Pre-splicing type welding platform

Abstract

The utility model discloses a pre-splicing type welding platform, which belongs to the technical field of welding processing, and comprises a bottom frame, a working table, a fixed limiting structure and a movable limiting structure, the fixed limiting structure and the movable limiting structure are installed on the workbench. The fixed limiting structure comprises a front side fixed limiting structure and a rear side fixed limiting structure; the movable limiting mechanism comprises a left movable limiting structure and a right movable limiting structure. By means of the modular design, the welding device has the functions of being fast to build, flexible to adjust and capable of being pre-spliced in advance to stably fix welding parts in the front, back, left and right directions, and the welding efficiency and precision are greatly improved. The adjustable limiting structure adapts to workpieces of different sizes and shapes, so that the platform can cope with various welding tasks.

Description

Technical Field

[0001] The utility model relates to the technical field of welding processing, in particular to a pre-assembled welding platform. Background Art

[0002] The connection and fixation of plates usually adopt welding technology. During welding operation, the stability and accuracy of the welding platform directly affect the quality of welded parts. Traditional welding platforms are often complex in structure and difficult to adjust. There may also be the need to weld on multiple platforms and it is impossible to weld on the same platform, which is difficult to meet the requirements of modern welding operations in terms of efficiency and accuracy. Therefore, the development of a pre-assembled adjustable limit welding platform has become an urgent need in the industry. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of the utility model is to provide a pre-assembled welding platform, which has the functions of rapid construction, flexible adjustment, and pre-assembly in advance to stably fix the welded parts from the front, back, left and right directions through modular design, greatly improving the welding efficiency and accuracy. The adjustable limit structure adapts to workpieces of different sizes and shapes, so that the platform can cope with a variety of welding tasks.

[0004] Technical solution: The utility model provides a pre-assembled welding platform including: a chassis, a workbench, a fixed limiting structure, and a movable limiting structure; the workbench is installed on the chassis; the fixed limiting structure includes a front fixed limiting structure and a rear fixed limiting structure, the front fixed limiting structure is installed on the front side of the workbench, and the rear fixed limiting structure is installed on the rear side of the workbench; the movable limiting structure includes a left movable limiting structure and a right movable limiting structure, the left movable limiting structure is installed on the left side of the workbench, and the right movable limiting structure is installed on the right side of the workbench. The fixed limiting structure is used to limit the movement of the weldment in the front and rear directions to ensure the accurate position of the weldment during the welding process. The movable limiting structure is different from the fixed limiting structure. The movable limiting structure can adjust its position as needed to limit the left and right positions of the weldment.

[0005] Furthermore, the workbench includes: a top plate, a bottom plate, and a supporting component, and the top plate and the bottom plate are connected by the supporting component.

[0006] Furthermore, the rear side fixed limiting structure includes: a first supporting platform and a first driving limiting assembly, the first supporting platform is installed on the top plate, the first driving limiting assembly includes at least one first driving limiting assembly cylinder and at least one first driving limiting assembly pressure block; the first driving limiting assembly cylinder is fixed on the first supporting platform, and the first driving limiting assembly pressure block is connected to the output end of the first driving limiting assembly cylinder.

[0007] Furthermore, the first support platform includes at least one rear support plate and a first vertical pressing plate, and a positioning hole is provided on the first vertical pressing plate. The first welding part is pre-fixed on the first vertical pressing plate by inserting a positioning pin into the positioning hole, and the first welding part is clamped by the first driving limit assembly pressure block. The positioning pin is inserted into the positioning hole to pre-position the first welding part, and then the cylinder telescopic pressure block is used to clamp the first welding part for adjustment, so that the limiting of the first welding part is more accurate.

[0008] Furthermore, the front side fixed limiting structure includes a first limiting component, a second limiting component, a first limiting support plate, and a second limiting support plate; the first limiting component is installed on the top plate, the second limiting component is installed on the workbench, the first limiting support plate and the second limiting support plate are installed on the top plate, and are relatively arranged on both sides of the second limiting component, and positioning holes are provided on the first limiting support plate and the second limiting support plate, and the fifth welding part and the fourth welding part are respectively fixed on the first limiting support plate and the second limiting support plate by inserting the positioning pins into the positioning holes.

[0009] Further, the first limiting component includes a first limiting component support plate platform, a group of second drive limiting components, and at least one first gasket; the first limiting component support plate platform is installed on the top plate, the first limiting component support plate platform includes at least one first limiting component support plate and a first limiting component pressure plate, the first limiting component pressure plate is provided with a positioning hole and a first gasket, the first limiting component support plate is installed on the top plate, and the first limiting component pressure plate is arranged on the top of the first limiting component support plate; the second drive limiting component includes at least one second drive limiting component cylinder and at least one second drive limiting component pressure block, the second drive limiting component cylinder is arranged below the first limit component pressure plate, the output end of the second drive limiting component cylinder is connected to the second drive limiting component pressure block, the sixth welding part is pre-fixed on the first limiting component support plate platform by a positioning pin, and the corresponding second drive limiting component pressure block is driven by the second drive limiting component cylinder to clamp the sixth welding part. The first limiting component support plate platform can support the sixth welded part, keep the sixth welded part at the same level, and then cooperate with the second driving limiting component cylinder to drive the second driving limiting component pressure block to clamp the sixth welded part to fix it, thereby improving the welding effect. The first gasket can serve as a supporting structure to help maintain the stability and shape of the sixth welded part.

[0010] Further, the second limiting component includes a second limiting component upper support plate platform, a second limiting component lower support plate platform, at least one second gasket, a second limiting component cylinder, and a second limiting component pressure block. The second limiting component upper support plate platform is installed above the top plate, the second limiting component lower support plate platform is installed on the bottom plate, a positioning hole is provided on the second limiting component upper support plate platform, the second limiting component cylinder is installed on the second limiting component lower support plate platform, the second limiting component pressure block is connected to the output end of the second limiting component cylinder and is located above the second limiting component upper support plate platform, a positioning hole and a second gasket are provided above the second limiting component upper support plate platform, the seventh welding piece is placed on the second limiting component upper support plate platform, the positioning pin is inserted into the positioning hole to pre-limit the seventh welding piece, and then the second limiting component cylinder drives the second limiting component pressure block to clamp the seventh welding piece. The second limiting component upper support plate platform can support the seventh welding piece, keep the seventh welding piece at the same level, and then cooperate with the second limiting component cylinder to extend and retract the second limiting component pressure block to clamp the seventh welding piece to fix it, thereby improving the welding effect. The second spacer may serve as a supporting structure to help maintain the stability and shape of the seventh welded part.

[0011] Furthermore, the movable limit structure on the left side is identical to the movable limit structure on the right side and is symmetrical to each other. Both the movable limit structure on the left side and the movable limit structure on the right side include a driving component, a moving component, and a limiting component. The driving component is mounted on the top plate, and the moving component is mounted on the bottom plate. The limiting component passes through the top plate moving component for movable connection. The output end of the driving component is connected to the limiting component, and the limiting component is driven to limit the second welding part. The moving component is mounted on the bottom plate, and its main function is to provide a moving function. The driving component drives the limiting component to achieve precise limiting of the second welding part or the third welding part. This drive can be manual or automatic. The driving components and limiting components on the left and right sides are designed the same, which means that they can be used interchangeably, increasing the flexibility of the platform. When workpieces of different widths or shapes need to be welded, this design can be quickly adjusted to adapt to different welding tasks.

[0012] Furthermore, the driving assembly includes a driving assembly support platform and a telescopic driving mechanism, the telescopic driving mechanism is mounted on the driving assembly support platform, and the driving assembly support platform is mounted on the top plate; the moving assembly includes at least one slide rail, at least one limit connection slider, and a slide rail plane support plate, the slide rail is mounted on the bottom plate, the limit connection slider is slidably connected to the slide rail, the slide rail plane support plate is mounted on the limit connection slider, and the lower end of the limit assembly is connected to the slide rail plane support plate. The slide rail plane support plate provides a stable platform for installing and adjusting the limit assembly to achieve precise limit of the second weldment or the third weldment.

[0013] Further, the limiting assembly includes a third driving limiting assembly, a limiting assembly support plate, and a support bar, wherein the limiting assembly support plate is mounted on the slide rail plane support plate; the third driving limiting assembly includes at least one third driving limiting assembly cylinder and at least one third driving limiting assembly pressure block, wherein the third driving limiting assembly cylinder is arranged on one side of the limiting assembly support plate and passes through the limiting assembly support plate, wherein the output end of the third driving limiting assembly cylinder is connected to the third driving limiting assembly pressure block, wherein the support bar is transversely mounted on the inner side of the limiting assembly support plate, wherein the welding part is placed on the support bar, and the corresponding third driving limiting assembly pressure block is driven to clamp the second welding part or the third welding part through the extension and contraction of the third driving limiting assembly cylinder. The third driving limiting assembly cylinder realizes the rapid clamping and releasing of the second welding part or the third welding part, thereby improving the efficiency and flexibility of the welding operation. At the same time, the design of the support bar and the limiting assembly support plate ensures the stability and accuracy of the second welding part or the third welding part during the welding process.

[0014] It can be seen from the above technical solution that the utility model has the following beneficial effects: the pre-assembled welding platform described in the utility model has the functions of rapid construction, flexible adjustment, and pre-assembly in advance to stably fix the welded parts from four directions, front, back, left, and right, through modular design, which greatly improves the welding efficiency and accuracy. The adjustable limit structure adapts to workpieces of different sizes and shapes, so that the platform can cope with a variety of welding tasks. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a pre-assembled welding platform of the utility model;

[0016] Figure 2 This is a schematic diagram of the rear side fixed limiting structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the front side fixed limiting structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the left movable limit structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the integral pre-welded component of the utility model;

[0020] Figure 6 The utility model is a structural schematic diagram of a pre-assembled welding platform loaded with integral pre-welded parts.

[0021] Description of the accompanying drawings in the specification: 1-underframe, 2-workbench, 3-fixed limiting structure, 4-movable limiting structure, 5-integral pre-welded part, 21-top plate, 22-bottom plate, 23-support component, 31-front fixed limiting structure, 32-rear fixed limiting structure, 41-left movable limiting structure, 42-right movable limiting structure, 51-first welding part, 52-second welding part, 53-third welding part, 54-fourth welding part, 55-fifth welding part, 56-sixth welding part, 57-seventh welding part, 3 11-first limiting component, 312-second limiting component, 313-first limiting support plate, 314-second limiting support plate, 321-first support platform, 322-first drive limiting component, 411-driving component, 412-moving component, 413-limiting component, 3111-first limiting component support plate platform, 3112-second drive limiting component, 3113-first gasket, 3121-second limiting component upper support plate platform, 3122-second limiting component lower support plate platform, 3123-second gasket, 3124-second limiting component cylinder, 3125-second limiting component pressure block, 3221-first drive limiting component cylinder, 3222-first drive limiting component pressure block, 3211-rear support plate, 3212-first vertical pressure plate, 4111-drive component support platform, 4112-telescopic drive mechanism, 4121-slide rail, 4122-limiting connecting slider, 4123-slide rail plane support plate, 4131-third drive limiting component 4131, 4132-limiting component support plate, 4133-support bar, 31111-first limiting component support plate, 31112-first limiting component pressure plate, 31121-second drive limiting component cylinder, 31122-second drive limiting component pressure block, 41311-third drive limiting component cylinder, 41312-third drive limiting component pressure block. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Example 1

[0024] like Figure 1A pre-assembled welding platform shown includes: a chassis 1, a workbench 2, a fixed limiting structure 3, and a movable limiting structure 4; the fixed limiting structure 3 includes: a front fixed limiting structure 31 and a rear fixed limiting structure 32; the front fixed limiting structure 31 is installed on the front side of the workbench 2, and the rear fixed limiting structure 32 is installed on the rear side of the workbench 2; the movable limiting structure 4 includes: a left movable limiting structure 41 and a right movable limiting structure 42, the left movable limiting structure 41 is installed on the left side of the workbench 2, and the right movable limiting structure 42 is installed on the right side of the workbench 2. The fixed limiting structure 3 is used to limit the movement of the welded parts in the front and rear directions to ensure the accurate position of the welded parts during the welding process. The movable limiting structure 4 is different from the fixed limiting structure 3. The movable limiting structure 4 can adjust its position as needed to limit the left and right positions of the welded parts. The front and rear welded parts are fixed, and the left and right welded parts are moved to the specified position and fixed to form a whole structure, and then the welding operation is performed.

[0025] In this embodiment, the workbench 2 includes: a top plate 21, a bottom plate 22, and a supporting component 23. The top plate 21 and the bottom plate 22 are connected by the supporting component 23, and the workbench 2 is assembled from the three.

[0026] Example 2

[0027] On the basis of Example 1, in this example, Figure 2 A pre-assembled welding platform is shown, wherein the rear fixed limiting structure comprises a first support platform and a first drive limiting assembly, and the first support platform is mounted on a top plate; the first drive limiting assembly comprises at least one first drive limiting assembly cylinder and at least one first drive limiting assembly pressure block; the first drive limiting assembly cylinder is fixed on the first support platform, and the first drive limiting assembly pressure block is connected to the output end of the first drive limiting assembly cylinder. The first support platform comprises at least one rear support plate and a first vertical pressure plate, and a positioning hole is provided on the first vertical pressure plate, and the welding piece is pre-fixed on the first vertical pressure plate by inserting a positioning pin into the positioning hole, and the welding piece is clamped by the first drive limiting assembly pressure block. The positioning pin is inserted into the positioning hole to pre-position the welding piece, and then the first drive limiting assembly cylinder is extended and retracted to clamp the welding piece to adjust the welding piece, so that the limiting of the welding piece is more accurate. Preferably, three first drive limiting assembly cylinders and three corresponding first drive limiting assembly pressure blocks are provided, and the first support platform is provided with two rear support plates.

[0028] Furthermore, in this embodiment, if Figure 3A pre-assembled welding platform is shown, the front fixed limiting structure includes: a first limiting component 311, a second limiting component 312, a first limiting support plate 313, and a second limiting support plate 314; the first limiting component 311 is installed on the top plate 21, the second limiting component 312 is installed on the workbench 2, the first limiting support plate 313 and the second limiting support plate 314 are installed on the top plate 21, and are relatively arranged on both sides of the second limiting component 312, and the first limiting support plate 313 and the second limiting support plate 314 are both provided with positioning holes, and the welding parts are respectively fixed on the first limiting support plate 313 and the second limiting support plate 314 by inserting the positioning pins into the positioning holes. Preferably, two positioning holes are provided on the first limiting support plate and the second limiting support plate.

[0029] Further, in the present embodiment, the first limiting component 311 comprises a first limiting component support plate platform 3111, a group of second drive limiting components 3112, and at least one first gasket 3113; the first limiting component support plate platform 3111 is installed on the top plate 21, the first limiting component support plate platform 3111 comprises at least one first limiting component support plate 31111, a first limiting component pressure plate 31112, the first limiting component pressure plate 31112 is provided with a positioning hole and a first gasket 3113, the first limiting component support plate 31111 is installed on the top plate 21, and the first limiting component pressure plate 31112 is arranged on the top of the first limiting component support plate 31111; the second drive limiting component 3112 comprises at least one second drive limiting component cylinder 31121, at least one second drive limiting component pressing block 31122, the second drive limiting component cylinder 31121 is arranged below the first limiting component pressure plate 31112, The output end of the second drive limit assembly cylinder 31121 is connected to the second drive limit assembly pressure block 31122, and the welded part is pre-fixed on the first limit assembly support plate platform 3111 by a positioning pin, and the second drive limit assembly cylinder 31121 drives the corresponding second drive limit assembly pressure block 31122 to clamp the welded part. The first limit assembly support plate platform can support the welded part and keep the welded part at the same horizontal height, and then cooperate with the second drive limit assembly cylinder to drive the second drive limit assembly pressure block to clamp the welded part for fixing, thereby improving the welding effect. The first gasket can be used as a supporting structure to help maintain the stability and shape of the welded part. Preferably, two positioning holes and two first gaskets 3113 are provided on the first limit assembly pressure plate 31112, the second drive limit assembly 3112 includes two second drive limit assembly cylinders 31121 and two one-to-one corresponding second drive limit assembly pressure blocks 31122, and the first limit assembly support plate platform 3111 includes two first limit assembly support plates 31111.

[0030] Furthermore, in the present embodiment, the second limiting component 312 comprises a second limiting component upper support plate platform 3121, a second limiting component lower support plate platform 3122, at least one second gasket 3123, a second limiting component cylinder 3124, and a second limiting component pressing block 3125. The second limiting component upper support plate platform 3121 is installed above the top plate 21, the second limiting component lower support plate platform 3122 is installed on the bottom plate 22, the second limiting component upper support plate platform 3121 is provided with a positioning hole, and the second limiting component cylinder 3124 is provided with a positioning hole. 3124 is installed on the lower support plate platform 3122 of the second limiting component, the second limiting component pressing block 3125 is connected to the output end of the second limiting component cylinder 3124, and is located above the upper support plate platform 3121 of the second limiting component. A positioning hole and a second gasket 3123 are arranged above the upper support plate platform 3121 of the second limiting component. The weldment is placed on the upper support plate platform 3121 of the second limiting component, and the positioning pin is inserted into the positioning hole to pre-position the weldment, and then the second limiting component cylinder 3124 drives the second limiting component pressing block 3125 to clamp the weldment. The upper support plate platform of the second limiting component can support the weldment and keep the weldment at the same horizontal height, and then cooperate with the second limiting component cylinder to retract the second limiting component pressing block to clamp the weldment and fix it, thereby improving the welding effect. The second gasket can serve as a supporting structure to help maintain the stability and shape of the weldment. Preferably, four positioning and three second gaskets 3123 are arranged above the upper support plate platform 3121 of the second limiting component.

[0031] Furthermore, in this embodiment, if Figure 1 , Figure 4 As shown, the left movable limiting structure 41 and the right movable limiting structure 42 are identical and symmetrical to each other. The left movable limiting structure 41 and the right movable limiting structure 42 both include a driving assembly 411, a moving assembly 412, and a limiting assembly 413. The driving assembly 411 is mounted on the top plate 21, and the moving assembly 412 is mounted on the bottom plate 22. The limiting assembly 413 passes through the top plate 21 and is movably connected to the moving assembly 412. The output end of the driving assembly 411 is connected to the limiting assembly 413 to drive the limiting assembly 413 to limit the weldment. The moving assembly 412 is mounted on the bottom plate 22, and its main function is to provide a moving function. The driving assembly 411 drives the limiting assembly 413 to achieve accurate limiting of the weldment. This drive can be manual or automatic. The driving assembly 411 and the limiting assembly 413 on the left and right sides are designed the same, which means that they can be used interchangeably, increasing the flexibility of the platform. When workpieces of different widths or shapes need to be welded, this design can be quickly adjusted to suit different welding tasks.

[0032] Further, in this embodiment, the driving assembly 411 includes a driving assembly support platform 4111 and a telescopic driving mechanism 4112, wherein the driving assembly support platform 4111 is mounted on the top plate 21, and the telescopic driving mechanism 4112 is mounted on the driving assembly support platform 4111; the moving assembly 412 includes at least one slide rail 4121, at least one limit connection slider 4122, and a slide rail plane support plate 4123, wherein the slide rail 4122 is mounted on the bottom plate 22, the limit connection slider 4122 is slidably connected to the slide rail 4121, the slide rail plane support plate 4123 is mounted on the limit connection slider 4122, and the lower end of the limit assembly 413 is connected to the slide rail plane support plate 4123. The slide rail plane support plate 4123 provides a stable platform for installing and adjusting the limit assembly 413 to achieve precise positioning of the weldment. Preferably, two slide rails 4121 and two corresponding limit connection sliders 4122 are provided on each of the left and right sides.

[0033] Furthermore, in the above-mentioned pre-assembled welding platform, the limit assembly 413 includes a third drive limit assembly 4131, a limit assembly support plate 4132, and a support bar 4133, and the limit assembly support plate 4132 is installed on the slide rail plane support plate 4123; the third drive limit assembly 4131 includes at least one third drive limit assembly cylinder 41311 and at least one third drive limit assembly pressure block 41312, the third drive limit assembly cylinder 41311 is arranged on one side of the limit assembly support plate 4132 and passes through the limit assembly support plate 4132, the output end of the third drive limit assembly cylinder 41311 is connected to the third drive limit assembly pressure block 41312, the support bar 4133 is transversely installed on the inner side of the limit assembly support plate 4132, the weldment is placed on the support bar 4133, and the corresponding third drive limit assembly pressure block 41312 is driven to clamp the weldment by the extension and contraction of the third drive limit assembly cylinder 41311. The third drive limit assembly cylinder 41311 realizes the rapid clamping and release of the welded parts, improving the efficiency and flexibility of the welding operation. At the same time, the design of the support bar 4133 and the limit assembly support plate 4132 ensures the stability and accuracy of the welded parts during the welding process. Preferably, two third drive limit assembly cylinders and two corresponding third drive limit assembly pressure blocks are provided on the left and right limit assembly support plates 4132.

[0034] The overall pre-welded part 5 is as follows Figure 5 As shown, the structural diagram of the pre-assembled welding platform after loading various welding parts is as follows Figure 6 As shown. Combined Figure 1 , Figure 2 , Figure 3 , Figure 4, the pre-assembled welding platform has the following method of use: insert the first welding part 51 into the positioning hole by inserting the positioning pin into the positioning hole to pre-estimation fix it on the first vertical pressure plate 3212, the first drive limiting component cylinder 3221 drives the first drive limiting component pressing block 3222 to clamp the first welding part 51 for secondary precise limiting; the fourth welding part 54 and the fifth welding part 55 are respectively limited on the second limiting support plate 314 and the first limiting support plate 313 by inserting the positioning pin into the positioning hole; the sixth welding part 56 is placed on the first gasket 3113 and pre-fixed by the positioning pin and the positioning hole, the second drive limiting component cylinder 31121 drives the second drive limiting component pressing block 31122 to clamp the sixth welding part 56 for secondary precise limiting; the seventh welding part 57 is placed on the second gasket 3123 and pre-estimation is made by the positioning pin and the positioning hole, the second limiting component cylinder 3124 drives the second limiting component pressing block 3125 to clamp the seventh welding part 57 for secondary precise limiting;

[0035] The second welding part 52 and the third welding part 53 are the same. The second welding part 52 is placed on the support bar 4133. The third driving limit assembly cylinder 41311 drives the third driving limit assembly pressure block 41312 to clamp the second welding part 52 on the limit assembly support plate 4132. The telescopic driving mechanism 4112 pushes the limit assembly support plate 4132 to fit with the aforementioned first welding part 51, fifth welding part 55, sixth welding part 56, and seventh welding part 57. Similarly, the third welding part 53 is fit with the first welding part 51, fourth welding part 54, sixth welding part 56, and seventh welding part 57 to form an integral pre-welded part 5. Finally, the welding equipment welds the welding parts of the integral pre-welded part 5.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A pre-assembled welding platform, characterized in that: include: A base frame (1) and a workbench (2), wherein the workbench (2) is mounted on the base frame (1); A fixed limiting structure (3), the fixed limiting structure (3) comprising a front fixed limiting structure (31) and a rear fixed limiting structure (32), the front fixed limiting structure (31) being installed on the front side of the workbench (2), and the rear fixed limiting structure (32) being installed on the rear side of the workbench (2); A movable limiting structure (4), the movable limiting structure (4) comprising a left movable limiting structure (41) and a right movable limiting structure (42), the left movable limiting structure (41) being installed on the left side of the workbench (2), and the right movable limiting structure (42) being installed on the right side of the workbench (2).

2. A pre-assembled welding platform according to claim 1, characterized in that: The workbench (2) comprises a top plate (21), a bottom plate (22), and a supporting component (23); the top plate (21) and the bottom plate (22) are connected via the supporting component (23).

3. A pre-assembled welding platform according to claim 2, characterized in that: The rear fixed limiting structure (32) comprises a first supporting platform (321) and a first driving limiting assembly (322); the first supporting platform (321) is mounted on the top plate (21); the first driving limiting assembly (322) comprises at least one first driving limiting assembly cylinder (3221) and at least one first driving limiting assembly pressing block (3222); the first driving limiting assembly cylinder (3221) is fixed on the first supporting platform (321); the first driving limiting assembly pressing block (3222) is connected to an output end of the first driving limiting assembly cylinder (3221).

4. A pre-assembled welding platform according to claim 3, characterized in that: The first supporting platform (321) comprises at least one rear supporting plate (3211) and a first vertical pressing plate (3212); a positioning hole is provided on the first vertical pressing plate (3212); a positioning pin is inserted into the positioning hole to pre-fix the first welding component (51) on the first vertical pressing plate (3212); and the first driving limit assembly pressing block (3222) clamps the first welding component (51).

5. The pre-assembled welding platform according to claim 2, characterized in that: The front fixed limiting structure (31) comprises: a first limiting component (311), a second limiting component (312), a first limiting support plate (313), and a second limiting support plate (314); the first limiting component (311) is mounted on the top plate (21), the second limiting component (312) is mounted on the workbench (2), the first limiting support plate (313) and the second limiting support plate (314) are mounted on the top plate (21) and are arranged on two sides of the second limiting component (312) opposite to each other, and positioning holes are provided on the first limiting support plate (313) and the second limiting support plate (314), and the fifth welding component (55) and the fourth welding component (54) are respectively fixed on the first limiting support plate (313) and the second limiting support plate (314) by inserting positioning pins into the positioning holes.

6. A pre-assembled welding platform according to claim 5, characterized in that: The first limiting component (311) comprises a first limiting component support plate platform (3111), a group of second drive limiting components (3112), and at least one first gasket (3113); the first limiting component support plate platform (3111) is mounted on the top plate (21); The first limiting component support plate platform (3111) comprises at least one first limiting component support plate (31111) and a first limiting component pressure plate (31112); the first limiting component pressure plate (31112) is provided with a positioning hole and a first gasket (3113); the first limiting component support plate (31111) is mounted on the top plate (21); the first limiting component pressure plate (31112) is arranged on the top of the first limiting component support plate (31111); the second driving limiting component (3112) comprises at least one second driving limiting component cylinder (3112); 1) at least one second drive limit component pressing block (31122), the second drive limit component cylinder (31121) is arranged below the first limit component pressing plate (31112), the output end of the second drive limit component cylinder (31121) is connected to the second drive limit component pressing block (31122), the sixth welding part (56) is pre-fixed on the first limit component support plate platform (3111) by a positioning pin, and the second drive limit component cylinder (31121) drives the corresponding second drive limit component pressing block (31122) to clamp the sixth welding part (56).

7. The pre-assembled welding platform according to claim 5, characterized in that: The second limiting component (312) comprises a second limiting component upper support plate platform (3121), a second limiting component lower support plate platform (3122), at least one second gasket (3123), a second limiting component cylinder (3124), and a second limiting component pressing block (3125); the second limiting component upper support plate platform (3121) is mounted above the top plate (21); the second limiting component lower support plate platform (3122) is mounted on the bottom plate (22); a positioning hole is provided on the second limiting component upper support plate platform (3121); and the second limiting component cylinder (3124) is mounted on the second limiting component. The seventh welding component (57) is placed on the lower support plate platform (3122) of the second limiting component, the second limiting component pressing block (3125) is connected to the output end of the second limiting component cylinder (3124) and is located above the upper support plate platform (3121) of the second limiting component, a positioning hole and a second gasket (3123) are provided above the upper support plate platform (3121) of the second limiting component, the seventh welding component (57) is placed on the upper support plate platform (3121) of the second limiting component, the positioning pin is inserted into the positioning hole to pre-position the seventh welding component (57), and then the second limiting component cylinder (3124) drives the second limiting component pressing block (3125) to clamp the seventh welding component (57).

8. The pre-assembled welding platform according to claim 2, characterized in that: The left movable limiting structure (41) and the right movable limiting structure (42) are identical and symmetrical to each other. Both the left movable limiting structure (41) and the right movable limiting structure (42) comprise a driving component (411), a moving component (412) and a limiting component (413); the driving component (411) is mounted on the top plate (21), the moving component (412) is mounted on the bottom plate (22), the limiting component (413) passes through the top plate (21) and is movably connected to the moving component (412), the output end of the driving component (411) is connected to the limiting component (413), and the limiting component (413) is driven to limit the second welding component (52).

9. The pre-assembled welding platform according to claim 8, characterized in that: The driving component (411) comprises a driving component support platform (4111) and a telescopic driving mechanism (4112); the driving component support platform (4111) is mounted on the top plate (21); and the telescopic driving mechanism (4112) is mounted on the driving component support platform (4111); the moving component (412) comprises at least one slide rail (4121), at least one position-limiting connecting slider (4122), and a slide rail plane support plate (4123); the slide rail (4121) is mounted on the bottom plate (22); the position-limiting connecting slider (4122) is slidably connected to the slide rail (4121); the slide rail plane support plate (4123) is mounted on the position-limiting connecting slider (4122); and the lower end of the position-limiting component (413) is connected to the slide rail plane support plate (4123).

10. The pre-assembled welding platform according to claim 9, characterized in that: The limiting assembly (413) comprises a third driving limiting assembly (4131), a limiting assembly support plate (4132), and a support bar (4133); the limiting assembly support plate (4132) is mounted on the slide rail plane support plate (4123); the third driving limiting assembly (4131) comprises at least one third driving limiting assembly cylinder (41311) and at least one third driving limiting assembly pressure block (41312); the third driving limiting assembly cylinder (41311) is arranged on one side of the limiting assembly support plate (4132) and passes through the limiting assembly support plate (4132); The output end of the third drive limit assembly cylinder (41311) is connected to the third drive limit assembly pressure block (41312), the support bar (4133) is transversely mounted on the inner side of the limit assembly support plate (4132), the second welding part (52) is placed on the support bar (4133), and the third drive limit assembly cylinder (41311) is extended and retracted to drive the corresponding third drive limit assembly pressure block (41312) to clamp the second welding part (52).

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