Welding device for forming machining of steel structure truss

Abstract

The invention relates to the technical field of steel structure machining, in particular to a welding device for steel structure truss forming machining, which comprises a shell and a welding machine body, and further comprises connecting plates bolted to the two sides of the interior of the shell, electric hydraulic rods are arranged on the two sides of the interior of the shell, and the electric hydraulic rods penetrate through the connecting plates and are fixed to the penetrating positions of the electric hydraulic rods; an output shaft of the electric hydraulic rod is in bolted connection with a vertical plate, and the bottom of the vertical plate is in bolted connection with a movable plate; an electric hydraulic rod is started to drive the front end of a hollow column to enter the inner side of a round pipe fitting, a plate is attracted through the action of an inserting groove and a magnet, an electric cylinder is started to drive a long rod and a ring body to move, a transmission gear drives a clamp to be closed, a plurality of plates are fixed at the same time, and the angle and distance between the plates are guaranteed; and in the welding process, a worker does not need to continuously hold the plate with hands, and skewing or insufficient welding caused by sliding of the plate held with the hands is avoided.

Description

Technical Field

[0001] This invention relates to the field of steel structure processing technology, specifically to a welding device for forming and processing steel structure trusses. Background Technology

[0002] Steel trusses are composed of straight members, typically in the form of triangular units in planar or spatial structures. Their core function is to efficiently transfer loads through axial force on the members, achieving large-span coverage. Truss members mainly bear axial tension or compression, making full use of material strength. Compared to solid-web beams, they save materials, reduce self-weight, and increase stiffness, and are widely used in roofs, bridges, towers, and other structures in industrial and civil buildings. Circular tube trusses are a type of steel truss, composed of multiple circular tubes. During the forming and processing of these tubes, plates are usually welded to their ends. This welding is primarily based on mechanical and structural requirements: firstly, welded plates enhance the connection strength of nodes, preventing instability due to localized stress concentration, especially under cantilever or directional load conditions, where plates improve the bending and shear resistance of nodes; secondly, plates optimize the cross-sectional characteristics of members, matching load distribution by adjusting plate thickness or shape, while facilitating connections with other components (such as support systems), ensuring the geometric invariance and stability of the overall structure.

[0003] Currently, on outdoor construction sites, welding of circular tube trusses needs to be carried out on-site. Especially when welding plates onto the surface of circular tubes, the smooth surface of the tubes requires continuous manual support from the welders, which can easily cause the plates to slip, resulting in incomplete welds or misalignment. Furthermore, workers need to pre-draw lines on the surface of the tubes to clearly position the plates, but manually placing the plates makes it difficult to ensure equal distances or angles between them. Deviations in angle or distance can cause uneven stress distribution at the joints, concentrating the designed evenly distributed force in localized areas, leading to a sharp increase in stress far exceeding the material's design load-bearing capacity, easily causing fatigue failure or brittle fracture. Additionally, during the welding process, the plates located below the lower end of the tubes require workers to bend over and use a welding torch to weld them, especially in outdoor construction sites lacking rotating equipment. After welding, the weld spatter needs to be ground down, which is quite inconvenient. Summary of the Invention

[0004] The purpose of this invention is to provide a welding device for forming and processing steel trusses, which has the advantages of convenient overall movement, the ability to clamp and fix multiple plates, and the guarantee of the distance and angle between the plates.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding device for forming and processing steel structure trusses, comprising a housing and a welding machine body, and further comprising: Connecting plates are bolted to both sides inside the housing. Electro-hydraulic rods are also provided on both sides inside the housing. The electro-hydraulic rods pass through the connecting plates and are fixed to each other at the point of penetration. The output shaft of the electro-hydraulic rod is bolted to a vertical plate. A movable plate is bolted to the bottom of the vertical plate. Vertical plates are bolted to both sides of the top of the movable plate. A hollow column is rotatably connected to the surface of the vertical plate. A drive motor for driving the hollow column to rotate is also bolted to the top of the movable plate. Several fixed columns are bolted to the outer surface of the hollow column. A connecting seat is bolted to one end of the fixed column away from the hollow column. Rotating rods are rotatably connected to two points on the inner side of the connecting seat. Transmission gears are bolted to the surfaces of the rotating rods on both sides. Clamps are welded to the surfaces of the rotating rods. A synchronization control component for controlling the synchronous closing of multiple clamps, a support mechanism is provided on both sides of the housing, and a positioning mechanism is provided inside and on the surface of the hollow column.

[0006] Preferably, the synchronization control component includes an electric cylinder, a long rod, and a connecting rod. Two sets of electric cylinders are respectively bolted to the upper and lower sides inside the hollow column. One end of the long rod is bolted to a circular plate, which is slidably connected to the inner wall of the hollow column. Movable blocks are also bolted to both sides of the long rod's surface, and these movable blocks are slidably connected to the inner wall of the hollow column. Several connecting rods are bolted to the surface of one of the movable blocks. A transverse groove for the moving connecting rod is also provided on the surface of the hollow column. A ring is bolted to the end of the connecting rod away from the movable block. Several racks are bolted to the surface of the ring near the connecting seat, and the racks mesh with the transmission gears.

[0007] Preferably, the surface of the connector is further bolted with a slot, and a plurality of magnets are fixed to the inner wall of the slot.

[0008] Preferably, the support mechanism includes a support platform, legs, and rollers. The legs are bolted to the bottom of the support platform, and the rollers are fixed to the support platform through bearing seats. Both sides of the housing are also bolted with shelves, and the surfaces of the shelves are provided with through holes.

[0009] Preferably, the inner wall of the support platform is a concave arc shape, and the number of rollers is several and they are distributed in a ring array.

[0010] Preferably, the positioning mechanism includes a sliding hole, a movable column, and a rubber layer. The sliding hole is a plurality of holes and is formed on the surface of the hollow column. The movable column is slidably connected to the inner wall of the sliding hole. The rubber layer is fixed to the end of the movable column away from the long rod. The end of the movable column near the long rod is recessed and welded with a connecting column. The surface of the long rod is bolted with a plurality of inclined channels.

[0011] Preferably, both sides of the inner wall of the inclined channel are designed with an arc shape.

[0012] Preferably, a fixing sleeve is bolted to both sides inside the housing and below the connecting plate. A sleeve is fixed to the inner wall of the fixing sleeve, and a telescopic rod is slidably connected to the inner wall of the sleeve. The other end of the telescopic rod is bolted to the vertical plate.

[0013] Preferably, the output shaft of the drive motor is connected to the hollow column via gear transmission.

[0014] Preferably, a storage battery is also provided inside the housing.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses an electric hydraulic rod to drive the front end of the hollow column into the inner side of the round tube, and uses the slot and magnet to attract the plate. The electric cylinder is activated to drive the long rod and the ring to move, so that the transmission gear drives the clamp to close, fixing multiple plates at the same time, ensuring the angle and distance between the plates. During the welding process, there is no need for the operator to continuously hold the plate, avoiding the skewing or poor welding caused by the slippage of the plate.

[0016] 2. In this invention, the electric cylinder drives the long rod to move, which in turn moves the inclined channel, changing the position of the connecting column inside the inclined channel. This allows the movable column to extend outward from the sliding hole, so that the rubber layer fits against the inner wall of the round tube, achieving internal clamping and positioning. The drive motor is then turned on to rotate the hollow column, which, in conjunction with the rollers on the support platform, causes the multiple plates and round tubes held by the fixture to rotate and flip, allowing the unwelded plates below to flip to the top for welding operations.

[0017] 3. The present invention uses the combination of the shelf and the through hole to allow the legs of the support platform to enter the interior of the through hole, and place the support platform on both sides of the device, making the overall movement of the device more convenient, so as to deploy and use it on outdoor construction sites. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure in this invention; Figure 2 This is a schematic cross-sectional view of the shell structure in this invention; Figure 3 This is a schematic diagram of the movable plate and its surrounding structure in this invention; Figure 4 This is a schematic diagram of the structure of the present invention during operation; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A; Figure 6 This is a schematic diagram of the internal and external structure of the hollow column in this invention; Figure 7 This is a schematic diagram showing the posture of the inner and outer structures of the hollow column during operation of the present invention; Figure 8 This is a partial structural diagram of the synchronization control component in this invention; Figure 9 This is a schematic diagram of a half-section of the hollow column in this invention; Figure 10 This is a partial structural schematic diagram of the positioning mechanism in this invention; Figure 11 This is a schematic diagram of the slot structure in this invention; Figure 12 This is a schematic diagram of the support platform in this invention; Figure 13 This is a schematic diagram of the structure of the movable plate and sleeve in this invention.

[0019] In the diagram: 1. Housing; 2. Welding machine body; 3. Battery; 4. Support mechanism; 41. Support platform; 42. Outrigger; 43. Roller; 44. Shelf; 45. Through hole; 5. Casters; 6. Connecting plate; 7. Electro-hydraulic rod; 8. Vertical plate; 9. Moving plate; 10. Vertical plate; 11. Drive motor; 12. Hollow column; 13. Fixed column; 14. Connecting seat; 15. Rotating rod; 16. Clamp; 17. Transmission gear; 8. Slot; 19. Magnet; 20. Synchronization control component; 201. Electric cylinder; 202. Long rod; 203. Connecting rod; 204. Circular plate; 205. Ring body; 206. Movable block; 207. Rack; 208. Transverse groove; 21. Positioning mechanism; 211. Sliding hole; 212. Movable column; 213. Rubber layer; 214. Connecting column; 215. Inclined channel; 22. Fixed sleeve; 23. Sleeve; 24. Telescopic rod. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-13A welding device for forming and processing steel trusses includes a housing 1 and a welding machine body 2. The welding machine body 2 is a diesel generator-type welding machine suitable for outdoor use. The welding machine body 2 is fixed inside the housing 1. The welding machine body 2 is also used with a welding torch (not shown in the figure) during use. A battery 3 is also installed inside the housing 1. Casters 5 are bolted to the bottom of the housing 1 for moving the entire welding device. The device also includes a synchronous control component 20, a support mechanism 4, and a positioning mechanism 21. Both sides inside the housing 1 are... A connecting plate 6 is bolted to the housing 1. Electro-hydraulic rods 7 are also installed on both sides inside the housing 1. The electro-hydraulic rods 7 pass through the connecting plate 6 and are fixed to it at the point of penetration. Under the action of the connecting plate 6, the electro-hydraulic rods 7 are fixed to the inside of the housing 1. A vertical plate 8 is bolted to the output shaft of the electro-hydraulic rod 7. A movable plate 9 is bolted to the bottom of the vertical plate 8. Vertical plates 10 are bolted to both sides of the top of the movable plate 9. A hollow column 12 is rotatably connected to the surface of the vertical plate 10. A drive motor 11 is also bolted to the top of the movable plate 9. The output shaft of the drive motor 11... The hollow column 12 is connected to the drive motor 11 via gear transmission, which enables the output shaft of the drive motor 11 to rotate, thereby driving the hollow column 12 to rotate. Fixed sleeves 22 are also bolted to both sides inside the housing 1 and below the connecting plate 6. A sleeve 23 is fixedly fitted onto the inner wall of the fixed sleeve 22. A telescopic rod 24 is slidably connected to the inner wall of the sleeve 23. The other end of the telescopic rod 24 is bolted to the vertical plate 8. During movement, the moving plate 9, via the vertical plate 8, can drive the telescopic rod 24 to slide along the inner wall of the sleeve 23. This increases the stability of the moving plate 9, enabling it to bear the downward weight of the moving plate 9 and prevent the output shaft of the electric hydraulic rod 7 from being bent. Several fixed columns 13 are also welded to the outer surface of the hollow column 12. A connecting seat 14 is bolted to the end of the fixed column 13 away from the hollow column 12. Rotating rods 15 are rotatably connected to two points on the inner side of the connecting seat 14. Transmission gears 17 are bolted to the surface of the rotating rods 15 on both sides. The transmission gears 17 on both sides are the same size and have a gear ratio of one to one. A clamp 16 is welded to the surface of the rotating rod 15.

[0022] The synchronization control component 20 includes an electric cylinder 201, a long rod 202, and connecting rods 203. Two sets of electric cylinders 201 are respectively bolted to the upper and lower sides inside the hollow column 12. One end of the long rod 202 is bolted to a circular plate 204, which is slidably connected to the inner wall of the hollow column 12. Movable blocks 206 are bolted to both sides of the surface of the long rod 202, and these movable blocks 206 are slidably connected to the inner wall of the hollow column 12. Several connecting rods 203 are bolted to the surface of one of the movable blocks 206. A transverse groove 208 is also provided on the surface of the hollow column 12 for the moving connecting rods 203. The connecting rods 203 are located away from the movable blocks 201. One end of 06 is bolted with a ring 205. Several racks 207 are bolted to the surface of the ring 205 near the connecting seat 14, and the racks 207 mesh with the transmission gear 17. The range of motion of the ring 205 is limited by the sliding distance of the connecting rod 203 on the inner wall of the transverse groove 208. Therefore, the length of the tooth distribution on the surface of the rack 207 is designed to be greater than the length of the inner wall of the transverse groove 208, so that the rack 207 will not disengage from the surface of the transmission gear 17 within the range of motion of the ring 205 driving the rack 207. The surface of the connecting seat 14 is also bolted with a slot 18, and several magnets 19 are fixed on the inner wall of the slot 18.

[0023] The support mechanism 4 includes a support platform 41, legs 42, and rollers 43. The legs 42 are bolted to the bottom of the support platform 41. The rollers 43 are fixed to the support platform 41 through bearing seats, which allows the rollers 43 to rotate. The inner wall of the support platform 41 has a concave arc design. There are several rollers 43 arranged in a circular array to adapt to the arc surface of the steel pipe structure. Shelves 44 are bolted to both sides of the housing 1. Through holes 45 are opened through the surface of the shelves 44. The support platform 41 is hollow and made of steel. The operator lifts the support platform 41 so that its legs 42 are aligned with the through holes 45 and then puts it in, so that the legs 42 pass through the through holes 45. Then the support platform 41 is placed on top of the shelves 44 so that the support mechanism 4 moves together with the device.

[0024] The positioning mechanism 21 includes a sliding hole 211, a movable column 212, and a rubber layer 213. The sliding hole 211 is a plurality of holes and is formed on the surface of the hollow column 12. The movable column 212 is slidably connected to the inner wall of the sliding hole 211. The rubber layer 213 is fixed to the end of the movable column 212 away from the long rod 202. The end of the movable column 212 near the long rod 202 is recessed and a connecting column 214 is welded thereon. The surface of the long rod 202 is bolted with a plurality of inclined channels 215. Both sides of the inner wall of the inclined channel 215 are arc-shaped to adapt to the arc-shaped surface of the connecting column 214, so that the connecting column 214 can stay at both ends of the inner wall of the inclined channel 215.

[0025] During use, the support platform 41 in the support mechanism 4 is placed on both sides under the action of the shelf 44, pushing the entire device to move, which can drive the support mechanism 4 to move synchronously. After arriving at the construction site where the circular tube truss needs to be welded (the construction site is generally equipped with power supply facilities, which are used to power the device. The device's own battery 3 can also allow the device to work for a period of time in the absence of power supply facilities. The device itself uses the drive motor 11, electric hydraulic rod 7 and electric cylinder 201 for power. These electrical components do not need to run for a long time, only for short periods of time), the device is positioned at the location where the circular tube is placed, and the support platform 41 is removed. The lower part is positioned in front of the device itself, with a distance maintained. Then, the operator lifts the round tube to be welded, places it inside the support platform 41, and ensures it contacts the roller 43 to support the tube. The electric hydraulic rod 7 is activated, extending its output shaft to move the moving plate 9 closer to the tube, allowing the front end of the hollow column 12 to enter the tube. Then, the plates are picked up sequentially, aligned with the magnet 19, and inserted into the inner wall of the slot 18, fitting against it. The magnet 19 provides temporary fixation. Since the clamps 16 open simultaneously, the operator cannot fix one plate at a time before proceeding to the next, using the magnet 19. 9. Implement temporary clamping and fixing. After preparation, activate the electric cylinder 201, extending its output shaft to move the circular plate 204, long rod 202, and movable block 206 together. The movable block 206, through the connecting rod 203, moves the ring 205 closer to the connecting seat 14, which in turn moves the rack 207 synchronously. The rack 207 drives the meshing transmission gear 17 to rotate, which in turn drives another corresponding transmission gear 17 to rotate. This causes the two rotating rods 15 on the same set of connecting seats 14 to rotate, and drives the clamps 16 on both sides to close, clamping and fixing the plates. This completes the synchronous fixing of multiple plates and secures multiple plates to the same circular line. The plates are positioned evenly, eliminating the need for continuous manual support during welding. The plates are accurately positioned, eliminating the need for workers to mark lines on the surface of the round pipes. The device, shown in the figure, consists of six sets of clamps 16, suitable for welding 2, 3, or 6 plates. Some round pipes require welding 2, some 3, and some as many as 6. For welding 2 plates, simply fix the plate on the upper and lower clamps 16. For welding 3 plates, fix the plate on the upper clamp 16 and the two lower clamps on the left and right. For welding 6 plates, all clamps 16 hold and fix one plate at a time.

[0026] As the long rod 202 moves the ring 205 closer to the connecting seat 14, it can also move the inclined channel 215 on the surface. Previously, the connecting post 214 was located on the inner wall of the inclined channel 215 near the center of the long rod 202 (e.g., Figure 6As shown), the movable column 212 is located on the inner wall of the sliding hole 211. After the output shaft of the electric cylinder 201 extends, the connecting column 214 is located on the inner wall of the inclined channel 215 away from the center of the long rod 202 (as shown). Figure 7 As shown, since the movable column 212 cannot move horizontally, it moves outward along the inner wall of the sliding hole 211, causing the rubber layer 213 to adhere to the inner wall of the round tube, achieving internal clamping and positioning the hollow column 12 and the round tube. Then, a welding torch is used to weld the plate fixed to the upper clamp 16 onto the surface of the round tube. After the upper three sets of plates are welded, the weld scars are ground off, and welding is stopped. During the welding of the lower plates, the drive motor 11 is turned on, and its output shaft drives the hollow column 12 to rotate via gears, thereby driving... The round tube rotates easily due to the design of the roller 43. The friction between the multiple rubber layers 213 and the inner wall of the round tube is sufficient to drive the round tube to rotate. Moreover, the clamp 16 follows the rotation of the hollow column 12 to make a circular motion, so that the clamped plate remains synchronized during the rotation and the position of the plate is not shifted. Then the lower side of the round tube and the three plates below it rotate to the upper side for welding again. In this way, the round tube can be flipped on the outdoor construction site, which makes it convenient for workers to weld the plates and round tubes and grind the weld slag.

[0027] After the welding work is completed, the electric cylinder 201 is activated to retract its output shaft, which drives the movable column 212 back into the sliding hole 211. At the same time, the ring 205 drives the rack 207 away from the connecting seat 14, allowing the clamp 16 to open and release the positioning. Then, the electric hydraulic rod 7 is activated to retract its output shaft, allowing the moving plate 9 to approach the housing 1. Then, the drive motor 11 is activated again to drive the hollow column 12 to move in the opposite direction to the previous movement, preventing the power supply line connecting the electric cylinder 201 inside the hollow column 12 from being twisted off by the hollow column 12 rotating more than a few turns. When the moving plate 9 drives the clamp 16 away from the round tube, the slot 18 can also move, allowing the magnet 19 to slide along the surface of the plate and eventually fall off.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for forming and processing steel trusses, comprising a housing (1) and a welding machine body (2), characterized in that, Also includes: Connecting plates (6) are bolted to both sides inside the housing (1). Electric hydraulic rods (7) are also provided on both sides inside the housing (1). The electric hydraulic rods (7) pass through the connecting plates (6) and are fixed to each other at the point of penetration. The output shaft of the electric hydraulic rods (7) is bolted to a vertical plate (8). A movable plate (9) is bolted to the bottom of the vertical plate (8). Vertical plates (10) are bolted to both sides of the top of the movable plate (9). A hollow column (12) is rotatably connected to the surface of the vertical plate (10). A drive motor (11) for driving the hollow column (12) to rotate is also bolted to the top of the movable plate (9). Several fixed posts (13) are bolted to the outer surface of the hollow column (12). A connecting seat (14) is bolted to one end of the fixed post (13) away from the hollow column (12). A rotating rod (15) is rotatably connected to two points on the inner side of the connecting seat (14). A transmission gear (17) is bolted to the surface of the rotating rod (15) on both sides. A clamp (16) is welded to the surface of the rotating rod (15). A synchronous control assembly (20) for controlling the synchronous closing of multiple clamps (16) is provided. Support mechanisms (4) are also provided on both sides of the housing (1). Positioning mechanisms (21) are also provided inside and on the surface of the hollow column (12).

2. The welding device for forming and processing steel trusses according to claim 1, characterized in that: The synchronization control component (20) includes an electric cylinder (201), a long rod (202), and a connecting rod (203). Two sets of electric cylinders (201) are respectively bolted to the upper and lower sides inside the hollow column (12). One end of the long rod (202) is bolted to a circular plate (204), which is slidably connected to the inner wall of the hollow column (12). Movable blocks (206) are also bolted to both sides of the long rod (202), and the movable blocks (206) are connected to the hollow column (12). The inner wall of the hollow column (12) is slidably connected, and several connecting rods (203) are bolted to the surface of the movable block (206) on one side. A transverse groove (208) for the connecting rod (203) to move is also provided on the surface of the hollow column (12). A ring body (205) is bolted to the end of the connecting rod (203) away from the movable block (206). Several racks (207) are bolted to the surface of the ring body (205) near the connecting seat (14), and the racks (207) mesh with the transmission gear (17).

3. The welding device for forming and processing steel trusses according to claim 1, characterized in that: The surface of the connector (14) is also bolted with a slot (18), and a number of magnets (19) are fixed on the inner wall of the slot (18).

4. The welding device for forming and processing steel trusses according to claim 1, characterized in that: The support mechanism (4) includes a support platform (41), a support leg (42) and a roller (43). The support leg (42) is bolted to the bottom of the support platform (41). The roller (43) is fixed to the support platform (41) through a bearing seat. A shelf (44) is also bolted to both sides of the housing (1). A through hole (45) is opened through the surface of the shelf (44).

5. The welding device for forming and processing steel trusses according to claim 4, characterized in that: The inner wall of the support platform (41) is a concave arc design, and the number of rollers (43) is several and they are arranged in a ring array.

6. The welding device for forming and processing steel structure trusses according to claim 1, characterized in that: The positioning mechanism (21) includes a sliding hole (211), a movable column (212), and a rubber layer (213). There are several sliding holes (211) and they are opened on the surface of the hollow column (12). The movable column (212) is slidably connected to the inner wall of the sliding hole (211). The rubber layer (213) is fixed to the end of the movable column (212) away from the long rod (202). The end of the movable column (212) near the long rod (202) is recessed and welded with a connecting column (214). Several inclined channels (215) are bolted to the surface of the long rod (202).

7. The welding device for forming and processing steel trusses according to claim 6, characterized in that: Both sides of the inner wall of the inclined channel (215) are designed with an arc shape.

8. The welding device for forming and processing steel structure trusses according to claim 1, characterized in that: On both sides of the inside of the housing (1) and below the connecting plate (6), there are also fixed sleeves (22). The inner wall of the fixed sleeve (22) is fitted with a sleeve (23). The inner wall of the sleeve (23) is slidably connected with a telescopic rod (24). The other end of the telescopic rod (24) is connected to the vertical plate (8).

9. The welding device for forming and processing steel structure trusses according to claim 1, characterized in that: The output shaft of the drive motor (11) is connected to the hollow column (12) via gear transmission.

10. The welding device for forming and processing steel structure trusses according to claim 1, characterized in that: The housing (1) also contains a storage battery (3).

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