CN217452772U

CN217452772U - Welding jig of wind regime system frame

Info

Publication number: CN217452772U
Application number: CN202221427337.7U
Authority: CN
Inventors: 陈培
Original assignee: Changzhou Association Issued Machinery Manufacturing Co ltd
Current assignee: Changzhou Association Issued Machinery Manufacturing Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-09-20
Anticipated expiration: 2032-06-09

Abstract

The utility model discloses a welding jig of wind regime system frame, comprising a base plate, bottom plate up end left end correspond and to have set firmly two first location posts that are used for the first otic placode on the location support wind regime system frame, two first location post up end be provided with first clamp plate, correspond on the up end of first location post and the first clamp plate and seted up waist shape hole, still including the second clamp plate that is used for distance between two C type reinforcing plate upper arms on the spacing wind regime system frame, the waist shape downthehole interpolation of second clamp plate have second waist shape stopper post. The parts can be quickly and accurately positioned, spliced and reliably clamped, so that the parts can be quickly and accurately spliced and then fixed by spot welding, the splicing and spot welding difficulty of the parts is obviously reduced, the splicing and spot welding workload is reduced, the welding reliability and the welding efficiency are improved, the welding deformation can be reduced, and the product percent of pass is improved; the structure design is ingenious and reasonable, the use and the operation are simple, and the practicability is strong.

Description

Welding jig of wind regime system frame

Technical Field

The utility model relates to a welding frock technical field, concretely relates to welding jig of wind regime system frame.

Background

The wind source system is used as a key part of the railway vehicle, and the main function of the wind source system is to generate compressed air and purify the compressed air to obtain clean and dry compressed air to supply to a vehicle braking system and other wind utilization equipment. The performance of the wind source system directly concerns the running safety and riding comfort of the train.

As shown in figures 1-2, a bullet train wind source system frame comprises a first cross beam 1 and a second cross beam 2 which are arranged in parallel and correspondingly, a first longitudinal beam 3, a second longitudinal beam 4, a third longitudinal beam 5 and a fourth longitudinal beam 6 are welded between the first cross beam 1 and the second cross beam 2 in sequence from the left end to the right end in parallel and at intervals, the cross section of the second longitudinal beam 4 is of a U-shaped structure, the cross sections of the first longitudinal beam 3, the third longitudinal beam 5 and the fourth longitudinal beam 6 are all of an L-shaped structure, two ends of a vertical plate of the first longitudinal beam 3 are correspondingly provided with a first lug plate which is horizontally turned towards the left side, two ends of a vertical plate of the fourth longitudinal beam 6 are correspondingly provided with a second lug plate which is horizontally turned towards the left side, two vertical plates 1-1 which are overlapped and fixedly welded on the upper end surface of the first lug plate are correspondingly arranged at the left end of the first cross beam 1 and the left end of the second cross beam 2, two C-shaped vertical plates 7 which are fixedly welded on the upper end surface of the fourth longitudinal beam 6 correspondingly and at intervals, the upper arms of two C-shaped reinforcing plates 7 are lapped and welded and fixedly arranged on the upper end surface of a second ear plate, a first waist-shaped hole 9 positioned between two 7-shaped vertical plates 1-1 is arranged on the first ear plate, a second waist-shaped hole 10 positioned between the two C-shaped reinforcing plates 7 is arranged on the second ear plate, a pair of third waist-shaped holes 11 are respectively arranged at the left end and the middle part of a first cross beam 1 at intervals along the length direction, supporting legs 8 are respectively and vertically welded and fixedly arranged at the two ends of the lower end surface of the first cross beam 1 and the right end of the lower end surface of a second cross beam 2, a round-head rectangular hole 4-1 is arranged at the center of the second longitudinal beam 4, a plurality of mounting holes 12 are respectively arranged on the horizontal plate of the first longitudinal beam 3, the horizontal plate of the second longitudinal beam 4, the vertical plate of the fourth longitudinal beam 6 and the vertical plate of the third longitudinal beam 5, wherein the mounting holes 12 on the second longitudinal beam 4 are respectively positioned at the corners of the outer peripheral side of the round-head rectangular hole 4-1. The frame welding structural part of the bullet train wind source system is characterized by thin material thickness, large product volume and mass, complex welding structure, large welding deformation and large welding workload, so that a welding clamp for the frame of the bullet train wind source system is required to be specially designed in order to reduce splicing point workload and welding deformation and prevent wrong welding and missing welding so as to meet the requirements of drawing size and form and position tolerance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provide a welding fixture for a wind source system frame, which can quickly and accurately position, splice and reliably clamp each part, so that each part can be quickly and accurately spliced and then fixed by spot welding, the splicing and spot welding difficulty of each part is obviously reduced, the splicing welding workload is reduced, the welding reliability and the welding efficiency are improved, the welding deformation can be reduced, and the product percent of pass is improved; the structure design is ingenious and reasonable, the use and the operation are simple, and the practicability is strong.

In order to achieve the purpose, the technical scheme of the utility model is to design a welding fixture of a wind source system frame, which comprises a bottom plate, wherein two first positioning posts for positioning and supporting a first lug plate on the wind source system frame are correspondingly and fixedly arranged at the left end of the upper end surface of the bottom plate, a first pressing plate is arranged on the upper end surfaces of the two first positioning posts, waist-shaped holes are correspondingly formed on the upper end surface of the first positioning post and the first pressing plate, and the first positioning post and the first pressing plate are connected in an inserting manner through a first waist-shaped plug column inserted in the waist-shaped hole;

the right end edge of the bottom plate is correspondingly provided with two concave grooves for accommodating the lower arms of the C-shaped reinforcing plates on the wind source system framework, the right end edge of the upper end surface of the bottom plate is also correspondingly and fixedly provided with positioning blocks positioned in the middle of the concave grooves, and the positioning blocks are used for limiting vertical plates of a fourth longitudinal beam;

the middle part of the upper end surface of the bottom plate is provided with a pressing assembly for limiting and fixing the second longitudinal beam, and the right end of the upper end surface of the bottom plate is provided with a clamping assembly for limiting and fixing the third longitudinal beam;

the left end and the right end of the rear side of the upper end surface of the bottom plate are provided with a first waist-shaped positioning plug column for positioning a first cross beam, the right end of the front side of the upper end surface of the bottom plate is provided with a second waist-shaped positioning plug column for positioning a second cross beam, the left end of the upper end surface of the bottom plate is provided with a first positioning pin for positioning a first longitudinal beam, the middle part of the upper end surface of the bottom plate is provided with a second positioning pin for positioning a second longitudinal beam, and the right end of the upper end surface of the bottom plate is provided with a third positioning pin for positioning a fourth longitudinal beam;

the bottom plate is provided with a plurality of pore channels for accommodating the supporting legs on the wind source system framework;

the wind source system frame further comprises a second pressure plate used for limiting the distance between the upper arms of the two C-shaped reinforcing plates on the wind source system frame, and a second waist-shaped plug column is inserted in a waist-shaped hole of the second pressure plate.

The utility model discloses a welding jig of wind regime system frame can be with each spare part quick accurate positioning concatenation and reliable clamp tightly, makes each spare part can quick accurate concatenation, then spot welding fix, is showing the concatenation and the spot welding degree of difficulty that reduces each spare part, reduces the tailor-welding work load, improves welding reliability and welding efficiency to can reduce welding deformation, improve the product percent of pass; the structure design is ingenious and reasonable, the use and the operation are simple, and the practicability is strong.

The pressing assembly comprises an inverted U-shaped pressing plate, a cushion block and a screw rod, wherein the cushion block is fixedly arranged on the upper end face of the bottom plate, the inverted U-shaped pressing plate is in lap joint with the upper end face of the cushion block and is fixedly connected with a threaded hole in the cushion block through the screw rod penetrating through the central hole, and the length of the inverted U-shaped pressing plate is smaller than the distance between the first cross beam and the second cross beam. The pressing assembly is simple and reasonable in structural design, the well-positioned second longitudinal beam can be quickly pressed, the second longitudinal beam is effectively prevented from displacing due to external force in the splicing welding process, and the splicing welding accuracy between the second longitudinal beam and the first cross beam and between the second longitudinal beam and the second cross beam is ensured.

Further preferred technical scheme still, clamping component include fifth backing plate, L template body, fourth locating pin, second reference column, quick anchor clamps, fifth backing plate, second reference column and quick anchor clamps all set firmly in the up end of bottom plate, L template body set firmly in the up end of fifth backing plate, the fourth locating pin peg graft and install in the pinhole of L template body riser, the second reference column correspond and be located the front and back both ends of L template body, the leading flank of second reference column and the leading flank of L template body riser flush, and quick anchor clamps correspond the left side that the interval is located the second reference column. The compressing assembly is simple and reasonable in structural design, can be used for quickly positioning and clamping the fourth longitudinal beam, effectively avoids displacement of the third longitudinal beam due to external force in the splicing welding process, and ensures the splicing welding accuracy between the third longitudinal beam and the first cross beam as well as the second cross beam.

Further preferred technical scheme still, the bottom plate up end from left to right set firmly in proper order be used for laying the first backing plate of first longeron, be used for laying the second backing plate of second longeron, be used for laying the third backing plate of third longeron, be used for laying the fourth backing plate of fourth longeron to the up end of first backing plate, second backing plate, third backing plate, fourth backing plate and fifth backing plate all is located same horizontal plane, the cushion correspond the rectangle centre bore that is located the second backing plate. In the process of assembling the splicing points of all the parts, the splicing operation convenience of the first longitudinal beam, the second longitudinal beam, the third longitudinal beam and the fourth longitudinal beam is improved by the base plates; the upper end surfaces of the first base plate, the second base plate, the third base plate, the fourth base plate and the fifth base plate are all located on the same horizontal plane, so that the first longitudinal beam, the second longitudinal beam, the third longitudinal beam and the fourth longitudinal beam are still located on the same horizontal reference surface after being spliced, and the quality precision of a wind source system frame finished product is guaranteed.

In addition, the first base plate, the third base plate and the fourth base plate respectively comprise two base plates, and the first base plate, the third base plate and the fourth base plate are respectively and fixedly arranged on the front side and the rear side of the upper end face of the bottom plate correspondingly. On the basis of ensuring that the first longitudinal beam, the second longitudinal beam, the third longitudinal beam and the fourth longitudinal beam are still positioned on the same horizontal reference surface after splicing and welding, the overall weight of the welding fixture is effectively reduced, and the use portability is improved.

The utility model has the advantages and beneficial effects that:

1. the utility model discloses a welding jig of wind regime system frame can be with each spare part quick accurate positioning concatenation and reliable clamp tightly, makes each spare part can quick accurate concatenation, then spot welding fix, is showing the concatenation and the spot welding degree of difficulty that reduces each spare part, reduces the tailor-welding work load, improves welding reliability and welding efficiency to can reduce welding deformation, improve the product percent of pass; the structure design is ingenious and reasonable, the use and the operation are simple, and the practicability is strong.

2. The pressing assembly is simple and reasonable in structural design, the well-positioned second longitudinal beam can be quickly pressed, the second longitudinal beam is effectively prevented from displacing due to external force in the splicing welding process, and the splicing welding accuracy between the second longitudinal beam and the first cross beam and between the second longitudinal beam and the second cross beam is ensured.

3. The compressing assembly is simple and reasonable in structural design, can be used for quickly positioning and clamping the fourth longitudinal beam, effectively avoids displacement of the third longitudinal beam due to external force in the splicing welding process, and ensures the splicing welding accuracy between the third longitudinal beam and the first cross beam as well as the second cross beam.

4. In the process of assembling the parts at the splicing points, the splicing operation convenience of the first longitudinal beam, the second longitudinal beam, the third longitudinal beam and the fourth longitudinal beam is improved by the aid of the base plates; the upper end surfaces of the first base plate, the second base plate, the third base plate, the fourth base plate and the fifth base plate are all located on the same horizontal plane, so that the first longitudinal beam, the second longitudinal beam, the third longitudinal beam and the fourth longitudinal beam are still located on the same horizontal reference surface after being spliced, and the quality precision of a wind source system frame finished product is guaranteed.

5. The first backing plate, the third backing plate and the fourth backing plate respectively comprise two backing plates, and the first backing plate, the third backing plate and the fourth backing plate are respectively and fixedly arranged on the front side and the rear side of the upper end face of the bottom plate. On the basis of ensuring that the first longitudinal beam, the second longitudinal beam, the third longitudinal beam and the fourth longitudinal beam are still positioned on the same horizontal reference surface after splicing and welding, the overall weight of the welding fixture is effectively reduced, and the use portability is improved.

Drawings

FIG. 1 is a schematic top perspective view of a wind source system frame;

FIG. 2 is a schematic bottom perspective view of a wind source system frame;

fig. 3 is a schematic top perspective view of the welding jig of the wind source system frame of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at H;

fig. 5 is a schematic view of a top-down perspective structure of a welding jig in a use state of the wind source system frame of the present invention;

fig. 6 is a schematic view of a front right side view overlooking three-dimensional structure of a welding jig in a use state of the wind source system frame of the present invention.

In the figure: 1. a first cross member; 2. a second cross member; 3. a first stringer; 4. a second stringer; 5. a third stringer; 6. a fourth stringer; 7. a C-shaped reinforcing plate; 8. supporting legs; 9. a first waist-shaped hole; 10. a second waist-shaped hole; 11. a third waist-shaped hole; 12. mounting holes; 13. a base plate; 14. a first positioning post; 15. a first platen; 16. a first kidney plug; 17. a concave groove; 18. positioning a block; 19. a clamping assembly; 19-1, a fifth backing plate; 19-2, L-shaped plate bodies; 19-3, a fourth positioning pin; 19-4, a second positioning column; 19-5, quick clamping; 20. a first kidney-shaped positioning plug; 20-1, a second kidney-shaped positioning plug; 21. a first positioning pin; 21-1, a second positioning pin; 21-2, a third positioning pin; 22. a duct; 23. a second platen; 24. a second kidney plug; 25. a compression assembly; 25-1, an inverted U-shaped pressing plate; 25-2, cushion blocks; 25-3, a screw; 26. a first backing plate; 27. a second backing plate; 28. a third base plate; 29. a fourth base plate; 1-1 and 7-shaped vertical plates; 4-1, round-head rectangular holes.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Examples

As shown in fig. 3-6, the utility model relates to a welding jig for wind source system frame, which comprises a bottom plate 13, the left end of the upper end face of the bottom plate 13 is fixedly provided with two first positioning posts 14 for positioning and supporting a first ear plate on the wind source system frame, the upper end faces of the two first positioning posts 14 are provided with first pressing plates 15, the upper end faces of the first positioning posts 14 and the first pressing plates 15 are correspondingly provided with waist-shaped holes, and the two are connected by inserting first waist-shaped plugs 16 inserted in the waist-shaped holes;

the right end edge of the bottom plate 13 is correspondingly provided with two concave grooves 17 for accommodating the lower arms of the C-shaped reinforcing plates 7 on the wind source system framework, the right end edge of the upper end surface of the bottom plate 13 is also respectively and fixedly provided with a positioning block 18 positioned in the middle of the concave grooves 17, and the positioning block 18 is used for limiting the vertical plate of the fourth longitudinal beam 6;

the middle part of the upper end surface of the bottom plate 13 is provided with a pressing component 25 for limiting and fixing the second longitudinal beam 4, and the right end of the upper end surface of the bottom plate 13 is provided with a clamping component 19 for limiting and fixing the third longitudinal beam 5;

the left end and the right end of the rear side of the upper end surface of the bottom plate 13 are provided with a first kidney-shaped positioning plug 20 for positioning the first cross beam 1, the right end of the front side of the upper end surface of the bottom plate 13 is provided with a second kidney-shaped positioning plug 20-1 for positioning the second cross beam 2, the left end of the upper end surface of the bottom plate 13 is provided with a first positioning pin 21 for positioning the first longitudinal beam 3, the middle part of the upper end surface of the bottom plate 13 is provided with a second positioning pin 21-1 for positioning the second longitudinal beam 4, and the right end of the upper end surface of the bottom plate 13 is provided with a third positioning pin 21-2 for positioning the fourth longitudinal beam 6;

a plurality of pore channels 22 for accommodating the supporting legs 8 on the wind source system framework are formed on the bottom plate 13;

the wind source system frame further comprises a second pressing plate 23 used for limiting the distance between the upper arms of the two C-shaped reinforcing plates 7 on the wind source system frame, and a second waist-shaped plug column 24 is inserted into a waist-shaped hole of the second pressing plate 23.

Preferably, the pressing assembly 25 comprises an inverted U-shaped pressing plate 25-1, a backing plate 25-2 and a screw rod 25-3, wherein the backing plate 25-2 is fixedly arranged on the upper end surface of the bottom plate 13, the inverted U-shaped pressing plate 25-1 is lapped on the upper end surface of the backing plate 25-2, the inverted U-shaped pressing plate 25-1 is fixedly connected with a threaded hole in the backing plate 25-2 through the screw rod 25-3 penetrating through a central hole, and the length of the inverted U-shaped pressing plate 25-1 is less than the distance between the first beam 1 and the second beam 2.

Further preferably, the clamping assembly 19 comprises a fifth backing plate 19-1, an L-shaped plate 19-2, a fourth positioning pin 19-3, a second positioning column 19-4 and a quick clamp 19-5, the fifth backing plate 19-1, the second positioning column 19-4 and the rapid clamp 19-5 are fixedly arranged on the upper end face of the bottom plate 13, the L-shaped plate body 19-2 is fixedly arranged on the upper end surface of the fifth backing plate 19-1, the fourth positioning pin 19-3 is inserted and installed in a pin hole of a vertical plate of the L-shaped plate 19-2, the second positioning columns 19-4 are correspondingly positioned at the front and rear ends of the L-shaped plate body 19-2, the front side surfaces of the second positioning columns 19-4 are flush with the front side surface of the vertical plate of the L-shaped plate body 19-2, and the quick clamps 19-5 are correspondingly and alternately positioned at the left side of the second positioning column 19-4.

Further preferably, a first base plate 26 for laying the first longitudinal beam 3, a second base plate 27 for laying the second longitudinal beam 4, a third base plate 28 for laying the third longitudinal beam 5 and a fourth base plate 29 for laying the fourth longitudinal beam 6 are fixedly arranged on the upper end surface of the bottom plate 13 from left to right in sequence, the upper end surfaces of the first base plate 26, the second base plate 27, the third base plate 28, the fourth base plate 29 and the fifth base plate 19-1 are all located on the same horizontal plane, and the base plate 25-2 is correspondingly located in a rectangular central hole of the second base plate 27.

Further preferably, the first pad 26, the third pad 28 and the fourth pad 29 respectively include two, and the first pad 26, the third pad 28 and the fourth pad 29 are respectively and fixedly arranged at the front side and the rear side of the upper end surface of the bottom plate 13.

The utility model relates to a welding jig's of wind regime system frame usage principle:

sequentially laying a first longitudinal beam 3, a second longitudinal beam 4, a third longitudinal beam 5 and a fourth longitudinal beam 6 on the upper end surface of a bottom plate 13 from left to right, and inserting a first positioning pin 21 into a mounting hole 12 of the first longitudinal beam 3 and a corresponding hole on the bottom plate 13; laying the second longitudinal beam 4 on a second base plate 27, enabling a cushion block 25-2 to be located in a round-head rectangular hole 4-1 of the second longitudinal beam 4, inserting a second positioning pin 21-1 into a corresponding hole in a mounting hole 12 and a base plate 13 of the second longitudinal beam 4, placing an inverted U-shaped pressing plate 25-1 on the second longitudinal beam 4, and pressing and fixing the second longitudinal beam 4 on the second base plate 27 through a screw 25-3; laying the third longitudinal beam 5 on a third base plate 28, inserting a fourth positioning pin 19-3 into a pin hole in a vertical plate of the L-shaped plate body 19-2 and a mounting hole 12 of the third longitudinal beam 5, and then fixing and pressing the third longitudinal beam 5 and the L-shaped plate body 19-2 by using a quick clamp 19-5 and a second positioning column 19-4; the right wall surface of the fourth longitudinal beam 6 is abutted against the positioning block 18, and the third positioning pin 21-2 is inserted into the mounting hole 12 of the fourth longitudinal beam 6 and the corresponding hole on the bottom plate 13; laying a first cross beam 1 at the rear end of the upper end face of a bottom plate 13, laying a second cross beam 2 at the front end of the upper end face of the bottom plate 13, respectively placing two first pressing plates 15 between two 7-shaped vertical plates 1-1 at the left end of the first cross beam 1 and between two 7-shaped vertical plates 1-1 at the left end of the second cross beam 2, and connecting the first pressing plates 15 with a first positioning column 14 in an inserting manner by using a first waist-shaped plug column 16; the two pairs of C-shaped reinforcing plates 7 are respectively clamped at the front end and the rear end of the fourth longitudinal beam 6 from the right side, the lower arms of each pair of C-shaped reinforcing plates 7 are positioned in the corresponding concave grooves 17, the upper arms of the C-shaped reinforcing plates 7 are lapped and positioned on the second lug plates of the fourth longitudinal beam 6, the two second pressing plates 23 are respectively placed on the upper end surfaces of the two second lug plates and positioned between the upper arms of each pair of C-shaped reinforcing plates 7, and the second pressing plates 23 are connected with the second kidney-shaped holes 10 on the second lug plates of the fourth longitudinal beam 6 in an inserting mode through second kidney-shaped plugs 24; and splicing and welding the parts together, then dismounting the spliced and welded wind source system frame, and transferring to a dense welding process to perform next dense welding operation.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the technical principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims

1. The welding fixture for the wind source system frame is characterized by comprising a base plate (13), wherein two first positioning columns (14) used for positioning and supporting a first lug plate on the wind source system frame are fixedly arranged at the left end of the upper end face of the base plate (13) correspondingly, a first pressing plate (15) is arranged on the upper end faces of the two first positioning columns (14), kidney-shaped holes are correspondingly formed in the upper end face of the first positioning column (14) and the first pressing plate (15), and the first positioning columns and the first pressing plate are connected in an inserting manner through first kidney-shaped plug columns (16) inserted in the kidney-shaped holes;

the right end edge of the bottom plate (13) is correspondingly provided with two concave grooves (17) for accommodating lower arms of a C-shaped reinforcing plate (7) on a wind source system framework, the right end edge of the upper end face of the bottom plate (13) is also correspondingly and fixedly provided with positioning blocks (18) positioned in the middle of the concave grooves (17), and the positioning blocks (18) are used for limiting vertical plates of the fourth longitudinal beam (6);

a pressing assembly (25) for limiting and fixing the second longitudinal beam (4) is arranged in the middle of the upper end face of the bottom plate (13), and a clamping assembly (19) for limiting and fixing the third longitudinal beam (5) is arranged at the right end of the upper end face of the bottom plate (13);

the left end and the right end of the rear side of the upper end face of the bottom plate (13) are provided with a first kidney-shaped positioning plug (20) for positioning the first cross beam (1), the right end of the front side of the upper end face of the bottom plate (13) is provided with a second kidney-shaped positioning plug (20-1) for positioning the second cross beam (2), the left end of the upper end face of the bottom plate (13) is provided with a first positioning pin (21) for positioning the first longitudinal beam (3), the middle part of the upper end face of the bottom plate (13) is provided with a second positioning pin (21-1) for positioning the second longitudinal beam (4), and the right end of the upper end face of the bottom plate (13) is provided with a third positioning pin (21-2) for positioning the fourth longitudinal beam (6);

the bottom plate (13) is provided with a plurality of pore channels (22) for accommodating the support legs (8) on the wind source system framework;

the wind source system frame further comprises a second pressure plate (23) used for limiting the distance between the upper arms of the two C-shaped reinforcing plates (7) on the wind source system frame, and a second waist-shaped plug column (24) is inserted in a waist-shaped hole of the second pressure plate (23).

2. The welding fixture for the wind source system frame according to claim 1, wherein the pressing assembly (25) comprises an inverted U-shaped pressing plate (25-1), a cushion block (25-2) and a screw (25-3), wherein the cushion block (25-2) is fixedly arranged on the upper end surface of the bottom plate (13), the inverted U-shaped pressing plate (25-1) is overlapped on the upper end surface of the cushion block (25-2), the inverted U-shaped pressing plate (25-1) is fixedly connected with a threaded hole in the cushion block (25-2) through the screw (25-3) penetrating through a central hole, and the length of the inverted U-shaped pressing plate (25-1) is less than the distance between the first cross beam (1) and the second cross beam (2).

3. The welding fixture of the wind source system frame according to claim 2, wherein the clamping assembly (19) comprises a fifth base plate (19-1), an L-shaped plate body (19-2), a fourth positioning pin (19-3), a second positioning column (19-4) and a quick clamp (19-5), the fifth base plate (19-1), the second positioning column (19-4) and the quick clamp (19-5) are all fixedly arranged on the upper end surface of the base plate (13), the L-shaped plate body (19-2) is fixedly arranged on the upper end surface of the fifth base plate (19-1), the fourth positioning pin (19-3) is inserted and installed in a pin hole of a vertical plate of the L-shaped plate body (19-2), the second positioning columns (19-4) are correspondingly positioned at the front end and the rear end of the L-shaped plate body (19-2), the front side surface of the second positioning column (19-4) is flush with the front side surface of the vertical plate of the L-shaped plate body (19-2), and the quick clamps (19-5) are correspondingly positioned on the left side of the second positioning column (19-4) at intervals.

4. The welding jig for the wind source system frame according to claim 3, characterized in that a first base plate (26) for laying the first longitudinal beam (3), a second base plate (27) for laying the second longitudinal beam (4), a third base plate (28) for laying the third longitudinal beam (5), and a fourth base plate (29) for laying the fourth longitudinal beam (6) are sequentially and fixedly arranged on the upper end surface of the bottom plate (13) from left to right, the upper end surfaces of the first base plate (26), the second base plate (27), the third base plate (28), the fourth base plate (29), and the fifth base plate (19-1) are all located on the same horizontal plane, and the cushion block (25-2) is correspondingly located in a rectangular central hole of the second base plate (27).

5. The welding jig of wind regime system frame of claim 4, characterized in that, the first backing plate (26), the third backing plate (28) and the fourth backing plate (29) respectively comprise two, and the first backing plate (26), the third backing plate (28) and the fourth backing plate (29) are respectively and fixedly arranged at the front side and the rear side of the upper end surface of the bottom plate (13).