A portal welding device

Abstract

The present application relates to the technical field of welding, and discloses a portal welding device, which comprises a welding table, a portal frame fixedly installed on the top of the welding table, a hydraulic cylinder fixedly installed on the top of the portal frame, a control box fixedly connected to the output end of the hydraulic cylinder, a welding head fixedly connected to the bottom of the control box, symmetrical fixing frames fixedly connected to the top of the welding table, rotating rods one rotatably connected to the inner walls of the fixing frames, placing racks fixedly connected to the outer walls of the rotating rods one, and turnover assemblies arranged above the placing racks and used for driving the placing racks to respectively turn over to two sides, wherein the turnover angle and direction of the placing racks are accurately controlled, the accurate butt joint with a feeding assembly is realized, the steel pipe can be accurately dropped onto the placing racks, the steel pipe after welding can be smoothly slid and collected under the action of gravity after welding is completed, and the efficiency of the feeding and collecting links in the whole welding process is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of welding: specifically relates to a gantry welding device. BACKGROUND

[0002] Gantry welding is a large welding equipment composed of gantry, cross beam and processing table. It has stable structure, good rigidity and convenient operation, and is suitable for welding and processing of large steel components. It can not only be used for plane welding, but also for three-dimensional welding. The gantry welding equipment can be customized according to needs to adapt to different welding and processing requirements.

[0003] The prior art also proposes some solutions: such as a patent with publication number CN114571159A discloses a gantry automatic welding device, relating to the technical field of welding device. The technical solution points are: including two parallel guide rails and a gantry welding robot, the gantry welding robot includes a gantry frame and a welding machine, the gantry frame includes two vertical columns slidingly connected to the guide rails, and a cross beam is fixedly connected between the two vertical columns. By moving the bottom rod, each element is in the corresponding welding position. By positioning assembly, the element is positioned. Then, through the fixing piece, the bottom rod is fixed, so as to ensure the stability of the element during welding, and ensure the welding precision and efficiency.

[0004] When the gantry welding device welds the steel pipe, the steel pipe needs to be loaded to the predetermined position for welding before welding, and the steel pipe needs to be taken out from the welding position after welding. The existing device cannot continuously feed, which is difficult to meet the large-scale production demand, and the collection link after welding is low in efficiency, which prolongs the overall production cycle.

[0005] Therefore, the present application provides a gantry welding device. SUMMARY

[0006] In order to make up for the deficiencies of the prior art: solve at least one technical problem proposed in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the gantry welding device comprises a welding table, a gantry frame fixedly installed on the top of the welding table, a hydraulic cylinder fixedly installed on the top of the gantry frame, a control box fixedly connected to the output end of the hydraulic cylinder, a welding head fixedly connected to the bottom of the control box, a fixed frame fixedly connected to the top of the welding table, a rotating rod one rotatably connected to the inner wall of the fixed frame, a placing rack fixedly connected to the outer wall of the rotating rod one, and two placing racks respectively used for placing two welding steel pipes on the inner wall surface of the placing rack. A turnover assembly is arranged above the placing rack, which is used to drive the placing rack to turn towards both sides respectively. An feeding assembly is arranged on one side of the placing rack, which makes two welding steel pipes fall onto the inner wall surface of the two placing racks respectively each time.

[0008] Preferably, the top of the welding table is symmetrically fixedly provided with a feeding plate, the feeding plate is located above one side of the placing rack, the top of the welding table is fixedly connected with a supporting table, the top of the supporting table is provided with a discharging plate, the feeding plate and the discharging plate are in an inclined state, the discharging plate is located below the other side of the placing rack, the placing rack is in a V shape and is connected with a straight plate at one end close to the feeding plate.

[0009] Preferably, the turnover assembly comprises two connecting frames, the two connecting frames are fixedly connected to the top of the control box, the bottom of each connecting frame is fixedly connected with a Z-shaped plate, the inner wall of the fixed frame is rotatably connected with a rotating rod two, the outer wall of the rotating rod two is fixedly connected with an expanding plate, the two expanding plates are located directly below the two Z-shaped plates, and a transmission assembly is arranged between the rotating rod two and the rotating rod one.

[0010] Preferably, one side of each expanding plate is provided with a C-shaped plate, the C-shaped plate is fixedly connected to one side of the gantry, the top surface and the bottom surface of the expanding plate are fixedly connected with a torsion spring, one end of the torsion spring away from the expanding plate is fixedly connected to one side of the C-shaped plate, the inside of the torsion spring is provided with a damping rod, and the two ends of the damping rod are fixedly connected with the expanding plate and the C-shaped plate.

[0011] Preferably, the transmission assembly comprises a plurality of transmission rings, the plurality of transmission rings are fixedly connected to one end of the rotating rod two and the rotating rod one, and a transmission belt is transmissionally connected between the outer walls of every two adjacent transmission rings.

[0012] Preferably, the welding steel pipes are placed on the inclined surfaces of the feeding plates, the feeding assembly comprises two rotating shafts, the outer walls of the two rotating shafts are fixedly connected with X-shaped connecting plates, the sizes of the two opening inner walls of the X-shaped connecting plates are just suitable for the sizes of the steel pipes, one side of the Z-shaped plate is provided with a linkage assembly, and the linkage assembly is used to drive the rotating shafts to rotate.

[0013] Preferably, the other two opening ends of the X-shaped connecting plates are fixedly connected with arc-shaped connecting plates, the top of the feeding plate is symmetrically provided with fixing pieces, and a plurality of limiting rods are fixedly connected between the two fixing pieces.

[0014] Preferably, the linkage assembly comprises a telescopic rod, one end of the telescopic rod is fixedly connected between the two Z-shaped plates, the other end of the telescopic rod is fixedly connected with a rack plate, the teeth of the rack plate can mesh with a gear, the number of the teeth of the rack plate is one half of the number of the teeth of the gear, the two rotating shafts are connected together, and the gear is fixedly connected to the outer wall of the rotating shaft.

[0015] Preferably, the top of the feeding plate is symmetrically and fixedly connected with a protective plate, the rotating shaft is rotatably connected between the protective plate, the top of the feeding plate is fixedly connected with two limiting plates, the two limiting plates are in parallel relationship, the protective plate and the side surface of the limiting plate are provided with smooth surfaces, and the two fixing members are respectively fixedly connected to the top of the two limiting plates.

[0016] Preferably, the top of the welding table is provided with a collecting box, and the collecting box is located below the bottom of the discharging plate.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The gantry welding device can realize precise docking with the feeding assembly by accurately controlling the turning angle and direction of the placing rack, ensure that the steel pipe can accurately fall onto the placing rack, and after welding is completed, the welded steel pipe can smoothly slide and collect under the action of gravity, thereby improving the efficiency of the feeding and collecting links in the whole welding process.

[0019] 2. The gantry welding device can realize continuous and stable feeding of the feeding assembly, ensure that the welding work can be continuously carried out, and accurately control that only one steel pipe will fall onto the position of the placing rack each time, thereby improving the accuracy and stability of feeding.

[0020] 3. The gantry welding device can make the welded ends of the two steel pipes gradually close to each other during the process that the steel pipe is fed along the inclined surface of the feeding plate and slides into the inside of the placing rack, thereby avoiding the need for a worker or an additional driving assembly to make the welded ends of the two steel pipes closely close to each other after the feeding of the steel pipe is completed.

[0021] 4. The gantry welding device can drive the rotating shaft to rotate through the linkage assembly, and after the rotating shaft rotates, the X-shaped connecting plate is driven to rotate, the X-shaped connecting plate drives the steel pipe inside the opening to rotate when rotating, and after the rotating, the steel pipe slides out of the outlet of the X-shaped connecting plate and slides along the inclined surface of the feeding plate to the inside of the placing rack. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in conjunction with the drawings.

[0023] Figure 1 is the overall perspective view of the present application;

[0024] Figure 2 is a structure schematic view of the welding head in the present application;

[0025] Figure 3 is a structure schematic view of the placing rack in the present application;

[0026] Figure 4 is the structure schematic view of the flared plate in the application;

[0027] Figure 5 is the structure schematic view of the rack plate in the application;

[0028] Figure 6 is the structure schematic view of the limiting plate in the application;

[0029] Figure 7 is the structure schematic view of the X-shaped connecting plate in the application;

[0030] Figure 8 is the structure schematic view of the feeding plate in the application;

[0031] Figure 9 is the structure schematic view of the discharging plate in the application.

[0032] In the figure: 1, welding table; 2, gantry; 3, hydraulic cylinder; 4, control box; 5, welding head; 6, placing rack; 7, rotating rod one; 8, fixed frame; 9, transmission ring; 10, transmission belt; 11, rotating rod two; 12, connecting frame; 13, Z-shaped plate; 14, flared plate; 15, torsional spring; 16, damping rod; 17, C-shaped plate; 18, feeding plate; 19, arc-shaped connecting plate; 20, protective plate; 21, rotating shaft; 22, X-shaped connecting plate; 23, fixing piece; 24, limiting rod; 25, limiting plate; 26, telescopic rod; 27, rack plate; 28, gear; 29, discharging plate; 30, supporting table; 31, collection box. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, purposes and effects realized by the application easy to understand, the application is further described below in combination with specific embodiments.

[0034] As shown in Figures 1 to 9 , the application provides a technical solution: a gantry welding device, comprising a welding table 1, a gantry 2 fixedly installed on the top of the welding table 1, a hydraulic cylinder 3 fixedly installed on the top of the gantry 2, a control box 4 fixedly connected to the output end of the hydraulic cylinder 3, a welding head 5 fixedly connected to the bottom of the control box 4, a fixed frame 8 fixedly connected to the top of the welding table 1, rotating rods one 7 rotatably connected to the inner walls of the fixed frame 8, placing racks 6 fixedly connected to the outer walls of the rotating rods one 7, the inner wall surfaces of the two placing racks 6 respectively used for placing two welding steel pipes, a turnover assembly provided above each of the placing racks 6, the turnover assembly used for driving the placing rack 6 to be able to turn over towards two sides respectively, and a feeding assembly provided on one side of the placing rack 6, the feeding assembly making only two welding steel pipes respectively fall onto the inner wall surfaces of the two placing racks 6 each time.

[0035] When working: in the initial state, the openings of the two placing racks 6 are both directed upward, and the inner walls are not placed with steel pipes, the hydraulic cylinder 3 is started, the output end drives the control box 4 and the welding head 5 to descend, the control box 4 is responsible for coordinating the movement and parameter adjustment of the welding head 5, in the process of descending of the control box 4 and the welding head 5, the rotating rod one 7 is driven to rotate by the turnover assembly, the rotation of the rotating rod one 7 makes the placing rack 6 overturn 60 degrees with the rotating rod one 7 as the axis point, at this time, the openings of the placing rack 6 change from being directed upward to being directed obliquely upward, and form a butt joint relationship with the outlet of the feeding assembly;

[0036] At the same time of descending of the welding head 5, the feeding assembly is synchronized to act, so that the two steel pipes to be welded together fall onto the inner walls of the two placing racks 6 respectively, after the steel pipes fall onto the inner walls of the placing racks 6, the welding head 5 continues to descend, at this time, the two rotating rod one 7 are reversely rotated to reset under the action of the turnover assembly, so that the two placing racks 6 are reversely overturned by 60 degrees, and the openings are directed upward again, so that the steel pipes reach the predetermined welding position, the welding head 5 welds the welding lines of the two steel pipes, when the welding head 5 contacts the welding points of the two steel pipes, the control box 4 controls the welding head 5 to start the welding task;

[0037] After welding, the driving hydraulic cylinder 3 drives the control box 4 and the welding head 5 to ascend, in the process of ascending, the placing rack 6 is overturned by 60 degrees again by the turnover assembly, and the direction of this time overturning is opposite to that of the first time, the openings of the placing rack 6 are directed obliquely downward, and the welded steel pipes slide along the inner walls of the placing racks 6 under the action of gravity, so that the collection of the welded steel pipes is completed, when the welding head 5 ascends to the initial position, the two placing racks 6 are reversely overturned to reset again under the action of the turnover assembly, so as to perform the next round of welding task.

[0038] Through the above embodiment, by accurately controlling the overturning angle and direction of the placing rack 6, the accurate butt joint with the feeding assembly is realized, the steel pipes can be accurately dropped onto the placing rack 6, and after welding, the welded steel pipes can also be smoothly collected under the action of gravity, the efficiency of the feeding and collecting links in the whole welding process is improved, the feeding assembly can realize continuous and stable feeding, the welding work can be continuously performed, and the accuracy and stability of feeding are improved.

[0039] As Figure 3 , Figure 8 and Figure 9As shown, the top of the welding table 1 is symmetrically fixedly installed with an upper feeding plate 18, the upper feeding plate 18 is above one side of the placing rack 6 respectively, the top of the welding table 1 is fixedly connected with a supporting table 30, the top of the supporting table 30 is provided with a lower feeding plate 29, the upper feeding plate 18 and the lower feeding plate 29 are in an inclined state, the lower feeding plate 29 is below the other side of the placing rack 6, the placing rack 6 is in a V shape and is connected with a straight plate at one end close to the upper feeding plate 18.

[0040] When the welding head 5 is lowered, the placing rack 6 is first flipped, after the placing rack 6 is flipped by 60 degrees, the straight plate at one end can just form a butt joint relationship with the bottom outlet of the upper feeding plate 18, and the upper feeding assembly will make the two steel pipes slide along the inclined surface of the upper feeding plate 18 in this process, the two steel pipes will just fall into the inner wall surface of the placing rack 6, so as to realize the feeding process, the straight plate facilitates the accurate butt joint of the placing rack 6 and the upper feeding plate 18, and when the placing rack 6 is flipped back to reset in the reverse direction, the steel pipe will not fall out of the inside of the placing rack 6; after the welding work is completed, the placing rack 6 is flipped by 60 degrees in the opposite direction of the first time, the other end of the placing rack 6 is butt jointed with the top inlet of the lower feeding plate 29, the steel pipe naturally falls out under the action of gravity for collection.

[0041] As shown in the figure, Figures 2 to 4 The flipping assembly includes two connecting racks 12, the two connecting racks 12 are fixedly connected to the top of the control box 4 respectively, the bottom of the connecting rack 12 is fixedly connected with a Z-shaped plate 13, the inner wall of the fixed rack 8 is rotatably connected with a rotating rod two 11, the outer wall of the rotating rod two 11 is fixedly connected with an expanded plate 14, the two expanded plates 14 are located directly below the two Z-shaped plates 13 respectively, and a transmission assembly is arranged between the rotating rod two 11 and the rotating rod one 7.

[0042] When the control box 4 and the welding head 5 are lowered by the hydraulic cylinder 3, the Z-shaped plate 13 is lowered by the connecting frame 12, and the bottom surface of one side of the Z-shaped plate 13 contacts the top surface of the flared plate 14. During the continuous lowering process, the bottom surface of the Z-shaped plate 13 presses the top surface of the flared plate 14, so that the flared plate 14 rotates around the rotating shaft two 11 as the pivot point. The continuous lowering of the Z-shaped plate 13 causes the flared plate 14 to continuously rotate. When the Z-shaped plate 13 is lowered to a certain position, the flared plate 14 rotates in an overall arc-shaped angle, and the bottom surface of the Z-shaped plate 13 gradually separates from the top surface of the flared plate 14. At this time, the angle of rotation of the Z-shaped plate 13 is exactly 60 degrees, and the rotating shaft two 11 rotates 60 degrees. The rotating shaft two 11 drives the rotating shaft one 7 to rotate 60 degrees through the transmission assembly, so that the placing rack 6 is flipped 60 degrees for the first time and is connected with the feeding plate 18 for docking work. Similarly, when the Z-shaped plate 13 is raised and reset, the top surface of one side contacts the bottom surface of the flared plate 14, and the flared plate 14 is lifted and rotated in the opposite direction, so that the placing rack 6 is flipped 60 degrees in the opposite direction and is connected with the top inlet of the discharging plate 29 for docking, facilitating the collection of the welded steel pipe.

[0043] As shown in Figures 3 to 4 one side of the flared plate 14 is provided with a C-shaped plate 17, which is fixedly connected to one side of the gantry 2. The top surface and the bottom surface of the flared plate 14 are both fixedly connected with torsion springs 15. One end of the torsion spring 15 away from the flared plate 14 is fixedly connected with one side of the C-shaped plate 17. The inside of the torsion spring 15 is provided with a damping rod 16, and the two ends of the damping rod 16 are fixedly connected with the flared plate 14 and the C-shaped plate 17 respectively.

[0044] When the Z-shaped plate 13 is lowered, the flared plate 14 is pressed and stretched during the first flipping process of the placing rack 6. When the Z-shaped plate 13 is lowered to a position where the flared plate 14 is about to separate from the contact relationship, the hydraulic cylinder 3 controls the Z-shaped plate 13 to stop moving, waits for a period of time, and makes the steel pipe smoothly fall into the inside of the placing rack 6 along the inclined surface of the feeding plate 18. After the Z-shaped plate 13 continues to descend and separates from the flared plate 14, the flared plate 14 reversely rotates and resets under the elastic action of the two torsion springs 15, so that the placing rack 6 reversely flips and resets after receiving the steel pipe, and the steel pipe reaches the predetermined welding position. Similarly, when the Z-shaped plate 13 is raised after the welding is completed, the Z-shaped plate 13 lifts the flared plate 14 to reversely rotate, so that the placing rack 6 performs the second flipping process. After the placing rack 6 is connected with the top inlet of the discharging plate 29, it still waits for a period of time. After the steel pipe falls from the inside of the placing rack 6 to the discharging plate 29, the hydraulic cylinder 3 continues to rise. Under the action of the torsion spring 15, the flared plate 14 reversely rotates and resets for the second time, so that the placing rack 6 performs the reverse resetting movement after the second flipping.

[0045] As Figures 2 to 3 shown, the transmission assembly includes a plurality of transmission rings 9, which are respectively fixedly connected to one end of the rotating rod two 11 and the rotating rod one 7. The outer walls of every two adjacent transmission rings 9 are in transmission connection with a transmission belt 10.

[0046] When working: when the flared plate 14 rotates, it will drive the rotating rod two 11 to rotate. When the rotating rod two 11 rotates, it will drive the rotating rod one 7 to rotate through the transmission relationship of the transmission ring 9 and the transmission belt 10. The rotation of the rotating rod one 7 will drive the placement rack 6 to complete the overturning movement.

[0047] As Figures 6 to 8 shown, the welded steel pipes are respectively placed on the inclined surface of the feeding plate 18. The feeding assembly includes two rotating shafts 21, the outer walls of which are fixedly connected with X-shaped connecting plates 22. The sizes of the inner walls of the two openings of the X-shaped connecting plates 22 are just suitable for the sizes of the steel pipes. One side of the Z-shaped plate 13 is provided with a linkage assembly, which is used to drive the rotating shaft 21 to rotate.

[0048] When working: a plurality of steel pipes to be welded are respectively placed on the top surface of the two feeding plates 18. Since the X-shaped connecting plate 22 has four opening ends, the sizes of the inner walls of two of the openings of the X-shaped connecting plate 22 are just suitable for the sizes of the steel pipes. After a plurality of steel pipes are placed above the feeding plate 18 in the initial state, the first steel pipe will naturally fall into the opening end with a size suitable for it. When the Z-shaped plate 13 descends, it will drive the rotating shaft 21 to rotate 180 degrees through the linkage assembly. After the rotating shaft 21 rotates 180 degrees, it will drive the X-shaped connecting plate 22 to rotate. When the X-shaped connecting plate 22 rotates, it will drive the steel pipe inside the opening to overturn and rotate. After rotating 180 degrees, the steel pipe will fall out of the outlet of the X-shaped connecting plate 22 and slide down the inclined surface of the feeding plate 18 to the inside of the placement rack 6.

[0049] As Figures 6 to 8 shown, the other two opening ends of the X-shaped connecting plate 22 are fixedly connected with arc-shaped connecting plates 19. The upper part of the feeding plate 18 is symmetrically provided with fixed parts 23, and a plurality of limiting rods 24 are fixedly connected between the two fixed parts 23.

[0050] When working: after the steel pipe enters the opening end which is suitable for its size, the arc-shaped connecting plate 19 will hinder the remaining steel pipe from entering the other two opening ends of the X-shaped connecting plate 22, until the X-shaped connecting plate 22 rotates 180 degrees, the other opening end which is suitable for the steel pipe will be just rotated to the steel pipe, the next steel pipe will enter the opening end, and the next round of welding work is prepared, and the opening end into which the steel pipe enters is limited by the fixed part 23 and the limiting rod 24, so as to avoid the steel pipe from sliding out of the opening end of the X-shaped connecting plate 22 before the X-shaped connecting plate 22 rotates 180 degrees.

[0051] As shown in Figures 4 to 5 The linkage assembly includes a telescopic rod 26, one end of the telescopic rod 26 is fixedly connected between the two Z-shaped plates 13, the other end of the telescopic rod 26 is fixedly connected with a rack plate 27, the teeth of the rack plate 27 can engage with a gear 28, the number of the teeth of the rack plate 27 is half of the number of the teeth of the gear 28, the two rotating shafts 21 are connected together, and the gear 28 is fixedly connected to the outer wall of the rotating shaft 21.

[0052] When working: when the welding head 5 drives the Z-shaped plate 13 to descend, the telescopic rod 26 also drives the rack plate 27 to descend, at this time, the teeth of the rack plate 27 can engage with the teeth of the gear 28, and since the number of the teeth of the rack plate 27 is half of the number of the teeth of the gear 28, the rack plate 27 drives the gear 28 to rotate 180 degrees, so that the X-shaped connecting plate 22 rotates 180 degrees, and the steel pipe can slide along the inclined surface of the feeding plate 18 to the inside of the placing frame 6; when the Z-shaped plate 13 rises to reset after welding, at this time, the telescopic rod 26 is controlled to contract, so that the rack plate 27 does not engage with the teeth of the gear 28 when it rises, so that the X-shaped connecting plate 22 continues to rotate the feeding plate 18 each time the rack plate 27 descends, and the X-shaped connecting plate 22 does not rotate the feeding plate 18 when the rack plate 27 rises to reset.

[0053] As shown in Figures 5 to 6 The top of the feeding plate 18 is fixedly connected with the protective plate 20 in a symmetrical manner, the upper side of the feeding plate 18 is fixedly connected with two limiting plates 25, the rotating shaft 21 is rotatably connected between the protective plate 20, the two limiting plates 25 are in parallel relationship, the protective plate 20 and the side surface of the limiting plate 25 are provided with smooth surfaces, and the two fixed parts 23 are fixedly connected to the upper side of the two limiting plates 25.

[0054] When working: through the set of protective plate 20, the two ends of the steel pipe are limited, so that the steel pipe falls in advance to the opening end of the X-shaped connecting plate 22, and the position does not deviate, and through the setting of the fixing piece 23, the two steel pipes welded one end can gradually approach together during the sliding of the steel pipe feeding along the slope of the feeding plate 18 to the inside of the placing rack 6, so that the steel pipe after feeding does not need to be worked by the staff or additional driving assembly to make the two steel pipes welded one end close together, and the side of the protective plate 20 and the limiting plate 25 is provided with a smooth surface, so that the steel pipe does not appear the phenomenon of material clamping during the sliding on the feeding plate 18 to the inside of the placing rack 6.

[0055] As shown in Figure 1 The top of the welding table 1 is provided with a collecting box 31, and the collecting box 31 is located below the bottom of the discharging plate 29.

[0056] When working: when two steel pipes are welded together and slide along the slope of the discharging plate 29, they will finally fall from the bottom of the discharging plate 29 to the inside of the collecting box 31 for collection.

[0057] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A gantry welding device, comprising a welding table, characterized in that: A gantry frame is fixedly installed on the top of the welding table, and a hydraulic cylinder is fixedly installed on the top of the gantry frame. A control box is fixedly connected to the output end of the hydraulic cylinder, and a welding head is fixedly connected to the bottom of the control box. Fixed frames are symmetrically fixedly connected to the top of the welding table. Rotating rods are rotatably connected to the inner walls of the fixed frames, and placement frames are fixedly connected to the outer walls of the rotating rods. The inner walls of the two placement frames are used to place two welding steel pipes respectively. A flipping component is set above the placement frame. The flipping component is used to drive the placement frame to flip to both sides respectively. A feeding component is set on one side of the placement frame. The feeding component ensures that only two welding steel pipes fall onto the inner walls of the two placement frames at a time. The flipping assembly includes two connecting frames, which are fixedly connected to the top of the control box. Z-shaped plates are fixedly connected to the bottom of each connecting frame. Rotating rods two are rotatably connected to the inner wall of each fixed frame. Flared plates are fixedly connected to the outer wall of each rotating rod. The two flared plates are located directly below the two Z-shaped plates. When the Z-shaped plates descend to a certain position, the bottom surface of the Z-shaped plates will gradually separate from the top surface of the flared plates. A transmission assembly is provided between rotating rods two and rotating rod one. A C-shaped plate is provided on one side of the flared plate. The C-shaped plate is fixedly connected to one side of the gantry frame. Torsion springs are fixedly connected to the top and bottom surfaces of the flared plate. The end of the torsion spring away from the flared plate is fixedly connected to one side of the C-shaped plate. A damping rod is provided inside the torsion spring. The two ends of the damping rod are fixedly connected to the flared plate and the C-shaped plate respectively.

2. The gantry welding device according to claim 1, characterized in that: The top of the welding table is symmetrically fixed with a feeding plate, which is located above one side of the placement frame. The top of the welding table is fixedly connected to a support platform, and the top of the support platform is equipped with a feeding plate. Both the feeding plate and the feeding plate are inclined. The feeding plate is located below the other side of the placement frame. The placement frame is V-shaped and a straight plate is connected to the end near the feeding plate.

3. The gantry welding device according to claim 2, characterized in that: The transmission assembly includes multiple transmission rings, which are fixedly connected to one end of rotating rod two and rotating rod one, respectively. A transmission belt is connected between the outer walls of every two adjacent transmission rings.

4. The gantry welding device according to claim 3, characterized in that: Welded steel pipes are placed on the inclined surface of the feeding plate. The feeding assembly includes two rotating shafts. X-shaped connecting plates are fixedly connected to the outer walls of the two rotating shafts. The inner wall size of the two openings of the X-shaped connecting plates is just right to match the size of the steel pipes. A linkage component is set on one side of the Z-shaped plate. The linkage component is used to drive the rotating shafts to rotate.

5. A gantry welding device according to claim 4, characterized in that: An arc-shaped connecting plate is fixedly connected between the other two open ends of the X-shaped connecting plate. Fixing components are symmetrically arranged above the feeding plate, and several limiting rods are fixedly connected between the two fixing components.

6. A gantry welding device according to claim 5, characterized in that: The linkage assembly includes a telescopic rod, one end of which is fixedly connected between two Z-shaped plates, and the other end of which is fixedly connected to a rack plate. The teeth of the rack plate can mesh with a gear, and the number of teeth on the rack plate is half the number of teeth on the gear. Two rotating shafts are connected together, and the gear is fixedly connected to the outer wall of the rotating shaft.

7. A gantry welding device according to claim 6, characterized in that: A protective plate is symmetrically fixedly connected to the top of the feeding plate. The rotating shaft is rotatably connected to the protective plate. Two limiting plates are fixedly connected above the feeding plate. The two limiting plates are parallel to each other. The sides of the protective plate and the limiting plates are provided with smooth surfaces. Two fasteners are fixedly connected to the top of the two limiting plates respectively.

8. A gantry welding device according to claim 7, characterized in that: A collection box is installed on the top of the welding station, and the collection box is located below the bottom of the unloading plate.

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