Welding tool for lifting appliance telescopic beam structure

Abstract

The invention relates to the technical field of welding tools, and particularly discloses a lifting appliance telescopic beam structure welding tool which comprises a main beam assembly, first fixing devices, second fixing devices and a telescopic beam, and the first fixing devices are fixedly arranged on the left side and the right side of the outer wall of the top of the main beam assembly; second fixing devices are fixedly arranged on the front side and the rear side of the outer wall of the top of the main beam assembly, a plurality of telescopic beams can be arranged on the bottom face of the main beam assembly, and the first fixing devices and the second fixing devices can be matched with the telescopic beams. According to the technical scheme, the lifting appliance telescopic beam structure welding tool is flexible in structure, a single telescopic beam and a plurality of telescopic beams can be flexibly fixed, the service life of a fixing device is long, potential safety hazards are reduced, open type design is convenient to inspect, and the lifting appliance telescopic beam structure welding tool is suitable for welding of the multiple telescopic beams when the multiple telescopic beams are located in different directions of the bottom face of a main beam assembly. And flexible adjustment and fixation can still be performed.

Description

Technical Field

[0001] The invention relates to the technical field of welding tooling, in particular to a welding tooling for a telescopic beam structure of a sling. Background Art

[0002] In industrial production, telescopic beams of slings are widely used in material handling, welding tooling, automated production lines and other fields. Traditional telescopic beam fixing methods usually adopt bolt tightening, manual clamping or single-direction positioning structure. Traditional tooling is usually only suitable for fixing telescopic beams of a single size or a single direction, and it is difficult to adapt to the needs of telescopic beams of different specifications or different installation positions. When it is necessary to adjust the installation angle of the telescopic beam or fix multiple telescopic beams, it is often necessary to replace or redesign the tooling, resulting in reduced production efficiency.

[0003] In the prior art, the positioning of the telescopic beam mostly relies on manual adjustment, which is prone to positioning deviations due to operational errors, affecting the welding accuracy. In addition, the traditional clamping mechanism is easily affected by vibration or external forces during the welding process, causing the telescopic beam to loosen or shift, affecting the processing quality; traditional tooling usually relies on manual adjustment, such as manually tightening bolts or adjusting clamps, which is not only time-consuming and labor-intensive, but also difficult to achieve rapid replacement or precise positioning, and cannot meet the needs of modern automated production.

[0004] Some welding tools use a closed structure, which limits the installation, adjustment and inspection process of the telescopic beam. It is difficult to observe the welding status in real time or make quick adjustments, affecting processing efficiency and quality control. Existing fixtures are usually only suitable for specific types of telescopic beams. When the size or installation method of the telescopic beam changes, the tooling needs to be redesigned or replaced, which increases production costs and management difficulties. Summary of the invention

[0005] The object of the present invention is to provide a welding tool for a telescopic beam structure of a sling to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding tool for a telescopic beam structure of a sling, comprising a main beam assembly, a first fixing device, a second fixing device and a telescopic beam, the first fixing device being fixedly provided on both sides of the left and right sides of the top outer wall of the main beam assembly, the second fixing device being fixedly provided on both sides of the front and rear sides of the top outer wall of the main beam assembly, a plurality of telescopic beams can be provided on the bottom surface of the main beam assembly, the first fixing device and the second fixing device can cooperate with the telescopic beam to adjust and fix the telescopic beam, thereby performing welding between the main beam assembly and the telescopic beam.

[0007] Preferably, the main beam assembly includes a first concave plate, a first rectangular plate, a first groove, a second groove, a first rectangular block, a second rectangular block, a second concave plate, a second rectangular plate and a third rectangular block; The top and bottom surfaces of the first concave plate are fixedly provided with a first rectangular plate, and the two first rectangular plates are divided into a top end and a bottom end, the top surfaces of the two first rectangular plates are provided with a first groove running through from top to bottom in the center, the front sides of the two first rectangular plates are provided with a plurality of equidistant second grooves, and the plurality of second grooves run through from top to bottom, the two first rectangular plates are divided into a plurality of small rectangular plates by the plurality of first grooves and second grooves, the small rectangular plates of the two first rectangular plates are divided into two groups, front and rear, and the front front end of the plurality of small rectangular plates of the front group of the first rectangular plate at the bottom end is fixedly provided with a first rectangular block one end of the first rectangular block, the other end of the first rectangular block is fixedly set on the bottom surface of the front group of several small rectangular plates of the first rectangular plate at the top end, the top surface of the first rectangular plate at the top end is fixedly set with a second concave plate, the top surface of the second concave plate is fixedly set with a second rectangular plate, the front end of the top group of several small rectangular plates of the first rectangular plate at the top end is fixedly set with one end of the second rectangular block, the other end of the second rectangular block is fixedly set on the bottom surface of the second rectangular plate, and the second rectangular plate connects and fixes the front group of several small rectangular plates of the two first rectangular plates, and the third rectangular block is fixedly set at the center of the top surface of the second rectangular plate.

[0008] Preferably, the plurality of first grooves and the second grooves of the two first rectangular plates are interlaced and communicated with each other.

[0009] Preferably, the main beam assembly further comprises a first round rod, a round plate, a second round rod and a third groove; Several first round rods that can slide forward, backward, left and right are arranged in the first groove and the second groove in the first rectangular plate at the top, several first round rods are fixedly provided with round plates on the top surfaces, several second round rods are fixedly provided with bottom surfaces of several first round rods, and third grooves are opened on the bottom surfaces of several second round rods.

[0010] Preferably, the third groove matches the positioning pin at the center of the top surface of the telescopic beam.

[0011] Preferably, the first fixing device comprises a first electric push rod, a second electric push rod, a fourth rectangular block, a first cavity, a third rectangular plate, a first rack, a first rotating shaft and a first cylindrical block; The first fixing devices are fixedly provided on both left and right sides of the outer wall of the third rectangular block, one end of the first electric push rod is fixedly provided on the left side of the outer wall of the third rectangular block, the other end of the first electric push rod is fixedly provided on the outer wall of one end of the second electric push rod, and the other end of the second electric push rod is fixedly provided on the fourth rectangular block, a first cavity running through the left and right is opened in the fourth rectangular block, a third rectangular plate capable of moving left and right is provided in the bottom end of the first cavity, first racks are fixedly provided on both front and rear ends of the top face of the third rectangular plate, first rotating shafts are sleeved in the centers of the outer walls on both front and rear sides of the fourth rectangular block, and first cylindrical blocks are sleeved in the two first rotating shafts.

[0012] Preferably, the first fixing device further comprises a first gear and a first brake motor; A first gear is fixedly provided at one end of the two first cylindrical blocks, and the first gear is arranged in the first cavity, the two first gears are meshed with the first rack, and the two first gears are located at one end of the first rotating shaft and at a certain distance, a first brake motor is fixedly provided at the other end of the two first rotating shafts, and the output end of the first brake motor is connected and fixed to the other end of the first cylindrical block.

[0013] Preferably, the second fixing device comprises a third electric push rod, a fourth electric push rod, a fifth rectangular block, a second cavity, a fourth rectangular plate, a second rack, a second rotating shaft and a second cylindrical block; The second fixing devices are fixedly provided on both the front and rear sides of the outer wall of the third rectangular block, one end of the third electric push rod is fixedly provided on the front side of the outer wall of the third rectangular block, the other end of the third electric push rod is fixedly provided with the outer wall of one end of the fourth electric push rod, and the other end of the fourth electric push rod is fixedly provided with a fifth rectangular block, a second cavity running through the front and rear is opened in the fifth rectangular block, a fourth rectangular plate capable of moving forward and backward is provided in the bottom end of the second cavity, second racks are fixedly provided on the left and right ends of the top surface of the fourth rectangular plate, a second rotating shaft is sleeved in the center of the outer walls on the left and right sides of the fifth rectangular block, and second cylindrical blocks are sleeved in the two second rotating shafts.

[0014] Preferably, the second fixing device further comprises a second gear and a second brake motor; A second gear is fixedly provided at one end of the two second cylindrical blocks, and the second gear is arranged in the second cavity, the two second gears are meshed with the second rack, and the two second gears are located at one end of the second rotating shaft and at a certain distance, a second brake motor is fixedly provided at the other end of the two second rotating shafts, and the output end of the second brake motor is connected and fixed to the other end of the second cylindrical block.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the combination of the first concave plate, the first rectangular plate, the first groove, the second groove and other components, this design can not only adapt to the fixation of a single telescopic beam, but also fix multiple telescopic beams at the same time, and is suitable for telescopic beams of different orientations and sizes, which greatly improves the versatility and flexibility of the tooling; the front side of the main beam assembly is an open design, which is convenient for observation and operation, simplifies the adjustment steps during the welding process, and improves work efficiency.

[0016] 2. The telescopic beam is precisely positioned by the cooperation of the first round rod, the round plate, the second round rod and the third groove. The third groove matches the positioning pin at the center of the top surface of the telescopic beam. No matter how the second round rod slides, the positioning pin and the groove can be precisely docked, thereby ensuring that the fixed position of the telescopic beam is accurate.

[0017] 3. The first fixing device and the second fixing device adopt an electric push rod and a gear rack transmission mechanism. The first brake motor drives the first gear to drive the first rack to move, so as to realize the clamping and fixing of the telescopic beam, and at the same time can adjust the direction offset of the telescopic beam. The self-locking function of the first brake motor ensures the stability of the clamping and prevents loosening or displacement during welding. The bidirectional rotation function of the first brake motor can realize the rapid clamping and release of the telescopic beam, thereby improving the adjustment efficiency of the welding tooling. The self-locking function of the first brake motor not only improves the fixing effect, but also enhances the safety of the tooling and prevents clamping failure caused by external force or vibration.

[0018] To sum up, the technical solution of the welding tooling for the telescopic beam structure of the sling provided by the present invention has a flexible structure, can flexibly fix a single telescopic beam and multiple telescopic beams, the fixing device has a long service life, reduces safety hazards, and the open design is easy to inspect. It is suitable for multiple telescopic beams that can still be flexibly adjusted and fixed when they are located at different positions on the bottom surface of the main beam assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the main beam assembly structure of the present invention; Figure 3 It is a schematic diagram of the exploded structure of the main beam assembly of the present invention; Figure 4 This is a schematic diagram of the second round rod structure of the main beam assembly of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the second round rod of the main beam assembly of the present invention; Figure 6 It is a schematic structural diagram of the first fixing device of the present invention; Figure 7 This is a schematic structural diagram of the first rotating shaft connection assembly of the first fixing device of the present invention; Figure 8 is a schematic cross-sectional structure diagram of a first fixing device of the present invention; Fig. 9 is a schematic cross-sectional structure diagram of a second fixing device of the present invention; Fig.10 It is a schematic diagram of the second cavity structure of the second fixing device of the present invention.

[0020] In the figure: 1, main beam assembly; 11, first concave plate; 12, first rectangular plate; 13, first groove; 14, second groove; 15, first rectangular block; 16, second rectangular block; 17, second concave plate; 18, second rectangular plate; 19, third rectangular block; 110, first round rod; 111, round plate; 112, second round rod; 113, third groove.

[0021] The first fixing device; 21. The first electric push rod; 22. The second electric push rod; 23. The fourth rectangular block; 24. The first cavity; 25. The third rectangular plate; 26. The first rack; 27. The first rotating shaft; 28. The first cylindrical block; 29. ​​The first gear; 210. The first brake motor.

[0022] 3. Second fixing device; 31. Third electric push rod; 32. Fourth electric push rod; 33. Fifth rectangular block; 34. Second cavity; 35. Fourth rectangular plate; 36. Second rack; 37. Second rotating shaft; 38. Second cylindrical block; 39. Second gear; 310. Second brake motor.

[0023] 4. Telescopic beam. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 10The present invention provides a technical solution for welding tooling of a telescopic beam structure of a sling: it includes a main beam assembly 1, a first fixing device 2, a second fixing device 3 and a telescopic beam 4, the first fixing device 2 is fixedly arranged on the left and right sides of the top outer wall of the main beam assembly 1, the second fixing device 3 is fixedly arranged on the front and rear sides of the top outer wall of the main beam assembly 1, the first fixing device 2 and the second fixing device 3 have the same principle, and can be adjusted and clamped in different directions, a plurality of telescopic beams 4 can be arranged on the bottom surface of the main beam assembly 1, a single telescopic beam 4 and a plurality of contraction beams 4 can be arranged on the bottom surface of the main beam assembly 1, the first fixing device 2 and the second fixing device 3 can cooperate with the telescopic beam 4, the first fixing device 2 and the second fixing device 3 can adjust and fix the telescopic beam 4 or a plurality of telescopic beams 4, and this fixing method can be applicable to multiple telescopic beams 4 when they are located at different orientations on the bottom surface of the main beam assembly 1, and they can still be flexibly adjusted and fixed.

[0026] As a preferred embodiment, further, the main beam assembly 1 includes a first concave plate 11, a first rectangular plate 12, a first groove 13, a second groove 14, a first rectangular block 15, a second rectangular block 16, a second concave plate 17, a second rectangular plate 18 and a third rectangular block 19. The first rectangular plate 12 is fixedly arranged on the top and bottom surfaces of the first concave plate 11, and the two first rectangular plates 12 are divided into a top end and a bottom end. The top surfaces of the two first rectangular plates 12 are each provided with a first groove 13 that runs through the top and bottom ends. The front sides of the two first rectangular plates 12 are each provided with a plurality of equidistant second grooves 14, and the plurality of second grooves 14 run through the top and bottom ends. The plurality of first grooves 13 and the second grooves 14 of the two first rectangular plates 12 are staggered and connected. The two first rectangular plates 12 are each divided into a plurality of small rectangular plates by the plurality of first grooves 13 and second grooves 14. The small rectangular plates of the two first rectangular plates 12 are each divided into two groups, front and rear. The front group of the first rectangular plate 12 at the bottom has a plurality of small rectangular plates. One end of a first rectangular block 15 is fixedly provided at the front end of the top face of the plate, and the other end of the first rectangular block 15 is fixedly provided on the bottom surface of a plurality of small rectangular plates in the front group of the top first rectangular plate 12, and a second concave plate 17 is fixedly provided on the top surface of the top first rectangular plate 12, and a second rectangular plate 18 is fixedly provided on the top surface of the second concave plate 17; one end of a second rectangular block 16 is fixedly provided at the front end of the top face of a plurality of small rectangular plates in the front group of the top first rectangular plate 12, and the other end of the second rectangular block 16 is fixedly provided on the bottom surface of the second rectangular plate 18, and the second rectangular plate 18 connects and fixes a plurality of small rectangular plates in the front group of the two first rectangular plates 12, and a plurality of first rectangular blocks 15 and a plurality of second rectangular blocks 16 are connected and fixed to the small rectangular plates in the front group of the two first rectangular plates 12, and a third rectangular block 19 is fixedly provided at the center of the top surface of the second rectangular plate 18, and the front side of this component is open, and this design structure is convenient for the use of subsequent devices, and observation is more convenient and operation is simpler.

[0027] As a preferred embodiment, the main beam assembly 1 further includes a first round rod 110, a circular plate 111, a second round rod 112 and a third groove 113. The first groove 13 and the second groove 14 in the top first rectangular plate 12 are provided with a plurality of first round rods 110 that can slide forward, backward, left and right. The top surfaces of the plurality of first round rods 110 are fixedly provided with circular plates 111, the bottom surfaces of the plurality of first round rods 110 are fixedly provided with second round rods 112, and the bottom surfaces of the plurality of second round rods 112 are provided with third grooves 113. The third groove 113 matches the locating pin at the center of the top surface of the telescopic beam 4. No matter how the second round rod 112 slides in the first groove 13 and the second groove 14 at the upper end through the first round rod 110, the third groove 113 can penetrate to the first groove 13 and the second groove 14 at the lower end. When the second round rod 112 moves to the specified position, it is connected to the locating pin at the center of the top surface of the telescopic beam 4.

[0028] As a preferred embodiment, further, the first fixing device 2 includes a first electric push rod 21, a second electric push rod 22, a fourth rectangular block 23, a first cavity 24, a third rectangular plate 25, a first rack 26, a first rotating shaft 27, a first cylindrical block 28, a first gear 29 and a first brake motor 210. The first fixing device 2 is fixedly arranged on both sides of the left and right outer walls of the third rectangular block 19. One end of the first electric push rod 21 is fixedly arranged on the left side of the outer wall of the third rectangular block 19, and one end of the outer wall of the second electric push rod 22 is fixedly arranged on the other end of the first electric push rod 21. The first electric push rod 21 and the second electric push rod 22 are three-section electric push rods with a longer unfolded length and an improved range of applicable models for telescopic beams 4 of different sizes. The other end of the second electric push rod 22 is fixedly arranged with a fourth rectangular block 23. A first cavity 24 that runs through left and right is opened in the fourth rectangular block 23. A third rectangular plate 25 that can move left and right is arranged at the bottom end of the first cavity 24. The third rectangular plate 25 has two front and rear surfaces on the top. The first ends are fixedly provided with first racks 26; the centers of the outer walls on the front and rear sides of the fourth rectangular block 23 are both sleeved with first rotating shafts 27, and the first cylindrical blocks 28 are sleeved in the two first rotating shafts 27. One end of the two first cylindrical blocks 28 is fixedly provided with a first gear 29, and the first gear 29 is arranged in the first cavity 24. The two first gears 29 are meshed with the first racks 26, and the two first gears 29 are located at one end of the first rotating shaft 27 and have a certain distance. The other ends of the two first rotating shafts 27 are fixedly provided with a first brake motor 210. The added function of the first brake motor 210 is that it has a self-locking structure. This self-locking has a certain fixing function, and can clamp and fix the telescopic beam 4 through the third rectangular plate 25, and can rotate in both clockwise and counterclockwise directions. The two first brake motors 210 both make the first gear 29 drive the first rack 26 to move the third rectangular plate 25 left and right, and the output end of the first brake motor 210 is connected and fixed to the other end of the first cylindrical block 28.

[0029] As a preferred embodiment, further, the second fixing device 3 includes a third electric push rod 31, a fourth electric push rod 32, a fifth rectangular block 33, a second cavity 34, a fourth rectangular plate 35, a second rack 36, a second rotating shaft 37, a second cylindrical block 38, a second gear 39 and a second brake motor 310. The second fixing device 3 is fixedly arranged on both sides of the front and rear of the outer wall of the third rectangular block 19, one end of the third electric push rod 31 is fixedly arranged on the front side of the outer wall of the third rectangular block 19, one end of the fourth electric push rod 32 is fixedly arranged on the other end of the third electric push rod 31, and the fifth rectangular block 33 is fixedly arranged on the other end of the fourth electric push rod 32. A second cavity 34 that runs through from front to back is opened in the fifth rectangular block 33, a fourth rectangular plate 35 that can move forward and backward is arranged in the bottom end of the second cavity 34, and second racks 36 are fixedly arranged on the left and right ends of the top surface of the fourth rectangular plate 35; the left and right ends of the fifth rectangular block 33 A second rotating shaft 37 is sleeved in the center of the side outer wall, and second cylindrical blocks 38 are sleeved in the two second rotating shafts 37. A second gear 39 is fixedly set at one end of the two second cylindrical blocks 38, and the second gear 39 is set in the second cavity 34. The two second gears 39 are meshed with the second rack 36, and the two second gears 39 are located at one end of the second rotating shaft 37 and have a certain distance. A second brake motor 310 is fixedly set at the other end of the two second rotating shafts 37, and the output end of the second brake motor 310 is connected and fixed to the other end of the second cylindrical block 38. This device has the same principle as the first fixing device 2 but a different shape. Both fixing methods can fix the horizontal and vertical telescopic beams 4. The workstation fixation is different, and the two fixing devices can fix better. By correcting and clamping the telescopic beam at 4 points, the mechanical structure of the two fixing devices increases the service life, and the open design is more intuitive and convenient for maintenance.

[0030] The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process. The specific operation is as follows: the device can install a single or multiple telescopic beams 4. It is necessary to install as many telescopic beams 4 as possible and to install equivalent second round rods 112. The first round rod 110 is passed through the front side of the outer wall of the main beam assembly 1 into the first groove 13 at the top end, so that the staff can adjust the position of the second round rod 112 in the first groove 13 or the second groove 14. Because the first grooves 13 and the second grooves 14 of the two first rectangular plates 12 are aligned up and down, the third groove 113 is connected to the first grooves 13 and the second grooves 14 of the first rectangular plate 12 at the bottom end no matter where it slides. The telescopic beam 4 is installed in the second groove 14, and a positioning pin is installed in the center of the top surface of the telescopic beam 4, and the positioning pin in the center of the top surface of the telescopic beam 4 is connected to the third groove 113. Because the telescopic beam 4 is not horizontally and vertically aligned, when the telescopic beam 4 is vertical, it is perpendicular to the main beam in a cross shape. A first electric push rod 21 of a first fixing device 2 moves outward and unfolds, and the second electric push rod 22 moves downward to keep the third rectangular plate 25 and the center of the outer wall of the telescopic beam 4 horizontal. When the main beam and the telescopic beam 4 are installed, the telescopic beam 4 has a positioning pin, so when the telescopic beam 4 is installed with the main beam, the telescopic beam 4 will definitely have a certain direction deviation with respect to the main beam, and the first gear 29 is driven to rotate by the two first brake motors 210. Because the two first brake motors 210 are both used to drive the first gear 29 to rotate, A gear 29 is meshed with the first rack 26, so that the first gear 29 rotates counterclockwise to drive the third rectangular plate 25 to push the center of the outer wall of the telescopic beam 4, because the outer wall of the third rectangular plate 25 is a right-angled surface, and it can push the telescopic beam 4 to be perpendicular to the main beam in a cross shape. Similarly, another first fixing device 2 is pushed to cooperate with a first fixing device 2 to clamp and fix the telescopic beam 4, so that the worker can perform welding. This design method can correct and adjust the telescopic beam 4 at any position of the main beam, and can also fix and clamp it; when the telescopic beam 4 is horizontal and overlaps with the main beam, a third electric push rod 31 of a second fixing device 3 moves outward and expands, and the fourth electric push rod 32 moves downward to make the fourth rectangular plate 3 5 is kept horizontal with the outer wall center of the telescopic beam 4, and the second gears 39 are driven to rotate by the two second brake motors 310. Because the two second gears 39 are meshed with the second rack 36, the second gear 39 rotates counterclockwise to drive the fourth rectangular plate 35 to push the outer wall center of the telescopic beam 4. Because the outer wall of the fourth rectangular plate 35 is a right-angled surface, it can push the telescopic beam 4 to overlap with the main beam. Similarly, another second fixing device 3 is pushed to cooperate with a second fixing device 3 to clamp and fix the telescopic beam 4, so that the worker can perform welding. The device can flexibly install a single or multiple telescopic beams 4, and when the telescopic beam 4 is adjusted to correct the position of the main beam, the main beam and the telescopic beam 4 can be fixed at the same time.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding tool for a telescopic beam structure of a sling, comprising a main beam assembly (1), a first fixing device (2), a second fixing device (3) and a telescopic beam (4), wherein the first fixing device (2) is fixedly arranged on both the left and right sides of the top outer wall of the main beam assembly (1), and the second fixing device (3) is fixedly arranged on both the front and rear sides of the top outer wall of the main beam assembly (1), and a plurality of telescopic beams (4) can be arranged on the bottom surface of the main beam assembly (1), and the first fixing device (2) and the second fixing device (3) can cooperate with the telescopic beam (4) to adjust and fix the telescopic beam (4), thereby welding the main beam assembly (1) and the telescopic beam (4).

2. The welding tool for the telescopic beam structure of a sling according to claim 1, characterized in that: The main beam assembly (1) comprises a first concave plate (11), a first rectangular plate (12), a first groove (13), a second groove (14), a first rectangular block (15), a second rectangular block (16), a second concave plate (17), a second rectangular plate (18) and a third rectangular block (19); The top and bottom surfaces of the first concave plate (11) are both fixedly provided with a first rectangular plate (12), and the two first rectangular plates (12) are divided into a top end and a bottom end. The top centers of the two first rectangular plates (12) are each provided with a first groove (13) that runs through from top to bottom. The front sides of the two first rectangular plates (12) are each provided with a plurality of equidistant second grooves (14), and the plurality of second grooves (14) run through from top to bottom. The two first rectangular plates (12) are each divided into a plurality of small rectangular plates by the plurality of first grooves (13) and second grooves (14). The small rectangular plates of the two first rectangular plates (12) are each divided into two groups, front and rear. The front ends of the plurality of small rectangular plates of the front group of the first rectangular plates (12) at the bottom end are each fixedly provided with a first rectangular block (15). The first rectangular block (15) is fixedly provided at one end of the first rectangular plate (12), the other end of each of the first rectangular blocks (15) is fixedly provided on the bottom surface of a front group of several small rectangular plates of the top first rectangular plate (12), the top surface of the first rectangular plate (12) is fixedly provided with a second concave plate (17), the top surface of the second concave plate (17) is fixedly provided with a second rectangular plate (18), the front end of each of the top groups of several small rectangular plates of the first rectangular plate (12) is fixedly provided with one end of a second rectangular block (16), the other end of each of the second rectangular blocks (16) is fixedly provided on the bottom surface of the second rectangular plate (18), and the second rectangular plate (18) is connected and fixedly provided with a front group of several small rectangular plates of two first rectangular plates (12), and a third rectangular block (19) is fixedly provided at the center of the top surface of the second rectangular plate (18).

3. A welding tool for a telescopic beam structure of a sling according to claim 2, characterized in that: The plurality of first grooves (13) and the second grooves (14) of the two first rectangular plates (12) are interlaced and communicated with each other.

4. The welding tool for the telescopic beam structure of a sling according to claim 3, characterized in that: The main beam assembly (1) further comprises a first round rod (110), a round plate (111), a second round rod (112) and a third groove (113); A plurality of first round rods (110) capable of sliding forward, backward, left and right are arranged in the first groove (13) and the second groove (14) in the first rectangular plate (12) at the top end; a circular plate (111) is fixedly arranged on the top surfaces of the plurality of first round rods (110); a second round rod (112) is fixedly arranged on the bottom surfaces of the plurality of first round rods (110); and a third groove (113) is opened on the bottom surfaces of the plurality of second round rods (112).

5. The welding tool for the telescopic beam structure of a sling according to claim 4, characterized in that: The third groove (113) matches the positioning pin at the center of the top surface of the telescopic beam (4).

6. The welding tool for the telescopic beam structure of a sling according to claim 5, characterized in that: The first fixing device (2) comprises a first electric push rod (21), a second electric push rod (22), a fourth rectangular block (23), a first cavity (24), a third rectangular plate (25), a first rack (26), a first rotating shaft (27) and a first cylindrical block (28); The first fixing device (2) is fixedly arranged on both left and right sides of the outer wall of the third rectangular block (19); one end of a first electric push rod (21) is fixedly arranged on the left side of the outer wall of the third rectangular block (19); the outer wall of one end of a second electric push rod (22) is fixedly arranged on the other end of the first electric push rod (21); a fourth rectangular block (23) is fixedly arranged on the other end of the second electric push rod (22); a first cavity (24) extending left and right is provided in the fourth rectangular block (23); a third rectangular plate (25) capable of moving left and right is provided in the bottom end of the first cavity (24); first racks (26) are fixedly arranged on both front and rear ends of the top surface of the third rectangular plate (25); first rotating shafts (27) are sleeved in the center of the outer walls on both front and rear sides of the fourth rectangular block (23); first cylindrical blocks (28) are sleeved in the two first rotating shafts (27).

7. The welding tool for the telescopic beam structure of a sling according to claim 6, characterized in that: The first fixing device (2) further comprises a first gear (29) and a first brake motor (210); A first gear (29) is fixedly provided at one end of the two first cylindrical blocks (28), and the first gear (29) is arranged in the first cavity (24), the two first gears (29) are meshed with the first rack (26), and the two first gears (29) are located at one end of the first rotating shaft (27) and at a certain distance, a first brake motor (210) is fixedly provided at the other end of the two first rotating shafts (27), and the output end of the first brake motor (210) is connected and fixed to the other end of the first cylindrical block (28).

8. The welding tool for the telescopic beam structure of a sling according to claim 7, characterized in that: The second fixing device (3) comprises a third electric push rod (31), a fourth electric push rod (32), a fifth rectangular block (33), a second cavity (34), a fourth rectangular plate (35), a second rack (36), a second rotating shaft (37) and a second cylindrical block (38); The outer wall of the third rectangular block (19) is fixedly provided with a second fixing device (3) on both the front and rear sides; one end of a third electric push rod (31) is fixedly provided on the front side of the outer wall of the third rectangular block (19); the outer wall of one end of a fourth electric push rod (32) is fixedly provided on the other end of the third electric push rod (31); the other end of the fourth electric push rod (32) is fixedly provided with a fifth rectangular block (33); a second cavity (34) extending from front to back is provided in the fifth rectangular block (33); a fourth rectangular plate (35) capable of moving forward and backward is provided in the bottom end of the second cavity (34); second racks (36) are fixedly provided on both the left and right ends of the top surface of the fourth rectangular plate (35); a second rotating shaft (37) is sleeved in the center of the outer walls on the left and right sides of the fifth rectangular block (33); and second cylindrical blocks (38) are sleeved in the two second rotating shafts (37).

9. The welding tool for the telescopic beam structure of a sling according to claim 8, characterized in that: The second fixing device (3) further comprises a second gear (39) and a second brake motor (310); A second gear (39) is fixedly provided at one end of the two second cylindrical blocks (38), and the second gear (39) is arranged in the second cavity (34), the two second gears (39) are meshed with the second rack (36), and the two second gears (39) are located at one end of the second rotating shaft (37) and at a certain distance, a second brake motor (310) is fixedly provided at the other end of the two second rotating shafts (37), and the output end of the second brake motor (310) is connected and fixed to the other end of the second cylindrical block (38).

Images