second positioning portion 422 is used to place the longitudinal beam 6. The first positioning portion 421 and the third positioning portion 423 can limit the longitudinal beam 6.

[0051] In this embodiment, combined with Figure 5 and Figure 6 As shown, the longitudinal beam welding device includes a plurality of second welding clamps 5 spaced apart from each other, and the second welding clamps 5 also include a bearing portion 41 and a pressing portion 43 .

[0052] Combination Figure 5 and Figure 6 As shown, at least some of the first welding clamps 4 are provided with first positioning pins 44 , and at least some of the second welding clamps 5 are provided with second positioning pins 51 . The first positioning pins 44 and the second positioning pins 51 are used to position the longitudinal beam 6 .

[0053] In this embodiment, five of the multiple first welding clamps 4 are provided with first positioning pins 44, the front section 61 is positioned and installed on the first welding clamp 4 by two first positioning pins 44, and the middle section 62 is positioned and installed on the first welding clamp 4 by three first positioning pins 44, so as to achieve precise positioning of the front section 61 and the middle section 62; three of the multiple second welding clamps 5 are provided with second positioning pins 51, and the rear section 63 is positioned and installed on the second welding clamp 5 by three second positioning pins 51, so as to achieve precise positioning of the rear section 63.

[0054] It should be understood that the plurality of first welding clamps 4 and the plurality of second welding clamps 5 all include a bearing portion 41 and a pressing portion 43, but some of the first welding clamps 4 also include a "U"-shaped positioning portion 42 and / or a first positioning pin 44, and some of the second welding clamps 5 also include a second positioning pin 51, and the specific structures of the first welding clamps 4 and the second welding clamps 5 can be selected according to the actual welding conditions. In addition, the number of the first welding clamps 4 and the second welding clamps 5 and the number of the "U"-shaped positioning portions 42, the first positioning pins 44, and the second positioning pins 51 can be selected according to the actual welding conditions.

[0055] In this embodiment, combined with Figure 4 As shown, a plurality of first welding clamps 4 and a plurality of second welding clamps 5 are arranged in pairs along the second direction b, the second direction b intersects with the first direction a, and some of the first welding clamps 4 among the plurality of first welding clamps 4 are staggered along the second direction b; and\or, some of the second welding clamps 5 among the plurality of second welding clamps 5 are staggered along the second direction b to match the longitudinal beam 6 according to the shape of the longitudinal beam 6.

[0056] In this embodiment, the second direction b is the length direction of the welding platform 1 .

[0057] It should be understood that, since the longitudinal beam 6 is to match the wheelbase of the vehicle, the longitudinal beam 6 has a certain height difference in the width direction of the welding platform 1. In order to match the longitudinal beam 6, some of the first welding clamps 4 and the second welding clamps 5 should be staggered along the second direction b, and some of the second welding clamps 5 should also be staggered along the second direction b, so as to clamp and fix the longitudinal beam 6.

[0058] In this embodiment, combined with Figure 2 As shown, some of the first welding clamps 4 in the plurality of first welding clamps 4 have different heights along the first direction a; and / or, some of the second welding clamps 5 in the plurality of second welding clamps 5 have different heights along the first direction a. The first welding clamps 4 and the second welding clamps 5 have different heights along the first direction a to match the longitudinal beam 6 according to the shape of the longitudinal beam 6.

[0059] It should be understood that, since the longitudinal beam 6 is used to match the front and rear overhangs of the vehicle, the longitudinal beam 6 has a certain height difference in the first direction a. In order to match the longitudinal beam 6, the first welding clamps 4 and the second welding clamps 5 should adjust the heights of the first direction a to clamp and fix the longitudinal beam 6.

[0060] In this embodiment, combined with Figure 3 As shown, after the front section 61, the middle section 62 and the rear section 63 are welded, some of the first welding clamps 4 and the second welding clamps 5 can be opened, and the other first welding clamps 4 and the second welding clamps 5 keep clamping the longitudinal beam 6, and the reinforcement 9 for improving the rigidity performance of the longitudinal beam 6 is welded on the inner side surface of the front section 61, the middle section 62 and the rear section 63 to meet the rigidity durability requirements of the longitudinal beam 6 of the high-load-bearing vehicle model.

[0061] Specifically, the reinforcement 9 includes a first reinforcement 91, a second reinforcement 92, a third reinforcement 93, a fourth reinforcement 94 and a fifth reinforcement 95. The first reinforcement 91, the second reinforcement 92 and the third reinforcement 93 are all connected to the inner side surface of the middle section 62, and the fourth reinforcement 94 and the fifth reinforcement 95 are both connected to the inner side surface of the rear section 63.

[0062] In summary, the welding steps of the longitudinal beam welding device of the vehicle are as follows: first, place the longitudinal beam welding device on a flat ground with sufficient space, open the first welding clamp 4 and the second welding clamp 5, and the single stamping parts of the front section 61, the middle section 62 and the rear section 63 are inspected and accepted; second, first, observe the positions of the two "U"-shaped positioning parts 42, determine the pre-installation position of the middle section 62, and then determine the positions of the front section 61 and the rear section 63; then, according to the position of the first positioning pin 44, pass the front section 61 and the middle section 62 through the first positioning pin 44. 44 is placed on the bearing portion 41; secondly, according to the position of the second positioning pin 51, the rear section 63 is passed through the second positioning pin 51 and placed on the bearing portion 41; finally, the first welding clamp 4 and the second welding clamp 5 are all closed and pressed to realize the positioning of the front section 61, the middle section 62 and the rear section 63 on the first welding clamp 4 and the second welding clamp 5; thirdly, the rear section 63 is first connected with one end of the middle section 62 in the "U"-shaped positioning portion 42 by two welding sections, and then the other end of the middle section 62 is connected with the front section 61 in the "U"-shaped positioning portion 42. The inner two-section welding is connected, and finally the welding effect is visually inspected; Fourth, the first welding clamp 4 and the second welding clamp 5 of the area where the reinforcement 9 is to be added are opened, and the other first welding clamps 4 and the second welding clamps 5 are kept closed and pressed to ensure that the positions of the front section 61, the middle section 62, and the rear section 63 do not move during the whole process, and then the first reinforcement 91, the second reinforcement 92 and the third reinforcement 93 are placed on the inner side of the middle section 62, the fourth reinforcement 94 and the fifth reinforcement 95 are placed on the inner side of the rear section 63, and then the above reinforcement 91, the second reinforcement 92 and the third reinforcement 93 are placed on the inner side of the middle section 62, and the fourth reinforcement 94 and the fifth reinforcement 95 are placed on the inner side of the rear section 63. The opened first welding clamp 4 and the opened second welding clamp 5 are reclosed and clamped to realize the positioning and clamping of the reinforcement 9 on the longitudinal beam 6; fifthly, considering the influence of welding deformation, welding is performed in the order of the third reinforcement 93, the fourth reinforcement 94, the second reinforcement 92, the fifth reinforcement 95 and the first reinforcement 91 to ensure the optimal deformation of the longitudinal beam 6 after welding; finally, the weld is supplemented according to the design status requirements of the longitudinal beam 6, and after visual inspection, all the first welding clamps 4 and the second welding clamps 5 are opened to complete the welding operation of the longitudinal beam 6.

[0063] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A longitudinal beam welding device for a vehicle, characterized in that: include: A welding platform, the welding platform having a top surface and a bottom surface arranged opposite to each other along a first direction, and the welding platform is provided with an avoidance hole penetrating the top surface and the bottom surface; A support platform, the support platform is arranged on the top surface of the welding platform; A driving device, which is disposed on the bottom surface of the welding platform and can drive the support platform to move along the top surface of the welding platform through the avoidance hole; A first welding clamp, the first welding clamp is used to fasten the longitudinal beam, the first welding clamp is connected to the top surface of the welding platform and is spaced apart from the support platform; The second welding clamp is used to fasten the longitudinal beam. The second welding clamp is connected to the support platform and can move synchronously with the support platform toward or away from the first welding clamp.

2. The longitudinal beam welding device according to claim 1, characterized in that: The driving device is a screw structure, and the nut of the screw structure is arranged corresponding to the avoidance hole and is connected to the support platform.

3. The longitudinal beam welding device according to claim 1, characterized in that: The welding platform is provided with a sliding groove, and the sliding groove is spaced apart from the avoidance hole. The support platform includes a mounting portion and a convex block portion connected to the mounting portion. The convex block portion is located in the sliding groove and can slide along the groove wall of the sliding groove.

4. The longitudinal beam welding device according to claim 3, characterized in that: The sliding groove comprises a first side groove wall and a second side groove wall which are arranged opposite to each other, and the distance between the first side groove wall and the second side groove wall gradually increases from the top surface of the welding platform toward the bottom surface of the welding platform; The convex block is adapted to be installed in the sliding groove and fits with the first side groove wall and the second side groove wall.

5. The longitudinal beam welding device according to claim 3, characterized in that: The welding platform is provided with two sliding grooves, and the two sliding grooves are arranged one by one at two opposite sides of the avoidance hole; The support platform includes two protruding block portions, both of which are connected to the mounting portion and are located in the sliding groove in a one-to-one correspondence.

6. The longitudinal beam welding device according to claim 1, characterized in that: The longitudinal beam welding device further includes a first limiter and a second limiter connected to the welding platform, the first limiter and the second limiter are arranged on two opposite sides of the avoidance hole in a one-to-one correspondence, a first limiter groove is arranged between the first limiter and the welding platform along the first direction, and a second limiter groove is arranged between the second limiter and the welding platform along the first direction; One side of the support platform is arranged in the first limiting groove, and the other side of the support platform is arranged in the second limiting groove.

7. The longitudinal beam welding device according to claim 1, characterized in that: The longitudinal beam welding device includes a plurality of the first welding clamps spaced apart from each other, and at least some of the first welding clamps include a bearing portion, a "U"-shaped positioning portion and a pressing portion, wherein the bearing portion is connected to the welding platform and the "U"-shaped positioning portion; the pressing portion is connected to the welding platform or the bearing portion, and can be away from or close to the opening of the "U"-shaped positioning portion.

8. The longitudinal beam welding device according to claim 7, characterized in that: The longitudinal beam welding device includes a plurality of second welding clamps spaced apart from each other, at least some of the first welding clamps are provided with first positioning pins, and at least some of the second welding clamps are provided with second positioning pins, and the first positioning pins and the second positioning pins are used to position the longitudinal beam.

9. The longitudinal beam welding device according to claim 8, characterized in that: The plurality of first welding clamps and the plurality of second welding clamps are arranged in pairs along a second direction, the second direction intersects the first direction, and some of the plurality of first welding clamps are staggered along the second direction; And\or, some of the second welding clamps among the plurality of second welding clamps are staggered along the second direction.

10. The longitudinal beam welding device according to claim 9, characterized in that: Some of the first welding clamps among the plurality of the first welding clamps have different heights along the first direction; and\or, some of the second welding clamps among the plurality of the second welding clamps have different heights along the first direction.

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