Mast assembly line and mast manufacturing method

Abstract

The application discloses a mast assembling production line and a mast manufacturing method. The mast assembling production line comprises a conveying device and first and second device areas arranged on opposite sides of the conveying device, and the first and second device areas extend along the conveying direction of the conveying device. The mast assembling production line comprises a plurality of assembly welding devices, inner welding seam welding devices, outer welding seam welding devices and detection and correction devices, and the plurality of assembly welding devices, inner welding seam welding devices, outer welding seam welding devices and detection and correction devices are arranged in the first or second device area. The assembly welding devices are used for assembling and welding various parts of the mast, the inner welding seam welding devices are used for welding the inner welding seams of the mast, the outer welding seam welding devices are used for welding the outer welding seams of the mast, and the detection and correction devices are used for detecting and correcting the deformation of the mast. The mast assembling production line has high automation, improves the machining efficiency and quality consistency, reduces the labor and lowers the safety hidden danger.

Description

Technical Field

[0001] This invention relates to the technical field of mast processing, and in particular to a mast assembly production line and a mast manufacturing method. Background Technology

[0002] Currently, rotary drilling rigs are large-diameter, high-efficiency hole-forming equipment used in foundation construction. They utilize a drill rod that remains vertical to directly rotate and excavate the ground, thereby quickly forming pile holes of the required diameter and depth. The mast of the rotary drilling rig is a crucial working component. The mast angle is adjusted using a mast luffing mechanism, ensuring the drill rod and drill bit assembly reaches the correct pile location. The rotary drilling rig's power head assembly provides torque to the drill rod and drill bit assembly, and the pressurization device transmits pressure to the drill rod and drill bit via the pressurization power head.

[0003] The core load-bearing and guiding component of the rotary drilling rig mast is a large box-beam welded structure. The rotary drilling rig mast mainly consists of two parts: the mast slot and the guide rails on both sides of the mast slot. The mast slot is primarily composed of a front wall plate, a rear cover plate, side plates, and a top plate. The interior of the mast slot is reinforced with two layers of plates and partitions. The guide rails are typically welded to the front of the side plates. The rotary drilling rig mast can be divided into an upper mast, a middle mast, and a lower mast. The middle mast connects the upper mast and the lower mast. The top of the upper mast connects to the gooseneck, and the bottom wall of the lower mast connects to the power head assembly.

[0004] In existing technologies, mast manufacturing generally employs a decentralized operation, where marking, hoisting, assembly, and most welding work are done manually at various fixed workstations. This mast manufacturing method has the following problems: 1. Low level of automation and significant efficiency bottlenecks: Manual assembly and welding are slow, resulting in long production cycles and difficulty in meeting the demands of mass production. Overhead cranes have become the main logistics method, leading to long waiting times and low logistics efficiency.

[0005] 2. Poor quality consistency: Assembly accuracy depends on workers' experience and eyesight, and welding parameters are manually controlled by workers, resulting in large fluctuations in product dimensional accuracy and weld quality. The straightness and relative position of key components (such as guide rails) are difficult to guarantee.

[0006] 3. Insufficient flexible production capacity: The tooling is not versatile, and the adjustment time is long when switching product models, and sometimes tooling needs to be replaced. It is impossible to quickly respond to the market demand for multiple models and small batches.

[0007] 4. Significant safety and environmental hazards: Workers need to climb on large components, posing a risk of falling from heights; manual welding produces concentrated fumes, is physically demanding, and results in a harsh working environment. Summary of the Invention

[0008] In order to overcome the shortcomings and deficiencies of the prior art, the purpose of this invention is to provide a mast assembly production line and a mast manufacturing method to solve at least one technical problem in the prior art.

[0009] The objective of this invention is achieved through the following technical solution: This invention provides a mast assembly production line, including a transport device and a first equipment area and a second equipment area disposed on opposite sides of the transport device, wherein both the first equipment area and the second equipment area extend along the transport direction of the transport device; The mast assembly production line includes multiple welding equipment, internal weld welding equipment, external weld welding equipment, and inspection and correction equipment. Each of the multiple welding equipment, the internal weld welding equipment, the external weld welding equipment, and the inspection and correction equipment is located in the first equipment area or the second equipment area. The assembly and welding equipment is used for assembling and welding various components of the mast. The inner weld welding equipment is used for welding the welds on the inner side of the mast. The outer weld welding equipment is used for welding the welds on the outer side of the mast. The inspection and straightening equipment is used for inspecting the mast and correcting its deformation.

[0010] Furthermore, both the inner weld welding equipment and the outer weld welding equipment include a displacement clamping device, a support mechanism, and a ceiling rail welding device. The welding arm of the ceiling rail welding device is located above the support mechanism, the displacement clamping device is located on the support mechanism, the support mechanism is used to support the mast slot, the displacement clamping device is used to clamp the mast slot and change the placement angle of the mast slot, and the ceiling rail welding device is used to weld the weld seam of the mast slot.

[0011] Furthermore, the plurality of welding devices includes a first welding device, a second welding device, and a first tank welding device, wherein the first welding device, the second welding device, and the first tank welding device are located on the same side of the transport device and are arranged sequentially along the transport direction of the transport device; The first welding equipment is used for welding multiple side plates together; the second welding equipment is used for welding multiple guide rails together, multiple front wall plates together, and the guide rails and the side plates together; the first tank welding equipment is used for welding the front wall plate and the side plate together, the front wall plate and the side plate together with the end flange plate respectively, and the front wall plate and the side plate together with the partition plate respectively.

[0012] Furthermore, the first welding equipment includes a gantry manipulator, a first roller conveyor line, a side plate assembly fixture, and a side plate welding workstation. The gantry manipulator is located above the first roller conveyor line and is used to transfer the side plates to the first roller conveyor line. The first roller conveyor line is used to transport the side plates to the side plate assembly fixture for assembly and to transport the welded side plates to the second welding equipment. The side plate welding workstation is used to weld the assembled side plates together.

[0013] Furthermore, the second welding equipment includes a transverse movement mechanism, a second roller conveyor line, a guide rail assembly fixture, a front wall panel assembly fixture, a side panel guide rail assembly fixture, and a guide rail side panel spot welding workstation. The second roller conveyor line cooperates with the first roller conveyor line and receives material from the first roller conveyor line. The transverse movement mechanism is located above the second roller conveyor line, the front wall panel assembly fixture, and the side panel guide rail assembly fixture. The transverse movement mechanism is used to transfer the side panel to the side panel guide rail assembly fixture. The process involves assembling the guide rails, transferring the welded side plate guide rail assembly to the second roller conveyor line, and transferring the front wall panel to the second roller conveyor line. The guide rail assembly fixture is used to straighten and assemble the guide rails. The front wall panel assembly fixture is used to straighten and assemble the front wall panel. The side plate guide rail assembly fixture is used to assemble the guide rails and the side plates. The guide rail side plate spot welding workstation is used to weld the guide rails and side plates on the side plate guide rail assembly fixture.

[0014] Furthermore, the first tank assembly welding equipment includes a first tank assembly tooling, a first tank assembly welding workstation, and a third roller conveyor line. The first tank assembly welding workstation and the third roller conveyor line are located on opposite sides of the first tank assembly tooling. The third roller conveyor line cooperates with the second roller conveyor line and receives material from the second roller conveyor line. The first tank assembly tooling is used for assembling the front wall panel and the side panel, the front wall panel and the side panel respectively with the end flange plate, and the front wall panel and the side panel respectively with the partition plate. The first tank assembly welding workstation is used for welding the front wall panel and the side panel, the front wall panel and the side panel respectively with the end flange plate, and the front wall panel and the side panel respectively with the partition plate.

[0015] Furthermore, the plurality of welding devices also includes a second tank welding device, which is located on the same side of the transport device as the first tank welding device and is located at the end of the first tank welding device away from the second welding device. The second tank welding device is used for welding the side plate and the partition plate to the second layer plate respectively.

[0016] Furthermore, the second tank assembly welding equipment includes a second tank assembly welding fixture, a transverse unloading mechanism, and a fourth roller conveyor line. The fourth roller conveyor line is integrated into the second tank assembly welding fixture. The second tank assembly welding fixture is used for the assembly and welding of the side plate and the partition plate with the second layer plate. The transverse unloading mechanism is used to transfer the mast tank after assembly welding to the transport equipment.

[0017] Furthermore, the plurality of welding devices also include a third welding device and an auxiliary component welding device. The third welding device and the auxiliary component welding device are both located on the same side of the transport device as the first tank welding device. The third welding device is located at the end of the first tank welding device that is away from the second welding device, and the auxiliary component welding device is located at the end of the third welding device that is away from the first tank welding device. The third welding equipment is used for welding between multiple cover plates, and between the side plates and the end flanges and the cover plates respectively. The accessory welding equipment is used for welding accessories to the mast body.

[0018] Furthermore, the mast assembly production line also includes a manual welding area, an equipment reserved area, and a part buffer area. The manual welding area, the equipment reserved area, and the part buffer area are each located within the first equipment area or the second equipment area. The manual welding area is located on the other side of the transport equipment relative to the first welding equipment and is close to the front end of the transport equipment. The equipment reserved area, the inner weld welding equipment, and the outer weld welding equipment are located on the same side of the transport equipment and are arranged side by side. The part buffer area is located on the other side of the transport equipment relative to the inspection and straightening equipment and is close to the rear end of the transport equipment. The manual assembly and welding area is used for the manual assembly and welding of the mast slot, the equipment reserved area is used to add the assembly and welding equipment, the inner weld welding equipment or the outer weld welding equipment, and the unloading buffer area is used for unloading and temporarily storing the mast.

[0019] Furthermore, the mast assembly production line also includes a grinding device located in the first equipment area or the second equipment area. The grinding device and the inspection and straightening device are located on the same side of the transport equipment. The grinding device is used to grind the welds on the mast.

[0020] This application also provides a mast manufacturing method for use in the mast assembly production line described above, the mast manufacturing method comprising: Provide the various components of the mast and transport them to the corresponding assembly and welding equipment for assembly and welding; The transport equipment transports the assembled and welded mast trough to the inner weld welding equipment for inner weld welding, and transports the assembled and welded mast to the inner and outer weld welding equipment for outer weld welding. The transport equipment transports the welded mast to the inspection and straightening equipment for inspection and deformation correction.

[0021] Furthermore, the mast's various components include multiple side plates, multiple guide rails, multiple front wall plates, two end flange plates, multiple partitions, multiple second-layer plates, and multiple cover plates. The mast manufacturing method includes: The multiple side plates are welded together to a predetermined length; Multiple guide rails are welded together to a predetermined length and then welded together with the side plates. Multiple front wall panels are welded together to a predetermined length and then welded together with the side panels to form a mast groove. The end flange plates are welded to both ends of the mast slot; Multiple partitions are welded at intervals into the mast slot, and the second-layer plate is welded between the partitions and the side plates; Multiple cover plates are welded together to a predetermined length and then welded together with the mast groove to form the mast body.

[0022] The beneficial effects of this invention are as follows: by installing assembly welding equipment, inner weld welding equipment, outer weld welding equipment, and inspection and straightening equipment in the first and second equipment areas on opposite sides of the transport equipment, the assembly, welding, and transport of various mast components are realized. This achieves a high degree of automation, improves processing and production efficiency and product quality consistency, reduces manual labor, and lowers safety hazards. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the mast assembly production line in this invention.

[0024] Figure 2 This is a schematic diagram of the structure of the first automated welding equipment in this invention.

[0025] Figure 3 This is a schematic diagram of the structure of the second automated welding equipment in this invention.

[0026] Figure 4 This is a schematic diagram of the structure of the first automated tank welding equipment in this invention.

[0027] Figure 5 This is a schematic diagram of the structure of the second automated tank welding equipment in this invention.

[0028] Figure 6 This is a schematic diagram of the structure of the third automated welding equipment in this invention.

[0029] Figure 7 This is a schematic diagram of the structure of the automated welding equipment for internal weld seams in this invention.

[0030] Figure 8 This is a schematic diagram of the cross-sectional structure of the mast in the width direction in this invention.

[0031] Figure 9 This is a schematic diagram of the cross-sectional structure of the mast along its length in this invention.

[0032] Figure 10 This is a flowchart of the conventional mast manufacturing process in this invention.

[0033] Figure 11 This is a schematic diagram of the conventional welding process for the inner weld seam of the mast in this invention.

[0034] Figure 12 This is a schematic diagram of the conventional welding process for the outer weld seam of the mast in this invention.

[0035] Figure 13 This is a flowchart of the unconventional mast manufacturing process in this invention.

[0036] Figure 14 This is a flowchart of the conventional upper / lower mast production process in this invention.

[0037] Figure 15 This is one of the schematic diagrams of the welding process for the inner weld seam of the conventional upper / lower mast in this invention.

[0038] Figure 16 This is the second schematic diagram of the welding process for the inner weld seam of the conventional upper / lower mast in this invention.

[0039] Figure 17 This is one of the schematic diagrams of the conventional welding process for the outer weld seams of the upper / lower masts in this invention.

[0040] Figure 18 This is the second schematic diagram of the conventional welding process for the outer weld seams of the upper / lower masts in this invention.

[0041] Figure 19 This is a flowchart of the unconventional upper / lower mast manufacturing process in this invention.

[0042] In the diagram: 1. Side plate; 2. Guide rail; 3. Front wall plate; 4. Two end flanges; 5. Partition plate; 6. Second layer plate; 7. Cover plate; 10. Transport equipment; 20. First welding equipment; 21. Gantry truss robot; 22. First roller conveyor line; 23. Side plate assembly fixture; 24. Side plate welding workstation; 25. First material receiving area; 30. Second welding equipment; 31. Transverse movement mechanism; 32. Second roller conveyor line; 33. Guide rail assembly fixture; 34. Front wall plate assembly fixture; 35. Side plate guide rail assembly fixture; 36. Guide rail and side plate spot welding workstation; 37. Second material receiving area; 38. Third material receiving area; 40. First tank assembly welding equipment; 41. First tank assembly fixture; 42. First tank assembly welding workstation. 43. Third roller conveyor line; 44. Fourth material receiving area; 50. Second tank assembly welding equipment; 51. Second tank assembly welding fixture; 52. Lateral unloading mechanism; 53. Fourth roller conveyor line; 54. First crane; 55. Fifth material receiving area; 60. Third assembly welding equipment; 61. Cover plate prefabrication fixture; 62. Chain positioner; 63. Second crane; 64. Sixth material receiving area; 70. Auxiliary component assembly welding equipment; 80. Unloading buffer area; 90. Manual assembly welding area; 100. Inner weld welding equipment; 110. Outer weld welding equipment; 111. Positioning fixture device; 112. Support mechanism; 113. Ceiling rail welding device; 120. Equipment reserved area; 130. Grinding equipment; 140. Inspection and straightening equipment. Detailed Implementation

[0043] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation methods, structures, features, and effects of the mast assembly production line and mast manufacturing method proposed according to the present invention: Figure 1 This is a schematic diagram of the mast assembly production line in this invention. (See diagram below.) Figure 1 As shown in Embodiment 1 of the present invention, a mast assembly production line includes a transport device 10 and a first equipment area and a second equipment area located on opposite sides of the transport device 10. Both the first and second equipment areas extend along the transport direction of the transport device 10. Multiple production devices for processing masts are provided in the first and second equipment areas. The production devices in the first equipment area are arranged in a row along the transport direction of the transport device 10, and the production devices in the second equipment area are also arranged in a row along the transport direction of the transport device 10. This means that multiple production devices are distributed on opposite sides of the transport device 10, enabling automatic transfer of workpieces between multiple workstations (production devices) via the transport device 10, thereby improving factory utilization and processing efficiency. The transport device 10 can be an RGV (Rail Guided Vehicle), mainly composed of a material rack, RGV mother and daughter vehicle bodies, mother vehicle track, daughter vehicle track, mother vehicle traveling unit, daughter vehicle traveling unit, daughter vehicle lifting unit, and a scheduling system, etc. Specific details can be found in existing technologies.

[0044]

[0045] Main technical parameters of transport equipment 10: The RGV conveyor system has sufficient rigidity to support the safe and stable transport of workpieces over long periods of time.

[0046] The RGV mother-daughter vehicle has the functions of mother vehicle movement, daughter vehicle movement, and daughter vehicle lifting. All functions are automatically scheduled and operated, and automatically dock with the RGV docking station and positioner.

[0047] The RGV mother car is powered by a sliding contact line, while the daughter car is powered by a drum.

[0048] The positioning method for the RGV mother-daughter vehicle is a detection switch.

[0049] The RGV trolley track is equipped with buffers at both ends to safely decelerate the RGV trolley in extreme situations.

[0050] The RGV trolley runs smoothly, with sufficiently wide tracks in the forward and backward conveying directions to ensure that the RGV trolley does not tip over when accelerating or decelerating.

[0051] The RGV carriage has a clamping and centering mechanism that enables mast centering and clamping.

[0052] like Figure 1 As shown, the mast assembly production line includes multiple welding equipment, an inner weld welding equipment 100, an outer weld welding equipment 110, and an inspection and straightening equipment 140. The multiple welding equipment, the inner weld welding equipment 100, the outer weld welding equipment 110, and the inspection and straightening equipment 140 are each located in a first equipment area or a second equipment area. The welding equipment is used for the assembly and welding of various mast components. The inner weld welding equipment 100 is used for welding the welds on the inner side of the mast. The outer weld welding equipment 110 is used for welding the welds on the outer side of the mast. The inspection and straightening equipment 140 is used for inspecting the mast and correcting deformation.

[0053] Optionally, the multiple welding equipment includes a first welding equipment 20, a second welding equipment 30, and a first tank welding equipment 40. The first welding equipment 20, the second welding equipment 30, and the first tank welding equipment 40 are located on the same side of the transport equipment 10 and are arranged sequentially along the transport direction of the transport equipment 10. The first welding equipment 20 is used for welding between multiple side plates 1, the second welding equipment 30 is used for welding between multiple guide rails 2, between multiple front wall plates 3, and between guide rails 2 and side plates 1; the first tank welding equipment 40 is used for welding between front wall plates 3 and side plates 1, between front wall plates 3 and side plates 1 and end flange plates 4 respectively, and between front wall plates 3 and side plates 1 and partition plates 5 respectively.

[0054] The multiple welding equipment also includes a second tank welding equipment 50. The second tank welding equipment 50 and the first tank welding equipment 40 are located on the same side of the transport equipment 10, and are located at the end of the first tank welding equipment 40 away from the second welding equipment 30. The second tank welding equipment 50 is used for welding the side plate 1 and the partition plate 5 to the second layer plate 6 respectively.

[0055] The assembly welding equipment also includes a third assembly welding device 60 and an auxiliary component assembly welding device 70. Both the third assembly welding device 60 and the auxiliary component assembly welding device 70 are located on the same side of the transport equipment 10 as the first tank assembly welding device 40. The third assembly welding device 60 is located at the end of the first tank assembly welding device 40 away from the second assembly welding device 30, and the auxiliary component assembly welding device 70 is located at the end of the third assembly welding device 60 away from the first tank assembly welding device 40. The third assembly welding device 60 is used for assembly welding between multiple cover plates 7, and between the side plates 1 and the end flange plates 4 and the cover plates 7 respectively. The auxiliary component assembly welding device 70 is used for assembly welding between the auxiliary components and the mast body.

[0056] The mast assembly production line also includes a manual welding area 90, an equipment reserve area 120, and a part-loading buffer area 80. These areas are each located within either the first or second equipment area. The manual welding area 90 is located on the opposite side of the transport equipment 10 relative to the first welding equipment 20, and is close to the front end of the transport equipment 10. The equipment reserve area 120, the inner weld welding equipment 100, and the outer weld welding equipment 110 are located on the same side of the transport equipment 10 and arranged side-by-side. The part-loading buffer area 80 is located on the opposite side of the transport equipment 10 relative to the inspection and straightening equipment 140, and is close to the rear end of the transport equipment 10. The manual welding area 90 is used for the manual assembly and welding of the mast slot. The equipment reserve area 120 is used to add welding equipment, the inner weld welding equipment 100, or the outer weld welding equipment 110. The part-loading buffer area 80 is used for unloading and temporarily storing the mast.

[0057] The mast assembly line also includes a grinding device 130, which is located in the first or second equipment area. The grinding device 130 and the inspection and straightening device 140 are located on the same side of the transport equipment 10. The grinding device 130 is used to grind the welds on the mast.

[0058] Specifically, the first equipment area is located on the upper side of the transport equipment 10 (within the above). Figure 1 For reference), the first equipment area, along the transport direction of the transport equipment 10, is sequentially equipped with a first welding machine 20, a second welding machine 30, a first tank welding machine 40, a second tank welding machine 50, a third welding machine 60, two auxiliary component welding machines 70, and a lower component buffer area 80. The second equipment area is located below the transport equipment 10 (for reference only). Figure 1(For reference), the second equipment area, along the transport direction of transport equipment 10, includes a manual welding area 90, an inner weld welding device 100, an outer weld welding device 110, an equipment reserved area 120, two grinding devices 130, and an inspection and straightening device 140. The mast assembly production line is a complex system engineering project, composed of multiple functional module equipment working together. The collaborative work of each module ensures the high efficiency and stability of the welding process. It can realize functions such as workpiece assembly, continuous welding, repair welding, grinding, and straightening. The production line's central control system has functions such as workpiece management, task scheduling, program management, and equipment operation status monitoring.

[0059] Figure 2 This is a structural schematic diagram of the first automated welding equipment in this invention. (See diagram below.) Figure 2 As shown, the first welding equipment 20 is an automatic side plate welding equipment. The first welding equipment 20 includes a gantry manipulator 21, a first roller conveyor line 22, a side plate assembly fixture 23, and a side plate welding workstation 24. The gantry manipulator 21 is located above the first roller conveyor line 22 and is used to transfer the side plates 1 onto the first roller conveyor line 22. The first roller conveyor line 22 is used to transport the side plates 1 to the side plate assembly fixture 23 for assembly and to transport the welded side plates 1 to the second welding equipment 30. The side plate welding workstation 24 is used to weld the assembled side plates 1 together. The first welding equipment 20 also includes a dust removal system and a first receiving area 25 to remove dust and fumes generated during welding. AGVs (Automated Guided Vehicles) are used to transport the side plates to the first receiving area 25 for storage, and then the gantry manipulator 21 transfers them to the first roller conveyor line 22.

[0060]

[0061] Main technical requirements for the first group of welding equipment 20: (1) Gantry gantry robot ① It is mainly used to automatically transport and load side plates from the first material receiving area to the first roller conveyor line; ② The gantry crane consists of an X-axis column, a Y-axis beam, a Z-axis housing, a drive mechanism, a ground rail, an electromagnetic gripper, and a control system. ③ The gantry crane robot can automatically feed side plates and automatically dock with the first roller conveyor line; ④ The gantry truss handling fixture is installed at the end of the truss machinery and uses electromagnetic adsorption to grasp individual pieces. No interference should occur during the grasping process. (2) First roller conveyor line ① Mainly used to automatically transport side plates to the side plate assembly fixture; ②The first roller conveyor system consists of a support mechanism, a drive mechanism, rollers, a positioning mechanism, a guiding mechanism, and a control system; ③ The first roller conveyor system uses a servo motor to drive the reducer, sprocket, chain, and rollers to achieve forward and reverse conveying; ④ The first roller conveyor system can realize automatic conveying, positioning and guiding of workpieces. It has sufficient rigidity to bear the workpieces and can automatically dock with tooling. ⑤ The first roller conveyor system shall not be affected by the deflection of the side plates; ⑥ The workpiece must not crawl, vibrate, or deviate during the conveying process, and it must have both automatic and manual conveying functions; (3) Side plate assembly tooling ① Primarily used for automatically assembling and welding side plates together; ②The side plate assembly tooling consists of a tooling base, positioning mechanism, clamping mechanism, clearance control mechanism, anti-deformation adjustment mechanism, cooling system, control system and related auxiliary devices.

[0062] ③ The side panel positioning adopts automatic shape positioning, and it is necessary to ensure that each side panel is aligned with the side panel assembly surface.

[0063] ④ The side plate assembly tooling can achieve reverse deformation and gap adjustment, and the water-cooled copper pad can meet the welding process of single-sided welding and double-sided forming.

[0064] ⑤ When welding splicing seams, there is a liftable backing plate at the bottom to ensure the formation of the weld seam on the back side.

[0065] ⑥ The tooling of the side plate assembly ensures that the mating surfaces of the side plate and the guide rail are flush, and misalignment and unevenness are not allowed.

[0066] (4) Side plate welding workstation ① Primarily used for automatically spot-fixing and welding side plates together; ②The side plate welding workstation consists of the main structure, welding robot, welding machine, welding torch, torch cleaning and wire cutting mechanism, control system and related auxiliary devices.

[0067] ③ It can realize automatic spotting and welding of side plate welds.

[0068] ④ The main structure is made of welded steel plates or profiles, and the robot can be mounted on the corresponding support mechanism.

[0069] The main functions of the second welding equipment 30 are: (1) It is mainly used for welding, grinding and shaping of guide rails after welding. It is compatible with guide rails with cross-sectional dimensions of 80×80mm and 110×110mm.

[0070] (2) The automatic assembly station for side plate guide rails is mainly used for assembling and positioning the left and right side plate assemblies and guide rail assemblies of conventional masts.

[0071] (3) The front wall panel assembly station is mainly used for assembling the front wall panels of the middle mast.

[0072] Figure 3 This is a schematic diagram of the structure of the second automated welding equipment in this invention. Figure 3 As shown, the second welding equipment 30 includes a transverse mechanism 31, a second roller conveyor line 32, a guide rail assembly tooling 33, a front wall panel assembly tooling 34, a side panel guide rail assembly tooling 35, and a guide rail side panel spot welding workstation 36. The second roller conveyor line 32 cooperates with the first roller conveyor line 22 and receives the material from the first roller conveyor line 22. The transverse mechanism 31 is located above the second roller conveyor line 32, the front wall panel assembly tooling 34, and the side panel guide rail assembly tooling 35. The transverse mechanism 31 is used to transfer the side panel 1 to the side... The guide rail assembly tooling 35 assembles the guide rail 2, transfers the welded side plate guide rail assembly to the second roller conveyor line 32, and transfers the front wall panel 3 to the second roller conveyor line 32. The guide rail assembly tooling 33 is used for straightening and assembling the guide rail 2, the front wall panel assembly tooling 34 is used for straightening and assembling the front wall panel 3, the side plate guide rail assembly tooling 35 is used for assembling the guide rail 2 and the side plate 1, and the guide rail side plate spot welding workstation 36 is used for welding the guide rail 2 and the side plate 1 on the side plate guide rail assembly tooling 35. The guide rail assembly tooling 33 mainly consists of a guide rail prefabrication and straightening platform, straightening tools, and grinding tools. The front wall panel assembly tooling 34 mainly consists of a front wall panel assembly tooling, grinding tools, and a dust removal system. The second welding equipment 30 also includes a second material receiving area 37 and a third material receiving area 38. AGVs (Automated Guided Vehicles) are used to transport the guide rail material and the front wall panel material to the second material receiving area 37 and the third material receiving area 38 for storage, respectively.

[0073]

[0074]

[0075]

[0076] Main technical requirements for the second welding equipment 30: (1) Guide rail assembly tooling and front wall panel assembly tooling ①The guide rail assembly consists of a tooling base, a positioning mechanism, a clamping mechanism, and related auxiliary devices.

[0077] ②The front wall panel assembly tooling consists of a tooling base, a positioning mechanism, and related auxiliary devices.

[0078] ③ The guide rail assembly ensures that the guide rail and the guide rail assembly surface are flush, and misalignment and unevenness are not allowed.

[0079] ④ When assembling the guide rails, use manual positioning and clamping based on their shape.

[0080] ⑤ The guide rail assembly and the front wall panel assembly are made of multiple sections spliced ​​together, which have sufficient rigidity and strength.

[0081] ⑥ The guide rail assembly and the front wall panel assembly should have sufficient space for assembly and welding, and should not affect welding operations and observation, nor hinder the loading and unloading of workpieces. The entire welding production process should be in a stable working state.

[0082] ⑦ The guide rail assembly and the front wall panel assembly have the necessary electrical and thermal conductivity, and are easy to clean of welding slag and other debris.

[0083] ⑧ The straightness is checked using the platform as the benchmark. After manual inspection, flame straightening is performed and the straightening is cooled by compressed air from the factory.

[0084] (2) Second roller conveyor line ① It is mainly used to transport the side plate guide rail assembly and the front wall panel assembly to the first tank welding equipment.

[0085] ②The second roller conveyor line consists of a support mechanism, a drive mechanism, rollers, a guide mechanism, and a control system.

[0086] ③ The second roller conveyor line uses a variable frequency motor to drive a reducer, sprocket, chain, and roller to achieve forward and reverse conveying.

[0087] ④ The second roller conveyor line can realize automatic workpiece conveying, has sufficient rigidity to bear the workpiece, and can automatically dock with the first tank welding equipment.

[0088] ⑤ The second roller conveyor line shall not be affected by the deflection of the side plate guide rail assembly and the front wall panel assembly.

[0089] ⑥ The workpiece must not crawl, vibrate, or deviate during the conveying process, and it must have both automatic and manual conveying functions.

[0090] (3) Tooling for assembling side plate guide rails ① It is mainly used to automatically assemble the side plate assembly and the guide rail assembly, and is compatible with the workpiece specified in the protocol.

[0091] ②The side plate guide rail assembly consists of a tooling base, positioning mechanism, clamping mechanism, top clamping mechanism, conveying mechanism, control system and related auxiliary devices.

[0092] ③ The side panel and guide rail are positioned using automatic positioning and clamping based on their shape. It is necessary to ensure that the outer edge of the side panel is 15mm away from the outer edge of the guide rail.

[0093] ④ The side plate guide rail assembly automatically eliminates the fitting gap between the guide rail side plates.

[0094] ⑤ The side plate guide rail assembly has multiple guide rail clamping mechanisms to prevent welding deformation.

[0095] ⑥ The side plate guide rail assembly should have sufficient space for assembly and welding, should not affect welding operations and observation, should not hinder the loading and unloading of workpieces, and should be in a stable working state throughout the entire welding production process.

[0096] ⑦ The conveying mechanism can automatically convey the side plates to the side plate guide rail assembly tooling.

[0097] ⑧ The conveying mechanism shall not be affected by the deflection of the side plate assembly; ⑨ The conveying mechanism uses a variable frequency motor to drive a reducer, sprocket, chain, and roller to achieve forward and reverse conveying; (4) Guide rail side plate spot welding workstation ① It is mainly used for automatic spotting of weld seams between side plates and guide rails, and is compatible with workpieces specified in the protocol.

[0098] ②The guide rail side plate spot welding workstation consists of the main structure, robot walking rail, welding robot, welding machine, welding torch, torch cleaning and wire cutting mechanism, control system and related auxiliary devices.

[0099] ③ The main structure is made of welded steel plates or profiles, and the robot can be installed on the corresponding support mechanism.

[0100] ④ The main structure does not affect the hoisting and clamping of the workpiece, and there is no interference.

[0101] ⑤ It can automatically locate and weld.

[0102] ⑥ The robot's X-axis walking mechanism uses an external axis motor to drive the moving mechanism to slide on a linear guide rail. The walking system, as the robot's external axis, can be freely programmed, is suitable for robot installation, and its walking speed and acceleration are adjustable, ensuring that the mechanism is stable and does not shake during walking.

[0103] ⑦ The tracks on the traveling mechanism should be dustproof. In addition to bearing the weight of each system required in the design of the mechanism, the external shaft must also be able to bear the weight of no less than one barrel of welding wire (≈250kg / barrel).

[0104] ⑧ When the walking mechanism operates with continuous linkage between the internal and external axes of the robot, even at extreme speeds, it is required to move smoothly and flexibly without large vibrations or shaking, and without any internal noise from the robot.

[0105] ⑨ The walking mechanism should be easy to maintain and repair, the external control box should be sturdy, durable and movable, and the lubrication system should use a periodic automatic lubrication method.

[0106] (5) Transverse movement mechanism ① It is mainly used to transport the side panel guide rail assembly to the second roller conveyor line and to transport the front wall panel assembly from the front wall panel assembly fixture to the second roller conveyor line.

[0107] ②The lateral movement mechanism consists of a support mechanism, a drive mechanism, a lifting mechanism, and a control system.

[0108] ③ The transverse movement mechanism drives the slide table through a servo motor, linear guide pair, and gear rack pair.

[0109] ④ The transverse mechanism can realize automatic transverse movement and lifting of the workpiece, and has sufficient rigidity to support the workpiece.

[0110] ⑤ The transverse movement mechanism can automatically dock with the second roller conveyor line, the front wall panel assembly tooling, and the side plate guide rail assembly tooling.

[0111] ⑥ The transverse movement mechanism shall not be affected by workpiece disturbance.

[0112] ⑦ No crawling, vibration, deviation, or interference should occur during the workpiece lateral movement process. It should have both automatic and manual lateral movement functions.

[0113] The first-stage tank assembly welding equipment 40 is mainly used for automatic assembly of mast tanks and automatic welding of hidden welds under the second-layer plates. Figure 4 This is a schematic diagram of the structure of the first tank assembly welding equipment in this invention. (See diagram below.) Figure 4 As shown, the first tank assembly welding equipment 40 includes a first tank assembly tooling 41, a first tank assembly welding workstation 42, and a third roller conveyor line 43. The first tank assembly welding workstation 42 and the third roller conveyor line 43 are located on opposite sides of the first tank assembly tooling 41. The third roller conveyor line 43 cooperates with the second roller conveyor line 32 and receives the material from the second roller conveyor line 32. The first tank assembly tooling 41 is used for the assembly between the front wall plate 3 and the side plate 1, between the front wall plate 3 and the side plate 1 and the end flange plate 4, and between the front wall plate 3 and the side plate 1 and the partition plate 5. The first tank assembly welding workstation 42 is used for welding between the front wall plate 3 and the side plate 1, between the front wall plate 3 and the side plate 1 and the end flange plate 4, and between the front wall plate 3 and the side plate 1 and the partition plate 5. Of course, the first tank assembly welding equipment 40 also includes a dust removal system and a fourth material receiving area 44. AGVs (Automated Guided Vehicles) are used to transport the end flange plates and partition plates to the fourth material receiving area 44 for storage.

[0114]

[0115] The main technical requirements for the first tank assembly welding equipment 40 are as follows: (1) Third roller conveyor line ① It is mainly used to automatically transport the side panel assembly and front wall panel assembly to the first slot assembly tooling.

[0116] ②The third roller conveyor line consists of a support mechanism, a drive mechanism, rollers, a lifting mechanism, and a control system.

[0117] ③ The third roller conveyor line uses a variable frequency motor to drive a reducer, sprocket, chain, and roller to achieve forward and reverse conveying.

[0118] ④ The third roller conveyor line can realize automatic workpiece conveying, has sufficient rigidity to bear the workpiece, and can automatically dock with tooling.

[0119] ⑤ The conveying system must not be affected by workpiece disturbance.

[0120] ⑥ The workpiece must not crawl, vibrate, or deviate during the conveying process, and it must have both automatic and manual conveying functions.

[0121] ⑦ It has a lifting mechanism to separate the conveying system from the assembly tooling, and the lifting mechanism shall not interfere with the assembly tooling.

[0122] (2) First set of tooling for the tank assembly ① Mainly used for automatic assembly of side panel assemblies, front wall panel assemblies, partitions, and end flanges; ②The first set of tooling consists of a tooling base, positioning mechanism, clamping mechanism, flipping mechanism, control system and related auxiliary devices.

[0123] ③ The first time the tooling is assembled, the hydraulic cylinder and electromagnet are used to realize the automatic flipping and positioning of the left and right side plate guide rail components. The flipping mechanism has an automatic adsorption function.

[0124] ④ The first time the tooling is assembled, the right end plate mechanism is driven by a cylinder to achieve automatic positioning and adsorption of the right end flange.

[0125] ⑤ The first time the trough assembly tooling is assembled, the hydraulic cylinder and linear guide rail are used to push the side plate positioning mechanism to achieve the trough assembly and clamping.

[0126] ⑥ The side panel guide rail assembly and the front wall panel assembly are positioned using automatic shape positioning.

[0127] ⑦ The first slot group has multiple sets of side suction clamping mechanisms for positioning the side plate guide rail assembly.

[0128] ⑧ The first set of grooves has multiple clamping mechanisms to clamp the guide rails of the tooling, reducing deformation during welding.

[0129] (3) First tank assembly welding workstation ① It is mainly used for the automated gripping, positioning, spot welding, and welding of end flange plates and partitions, as well as the welding of internal partitions to front wall plates and side plates to front wall plates after assembly into a tank.

[0130] ②The first tank welding workstation consists of the main structure, robot walking rail, welding robot, handling robot, handling fixture, welding machine, welding torch, torch cleaning and wire cutting mechanism, control system and related auxiliary devices.

[0131] ③ The main structure is made of steel plates or profiles welded together. The welding robot can be mounted upside down on the C-shaped support mechanism, and the handling robot can be mounted upright on the corresponding support mechanism.

[0132] ④ The main structure does not affect the hoisting and clamping of the workpiece, and there is no interference.

[0133] ⑤ It can automatically locate and weld.

[0134] ⑥ The X-axis walking mechanism of the handling robot uses an external axis motor to drive the moving mechanism to slide on a linear guide rail. The walking system, as the external axis of the robot, can be freely programmed and is suitable for forward installation of the handling robot. The walking speed and acceleration are adjustable to ensure that the mechanism is stable and does not shake during walking.

[0135] ⑦ The track on the walking mechanism should be dustproof. In addition to the weight of each system required in the mechanism design, the external axis of the welding robot must also be able to bear the weight of no less than one barrel of welding wire (≈250Kg / barrel).

[0136] ⑧ When the walking mechanism operates with continuous linkage between the internal and external axes of the robot, even at extreme speeds, it is required to move smoothly and flexibly without large vibrations or shaking, and without any internal noise from the robot.

[0137] ⑨ The walking mechanism should be easy to maintain and repair, the external control box should be sturdy, durable and movable, and the lubrication system should use a periodic automatic lubrication method.

[0138] ⑩ The handling robot can automatically grab, transport, position, and assemble partitions, end flanges, and small stiffening plates under second-layer plates.

[0139] The design of handling fixtures must take into account the prevention of workpiece falling and rotation to ensure safe, reliable and stable gripping and handling; It is equipped with a secondary positioning mechanism to achieve secondary positioning of the partition, end flange, and small stiffening plate under the second layer plate after they are picked up from the material frame.

[0140] The second-stage tank assembly welding equipment 50 is mainly used for assembling the second-layer plate and the mast tank. Figure 5 This is a schematic diagram of the structure of the second tank assembly welding equipment in this invention. (See diagram below.) Figure 5As shown, the second tank assembly welding equipment 50 includes a second tank assembly welding fixture 51, a transverse unloading mechanism 52, and a fourth roller conveyor line 53. The fourth roller conveyor line 53 is integrated into the second tank assembly welding fixture 51. The second tank assembly welding fixture 51 is used for the assembly and welding of the side plates 1 and partitions 5 with the second-layer plates 6. The transverse unloading mechanism 52 is used to transfer the assembled mast tank to the transport equipment 10. Of course, the second tank assembly welding equipment 50 also includes grinding tools, a dust removal system, a first crane (KBK) 54, and a fifth material receiving area 55. The grinding tools are used to grind the weld seams, the first crane 54 is used to lift the mast tank, and an AGV (Automated Guided Vehicle) is used to transport the second-layer plates to the fifth material receiving area 55 for storage.

[0141]

[0142] Main technical requirements for the second tank assembly welding equipment 50: (1) Fourth roller conveyor line ① It is mainly used to automatically transport the mast trough to the secondary trough assembly welding fixture.

[0143] ②The fourth roller conveyor line consists of a support mechanism, a drive mechanism, rollers, a positioning mechanism, a guiding mechanism, and a control system.

[0144] ③ The fourth roller conveyor line uses a variable frequency motor to drive a reducer, sprocket, chain, and rollers to achieve forward and reverse conveying.

[0145] ④ The conveying system can realize automatic conveying, positioning and guiding of workpieces. It has sufficient rigidity to support the workpieces and can automatically dock with tooling.

[0146] ⑤ The fourth roller conveyor line shall not be affected by workpiece disturbance.

[0147] ⑥ The workpiece must not crawl, vibrate, or deviate during the conveying process, and it must have both automatic and manual conveying functions.

[0148] (2) Second tank assembly welding fixture ①The second tank assembly welding fixture consists of a fixture base, a positioning mechanism, and related auxiliary devices.

[0149] ② The tooling can be used to position the top plate of the end flange, and the end flange positioning mechanism is manually loaded and unloaded.

[0150] ③ The tooling meets the positioning and clamping requirements of the corresponding workpiece. The tooling is easy and quick to load, unload and position. The fixture design is reasonable, safe and reliable.

[0151] ④ The tooling should have sufficient space for assembly and welding, should not affect welding operations and observation, should not hinder the loading and unloading of workpieces, and should be in a stable working state throughout the entire welding production process.

[0152] ⑤ The tooling has the necessary electrical and thermal conductivity and is easy to clean of welding slag and other debris.

[0153] ⑥ The tooling platform adopts a welded structure of steel plates and profiles. The working platform and fixture are annealed or aged after welding to eliminate internal stress, and then machined after straightening.

[0154] (3) Transverse feeding mechanism ① It is mainly used to transport the tank assembly from the second tank welding fixture to the RGV (transport equipment 10) connecting frame.

[0155] ②The transverse feeding mechanism consists of a support mechanism, a drive mechanism, a lifting mechanism, and a control system.

[0156] ③ The transverse mechanism can realize automatic transverse movement and lifting of the workpiece, and has sufficient rigidity to support the workpiece.

[0157] ④ The transverse movement mechanism can automatically dock with the roller conveyor system, assembly tooling, and RGV connector.

[0158] ⑤ The transverse movement mechanism shall not be affected by workpiece disturbance.

[0159] ⑥ The workpiece must not crawl, vibrate, or deviate during the lateral movement process, and it must have both automatic and manual lateral movement functions.

[0160] (4) KBK, Correction Tools ①KBK must cover the incoming material area, and the lifting of materials must not be biased.

[0161] ② Magnetic lifting devices are required to facilitate the lifting and placement of materials.

[0162] ③ The calibration tool, the flame gun, is equipped with corresponding air tubes and other auxiliary calibration fixtures.

[0163] The third welding equipment 60 is mainly used for cover plate prefabrication, cover plate and mast groove assembly, internal repair welding and small part assembly welding. Figure 6 This is a schematic diagram of the structure of the third welding equipment in this invention. (See diagram below.) Figure 6As shown, the third welding equipment 60 mainly consists of a cover plate prefabrication fixture 61, a chain positioner 62, a second crane (KBK) 63, a dust removal system, a tilting mechanism, and a sixth material receiving area 64. The chain positioner 62 includes a tilting mechanism. The cover plate prefabrication fixture 61 is used for prefabrication of the cover plate, the chain positioner 62 is used for tilting and moving the mast slot, the second crane 63 is used for lifting the mast slot, and an AGV (Automated Guided Vehicle) is used to transport the cover plate material to the sixth material receiving area 64 for storage.

[0164]

[0165] Main technical requirements for the third group of welding equipment 60: (1) Prefabrication tooling for cover plate ①The prefabrication tooling for the cover plate consists of a tooling base, a positioning mechanism, a flipping mechanism, and related auxiliary devices.

[0166] ② The prefabricated cover plate fixtures allow for manual positioning of the corresponding workpieces. The fixtures are easy and quick to load, unload, and position, and the fixtures are reasonably designed and safe and reliable.

[0167] ③ The prefabricated cover plate has the necessary electrical and thermal conductivity, and is easy to clean up welding slag and other debris.

[0168] ④ The prefabricated tooling platform for the cover plate adopts a welded structure of steel plate and profile. The working platform is a multi-hole platform. The working platform and fixture are annealed or aged after welding to eliminate internal stress. After straightening, they are machined.

[0169] ⑤ The flipping mechanism can automatically flip the cover plate assembly and automatically dock with the prefabricated tooling.

[0170] (2) Chain positioner ① The positioner uses a chain structure, which mainly consists of a frame, a tilting mechanism, a tilting drive system, a lifting system, safety devices, and a control system.

[0171] ② The positioner adopts a two-axis head and tail positioner. Both X-axis movements are equipped with drives. The flipping torque meets the requirements for stable and free movement of the workpiece after installation. The positioner can easily flip the workpiece, and each axis can be flipped independently.

[0172] ③ The positioner's rotating shaft is controlled by a variable frequency motor and can be rotated manually via an external button.

[0173] ④ The positioner can automatically dock with the RGV.

[0174] The auxiliary component welding equipment 70 and the grinding equipment 130 are structurally similar to the third welding equipment 60. The auxiliary component welding equipment 70 mainly consists of auxiliary component prefabrication fixtures, a chain positioner, a crane (KBK), a dust removal system, and a material receiving area. The auxiliary component prefabrication fixtures are used for the prefabrication of small parts (such as pivot structures on masts), and AGVs (Automated Guided Vehicles) are used to transport the small parts to the material receiving area for storage. The grinding equipment 130 mainly consists of a grinding mechanism, a chain positioner, a crane (KBK), and a dust removal system. The grinding mechanism is used for grinding the weld seams.

[0175]

[0176] Main technical requirements for auxiliary component welding equipment and grinding equipment: (1) Chain positioner ① The chain positioner uses a chain structure, which mainly consists of a frame, a tilting mechanism, a tilting drive system, a lifting system, safety devices, and a control system.

[0177] ② The chain positioner adopts a two-axis head and tail positioner. Both X-axis movements are equipped with drives. The flipping torque meets the requirements for stable and free movement of the workpiece after installation. The positioner can easily flip the workpiece, and each axis can be flipped independently.

[0178] ③ The chain positioner's rotating shaft is controlled by a variable frequency motor and can be rotated manually via an external button.

[0179] (2) The chain positioner can automatically dock with the RGV. KBK needs to cover the incoming material area, and the material lifting is not allowed to be tilted.

[0180] (3) Magnetic lifting devices should be used for small items to facilitate the lifting and placement of materials.

[0181] (4) Each small hinge seat is equipped with corresponding pairing tooling to ensure relative coaxiality. Each hinge seat is positioned with auxiliary tooling or template. The remaining small parts are positioned by manual scribing.

[0182] The internal weld seam welding equipment 100 is mainly used for intermittent welding of the partitions and side plates inside the mast trough, as well as automatic full welding of the partitions and the second-layer plates, and the second-layer plates and the side plates. The external weld seam welding equipment 110 is mainly used for automatic full welding of the side plates outside the mast to the front wall plate, cover plate, and guide rail. The internal weld seam welding equipment 100 and the external weld seam welding equipment 110 have similar structures. Figure 7 This is a structural schematic diagram of the internal weld seam welding equipment in this invention. (See diagram below.) Figure 7As shown, both the inner weld welding equipment 100 and the outer weld welding equipment 110 include a displacement clamp device 111, a support mechanism 112, a ceiling rail welding device 113, and a dust removal system. The welding arm of the ceiling rail welding device 113 is located above the support mechanism 112, and the displacement clamp device 111 is located on the support mechanism 112. The support mechanism 112 is used to support the mast slot, the displacement clamp device 111 is used to clamp the mast slot and change the placement angle of the mast slot, and the ceiling rail welding device 113 is used to weld the weld seam of the mast slot.

[0183]

[0184] Main technical requirements for internal weld welding equipment 100 and external weld welding equipment 110: ① It consists of a main structure, welding robot, welding machine, welding torch, torch cleaning and wire cutting mechanism, head and tail positioner, support mechanism, control system and related auxiliary devices.

[0185] ② The overhead rail welding device adopts an overhead rail structure. The main structure is made of steel plates or profiles welded together. The robot is inverted on the corresponding support mechanism. The effective stroke of the robot meets the welding requirements of the workpiece. The robot has a good welding posture and welding position. The robot and each external axis limit do not affect the welding posture and welding rate, ensuring the welding quality of the weld and avoiding the robot being in the extreme position during welding.

[0186] ③ Sufficient space is left between the crossbeam, column and positioner of the traveling mechanism to ensure that the workpiece is hoisted and clamped without interference.

[0187] ④ The robot's XYZ axis walking mechanism uses an external axis motor to drive the moving mechanism to slide on a linear guide rail. The walking system, as the robot's external axis, can be freely programmed, is suitable for robot inversion, and the walking speed and acceleration are adjustable to ensure that the mechanism is stable and does not shake during walking.

[0188] ⑤ The tracks on the traveling mechanism should be dustproof. In addition to bearing the weight of each system required in the mechanism design, the external shaft must also be able to bear the weight of no less than one barrel of welding wire (≈250Kg / barrel).

[0189] ⑥ When the walking mechanism operates with continuous linkage between the internal and external axes of the robot, even at extreme speeds, it is required to move smoothly and flexibly without large vibrations or shaking, and without any internal noise from the robot. Sufficient space must be provided on the walking mechanism for dust removal equipment.

[0190] ⑦ The walking mechanism should be easy to maintain and repair, the external control box should be sturdy, durable and movable, and the lubrication system should use a periodic automatic lubrication method.

[0191] ⑧ The robot can automatically locate and weld workpieces in accordance with compatible protocols.

[0192] ⑨ The positioner adopts a two-axis head and tail positioner. Both the head and tail positioners are equipped with flipping and X-axis travel drives. The flipping torque meets the requirements for the stable and free movement of the workpiece after installation. The positioner can easily rotate the workpiece between the two axes, and each axis can rotate independently.

[0193] ⑩ The positioner's rotating axis is controlled by a PLC and can be rotated manually via an external button.

[0194] The positioner's motion mechanism must have a self-locking function, not slip under load, be highly reliable, and have a power failure self-protection function.

[0195] The positioner fixture is driven by a motor and is compatible with the automatic clamping of workpieces as specified in the protocol.

[0196] The positioner has the necessary electrical and thermal conductivity properties.

[0197] The positioner can automatically dock with the RGV.

[0198] The positioner needs to be equipped with two sets of electric lifting mechanisms in the middle to reduce the deformation of the mast due to its own weight during the welding process.

[0199] The lifting mechanism is electrically operated, and the lifting height can be controlled by a programmable control system to accommodate workpieces of different sizes.

[0200] The workstation is surrounded by a fence for protection.

[0201] The inspection and straightening equipment 140 is mainly used for mast straightness inspection and straightening. The inspection and straightening equipment 140 mainly consists of a chain positioner, an automatic straightness inspection and marking mechanism, and other parts.

[0202]

[0203] Main technical requirements for testing orthopedic equipment 140: (1) Chain positioner ① The chain positioner uses a chain structure, which mainly consists of a frame, a tilting mechanism, a tilting drive system, a lifting system, safety devices, and a control system.

[0204] ② The chain positioner adopts a two-axis head and tail positioner. Both X-axis movements are equipped with drives. The flipping torque meets the requirements for stable and free movement of the workpiece after installation. The positioner can easily flip the workpiece, and each axis can be flipped independently.

[0205] ③ The chain positioner's rotating shaft is controlled by a variable frequency motor and can be rotated manually via an external button.

[0206] (2) Automatic straightness detection and marking mechanism ① It is mainly used for mast straightness detection and marking of high points for easy manual correction.

[0207] ②The automatic inspection mechanism consists of a main structure, a walking mechanism, an inspection system, an etching system, and a control system, and is compatible with workpieces specified in the protocol.

[0208] ③ It can move in the X, Y, and Z directions, and the X, Y, and Z directions can be linked. The detection adopts laser detection and laser etching marking, and the detection accuracy can meet the straightness quality requirements.

[0209] ④ It can detect the straightness of the mast on three sides and automatically mark the correction points, and then manually correct the shape according to the marked points.

[0210] ⑤ Laser markings should be easy for manual identification.

[0211] ⑥ The straightness test results should not be affected by errors in the placement of the mast on the positioner; the placement error can be automatically corrected.

[0212] ⑦ Equipped with a three-color audible and visual warning light, the warning light flashes and sounds when the workpiece is raised or lowered or moves; ⑧ It has both automatic and manual control functions.

[0213] (3) The calibration is performed using artificial flame, and the calibration cooling is performed using factory compressed air.

[0214] Among them, the assembly station is a basic work unit specifically used to complete the assembly operation during the production or riveting process. It usually refers to a fixed or semi-fixed space area equipped with the necessary equipment, tools, materials and operators, used to temporarily or permanently connect, position and fix multiple parts according to process requirements, in preparation for subsequent welding processes.

[0215] A welding station is a basic work unit used to complete specific welding operations in the welding production process. It typically refers to a fixed or semi-fixed spatial area equipped with welding equipment, tooling fixtures, auxiliary tools, and safety facilities, where welders or automated systems perform welding tasks. Its core functions are to achieve workpiece positioning, welding operations, and quality control, ensuring the stability and efficiency of the welding process.

[0216] The grinding and inspection / correction station is an integrated workstation in the manufacturing process used to complete workpiece surface treatment (such as grinding and polishing) and geometric accuracy correction. It usually consists of grinding equipment, inspection instruments, correction devices and auxiliary systems, aiming to achieve integrated operation of improving workpiece surface quality and controlling dimensional accuracy.

[0217] Welding is a process technology that uses heat, pressure, or both to bond two separate workpieces (usually metals or thermoplastics) at the atomic or molecular level, forming a permanent connection. The core of welding lies in overcoming surface obstacles through physical or chemical means to achieve metallurgical bonding or mechanical connection.

[0218] The selection of welding materials for the mid-mast should follow the principles of equal strength matching and process compatibility: Q355B low alloy steel: ER50-6 solid welding wire (diameter 1.2mm) should be selected, and the shielding gas should be 80%Ar+20%CO2 (purity ≥99.995%).

[0219] Welding method: Gas metal arc welding (GMAW), used for welds in all positions (such as vertical welding of stiffening plates).

[0220] Welding positions: Only ship-shaped welding, flat fillet welding, and horizontal welding positions are allowed. If it is necessary to use uphill or downhill welding in a certain area, the angle must be ≤15°, except for the tank assembly station and vertical welding under the second layer plate. Main weld and bevel types: fillet weld, single-sided V-groove, V-groove, multi-layer multi-pass welding, single-layer single-pass welding.

[0221] Asymmetry in the welds of the midmast (such as the concentrated arrangement of guide rails on one side) can easily lead to bending deformation, which needs to be controlled through scientific welding sequence design. Segmented back-welding method: Divide the long weld into 300-400mm segments and use symmetrical back-welding from the center to both ends (segment length deviation ≤ ±10mm).

[0222] Energy balance method: Weld high-density weld areas (such as guide rail mounting surfaces) first, and low-density areas later, so that shrinkage stresses cancel each other out.

[0223] Reverse deformation pre-setting: For example, when the side plate is welded together, reverse deflection is applied by the hydraulic cylinder (the pre-deformation amount is calculated by the formula Δ=0.15L² / D, where L is the length and D is the section height).

[0224] Weld grinding: After the weld has cooled, grind the weld until it is flush with the base material, with some areas protruding less than 0.5mm from the base material surface and recessed 0.5mm from the base material; the grinding range shall not exceed 30mm on one side of the fusion line between the weld surface and the base material.

[0225] Post-weld straightening: Using the straight line as the inspection benchmark, check the straightness of the bottom and sides of the mast, measure and mark the high points, manually hoist and assemble the assembly blocks to press down the straightening points at various locations on the mast; use the outer flame of a flame to quickly heat the surface of the mast, and at the same time use a temperature gun (measuring range not less than 400-1000 degrees) to measure the temperature of the steel plate at the heating point or observe the color of the steel plate to ensure that the temperature does not exceed the maximum allowable temperature (650°). After heating to a suitable temperature, use compressed air to cool the straightening points to shorten the straightening cooling time; try not to heat the same position repeatedly. When flame straightening requires repeated heating or multiple heating, the next heating should be carried out after the previous heating has completely cooled down.

[0226] Partial Manual Replacement Solution: In the assembly stage, all processes are performed manually with marking and simple tooling (such as C-clamps and jacks) for positioning and fixing. In the welding stage, all processes are performed manually using gas-shielded welding. Analysis: This solution requires the lowest equipment investment and is suitable for single-piece, very small-batch, or repair work. However, its drawbacks are extremely prominent: assembly accuracy and efficiency cannot be guaranteed, product quality fluctuates greatly, and the labor intensity and safety risks are extremely high, making it completely unsuitable for modern large-scale production.

[0227] Single Robot Workstation Replacement Solution: This solution involves purchasing only 1-2 large welding robots and positioners to complete all welding work at one or two workstations, with assembly still primarily done manually. Analysis: This solution requires less investment than full automation and offers some flexibility. However, the core bottleneck lies in the fact that assembly accuracy and efficiency still rely on manual labor. Robots, like skilled cooks without ingredients, cannot operate at their maximum capacity. Logistics still require vehicles, resulting in a production cycle time far lower than that of an automated production line.

[0228] AGV Replacement for RGV: This invention proposes using autonomously guided AGVs (Automated Guided Vehicles) to replace track-based RGVs for workpiece transfer. Analysis: While AGVs offer greater path flexibility, their positioning accuracy (typically ±5~10mm) is lower than RGVs (±2mm). For scenarios requiring precise docking with positioners, AGVs are insufficient. Furthermore, AGVs are costly under heavy loads and pose significant challenges to operational stability. The RGV solution chosen in this invention offers advantages in accuracy, reliability, and cost.

[0229] The advantages of the mast production line in this application are: Value: It has enabled the midmast manufacturing industry to transition from "labor-intensive" to "technology-intensive", significantly improving production efficiency (expected to increase by more than 50%) and product quality consistency, while significantly reducing labor costs and safety risks.

[0230] Effectiveness of the measures: Extremely high. The systematic integration of automated assembly, robotic welding, RGV logistics, and intelligent inspection fundamentally solves the problems of efficiency, quality, and flexibility.

[0231] Innovation level: High. This is mainly reflected in: ① the design and integration of the automatic assembly station for the tank body; ② the automatic docking logistics system of the RGV mother-daughter vehicle and the positioner; ③ the automatic straightness detection and laser marking technology.

[0232] Difficulty level: High. It involves the integration of technologies from multiple disciplines such as mechanics, electrical engineering, robotics, and software, and the tooling design and system debugging are complex.

[0233] Popularity: High. This production line model and process can be extended to the welding and manufacturing of upper and lower masts and other large box-shaped structural components for engineering machinery.

[0234] Usage effect: According to the standard content, the production line has been planned and designed and has the ability to realize flexible production of multiple models (covering the 140-550 series), which will bring about a qualitative leap in manufacturing level.

[0235] Figure 8 This is a schematic diagram of the cross-sectional structure of the mast in the width direction in this invention. Figure 9 This is a schematic diagram of the cross-sectional structure along the length of the mast in this invention. (See diagram below.) Figure 8 and Figure 9 As shown, the mid-mast includes side plates 1, guide rails 2, front wall plates 3, end flange plates 4, partition plates 5, second-layer plates 6, and cover plates 7. The side plates 1 are located on the left and right sides of the mid-mast and are welded to the front wall plates 3 and cover plates 7. The front wall plate 3 is located at the bottom of the mid-mast, and the cover plate 7 is located at the top of the mid-mast. Guide rails 2 are welded to the surface of each side plate 1 away from the front wall plate 3. The end flange plates 4 are located at both ends along the length of the mid-mast. The partition plates 5 and second-layer plates 6 are located inside the mid-mast. The partition plates 5 divide the interior of the mid-mast into multiple slots along its length. The second-layer plates 6 are positioned close to and parallel to the front wall plates 3. The mid-mast also includes some accessories, such as a pivot structure that rotatably connects to the upper mast, lower mast, and luffing mechanism.

[0236] This application also provides a method for manufacturing a mast, the requirements of which include: Raw materials: The raw materials used to manufacture the mast shall comply with the general technical requirements for delivery of low alloy high strength structural steel and steel products in GB / T 1591 or the relevant technical conditions such as the special technical agreement signed with the steel mill, and their material, specifications and dimensions shall meet the requirements of the drawings.

[0237] Material substitutions must be reviewed by the technical department before relevant departments and workshops can implement them.

[0238] The surface of the raw materials must not have defects such as bulges, pits, or sharp bends; the inner and outer surfaces should not have visible cracks, folds, roll marks, delamination, or scars.

[0239] Guide rail straightness: The total curvature of the guide rail should not exceed 1‰L of the total length of the guide rail, and the maximum should be ≤5mm; the curvature per meter of the guide rail should be ≤1mm.

[0240] When raw materials used to manufacture welded structural parts arrive at the factory, they must be verified by the quality control department based on the supplier's certificate of conformity and quality assurance certificate. Only after passing the visual inspection and measurement can they be put into storage.

[0241] The dimensional error of the side panels, front wall panels, and cover plates shall be ≤ ±1mm, the flatness shall be ≤ ±2mm, and the misalignment shall be ≤ 1mm.

[0242] Welding materials: The welding wire shall comply with the provisions of the current national standard GB / T 8110 "Carbon steel and low alloy steel welding wire for gas shielded arc welding".

[0243] The surface of the welding wire should be free of oil and rust, with an intact copper plating layer, a smooth surface without burrs, and no obvious bending or twisting. In its free state, the relaxed diameter should be greater than 380mm and the warp distance should be less than 25mm.

[0244] Unused solder wire must be returned to its original packaging and stored in a dry, well-ventilated place. Before reuse, the solder wire must be checked to ensure it is free of oil and rust, and that the copper plating is intact; otherwise, it must not be used.

[0245] Welding wire should be stored in a dry, well-ventilated place.

[0246] All gas shielded welding uses an argon-rich mixed gas (80% Ar + 20% CO2).

[0247] The argon gas used in gas shielded welding should comply with the national standard GB / T 4842 Argon, with a purity of not less than 99.99% and a moisture content of ≤15ppm.

[0248] The carbon dioxide used in gas shielded welding should comply with the national standard GB / T 6052 Industrial Liquid Carbon Dioxide, with a carbon dioxide content (V / V) of not less than 99.5% and no liquid water should be detected.

[0249] After the mixed gas is proportioned, the proportion and moisture content of the mixed gas at the gas station proportioning cabinet and the workshop terminal are tested respectively. The carbon dioxide content is 20% (detected by infrared gas analyzer), the allowable tolerance is within ±5% of the content, and the moisture content is ≤15ppm.

[0250] Welding machines and process equipment: The welding torch conforms to GB / T 15579.7 Arc Welding Equipment Part 7: Welding Torch and GB / T 15579.5 Arc Welding Equipment Part 5: Wire Feeding Device.

[0251] Appropriate welding auxiliary devices or process equipment should be selected based on the welding position and joint type of the components.

[0252] The welding machine and process equipment should be inspected to ensure the normal operation of the circuits, water circuits, gas circuits, liquid circuits and mechanical devices.

[0253] When using general process equipment, special attention should be paid to checking whether each part of the tooling is switched into place and to carefully check whether it matches the vehicle model being produced.

[0254] Welding safety shall comply with the relevant provisions of GB / T 9448 Welding and Cutting Safety Standard.

[0255] Pre-welding cleaning: Confirm the materials of the base material and welding material to ensure the conformity of the welding wire with the base material.

[0256] Before welding, the operator must conduct a rigorous self-inspection of the welding equipment, tooling, fixtures, workstation tools, and protective equipment. Construction can only proceed after confirming compliance with safe operating procedures. Ensure that there is no oil, rust, moisture, slag, or other debris within a 10-20mm radius on either side of the weld seam. Grind the welding area with a grinder until it achieves a metallic luster. Welding should be performed within 4 hours of grinding. If the time between grinding and welding is long, grind the area again with a wire brush before welding. All parts must pass inspection before assembly.

[0257] Group pairing requirements: Assembly and positioning should be done using tooling or marking to ensure that the assembled dimensions, position, and orientation conform to the drawings and process requirements. Assembly gaps should be controlled during assembly: 0.5–1.5 mm for butt welds and 0–1.5 mm for fillet welds. If local gaps are too large, manual underlay welding should be used to adjust them to the specified dimensions. If any product components are defective (bending, deformed, or exceeding dimensional tolerances), they should be corrected or straightened before assembly; forced assembly using external force is not permitted.

[0258] Assembly accuracy requirements: The assembly dimensions should not exceed ±1mm, perpendicularity ≤1mm, coaxiality ≤1mm, symmetry ≤2mm, and misalignment ≤1mm. For post-weld machining and high-precision positions marked on the drawings, measurement and verification should be performed to ensure a machining allowance of 4-5mm is left. For the assembly of hinge points, cylinder seats, and other positions, corresponding tooling and templates should be used.

[0259] Tack welding: The welding wire used for tack welding and the requirements for welders shall be in accordance with the requirements of the formal welding procedure documents. The dimensions and spacing requirements for tack welds are shown in Table 12.

[0260]

[0261] Tack welds should be placed at least 50mm away from intersections, and tack welding is strictly prohibited at the ends of existing welds. Any non-compliant tack welds (such as surface porosity, arc crater cracks, or incomplete welds) should be removed and re-welded; direct welding on defective welds is strictly prohibited. Before welding, both ends of the tack welds should be ground, and any excessive weld size, spatter, or wire adhesion should be addressed. If the weld joint includes tack welds, the tack welds should be integrated into the final weld bead and placed within the weld bead, not on areas without weld seams. If the steel requires preheating before welding, the tack welds also need preheating, with the preheating temperature being at least 30°C higher than the preheating temperature for the final weld.

[0262] Preheating: If the ambient temperature is below 5℃ or the humidity is above 85%, and no preheating is required, the area within 75mm of the starting weld should be preheated to at least 50℃ before welding. For workpieces that require preheating, the preheating temperature should be increased by 30 to 50℃ before welding.

[0263] The preheating area should be on both sides of the weld bevel, and its width should be more than 1.5 times the thickness of the plate at the welding point, and not less than 100 mm. The preheating temperature should be measured on the back of the heated surface of the weldment, and the measurement point should be at least 75 mm away from the welding point in each direction before the arc passes. To prevent the steel plate surface from melting, the preheating gun should be kept at a certain height (50 mm) away from the steel plate.

[0264] Infrared thermometers (0–1000℃) are used to measure preheating temperature and interpass temperature before welding. Alternatively, a fusible thermometer can be used to determine the preheating temperature. When measuring temperature, the measurement position should generally be on the opposite side of the object being heated.

[0265] When conditions prevent heating from the reverse side, heating from the front side is also permissible; when using a flame heater for preheating, temperature measurement of the front side should be performed after heating has stopped.

[0266] Preheating parameters are shown in Table 13. For welding steels of different strength grades, the preheating specifications for the joint should be based on the preheating specifications for the steel with the higher strength of the joint.

[0267]

[0268] Welding process parameters and requirements: All steel materials, welding wires, and welding process specifications used must undergo welding process qualification tests before formal welding can begin. Only after the tests are passed can welding be performed according to the corresponding welding specifications.

[0269] Welding process parameters can be found in Table 14.

[0270]

[0271] If the weld cannot be formed in one pass within the specified current, voltage and welding speed range, then multi-layer and multi-pass welding must be used.

[0272] Interpass temperature control: The minimum interpass temperature should not be lower than the minimum preheating temperature for welding of the structural component, and the maximum interpass temperature should not exceed 230℃.

[0273] When performing multi-layer, multi-pass welding, the start and end positions of the arcs should be staggered between layers, and the joint spacing should be no less than 40mm.

[0274] Joints are not allowed at the intersection of structural components, and the transition between intersecting welds must be smooth (if necessary, the previous weld should be ground down before welding the subsequent weld).

[0275] If welding defects (such as porosity, welding cracks, etc.) are found during the welding process, they should be removed and re-welded. It is strictly forbidden to apply the weld directly without any treatment.

[0276] During welding, defects such as cracks and stress are prone to occur at the ends and tails of the weld. Therefore, do not start or end the arc at the ends or corners of the workpiece. When starting or ending the arc, the distance from such locations should be more than 20mm.

[0277] During welding, adjust the position of the components to ensure that the welding posture is flat welding or ship welding.

[0278] Post-weld slag removal: In principle, welds on structural components that do not significantly affect the product's appearance should not be ground. Defects affecting appearance (such as poor joints) can be removed using a flap wheel (polishing disc).

[0279] Welding spatter removal is generally permitted only using a flat chisel or a twisted wire parallel steel wire wheel. Grinding to remove slag must not damage the base material. When grinding is necessary and will damage the base material, the grinding depth should be ≤0.2mm.

[0280] Grinding should not damage the base material. All key welds should have their radius (R) treated by grinding. Grind until there are no black edges on the corners. The weld bead should be uniform after grinding (especially at the hinge point ear plate position).

[0281] All protruding welds are ground until they are flush with the base material, so that the weld transitions smoothly.

[0282] The grinding of weld seams should be no less than 0.2mm and no more than 0.5mm above the base metal.

[0283] Flame correction: Adjust the flame to a neutral flame. The flame structure can be divided into three parts: the flame core, the inner flame, and the outer flame.

[0284] When using flame straightening, it is strictly forbidden to repeatedly heat the same part to prevent changes in the metallographic structure and mechanical properties of the steel. When flame straightening deformation requires repeated heating or multiple heating, the next heating should be carried out after the previous heating has completely cooled down. The number of repeated heatings for high-strength steel should not exceed 2.

[0285] For tanks made of low-alloy high-strength steel such as Q355B, the maximum heating temperature is not allowed to exceed 650℃. Temperature detection equipment can be selected from infrared thermometers (0~1000℃) or determined according to the color of steel, see Table 15.

[0286]

[0287] After straightening, the steel surface must be free of cracks, molten pits, and other defects that affect strength and appearance. Direct heating and hammering are not allowed on the weld. The heating area should be 30mm to 50mm away from the weld of the splicing ring of the tank body. Hot work is prohibited in the pressurized area.

[0288] Welding inspection: General requirements: Inspectors shall inspect welded structural components according to this standard, drawings, and processes. Inspection generally only covers geometric shape, dimensional position, and visual defects. Welded structural components shall be submitted to a dedicated inspector for acceptance after passing self-inspection.

[0289] Inspection methods: Use length measuring tools or templates to inspect the geometric shape and positional dimensions; if necessary, use a scribing instrument or portable measuring instrument for inspection. Inspect the weld's dimensional deviations and external defects with the naked eye or a low-magnification magnifying glass; if necessary, use magnetic particle testing, dye penetrant testing, etc. Use ultrasonic testing to inspect internal weld defects. When ultrasonic testing is difficult for some workpieces (e.g., when the thickness is less than 8mm), dye penetrant testing (PT) can be used as an alternative.

[0290] Inspection Rules: Critical welds [A] shall be inspected 100% of each piece for weld surface, geometry, and dimensional accuracy. Important welds [B] or ordinary welds shall be subject to random sampling inspection for weld surface, geometry, and dimensional accuracy. Trial production and production preparation shall be 100% inspection. During normal batch production, the sampling quantity shall not be less than 20% to 30% of the monthly output. If any welds fail the sampling inspection, the sampling shall be doubled. If any welds still fail the sampling inspection, each piece shall be inspected.

[0291] Visual quality inspection: The weld should be aesthetically pleasing, with consistent width and height, and a good joint. The weld cross-section should not have obvious abrupt changes, the weld edges should be straight and uniform, and the transition between the weld and the base metal should be smooth.

[0292] Weld quality is classified into three grades: Strict (B), Medium (C), and General (D). Specific weld surface defects should conform to the provisions of GB / T19418 "Guideline for Quality Classification of Defects in Arc Welded Joints of Steel".

[0293] The weld leg size should be equal to or greater than the weld design size (i.e., 1 to 1.25K is allowed, where K is the weld design size). Unspecified weld leg sizes must not be less than the minimum plate thickness. However, weld leg sizes for welds that are prone to assembly interference zones within the cavity and are not primary load-bearing welds may be slightly less than or equal to the weld design size (i.e., 0.9 to 1K is allowed, but this must be clearly stated in the process documentation). Welded workpieces undergoing flaw detection should be inspected 24 hours after sufficient cooling, and the results should be used as the basis for weld acceptance.

[0294] Figure 10 This is a flowchart of the conventional mast manufacturing process in this invention. (For example...) Figure 10 As shown, the conventional mast production process includes: AGV material arrival → automatic side panel welding → manual guide rail assembly → automatic side panel and guide rail assembly (robot point-to-point alignment) → RGV conveying → manual front wall panel assembly → primary automatic tank assembly (robot point-to-point alignment) → internal hidden weld welding → RGV conveying → secondary manual tank assembly and repair welding (secondary plates, etc.) → RGV conveying → automatic internal weld welding (robot) → manual cover plate assembly and repair welding → RGV conveying → automatic external weld welding (robot) → prefabrication of small parts → welding of small components and manual repair welding → grinding → RGV conveying → shaping and inspection (automatic inspection + manual correction) → off-line production.

[0295] Specifically, each of the multiple AGVs transports side plates 1 to the first receiving area 25 of the first welding equipment 20, transports guide rails 2 to the second receiving area 37 of the second welding equipment 30, transports front wall panels 3 to the third receiving area 38 of the second welding equipment 30, transports end flange plates 4 and partitions 5 to the fourth receiving area 44 of the first tank welding equipment 40, transports second-layer plates 6 to the fifth receiving area 55 of the second tank welding equipment 50, transports cover plates 7 to the sixth receiving area 64 of the third welding equipment 60, and transports small parts (accessories) to the receiving area of ​​the accessory welding equipment 70.

[0296] Automatic side panel assembly welding: Since the mast is long, a single side panel 1 is not long enough. Therefore, the first assembly welding equipment 20 welds multiple side panels 1 together to a preset length. Then, the first roller conveyor 22 transports the side panels 1 welded to the preset length to the second assembly welding equipment 30.

[0297] Manual assembly of guide rails, manual assembly of front wall panels, and automatic assembly of side panel guide rails: Due to the long length of the central mast, a single front wall panel 3 and a single guide rail 2 are not long enough. Therefore, the second welding equipment 30 welds multiple guide rails 2 together to a preset length, and welds multiple front wall panels 3 together to a preset length; the guide rails 2 welded to the preset length are then welded together with the side panels 1 welded to the preset length. Then, the second roller conveyor 32 transports the side panel guide rail assembly and the front wall panels 3 welded to the preset length to the first tank assembly welding equipment 40.

[0298] Side panel guide rail assembly process: Ensure the outer surface of the side panel is facing upwards, and draw the guide rail positioning line using a chalk line method at a distance of 15mm from the lower surface of the side panel; manually use an overhead crane to hoist the side panel assembly onto the side panel assembly fixture, and then hoist the guide rail assembly onto the side panel; adjust the relative position of the side panel and the guide rail so that the lower surface of the guide rail is aligned with the white line, measure the distance between the lower surface of the guide rail and the lower surface of the side panel at several points, ensuring that the assembly dimension error does not exceed ±1mm, and tightly fit the outer side of the side panel with the guide rail, with a side panel guide rail mating gap ≤1.5mm and a guide rail straightness ≤3mm along its entire length.

[0299] Front wall panel assembly process: The front wall panels are hoisted onto the front wall panel assembly fixture one by one by the operator using a crane; the front wall panels are pushed towards the positioning stop by the operator, and the relative positions of the front wall panels are adjusted so that the outer sides of the front wall panels are kept on the same horizontal plane and close to the positioning stop. The gap between each pair of front wall panels is ≤1.5mm, and the misalignment is ensured to be ≤1mm.

[0300] The tank body is automatically assembled and internally concealed welded in one go: The first tank body assembly welding equipment 40 initially welds the side plates 1 to the left and right sides of the front wall plate 3 to form the mast trough. Then, starting from the middle of the mast trough and moving towards both ends, multiple partition plates 5 are initially welded to the mast trough at intervals. Finally, two end flange plates 4 are welded to the opposite ends of the mast trough. Optionally, specifically, the first internal weld group (internal concealed weld) of the mast trough is welded sequentially from the middle of the mast trough towards both ends. The first internal weld group includes the internal weld between the partition plate 5 and the front wall plate 3, the internal weld between the partition plate 5 and the side plate 1, the internal weld between the side plate 1 and the front wall plate 3, the internal weld between the end flange plate 4 and the side plate 1, and the internal weld between the end flange plate 4 and the front wall plate 3. The first internal weld group can be welded directly on the first tank body assembly welding equipment 40. Alternatively, for better welding quality, it can be transported to the internal weld welding equipment 100 for welding.

[0301] The specific process of the first assembly of the tank body is as follows: The roller conveyor line is started, transferring the front wall panel to the first tank assembly fixture; the left / right side panel guide rail assemblies are transported to the roller conveyor line and transferred to the first tank assembly fixture; the assembly fixture absorbs the left side panel assembly and pushes it into place with the front wall panel to form a double-sided shape, with an assembly gap ≤ 1.5mm and an assembly dimensional error not exceeding ±1mm. A welding robot performs positioning. A robotic arm picks up the top plate and front wall panel and positions them at the corresponding ends of the first tank assembly fixture. Following the drawing requirements, lines are drawn step-by-step from left to right, marking the positioning lines for the partitions and stiffeners, with a marking error ≤ ±1mm; two robotic arms assemble the partitions, side panels, and front wall panels respectively, and the welding robot positions them, with an assembly gap ≤ 1.5mm, verticality ≤ 1mm, and an assembly dimensional error not exceeding ±1mm. The error between the marked position and the robotic arm assembly position is manually checked. If the error does not exceed 1mm after two or more verifications in batch production, the subsequent marking and checking processes are cancelled. Assemble the tooling to adsorb the right side panel assembly and push it into a three-sided formed shape. The assembly gap should be ≤1.5mm, the width error of the inner trough should not exceed ±1mm, the distance error between the left and right guide rails should be ±1mm, and the assembly dimensional error should not exceed ±1mm. Assemble the tooling to adsorb the top plate and front wall plate and push them into the trough body. The assembly gap should be ≤1.5mm, and the assembly dimensional error should not exceed ±1mm. Check the alignment of the end plate and guide rails to ensure they are aligned. When welding the first inner weld group: First, weld the inner weld between the partition plate 5 and the side plate 1 sequentially from the middle of the mast slot towards both ends. Each welding gun welds the inner welds on both sides of the same slot sequentially, and welds from the front wall plate 3 towards the end away from the front wall plate 3. For example, the inner weld between the partition plate 5 and the side plate 1 is a vertical weld with a length of 100mm from the bottom upwards. Then, weld the inner weld between the side plate 1 and the front wall plate 3 sequentially from the middle of the mast slot towards both ends. Each welding gun welds the inner welds on both sides of the same slot sequentially. For example, the inner weld between the side plate 1 and the front wall plate 3 is a fillet weld with a welding length of 100mm (100mm) intermittently. Next, weld the inner weld between the partition plate 5 and the front wall plate 3 sequentially from the middle of the mast slot towards both ends. For example, the inner weld between the partition plate 5 and the front wall plate 3 is a fillet weld with a welding length of 100mm (100mm) intermittently.

[0302] Secondary manual assembly of the tank body: The second tank body welding equipment 50 sequentially welds multiple second-layer plates 6 between the partition plate 5 and the side plate 1 from the middle of the mast tank body towards both ends. The internal vertical plates of the second-layer plates are then welded to the front wall plate according to the drawing positions. On the upper mast body, a crane is used to manually hoist the second-layer plates into the tank body, with an assembly gap ≤ 1.5mm.

[0303] Automatic welding of inner welds: The inner weld welding equipment 100 welds the second inner weld group of the mast groove body from the middle to both ends in sequence. The second inner weld group includes the inner weld between the second layer plate 6 and the side plate 1, the inner weld between the second layer plate 6 and the partition plate 5, the inner weld between the partition plate 5 and the side plate 1, and the inner weld between the end flange plate 4 and the front wall plate 3.

[0304] When welding the second inner weld group: For example... Figure 11 As shown by the arrow in Figure a, first, starting from the middle of the mast slot and moving towards both ends, weld the inner seam between the second-layer plate 6 and the partition plate 5 sequentially (e.g., full weld); then, starting from the middle of the mast slot and moving towards both ends, weld the inner seam between the second-layer plate 6 and the side plate 1 sequentially (e.g., full weld), followed by welding the plug weld of the second-layer plate. Figure 11 As shown by the arrow in Figure b, rotate the mast slot 90°, and then weld the inner weld between one side of the partition 5 and the side plate 1 sequentially from the middle of the mast slot towards both ends (for example, intermittent weld 100 (100)); Figure 11 As shown by the arrow in Figure C, the mast slot is rotated 180°, and then the inner weld between the other side of the partition 5 and the side plate 1 is welded sequentially from the middle of the mast slot toward both ends (for example, intermittent weld 100 (100)).

[0305] Manual assembly and welding of the cover plate: The third welding equipment 60 initially welds the cover plate 7 onto the mast trough to form the mast body. The cover plate 7 and the front wall plate 3 are located on opposite sides of the mast body. Specifically, the opening size of the trough is measured, and the upper edge of the side plate is visually inspected for sharp bends. If the opening size differs from the theoretical size by more than 2mm or there are sharp bends, process supports are used for adjustment. For welds that the robot cannot weld, manual welding is performed. Then, a crane is used to assemble the remaining stiffening plates and wire frames inside the trough with the trough body. The assembly gap is ≤1.5mm, and the assembly size error does not exceed ±1mm. The crane is used to hoist the turntable component cover plate onto the auxiliary work platform (with tooling) for assembly. The assembly gap is ≤1.5mm, the assembly size error does not exceed ±1mm, the verticality is ≤1mm, and the coaxiality is ≤1mm.

[0306] Automatic welding of external welds: The external weld welding equipment 110 welds the external weld groups of the mast body. The external weld groups include the external welds between the side plate 1 and the front wall plate 3, the external welds between the side plate 1 and the cover plate 7, and the external welds between the end flange plate 4 and the front wall plate 3, the side plate 1, and the cover plate 7, respectively. Optionally, the mast body has a first segment, a second segment, a third segment, and a fourth segment in sequence from one end to the other. The external weld groups in the first and third segments are welded first, and then the external weld groups in the second and fourth segments are welded.

[0307] Specifically, such as Figure 12As shown by the arrow in Figure a, the outer weld between side plate 1 and cover plate 7 is welded first, and the outer weld between the lower side of guide rail 2 and side plate 1 is welded for the first time; as shown in Figure a. Figure 12 As shown by the arrow in Figure b, the mast body is then rotated 180°, and the outer weld between the upper side of guide rail 2 and side plate 1 is welded for the first time; as shown in Figure b. Figure 12 As shown by the arrow in Figure C, the mast body is then rotated 180°, and a second weld is performed on the outer weld between the lower side of guide rail 2 and side plate 1; as shown... Figure 12 As shown by the arrow in Figure d, the mast body is then rotated 180°, and the outer weld between the upper side of the guide rail 2 and the side plate 1 is welded a second time. Specifically, when welding the outer welds between the side plate 1 and the cover plate 7, the lower side of the guide rail 2 and the side plate 1, and the upper side of the guide rail 2 and the side plate 1, segmented welding is used. That is, the outer weld groups in the first and third segments are welded first, and then the outer weld groups in the second and fourth segments are welded.

[0308] Small component assembly welding and manual repair welding: The auxiliary component assembly welding equipment 70 performs assembly welding of small components to the mast body, manual repair welding of external weld seams, and weld seam removal of cover plate and partition plate.

[0309] Prefabrication of small parts: Place the small parts on the auxiliary work platform and use auxiliary tooling to assemble the small parts. The assembly gap should be ≤1.5mm and the assembly size deviation should be ±1mm. For prefabricated small parts that are processed after welding, a 5mm machining allowance should be reserved in advance.

[0310] Small part assembly welding: Mark lines according to the drawing requirements, with a marking dimension deviation of ≤1.5mm, and use auxiliary tooling to position some hinge points; assemble the small parts with the main body of the mast, with an assembly gap of ≤1.5mm, an assembly dimension deviation of ±1mm, and a symmetry of ≤2mm; for locations with machining allowance, verify whether a machining allowance of 4-5mm has been left.

[0311] Quality control points for small parts assembly station: assembly gap 0~1.5mm, scribing dimension deviation 0~1.5mm, assembly dimension deviation ±1mm, symmetry deviation 0~2mm; post-weld machining allowance not less than 4mm.

[0312] Finally, the weld is ground by grinding equipment 130. After grinding, the mast is inspected and straightened by inspection and straightening equipment 140.

[0313] Weld grinding: After the weld has cooled, grind the weld until it is flush with the base material, with some areas protruding less than 0.5mm from the base material surface and recessed 0.5mm from the base material; the grinding range shall not exceed 30mm on one side of the fusion line between the weld surface and the base material.

[0314] Post-weld straightening: Using the straight line as the inspection benchmark, check the straightness of the bottom and sides of the mast, measure and mark the high points, manually hoist and assemble the assembly blocks to press down the straightening points at various locations on the mast; use the outer flame of a flame to quickly heat the surface of the mast, and at the same time use a temperature gun (measuring range not less than 400-1000 degrees) to measure the temperature of the steel plate at the heating point or observe the color of the steel plate to ensure that the temperature does not exceed the maximum allowable temperature (650°). After heating to a suitable temperature, use compressed air to cool the straightening points to shorten the straightening cooling time; try not to heat the same position repeatedly. When flame straightening requires repeated heating or multiple heating, the next heating should be carried out after the previous heating has completely cooled down.

[0315] Figure 13 This is a flowchart of the unconventional mast manufacturing process in this invention. The difference between this flowchart and the conventional mast manufacturing process is as follows: Figure 13 As shown, in the manual welding area 90, multiple side plates 1 are welded together to a preset length by manual welding, and then transported to the second roller conveyor line 32 of the second welding equipment 30 by RGV for subsequent welding operations.

[0316] Since the upper / lower masts are shorter than the middle mast, it is not necessary to weld the multiple side plates 1, multiple guide rails 2, and multiple front wall plates 3 together first. Figure 14 This is a flowchart of the conventional upper / lower mast production process in this invention. The difference from the middle mast production process is as follows: Figure 14 As shown, the process is as follows: automatic assembly of the mast body (i.e., side plate 1, front wall plate 3, and partition plate 5 are welded together to form the mast body) → manual assembly of the second layer plate (i.e., welding the second layer plate into the mast body) → RGV conveying → two internal weld seams → manual assembly of the cover plate / guide rail (i.e., after the cover plate 7 is initially welded into the mast body, the guide rail 2 is welded to the left and right sides of the mast body) → RGV conveying → external weld seam welding → small part prefabrication → small part assembly welding → grinding → RGV conveying → inspection and shaping → machining → painting.

[0317] When welding the inner weld seam, such as Figure 15 As shown, the inner welds in each slot are welded sequentially from the middle of the mast slot towards both ends. First, the inner weld between the second-layer plate 6 and the partition plate 5 is welded, then the inner weld between the second-layer plate 6 and the side plate 1 is welded. (See diagram) Figure 16 As shown, the inner weld between the partition plate 5 and the side plate 1 is welded sequentially from the middle of the mast slot towards both ends. Each welding gun welds the inner welds on the left and right sides of the same slot in sequence, and the welding is carried out from the front wall plate 3 towards the end away from the front wall plate 3.

[0318] When welding the outer weld between side plate 1 and cover plate 7, such as Figure 17As shown, the mast body has a first region and a second region. First, the outer weld between the side plate 1 and the cover plate 7 in the first region is circumferentially welded; then, the outer weld between the side plate 1 and the cover plate 7 in the second region is circumferentially welded.

[0319] When welding the outer weld between side plate 1 and guide rail 2, such as Figure 18 As shown, first, ship welding is performed on the outer weld between the lower side of one of the guide rails 2 and the side plate 1; then, the mast body posture is adjusted, and ship welding is performed on the outer weld between the lower side of the other guide rail 2 and the side plate 1; next, the mast body posture is adjusted, and ship welding is performed on the outer weld between the upper side of one of the guide rails 2 and the side plate 1; then, the mast body posture is adjusted, and ship welding is performed on the outer weld between the upper side of the other guide rail 2 and the side plate 1.

[0320] Figure 19 This is a flowchart of the unconventional upper / lower mast manufacturing process in this invention. The difference from the conventional upper / lower mast manufacturing process is as follows: Figure 19 As shown, the side plate 1, the front wall plate 3, and the partition plate 5 are welded together to form the mast groove by manual welding.

[0321] Solutions for replacing manual labor in certain processes: Description: In the assembly stage, all marking, hoisting, and adjustments were done manually, using simple tools such as jacks and C-clamps for fixing. In the welding stage, all welding was done manually using gas shielded welding or shielded metal arc welding.

[0322] Analysis: This solution has low equipment investment and good flexibility, making it suitable for single-piece, small-batch, or maintenance applications. However, it has significant drawbacks: assembly accuracy and efficiency depend entirely on the skill level of the workers, resulting in large quality fluctuations; welding is physically demanding and takes place in harsh environments, making it difficult to guarantee stable quality for long and concealed welds; the overall production cycle is long, and safety risks are high.

[0323] Alternatives to different welding methods: Explanation: For some non-critical welds, submerged arc welding (SAW) can be used to improve deposition efficiency, or flux-cored wire gas shielded welding (FCAW-G) can be used to enhance adaptability to assembly gaps.

[0324] Analysis: Submerged arc welding is suitable for long, straight, flat welds, offering high efficiency and good weld formation, but it is not suitable for short, complex welds and fillet welds on masts. Flux-cored welding has relatively lower requirements for bevel cleaning, but it is more expensive and produces more fumes. The solid wire GMAW welding selected in this invention achieves the best balance in terms of efficiency, cost, adaptability, and automation integration.

[0325] Alternative testing methods: Explanation: For workpieces that are too thin (<8mm) to be effectively ultrasonically tested, dye penetrant testing (PT) can be used as an alternative method to check for surface opening defects.

[0326] Analysis: Dye dye penetrant testing is simple to operate and low in cost, but it requires a high level of operator skill and can only detect surface defects, unlike ultrasonic testing (UT) which can detect internal defects. Therefore, this invention specifies that physical dye penetrant testing (PT) can be used as a substitute when UT is difficult, but UT is still the preferred method for core load-bearing welds.

[0327] The advantages of the mast manufacturing process in this application are: Value: Significantly improves production efficiency, enabling mass and standardized production; significantly improves product quality consistency and reliability through automated equipment and refined processes; reduces reliance on highly skilled welders and minimizes safety risks associated with manual operation.

[0328] Effectiveness of the measures: Highly effective. The assembly tooling and robotic welding fundamentally ensured the stability of critical dimensions and weld quality; detailed process parameters and inspection standards made the process controllable and the results measurable.

[0329] Innovation: It deeply integrates automated assembly, robotic welding, process-oriented production with mast manufacturing, and has formed a complete enterprise standard system, which is advanced in the field of engineering machinery structural component manufacturing.

[0330] Difficulty level: The implementation difficulty is moderate to high, involving investment in automated equipment and production line transformation, but once built, the operation is standardized and easy to maintain and promote.

[0331] Application scope: This process method is not only applicable to rotary drilling rig masts, but can also be extended to the welding production of similar large box-shaped structural components for other engineering machinery.

[0332] Results: According to the company's standards, this process has been applied to actual production, realizing the transformation of mast manufacturing from "experience-based" to "standardized and automated". Product quality is stable, production efficiency is improved, and safety hazards are effectively controlled.

[0333] In this document, the directional terms such as up, down, left, right, front, and back are defined according to the position of the structures in the accompanying drawings and the relative positions of the structures, and are only used for clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second," etc., used herein are only used for distinction in name and are not used to limit the number or order.

[0334] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content without departing from the scope of the technical solution of the present invention, which are equivalent embodiments with equivalent changes. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A mast assembly production line, characterized in that, It includes a transport device (10) and a first equipment area and a second equipment area located on opposite sides of the transport device (10), both of which extend along the transport direction of the transport device (10). The mast assembly production line includes multiple welding equipment, an inner weld welding equipment (100), an outer weld welding equipment (110), and an inspection and correction equipment (140). The multiple welding equipment, the inner weld welding equipment (100), the outer weld welding equipment (110), and the inspection and correction equipment (140) are each located in the first equipment area or the second equipment area. The assembly and welding equipment is used for assembling and welding various components of the mast. The inner weld welding equipment (100) is used for welding the inner weld of the mast. The outer weld welding equipment (110) is used for welding the outer weld of the mast. The inspection and straightening equipment (140) is used for inspecting the mast and correcting its deformation.

2. The mast assembly production line according to claim 1, characterized in that, Both the inner weld welding equipment (100) and the outer weld welding equipment (110) include a displacement clamp device (111), a support mechanism (112), and a ceiling rail welding device (113). The welding arm of the ceiling rail welding device (113) is located above the support mechanism (112). The displacement clamp device (111) is located on the support mechanism (112). The support mechanism (112) is used to support the mast slot. The displacement clamp device (111) is used to clamp the mast slot and change the placement angle of the mast slot. The ceiling rail welding device (113) is used to weld the weld seam of the mast slot.

3. The mast assembly production line according to claim 1, characterized in that, The plurality of welding devices include a first welding device (20), a second welding device (30), and a first tank welding device (40). The first welding device (20), the second welding device (30), and the first tank welding device (40) are located on the same side of the transport device (10) and are arranged sequentially along the transport direction of the transport device (10). The first welding equipment (20) is used for welding between multiple side plates (1), the second welding equipment (30) is used for welding between multiple guide rails (2), between multiple front wall plates (3), and between the guide rails (2) and the side plates (1); the first tank welding equipment (40) is used for welding between the front wall plate (3) and the side plate (1), between the front wall plate (3) and the side plate (1) and the end flange plate (4), and between the front wall plate (3) and the side plate (1) and the partition plate (5).

4. The mast assembly production line according to claim 3, characterized in that, The first welding equipment (20) includes a gantry manipulator (21), a first roller conveyor line (22), a side plate assembly fixture (23), and a side plate welding workstation (24). The gantry manipulator (21) is located above the first roller conveyor line (22) and is used to transfer the side plate (1) onto the first roller conveyor line (22). The first roller conveyor line (22) is used to transport the side plate (1) to the side plate assembly fixture (23) for assembly and to transport the welded side plate (1) to the second welding equipment (30). The side plate welding workstation (24) is used to weld the assembled side plates (1) together. The second welding equipment (30) includes a transverse mechanism (31), a second roller conveyor line (32), a guide rail assembly fixture (33), a front wall panel assembly fixture (34), a side panel guide rail assembly fixture (35), and a guide rail side panel spot welding workstation (36). The second roller conveyor line (32) cooperates with the first roller conveyor line (22) and receives the material from the first roller conveyor line (22). The transverse mechanism (31) is located above the second roller conveyor line (32), the front wall panel assembly fixture (34), and the side panel guide rail assembly fixture (35). The transverse mechanism (31) is used to transfer the side panel (1) to the side panel guide rail assembly fixture. The assembly (35) is used to assemble the guide rail (2), transfer the welded side plate guide rail assembly to the second roller conveyor line (32), and transfer the front wall plate (3) to the second roller conveyor line (32). The guide rail assembly tool (33) is used to straighten and assemble the guide rail (2). The front wall plate assembly tool (34) is used to straighten and assemble the front wall plate (3). The side plate guide rail assembly tool (35) is used to assemble the guide rail (2) and the side plate (1). The guide rail side plate spot welding workstation (36) is used to weld the guide rail (2) and the side plate (1) on the side plate guide rail assembly tool (35). The first tank assembly welding equipment (40) includes a first tank assembly tooling (41), a first tank assembly welding workstation (42), and a third roller conveyor line (43). The first tank assembly welding workstation (42) and the third roller conveyor line (43) are located on opposite sides of the first tank assembly tooling (41). The third roller conveyor line (43) cooperates with the second roller conveyor line (32) and receives the material from the second roller conveyor line (32). The first tank assembly tooling (41) is used for the first... The assembly of the wall panel (3) with the side panel (1), the front wall panel (3) and the side panel (1) with the end flange plate (4), and the front wall panel (3) and the side panel (1) with the partition plate (5) are performed. The first tank assembly welding station (42) is used for welding the front wall panel (3) with the side panel (1), the front wall panel (3) and the side panel (1) with the end flange plate (4), and the front wall panel (3) and the side panel (1) with the partition plate (5).

5. The mast assembly production line according to claim 3, characterized in that, The plurality of welding devices also includes a second tank welding device (50), which is located on the same side of the transport device (10) as the first tank welding device (40) and is located at the end of the first tank welding device (40) away from the second welding device (30). The second tank welding device (50) is used for welding the side plate (1) and the partition plate (5) to the second layer plate (6). The second tank assembly welding equipment (50) includes a second tank assembly welding fixture (51), a transverse unloading mechanism (52), and a fourth roller conveyor line (53). The fourth roller conveyor line (53) is integrated on the second tank assembly welding fixture (51). The second tank assembly welding fixture (51) is used for the assembly and welding of the side plate (1) and the partition plate (5) with the second layer plate (6). The transverse unloading mechanism (52) is used to transfer the mast tank after assembly welding to the transport equipment (10).

6. The mast assembly production line according to claim 3, characterized in that, The plurality of welding devices also include a third welding device (60) and an auxiliary welding device (70). The third welding device (60) and the auxiliary welding device (70) are both located on the same side of the transport device (10) as the first tank welding device (40). The third welding device (60) is located at the end of the first tank welding device (40) away from the second welding device (30), and the auxiliary welding device (70) is located at the end of the third welding device (60) away from the first tank welding device (40). The third welding equipment (60) is used for welding between multiple cover plates (7), between the side plate (1) and the end flange plate (4) and the cover plate (7), and the accessory welding equipment (70) is used for welding between the accessory and the mast body.

7. The mast assembly production line according to claim 3, characterized in that, The mast assembly production line also includes a manual welding area (90), an equipment reserved area (120), and a lower part buffer area (80). The manual welding area (90), the equipment reserved area (120), and the lower part buffer area (80) are each located in the first equipment area or the second equipment area. The manual welding area (90) is located on the other side of the transport equipment (10) relative to the first welding equipment (20) and close to the head end of the transport equipment (10). The equipment reserved area (120), the inner weld welding equipment (100), and the outer weld welding equipment (110) are located on the same side of the transport equipment (10) and arranged side by side. The lower part buffer area (80) is located on the other side of the transport equipment (10) relative to the inspection and straightening equipment (140) and close to the tail end of the transport equipment (10). The manual assembly welding area (90) is used for the manual assembly and welding of the mast slot body. The equipment reserved area (120) is used to add the assembly welding equipment, the inner weld welding equipment (100) or the outer weld welding equipment (110). The unloading buffer area (80) is used for unloading the mast and temporarily storing it.

8. The mast assembly production line according to claim 1, characterized in that, The mast assembly line also includes a grinding device (130), which is located in the first equipment area or the second equipment area. The grinding device (130) and the inspection and straightening device (140) are located on the same side of the transport equipment (10). The grinding device (130) is used to grind the welds on the mast.

9. A method for manufacturing a mast, characterized in that, For a mast assembly production line as described in any one of claims 1-8, the mast manufacturing method comprises: Provide the various components of the mast and transport them to the corresponding assembly and welding equipment for assembly and welding; The transport equipment (10) transports the assembled mast trough to the inner weld welding equipment (100) for inner weld welding and transports the assembled mast to the inner and outer weld welding equipment (110) for outer weld welding. The transport equipment (10) transports the completed mast to the inspection and straightening equipment (140) for inspection and deformation correction.

10. The mast manufacturing method according to claim 9, characterized in that, The mast's various components include multiple side plates (1), multiple guide rails (2), multiple front wall plates (3), two end flange plates (4), multiple partitions (5), multiple second-layer plates (6), and multiple cover plates (7). The mast manufacturing method includes: The multiple side plates (1) are welded together to a predetermined length; Multiple guide rails (2) are welded together to a predetermined length and then welded together with the side plate (1). Multiple front wall panels (3) are welded together to a predetermined length and then welded together with the side panels (1) to form a mast groove. The end flange plate (4) is welded to both ends of the mast slot; Multiple partitions (5) are welded at intervals into the mast slot, and the second layer plate (6) is welded between the partitions (5) and the side plate (1); Multiple cover plates (7) are welded together to a predetermined length and then welded together with the mast groove to form the mast body.

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