An automatic welding system for iron tower

Abstract

The invention discloses an automatic welding system for iron towers, mainly relating to the field of welding technology. It comprises a conveying roller, a material trough is provided at one end of the conveying roller, a feeding port for exposing a bottom plate is provided at one end of the material trough close to the conveying roller, a welding station is provided between the feeding port and one end of the conveying roller, a long strip positioning frame and a first ball rack with positioning balls are provided above the conveying roller, a slide plate that is close to or away from the conveying roller is provided on one side of the conveying roller, a connecting frame with a lifting stroke is carried on the slide plate, two swing arms driven by a motor are provided at the bottom end of the connecting frame, support plates that can be relatively close or separated are provided at the ends of the two swing arms, a second ball rack with adaptive balls is fixed on the front end surface of the support plate away from the swing arm, and the positioning balls and adaptive balls are respectively used to contact the two sides of the web of the I-beam. The beneficial effects of the invention are that the welding of the iron tower can be automated, and the quality and efficiency are significantly improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to an automatic welding system for an iron tower. Background Art

[0002] The electrification of railways is the ultimate goal of China's railway development. The construction of high-speed railways is inseparable from the contact network. During the construction of the electrified railway contact network, a large number of iron towers are needed as basic supports. Most of the current high-speed railway towers use steel structure pillar structures, that is, H steel as the main part, and the base is welded at the bottom. The base is fixed or buried along the rails to form the basic support structure of the contact network.

[0003] Since the use of iron towers is very huge, the production capacity, quality and cost of their production and processing are very critical to railway construction. The existing processing method is to cut the steel to a fixed length and process the end face, and then weld the base (iron plate) at the bottom. The processing method is relatively simple, but due to the heavy weight of H-steel and its H-shaped cross-section, it is difficult to realize automated feeding and processing. It can only be manually hoisted to the work station one by one, and then manually welded. The processing efficiency is difficult to improve, the labor cost is also high, and based on manual operation, the positioning accuracy of the base iron plate is not high, and additional positioning correction is required during construction. Summary of the invention

[0004] The purpose of the present invention is to provide an iron tower automated welding system, which can realize automation of iron tower welding and significantly improve quality and efficiency.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] An automated iron tower welding system comprises a conveying roller, one end of the conveying roller is provided with a material trough, an upright bottom plate is placed in the material trough, an end of the material trough close to the conveying roller is provided with a feeding port for exposing the bottom plate, a welding station is provided between the feeding port and one end of the conveying roller, a welding gun is installed at the welding station, a positioning push plate is provided at one end of the conveying roller away from the welding station, the positioning push plate has a linear reciprocating positioning pushing stroke along the length direction of the conveying roller, a long strip positioning frame extending in the same direction as the length direction of the conveying roller is provided above the conveying roller, a first ball rack is fixedly installed on the positioning frame, and the first ball rack A plurality of freely rolling positioning balls are arranged on the conveying roller, a slide plate which is closer to or farther away from the conveying roller relative to its width direction is arranged on one side of the conveying roller, a connecting frame with a lifting stroke is mounted on the slide plate, a swing arm which is rotated by a motor is arranged at the bottom end of the connecting frame, the swing arms are two and are synchronously linked, and the ends of the two swing arms are respectively provided with support plates which can be relatively brought closer or separated, and the front end surface of the support plate away from the swing arm is a contact surface, a second ball rack is fixed on the contact surface, a plurality of adaptable balls are rotatably mounted on the second ball rack, and the positioning balls and adaptable balls are respectively used to contact the two sides of the web of the I-beam.

[0007] A stacking platform parallel to the conveying roller is provided on one side of the conveying roller, and two parallel ground rails are provided between the stacking platform and the conveying roller, the length direction of the ground rail is perpendicular to the conveying roller, one end of the ground rail is close to the stacking platform, and the other end of the ground rail is located below the conveying roller, and two connecting shafts are installed in parallel below the slide plate, and the two ends of the connecting shafts are rotatably installed on the slide plate through bearings, and the connecting shafts are vertically arranged above the two ground rails, and the two ends of the connecting shafts are fixedly installed with track wheels respectively, and the track wheels cooperate with the track crowns of the ground rails, and a traveling motor is fixedly installed on the slide plate, and an upper sprocket is installed on the output shaft of the traveling motor, and a lower sprocket is coaxially fixed to the outer sides of adjacent track wheels, and a chain is wound between the upper sprocket and the lower sprocket.

[0008] A strip plate is provided on the side of the slide plate close to the stacking platform, one end of the slide plate is hinged to one end of the strip plate, and an adaptable cylinder is rotatably installed on the other end of the slide plate, and an adaptable cylinder rod is provided at the end of the adaptable cylinder close to the stacking platform for telescopic cooperation therewith, the end of the adaptable lever is hinged to the other end of the strip plate, and when half of the adaptable lever extends out of the adaptable cylinder, the strip plate and the slide plate are horizontal, and lifting cylinders are symmetrically fixedly installed at both ends of the strip plate, the lifting cylinders are upright and a lifting rod is provided at the top thereof for telescopic cooperation therewith, and the top of the connecting frame is fixed on two telescopic rods.

[0009] A grabbing cylinder is fixed to the end of the swing arm away from the swing shaft, and a grabbing cylinder rod is provided at the upper end or the lower end of the grabbing cylinder for telescopic cooperation therewith, and the telescopic directions of the two grabbing cylinder rods are opposite. A fixing rod is fixed to the end of the grabbing cylinder rod, and the fixing rod extends vertically relative to the grabbing cylinder rod. The end of the fixing rod is at one end of the support plate away from the second ball rack, and a rubber gasket is provided on the side of the two support plates away from each other.

[0010] The conveying roller includes machine plates located on both sides, and a plurality of rollers arranged in parallel are rotatably installed between the machine plates. A positioning plate is fixed on the machine plate on the side away from the swing arm, and the positioning plate is arranged above one side of the conveying roller. The length direction of the positioning plate corresponds to the length direction of the conveying roller. Screws that penetrate the positioning plate are respectively fixed at both ends of the positioning frame, and nuts are matched on the screws.

[0011] The end of the conveying roller away from the welding station is provided with an end frame fixed relative to it, and the end frame is a door-shaped structure. A positioning screw and a positioning guide rail that are arranged in parallel with the conveying roller are passed through the end frame, and the positioning guide rail is matched with a positioning sleeve, and the positioning screw is matched with a positioning nut. The positioning sleeve and the positioning nut are installed on the end frame, and the inner ends of the positioning screw and the positioning guide rail are fixed on the positioning push plate, so that the positioning push plate has a positioning pushing stroke that is close to or away from the end frame, and the positioning push plate has a front stroke position and a rear stroke position. When the positioning push plate is in the rear stroke position, the positioning push plate is close to the end frame. When the positioning push plate is in the front stroke position, the distance between the positioning push plate and the feeding port corresponds to the length of the I-beam.

[0012] The material trough is a rectangular trough whose length direction is in the same direction as the conveying roller. The top of the material trough is an open structure. Baffle plates are provided on both sides of the feeding port near the bottom. The material trough is also provided with a feeding push plate with a reciprocating linear feeding stroke along its length direction. A feeding guide rail and a feeding screw are fixed on the feeding push plate. A feeding sleeve is matched on the feeding guide rail, and a feeding nut is matched on the feeding screw. The feeding nut and the feeding sleeve are installed on the trough wall at one end of the material trough away from the conveying roller.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The whole process of tower support processing is automated, and simple automatic positioning and automatic welding are achieved for heavier workpieces. Based on accurate positioning, the position and verticality can be guaranteed, thereby improving welding accuracy, greatly improving product quality, reducing manual dependence, and achieving a breakthrough in production capacity. The construction steps of the tower when in use are simplified, construction costs are reduced, and construction quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the present invention.

[0016] Figure 2 It is a schematic diagram of one end of the self-positioning push plate of the present invention.

[0017] Figure 3 It is an overall schematic diagram of the present invention.

[0018] Figure 4 It is a schematic diagram of the conveying roller and the material taking mechanism of the present invention.

[0019] Figure 5 It is a schematic diagram of the material taking mechanism of the present invention.

[0020] Figure 6 The material taking mechanism of the present invention is adaptable to the I-beam taking (adaptable to the inclination of the I-beam).

[0021] Figure 7 The material taking mechanism of the present invention is adaptable to the I-beam taking (adaptable to the inclination of the I-beam).

[0022] Figure 8 It is a schematic diagram of the present invention with a material unloading platform.

[0023] Numbers shown in the accompanying drawings:

[0024] 1. Stacking table; 2. Machine plate; 3. Roller; 4. Positioning plate; 5. Fixing plate; 6. Positioning frame; 7. Screw; 8. Positioning ball; 9. End frame; 10. Positioning push plate; 11. Material trough; 12. Feeding port; 13. Baffle plate; 14. Feeding push plate; 15. Ground rail; 16. Slide plate; 17. Connecting shaft; 18. Track wheel; 19. Lower sprocket; 20. Upper sprocket; 21. Strip plate; 22, lifting frame; 23, lifting shaft; 24, adapting cylinder; 25, adapting cylinder rod; 26, bushing; 27, vertical shaft; 28, lifting cylinder; 29, lifting rod; 30, connecting frame; 31, swing shaft; 32, swing arm; 33, connecting plate; 34, grabbing cylinder; 35, grabbing cylinder rod; 36, fixing rod; 37, support plate; 38, adapting ball; 39, unloading table. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0026] Embodiment: An automated welding system for a steel tower

[0027] In manual welding, due to the heavy pillars, H-steel can usually only be welded in a flat state, and the positioning accuracy of the base is not high. In addition, the pillars are large, and the welding occupies a lot of manpower and space, resulting in high costs in all aspects and low efficiency.

[0028] For the sake of convenience, the H-steel that has been processed and treated to a fixed length is called a support member or H-shaped steel, and the base iron plate is called a bottom plate member.

[0029] The system comprises a stacking platform 1 and a conveying roller arranged in parallel;

[0030] The conveying roller includes machine plates 2 located on both sides, and a plurality of rollers 3 arranged in parallel are rotatably installed between the machine plates 2. The rollers are unpowered rollers, which facilitate directional pushing when the supporting member falls on it.

[0031] The conveying roller is provided with a positioning plate 4 near the edge of one side thereof, the positioning plate 4 is vertically arranged and its height is higher than the height of the web of the supporting member, the length direction of the positioning plate 4 corresponds to the length direction of the conveying roller, and the two ends of the bottom side of the positioning plate 4 are respectively provided with fixing plates 5 fixedly connected to the machine plate 2 on the same side, and the positioning plate 4 is fixed to the machine plate 2 on one side of the conveying roller through the fixing plate 5, and a long strip-shaped positioning frame 6 is provided above the middle of the conveying roller, the positioning frame 6 extends horizontally and its length direction is consistent with the length direction of the conveying roller, and the two ends of the positioning frame 6 are respectively fixed with screws 7 that pass through the positioning plate 4, and the screw 7 is matched with a nut member, and the position of the screw 7 relative to the positioning plate 4 can be fixed and limited by the nut member, so as to facilitate the adjustment of the distance between the positioning frame 6 and the positioning plate 4, thereby adjusting the relative position of the positioning frame 6 above the conveying roller. The positioning frame 6 is fixedly mounted with a first long ball rack adapted thereto, the first ball rack comprising a plurality of positioning balls 8 extending along the length direction of the positioning frame 6, the positioning balls 8 being used to contact one side of the web of the H-shaped steel, thereby cooperating with the support member to keep it aligned with the conveying roller when the support member is pushed.

[0032] One end of the conveying roller is provided with an end frame 9 fixed on the machine plate 2. The end frame 9 is a gate-shaped structure and both ends are fixed on the machine plate 2 on the same side. A positioning screw and a positioning guide rail are passed through the end frame 9. The positioning guide rail is equipped with a positioning sleeve, and the positioning screw is equipped with a positioning nut. The positioning sleeve and the positioning nut are installed on the end frame 9, and the positioning nut is driven to rotate based on the motor installed on the end frame 9. The inner ends of the positioning screw and the positioning guide rail are fixed on the positioning push plate 10. Based on the above structure, the positioning push plate 10 has a reciprocating stroke that approaches or moves away from the end frame 9, which is a positioning pushing stroke, and the positioning pushing stroke is in the same direction as the length direction of the conveying roller, and can push the fixed-length support member forward to a fixed position.

[0033] Based on the positioning pushing stroke, the positioning push plate 10 has a front stroke position and a rear stroke position. When the positioning push plate 10 is in the rear stroke position, the positioning push plate 10 is close to the end frame 9 and is located at one end of the conveying roller, which is convenient for loading the conveying roller. When the positioning push plate 10 is pushed away from the end frame 9 and is in the front stroke position, the minimum distance between the positioning push plate 10 and the outermost bottom plate member corresponds to the length of the support member, so that the end of the support member away from the positioning push plate 10 contacts the outermost bottom plate member to achieve matching positioning before welding.

[0034] A feeding mechanism is provided at the other end of the conveying roller away from the end frame 9. The feeding mechanism includes a trough 11. The width of the trough 11 corresponds to the size of the bottom plate. The trough 11 is a rectangular trough with the same length direction as the conveying roller. The top of the trough 11 is an open structure. The trough 11 is used to place multiple bottom plate parts waiting for welding. A feeding port 12 is provided at one end of the trough 11 close to the conveying roller. Baffle plates 13 are provided near the bottom on both sides of the feeding port 12. The bottom plate parts are exposed through the feeding port 12, which is convenient for cooperating with the pillar parts and performing welding operations. At the same time, the baffle plates 13 at the bottom of both sides are used to assist in positioning the bottom plate parts located on the outermost side so that they are located on the processing station. The baffle plates 13 are at least half a meter away from the conveying roller. This distance is a welding station. An automatic welding gun head is installed at the welding station to complete the welding operation of the pillar parts and the bottom plate parts.

[0035] The material trough 11 is also provided with a feeding push plate 14 with a reciprocating linear feeding stroke along its length direction, and a feeding guide rail and a feeding screw are fixed on the feeding push plate 14, and the feeding guide rail is matched with a feeding sleeve, and the feeding screw is matched with a feeding nut. The feeding nut and the feeding sleeve are installed on the trough wall at one end of the material trough 11 away from the conveying roller, and the feeding nut is rotatably installed and rotated based on a motor drive, so that all the bottom plate parts upright placed in the material trough 11 can be pushed to the feeding port 12 by the feeding push plate 14, so as to realize continuous feeding and continuously replenish the bottom plate parts at the feeding port 12.

[0036] The driving structure for the positioning nut and the feeding nut can adopt various common rotation driving structures in the prior art, such as but not limited to: transmission between the nut and the motor shaft through gear transmission, belt transmission, etc.

[0037] The stacking platform 1 is arranged parallel to the conveying roller and is arranged on a side away from the positioning plate 4 .

[0038] The stacking platform 1 is as Figure 1As shown, it is a raised platform fixed on the workshop floor. Since it is difficult to control the positioning and lifting and lowering accuracy during the hoisting process, it is inevitable that bumps will occur during the material dropping process. If it is placed directly on the ground, the ground will soon be damaged. Therefore, a stacking platform 1 is installed in the material piling area. On the one hand, it is convenient to position and place the support steel, and to find the approximate direction and position when hoisting and dropping materials, so as to achieve visual management, and on the other hand, it protects the ground. The top of the stacking platform 1 is made of steel plate, and the top surface is a smooth metal surface.

[0039] A material taking mechanism for taking materials from supporting members and automatically loading materials is provided between the stacking platform 1 and the conveying roller. The material taking mechanism includes two parallel ground rails 15 provided between the stacking platform 1 and the conveying roller. The ground rails 15 are fixed on the ground. The length direction of the ground rails 15 is perpendicular to the conveying roller. One end of the ground rails 15 is close to the stacking platform 1, and the other end of the ground rails 15 is located below the conveying roller.

[0040] The material picking mechanism also includes a slide plate 16 with a feeding stroke, the slide plate 16 is long and strip-shaped, and two connecting shafts 17 are installed in parallel below the slide plate 16, and both ends of the connecting shaft 17 are rotatably installed on the slide plate 16 through bearing members, and both ends of the connecting shaft 17 are fixedly installed with track wheels 18, and the track wheels 18 cooperate with the rail crowns of the ground rails 15 to constrain and guide the slide plate 16 to move linearly along the extension direction of the ground rails 15. A walking motor is fixedly installed on the slide plate 16, and an upper sprocket wheel 20 is installed on the output shaft of the walking motor, and a lower sprocket wheel 19 is coaxially fixed to the outer side of the track wheel 18 of one of the adjacent walking motors, and a chain is wound between the upper sprocket wheel 20 and the lower sprocket wheel 19 to realize the driving of the connecting shaft 17, thereby realizing the driving of the slide plate 16 to travel. Based on the above structure, the slide plate 16 has a reciprocating linear feeding stroke between the stacking platform 1 and the conveying roller.

[0041] The side of the slide plate 16 close to the stacking platform 1 is provided with a strip plate 21, and the strip plate 21 is self-adaptive to the disordered placement of the pillars through a special installation structure with the slide plate 16. The specific structure is as follows:

[0042] A hanging frame 22 is fixed to one end of the slide plate 16, and the hanging frame 22 is arranged perpendicular to the length direction of the slide plate 16. A hanging shaft 23 is arranged at the end of the hanging frame 22 away from the slide plate 16, and the hanging shaft 23 is rotatably connected to one end of the strip plate 21;

[0043] An adaptable cylinder 24 is rotatably mounted on one end of the slide plate 16 away from the hanging frame 22. Specifically, a swing seat is provided at one end of the slide plate 16, and the bottom of the adaptable cylinder 24 is rotatably connected to the swing seat. An adaptable cylinder rod 25 that cooperates with the adaptable cylinder 24 telescopically is provided at one end of the adaptable cylinder 24 close to the stacking platform 1, and a shaft sleeve 26 is provided at the end of the adaptable cylinder rod 25. A vertical shaft 27 that penetrates the shaft sleeve 26 and is rotatably connected is provided at one end of the strip plate 21 away from the hanging frame 22.

[0044] When half of the adapting lever extends out of the adapting cylinder 24, the strip plate 21 and the slide plate 16 are in a parallel and horizontal state.

[0045] Based on the above structure, one end of the strip plate 21 is hinged to one end of the slide plate 16 and can swing freely, while the other end of the strip plate 21 swings with an adjustable distance from the other end of the slide plate 16 .

[0046] The two ends of the strip plate 21 are symmetrically fixed with lifting cylinders 28, which can be cylinders driven by air source power. The lifting cylinder 28 is arranged upright and has a lifting rod 29 at its top that is telescopically matched with it. A connecting frame 30 is fixed at the top of the lifting rod 29. The connecting frame 30 is a door-shaped structure extending downward from the top of the lifting rod 29. The bottom end of the connecting frame 30 is provided with a swing shaft 31, and a swing arm 32 is sleeved on the swing shaft 31 and connected to it for rotation. The two swing arms 32 are symmetrically arranged at the two ends of the swing shaft 31, and a connecting plate 33 is arranged between the two swing arms 32. The swinging motion of the two swing arms 32 is synchronized by the connecting plate 33 to form an integrated structure. The swing of the swing arm 32 is driven by a motor and has a swing stroke of 180, so that the swing arm 32 swings above the swing shaft 31, thereby respectively achieving the side close to the stacking platform 1 or the side close to the conveying roller.

[0047] A grabbing cylinder 34 is fixed to the end of the swing arm 32 away from the swing shaft 31, and a grabbing cylinder rod 35 is provided at the upper end or the lower end of the grabbing cylinder 34 to cooperate with it in telescopic manner, and a fixing rod 36 is fixed to the end of the grabbing cylinder rod 35, and the fixing rod 36 extends vertically relative to the grabbing cylinder rod 35, and a support plate 37 is fixed to the end of the fixing rod 36, and one side end face of the support plate 37 is covered with a rubber gasket with a texture on it. The gasket is made of rubber material, which can improve the reliability of grabbing.

[0048] The extension and retraction directions of the grabbing cylinder rods 35 on the two swing arms 32 are opposite to each other, so that the support plates 37 on the two swing arms 32 are relatively close to or far away from each other, and the gaskets on the two support plates 37 are arranged in opposite directions.

[0049] The front end surface of the support plate 37 away from the swing shaft 31 is a contact surface, and a second ball rack is fixed on the contact surface. A plurality of adaptive balls 38 are rotatably mounted on the second ball rack. The adaptive balls 38 are arranged relative to the length direction of the support plate 37.

[0050] Based on the above structure, through two oppositely arranged grabbing cylinders 34, the control structure can be concentrated and gathered within a range not exceeding the height of the I-beam, and through the extension and retraction of the opposite grabbing cylinder rods 35, the support plates 37 can be brought closer to and away from each other. When they are close to each other, the maximum distance between the gaskets of the two support plates 37 is significantly smaller than the spacing between the two wing plates of the I-beam, so that they can be easily inserted between the two wing plates. When the two support plates 37 move away from each other in opposite directions, they can be pressed against the inner sides of the two wing plates upward and downward, thereby achieving internal grabbing of the I-beam.

[0051] Based on the above structure, the actions that need to be performed by this device during the specific welding process are as follows:

[0052] Use hoisting to hoist the H-steel of the support member onto the stacking platform 1, so that the length direction of the support member is as consistent as possible with the length direction of the stacking platform 1, and the wing plate falls on the stacking platform 1.

[0053] The adapting lever is extended until half of it is outside the adapting cylinder 24, that is, the strip plate 21 is parallel to the slide plate 16;

[0054] The swing arm 32 is arranged near one side of the stacking plate, and the swing arm 32 is horizontal. The grabbing cylinder rod 35 is retracted to bring the two support plates 37 together, and the lifting rod 29 is adjusted to an appropriate height so that the two support plates 37 are located in the middle of the web of the target I-beam.

[0055] The slide plate 16 moves close to one side of the stacking plate, so that the two support plates 37 are inserted between the upper and lower wing plates of the target I-beam as the slide plate moves. When the I-beam is placed at a certain angle relative to the stacking table 1, the adaptive balls 38 on the contact surface of the front side of the support plate 37 cannot contact the web at the same time.

[0056] like Figure 6 As shown, when the adapting ball 38 near the side of the lifting shaft 23 first contacts the target I-beam web, the slide plate 16 stops, and the adapting cylinder rod 25 extends until the adapting ball 38 contacts the web;

[0057] like Figure 7 As shown, when the adapting ball 38 near the adapting cylinder 24 first contacts the target I-beam web, the adapting lever retracts into the adapting cylinder 24 while the slide plate 16 continues to move toward the stacking platform 1 until all the adapting balls 38 contact the web;

[0058] The grabbing cylinder rod 35 extends until the support plate 37 supports the inner side of the wing plate upward and downward;

[0059] The lifting rod 29 rises to a certain height (which can be set to 10 cm, the purpose is to make the I-beam leave the stacking platform 1), and the adapting lever is restored to half of its position outside the adapting cylinder 24, so that the strip plate 21 and the captured I-beam are parallel to the slide plate 16;

[0060] This step completes the adjustment and alignment of the I-beam;

[0061] The swing arm 32 swings 180 degrees toward the conveying roller until the swing arm 32 is parallel to and located on one side of the conveying roller;

[0062] The slide plate 16 moves toward the conveying roller, and the lifting rod 29 rises to place the grabbed I-beam on the conveying roller, and the web of the I-beam away from the side of the support plate 37 contacts the positioning ball 8. At this time, the I-beam is located on the conveying roller, and the two sides of the web are respectively in contact with the adaption ball 38 (on the support plate 37) and the positioning ball 8 (on the conveying roller); this step completes the positioning of the I-beam on the conveying roller;

[0063] The support plates 37 are relatively close to each other, and the contact between the adapting balls 38 and the web is maintained during the close process. At this time, the grip on the I-beam is released, but the positioning of the I-beam is still maintained;

[0064] The positioning push plate 10 is pushed toward the welding station until it reaches its front travel position. At this time, the front end of the I-beam is pushed to contact with the bottom plate of the feeding port 12, and the contact position is positioned and constrained with high precision;

[0065] Start the welding gun for automated welding;

[0066] After the welding operation is completed, the material unloading operation can be completed manually, and the material-retrieving mechanism repeats the above steps and proceeds to retrieve the material for the next welding link.

[0067] It is also possible to further set a feeding platform 39 on the side of the conveying roller away from the stacking platform 1, and one side of the feeding platform 39 is fixed above the positioning plate 4, so that the height of the feeding platform 39 is higher than the positioning plate 4. After welding is completed, the support plate 37 can be extended in the opposite direction to resume the grip of the I-beam, and rise upward to separate the bottom plate from the baffle plate 13. At the same time, the feeding push plate 14 pushes the distance of a bottom plate thickness toward the feeding port 12, and pushes the stored bottom plate to the feeding port 12. The slide plate 16 starts to continue to move toward the conveying roller, and the welded I-beam is placed on the feeding platform 39, which is convenient for the next step of processing.

[0068] Through the above structure and action, the automated operation of the positioning welding of the I-beam and the iron plate can be realized, and the following difficulties are overcome in this process:

[0069] For large-volume pillars (I-beams cut to length), there are difficulties in precision in both hoisting and loading. This system can automatically grab the stacked I-beams. Based on the above structure, firstly, the swing shaft 31 is installed at the bottom of the lifting stroke through the connecting frame 30, so that the I-beams stacked at a lower position can be grabbed as far as possible. Secondly, the support plate 37 that is staggered and opens and closes in the opposite direction can be used to tighten the I-beam wing plate inside without affecting the contact surface above and below. Thirdly, the lifting can adapt to the grabbing of I-beams of different heights. Even if the I-beams are prepared and stacked in advance, they can be grabbed from top to bottom in sequence. The stacking and processing can be completely independent, ensuring that the processing progress is not restricted and affected by the previous link. Thirdly, the stacked I-beams can only roughly maintain their direction but cannot achieve precise alignment. Through our special adaptive structure, mainly the adaptive swinging ability of the two ends of the strip plate 21, the adaptive ball 38 on the front side can be adjusted to be aligned with the target I-beam. After being grasped and fixed, the strip plate 21 is reset to achieve the correct positioning of the I-beam, so that it can be parallel to the conveying direction of the conveyor roller before loading, thereby ensuring that it is perpendicular to the bottom plate and has high welding quality. When the bottom plate is fixed, the verticality of the iron column can be guaranteed, thereby greatly improving the simplicity and convenience of construction and improving the quality of the iron tower.

[0070] By swinging the swing arm 32 on both sides of the stacking platform 1 and the conveying roller, the wing plate can be kept on the ground after the I-beam is turned over, thereby providing a suitable state for positioning the next step of feeding.

[0071] When loading the support member, after placing the support member on the conveyor roller, one side of the web is positioned by the positioning ball 8, and the other side of the web is positioned by the adaptive ball 38. The clamping on both sides allows the I-beam to remain vertical relative to the base plate and centered relative to the base plate during the pushing process, thereby ensuring the processing accuracy in subsequent welding.

[0072] Therefore, through our system, the whole process of tower support processing is automated, and the heavy workpieces can be simply automatically grasped, adjusted, loaded, positioned and fed, and welded. Based on accurate positioning, the position and verticality can be guaranteed, thereby improving welding accuracy, greatly improving product quality, reducing manual dependence, and achieving a breakthrough in production capacity. Simplify construction steps, reduce construction costs, and improve construction quality.

Claims

1. An automatic tower welding system, characterized in that: The invention comprises a conveying roller, wherein a material trough (11) is provided at one end of the conveying roller, a bottom plate member is placed in the material trough (11), a feeding port (12) for exposing the bottom plate member is provided at the end of the material trough (11) close to the conveying roller, a welding station is provided between the feeding port (12) and one end of the conveying roller, a welding gun is installed at the welding station, a positioning push plate (10) is provided at the end of the conveying roller away from the welding station, the positioning push plate (10) has a linear reciprocating positioning pushing stroke along the length direction of the conveying roller, a long strip positioning frame (6) extending in the same direction as the length direction of the conveying roller is provided above the conveying roller, a first ball rack is fixedly installed on the positioning frame (6), a plurality of freely rolling positioning balls (8) are provided on the first ball rack ), a slide plate (16) is provided on one side of the conveying roller so as to move closer to or farther from the conveying roller in its width direction, a connecting frame (30) having a lifting stroke is mounted on the slide plate (16), a swing arm (32) which is driven to rotate by a motor is provided at the bottom end of the connecting frame (30), the swing arms (32) are two and are synchronously linked, and the ends of the two swing arms (32) are respectively provided with support plates (37) which can move closer to or away from each other, and the front end surface of the support plate (37) away from the swing arm (32) is a contact surface, a second ball rack is fixed on the contact surface, and a plurality of adaptable balls (38) are rotatably mounted on the second ball rack, and the positioning balls (8) and the adaptable balls (38) are respectively used to contact the two sides of the web of the I-beam.

2. The automatic tower welding system according to claim 1, characterized in that: A stacking platform (1) is provided on one side of the conveying roller and arranged in parallel therewith. Two parallel ground rails (15) are provided between the stacking platform (1) and the conveying roller. The length direction of the ground rail (15) is perpendicular to the conveying roller. One end of the ground rail (15) is close to the stacking platform (1). The other end of the ground rail (15) is located below the conveying roller. Two connecting shafts (17) are installed in parallel below the slide plate (16). The two ends of the connecting shafts (17) are rotatably mounted on the slide plate (16) via bearings. ), the connecting shaft (17) is vertically arranged above the two ground rails (15), and track wheels (18) are fixedly installed at both ends of the connecting shaft (17), and the track wheels (18) cooperate with the rail crowns of the ground rails (15). A travel motor is fixedly installed on the slide plate (16), and an upper sprocket (20) is installed on the output shaft of the travel motor. A lower sprocket (19) is coaxially fixed on the outer side of the adjacent track wheels (18), and a chain is wound between the upper sprocket (20) and the lower sprocket (19).

3. The automatic tower welding system according to claim 1 is characterized in that: A strip plate (21) is provided on one side of the slide plate (16) close to the stacking platform (1), one end of the slide plate (16) is hinged to one end of the strip plate (21), and an adaptable cylinder (24) is rotatably installed on the other end of the slide plate (16). An adaptable cylinder rod (25) that is telescopically matched with the adaptable cylinder (24) is provided at one end of the adaptable cylinder (24) close to the stacking platform (1), and the end of the adaptable cylinder rod is hinged to the other end of the strip plate (21), and when half of the adaptable cylinder rod is extended out of the adaptable cylinder (24), the strip plate (21) and the slide plate (16) are horizontal, and lifting cylinders (28) are symmetrically fixedly installed at both ends of the strip plate (21), and the lifting cylinder (28) is upright and a lifting rod (29) that is telescopically matched with the lift cylinder (28) is provided at the top, and the top of the connecting frame (30) is fixed on the two telescopic rods.

4. The automatic tower welding system according to claim 1, characterized in that: A grabbing cylinder (34) is fixed to the end of the swing arm (32) away from the swing shaft (31); a grabbing cylinder rod (35) is provided at the upper end or the lower end of the grabbing cylinder (34) to cooperate with the grabbing cylinder rod (35) for extension and contraction; the two grabbing cylinder rods (35) extend and contract in opposite directions; a fixing rod (36) is fixed to the end of the grabbing cylinder rod (35); the fixing rod (36) extends vertically relative to the grabbing cylinder rod (35); the end of the fixing rod (36) is at one end of the support plate (37) away from the second ball rack; a rubber gasket is provided on the side of the two support plates (37) away from each other.

5. The automatic tower welding system according to claim 1 is characterized in that: The conveying roller comprises machine plates (2) located on both sides, a plurality of rollers (3) arranged in parallel are rotatably mounted between the machine plates (2), a positioning plate (4) is fixed on the machine plate (2) on the side away from the swing arm (32), the positioning plate (4) is arranged above one side of the conveying roller, the length direction of the positioning plate (4) corresponds to the length direction of the conveying roller, and screw rods (7) passing through the positioning plate (4) are respectively fixed at both ends of the positioning frame (6), and a nut member is matched on the screw rod (7).

6. The automatic tower welding system according to claim 1, characterized in that: An end frame (9) fixed relative to the conveying roller is provided at one end away from the welding station, the end frame (9) being a gate-shaped structure, the end frame (9) being penetrated by a positioning screw and a positioning guide rail arranged parallel to the conveying roller, the positioning guide rail being matched with a positioning sleeve, the positioning screw being matched with a positioning nut, the positioning sleeve and the positioning nut being mounted on the end frame (9), the inner ends of the positioning screw and the positioning guide rail being fixed on a positioning push plate (10), so that the positioning push plate (10) has a positioning push stroke that moves closer to or farther from the end frame (9), the positioning push plate (10) having a front stroke position and a rear stroke position, when the positioning push plate (10) is located at the rear stroke position, the positioning push plate (10) is close to the end frame (9), and when the positioning push plate (10) is located at the front stroke position, the distance between the positioning push plate (10) and the feeding port (12) corresponds to the length of the I-beam.

7. The automatic tower welding system according to claim 1, characterized in that: The material trough (11) is a rectangular trough whose length direction is in the same direction as the conveying roller. The top of the material trough (11) is an open structure. Baffle plates (13) are provided on both sides of the feeding port (12) near the bottom. The material trough (11) is also provided with a feeding push plate (14) having a reciprocating linear feeding stroke along its length direction. A feeding guide rail and a feeding screw are fixed on the feeding push plate (14). The feeding guide rail is equipped with a feeding sleeve. The feeding screw is equipped with a feeding nut. The feeding nut and the feeding sleeve are installed on the trough wall at one end of the material trough (11) away from the conveying roller.

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