A power transmission line tower base automatic welding device
By designing an automated welding device for transmission line tower bases, the problems of unstable welding quality and low efficiency have been solved, achieving efficient and precise automated welding and improving the overall structural safety and service life of transmission line towers.
Patent Information
- Application Number
- CN202610492390.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-15
- Publication Date
- 2026-06-09
Smart Images
Figure CN122165124A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of welding equipment technology, specifically to an automatic welding device for the base of a power transmission line tower. Background Technology
[0002] The cross-shaped corner plates in the base of transmission line towers are key load-bearing components connecting the tower body and the foundation, and their welding quality directly affects the overall structural safety and service life of the tower. Currently, the welding of these corner plates is mostly carried out manually or semi-automatically. In traditional operations, operators first need to manually assemble and temporarily spot weld the four fins, a process that makes it difficult to ensure precise alignment and centering of the four joints, easily introducing initial assembly errors. Subsequently, the spot-welded workpieces need to be flipped over for further welding, a process that is not only labor-intensive but also prone to deformation or misalignment of the spot-welded joints due to hoisting or handling. During the welding stage, welding is usually performed multiple times, one weld at a time. Because the welding sequence, speed, and angle are difficult to maintain completely consistently, problems such as uneven welding deformation, stress concentration, and differences in weld quality are easily caused. The entire process is highly dependent on the skills and experience of the operators, resulting in low production efficiency and difficulty in guaranteeing quality stability. Therefore, we propose an automatic welding device for transmission line tower bases to solve the above problems. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of the prior art by proposing an automatic welding device for transmission line tower bases, which is a special device for achieving automated clamping, precise positioning, smooth rotation and high-quality synchronous welding, thereby overcoming the deficiencies of the prior art.
[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an automatic welding device for transmission line tower bases, used for welding cross-shaped tower base corner plates, including a base plate, a rectangular frame-shaped tilting guide platform installed on the upper end of the base plate; a controller installed on one end of the base plate; a tilting cylinder vertically installed in the middle of the narrow side of one end of the tilting guide platform, the inner end of the piston rod of the tilting cylinder extending into the inner frame of the tilting guide platform and fixedly connected to a tilting drag member, the tilting drag member sliding along the long side in the tilting guide platform; a rotating 90-degree rotating part is rotatably installed on the tilting guide platform on the side of the tilting drag member away from the tilting cylinder. A rotating bracket with a rotation angle; a clamping plate is fixedly installed at the long arm end of the rotating bracket; a control panel is rotatably attached to the side wall of the clamping plate connected to the rotating bracket; a drive frame is fixedly installed at the end of the clamping plate away from the rotating bracket; four directional clamps are arranged in a ring on the side of the clamping plate away from the control panel, all of which face the center of the clamping plate; an end bracket perpendicular to the clamping plate is provided between every two adjacent directional clamps; a tower base corner plate is clamped and fixed between the directional clamps and the end bracket, and the center of the tower base corner plate is consistent with the center of the clamping plate. The drive frame is equipped with a drive assembly, which drives the control panel to rotate and control the four directional clamps to fix and hold the tower base corner plate. The flipping tow piece is equipped with a flipping assembly, which is used to switch the angle of the flipping support between 0 degrees and 90 degrees during the movement of the flipping tow piece driven by the flipping cylinder. The upper end of the flipping tow piece is also equipped with a welding bracket on the side biased towards the flipping cylinder. The welding bracket is equipped with a welding assembly, which is used to simultaneously weld the four edge seams of the tower base corner plate in the clamping state when the clamping plate is in the 90-degree state. The flipping guide platform between the flipping tow piece and the flipping support is also equipped with a positioning frame.
[0005] Furthermore, a flip support is provided at the position corresponding to the flip bracket on the flip guide platform. The right-angle end of the flip bracket is rotatably mounted on the flip support via a rotating shaft. A support block is fixed at the end of the flip support away from the flip drag. When the flip bracket drives the clamp plate to a vertical state, the bottom of the short arm of the flip bracket is supported on the upper end of the support block.
[0006] Furthermore, the flipping assembly includes a lower connecting rod, a stop block, a top spring, an upper connecting rod, a middle connecting block, and a clamping bolt. The lower end of the lower connecting rod is rotatably connected to one end of the flipping drag member. The other end of the lower connecting rod is fixedly provided with two spaced stop blocks. The middle connecting block is slidably mounted on the lower connecting rod between the two stop blocks. The top spring is mounted on the lower connecting rod between the middle connecting block and the end stop block. The upper end of the middle connecting block is vertically fixedly connected to the upper connecting rod away from the lower connecting rod. A clamping bolt is also vertically screwed onto the middle connecting block. The inner end of the clamping bolt is used to clamp and fix the upper connecting rod. The upper end of the upper connecting rod is rotatably connected to the middle of the long arm of the flipping bracket.
[0007] Furthermore, the flipping assembly also includes a guide plate, a guide groove, and an extension rod. There are two guide plates. One end of the guide plate is fixedly connected to the side wall of the flipping drag near the positioning frame. The guide plate is tangent to the inner frame side wall of the flipping guide table. The other end of the guide plate is vertically connected to the extension rod in the middle. The extension rod is vertically slidably inserted into the support block. The two guide plates have guide grooves on their opposite side walls. The guide grooves are composed of a horizontal section and an upward inclined bending section. The upward inclined bending section is located at the end near the extension rod.
[0008] Furthermore, a square-shaped operating opening is provided in the middle of the clamping plate base, and the fin weld of the tower base corner plate is exposed in the operating opening. A circular clamping platform is provided around the operating opening, with the clamping platform facing the side where the control panel is located. The control panel rotates and is clamped onto the clamping platform. The clamping plate base has directional slots along the diameter distribution direction of the clamping plate base, corresponding to the position of the directional clamp.
[0009] Furthermore, the welding assembly includes a welding cylinder, a welding block, a welding guide tube, welding arms, welding heads, connecting pipes, and a supporting crossbar. The welding cylinder is vertically fixedly installed on the upper end of the welding bracket, with the welding cylinder located on the side of the welding bracket away from the flipping support. The piston rod of the welding cylinder passes through the welding bracket and is vertically fixedly connected to the welding block. Four welding arms arranged in a cross shape are fixedly installed on the upper end of the welding block, vertically facing the flipping support. Each welding arm is an isosceles trapezoidal structure, narrow at the inner end and wide at the outer end. Each welding arm has a welding head at its end, facing towards the center. The outer surface of the welding head extends along the surface of the welding arm towards the welding connector. A connecting pipe is provided on one side of the block, and a welding guide is vertically provided at the end of the welding block away from the welding support arm. The welding guide is parallel to the welding cylinder and is connected to the external welding equipment. The inner end of the welding guide is connected to the connecting pipe. A support crossbar is horizontally fixed at the bottom of the welding bracket away from the flipping drag. The two ends of the support crossbar are respectively slidably clamped to the upper two sides of the flipping guide table. When the clamping plate is in a vertical state, the piston rod of the welding cylinder is pushed out, and the welding block drives the welding support arm to pass through the operating port and move along the right-angle joint of the tower base corner plate. The four welding heads simultaneously weld the four side joints at the same speed and angle.
[0010] Furthermore, the control panel has an arc-shaped guide hole that slopes outward from the inside near the edge of the ring. The guide hole corresponds to the position of the directional strip hole. The edge of the control panel has a widened ring bushing. The outer arc surface of the ring bushing, corresponding to the drive frame, has a section of inclined teeth. The drive assembly includes a geared motor and a worm gear. The geared motor is horizontally mounted on the upper end of the drive frame. The worm gear is rotatably mounted in the drive frame. The worm gear meshes with the teeth. When the geared motor is working, it drives the worm gear to rotate, and the worm gear drives the control panel to rotate.
[0011] Furthermore, the directional clamp includes a clamping rod, an end rod, a clamping block, a pad block, a locking plate, and a pull hole. The directional clamp is vertically slidably provided with a clamping rod aligned with the direction of the directional strip hole. One end of the clamping rod is vertically provided with an end rod, which is slidably inserted into the directional strip hole and passes through a guide hole on the other side. The other end of the clamping rod is fixedly connected to a clamping block. The inner side of the clamping block is slidably tangent to the clamping disc seat. The two ends of the clamping block are fixedly connected to pad blocks at a 45-degree angle. The end of the pad block contacts one fin sidewall of the tower base corner plate. A locking plate is vertically fixedly connected to the sidewall of the pad block away from the operating port. The locking plate is always parallel to one sidewall of the end corner support. The end of the locking plate is provided with evenly spaced strip-shaped pull holes. When the control disc rotates, the end rod is squeezed along the directional strip hole through the guide hole, and the clamping rod moves accordingly. The clamping block moves radially along the clamping disc seat to clamp and release the tower base corner plate.
[0012] Further, the end angle support frame includes a support sleeve, a buffer rod, a spring, a support groove and a convex tooth. A support sleeve is sleeved on one end of the end angle support frame close to the operation port. The end of the support sleeve is provided with a U-shaped support groove. One end of the fin of the tower base gusset is clamped in the support groove. Two symmetric buffer rods are vertically arranged in the support sleeve. The buffer rods are vertically and slidably inserted into the end angle support frame. Springs are sleeved on the buffer rods. The springs provide a thrust force to the support sleeve always towards the operation port side, that is, provide a thrust force to the tower base gusset towards the operation port side. Strip-shaped convex teeth with uniform intervals are respectively arranged on the side walls on both sides of the support sleeve. When the lock plate follows the cushion block to clamp and fix the tower base gusset, the pull hole on the lock plate is buckled on the convex teeth to lock the support sleeve and pull it towards the operation port side.
[0013] Further, the positioning frame includes a positioning movable part, a positioning clamping part, a follower pin shaft and a plug rod. A "U"-shaped positioning movable part is vertically slidably installed on the positioning frame. The upper end of the positioning movable part is fixedly provided with a positioning clamping part for positioning and clamping the direct joint of the tower base gusset. The middle part of the lower end of the positioning movable part is vertically provided with a plug rod. The plug rod is vertically and slidably inserted into the positioning frame. Follower pin shafts are respectively vertically arranged at the bottom parts of the left and right ends of the positioning movable part. The follower pin shafts are slidably placed in the guiding grooves. When the flipping cylinder drives the flipping drag part away from the flipping support, the follower pin shafts move along the lower horizontal section of the guiding groove. When moving to the end of the horizontal section, the flipping drag part also drives the flipping support and the fixture disc seat to flip to the horizontal state. Under the action of the top spring and the gravity of the flipping support and its upper components, the middle connecting block always keeps in contact with the lower stop block during this process. Until the flipping support and the fixture disc seat are in the horizontal state, the flipping drag part continues to be dragged outwards. The follower pin shafts move into the upper groove section of the guiding groove. The positioning movable part is lifted upwards accordingly. The positioning clamping part penetrates upwards from the operation port and corresponds to the right-angle joint of the tower base gusset placed on the fixture disc seat, assisting the orientation fixture to accurately butt and fix the tower base gusset. When welding is required, the piston rod of the flipping cylinder is pushed out. The flipping drag part moves towards the flipping support side. The lower connecting rod moves in the middle connecting block during the empty stroke until the top spring is in the natural top-holding state. At the same time, the follower pin shafts also move into the lower horizontal section of the guiding groove. The positioning clamping part drops from the operation port. The flipping drag part continues to move. The flipping support flips to the vertical state. The welding component performs the welding operation.
[0014] Compared with the prior art, the automatic welding device for the tower base of a transmission line tower has the following beneficial effects: Through the integrated mechanical structure and automatic control, the present invention realizes the full-process automatic operation of the cross-shaped tower base gusset from clamping, positioning, flipping to welding and unloading. The whole device is coordinated by the controller, and each actuator is linked in sequence, greatly reducing the dependence on manual operation, improving the standardization and automation level of production operations, thus effectively improving the production efficiency and reducing the labor intensity.
[0015] Specifically, this invention achieves rapid, precise, and secure automatic centering and clamping of workpieces through the precise cooperation of the drive assembly, control panel, and directional fixture mounted on the fixture base. The geared motor drives the control panel to rotate via a worm gear. The arc-shaped guide hole on the control panel pushes the end rod of the directional fixture to move radially, causing the clamping block and pad block to move synchronously, ensuring uniform force application from four directions and precise alignment of the center of the tower base corner plate with the center of the fixture base. Simultaneously, the end bracket provides axial preload under spring action and achieves linkage locking through the engagement of the locking plate and the protruding teeth, forming a comprehensive radial and axial constraint on the workpiece, preventing any loosening or displacement during welding and laying a solid foundation for obtaining high-precision welded joints.
[0016] The flipping and positioning mechanism of this invention is ingeniously designed and highly coordinated. A flipping cylinder drives the movement of the flipping draggage. Through a flipping assembly consisting of a lower connecting rod, a top spring, and an upper connecting rod, the fixture plate seat achieves smooth and reliable flipping between two workstations: horizontal (clamping / unloading) and vertical (welding). During the process, the top spring provides effective cushioning and stabilization, preventing impact. Crucially, the positioning frame mechanism integrated into this motion chain, through a special groove on the guide plate and the follower pin of the positioning movable part, automatically links the lifting and lowering movements of the positioning clamp with the flipping process. Only after the workpiece is clamped and flipped to a horizontal position for final position verification, the positioning clamp automatically rises and precisely engages with the cross joint of the workpiece, assisting in confirming alignment accuracy. Before welding, the positioning clamp automatically lowers to avoid interference. The entire process requires no manual intervention, demonstrating a high degree of intelligence and ensuring accurate positioning and interference-free welding.
[0017] In the core welding process, the welding assembly of this invention innovatively adopts a cross-shaped synchronous welding scheme. After the workpiece is flipped to a vertical position, the welding cylinder drives the welding block forward in one go, moving the four cross-shaped welding arms and their end welding heads forward synchronously. The four welding heads can simultaneously weld the four right-angle joints of the workpiece, ensuring complete consistency of welding parameters (speed, angle). This synchronous welding technology fundamentally eliminates the problems of uneven deformation and residual stress caused by different heat input sequences in sequential welding, significantly improving the uniformity of weld quality and the overall dimensional stability of the structure, and multiplying welding efficiency.
[0018] Finally, the entire device operates smoothly and efficiently. After welding is completed, each actuator automatically resets in sequence: the welding component retracts, the drive component reverses to release the clamp, and the flipping mechanism sends the workpiece back to the horizontal position. The entire process is seamless and rapid, greatly shortening the processing cycle of a single workpiece and providing a reliable guarantee for mass production. In summary, this invention effectively solves the technical problems of low efficiency, unstable quality, and reliance on skilled workers in traditional manual welding, providing a highly efficient, precise, and automated dedicated welding solution.
[0019] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 For the present invention Figure 1 Enlarged structural diagram of section A; Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the welding operation state structure of the present invention; Figure 5 This is a schematic diagram of the tower base corner plate of the present invention being removed from the fixture. Figure 6 This is a schematic diagram of the structure of the clamping disc base, the flipping bracket and the flipping drag part in the separated state of the present invention; Figure 7 This is a schematic diagram of the axial view of the directional clamp in the clamping disc base of the present invention in the separated state. Figure 8 This is a schematic diagram of the axial view of the clamping disc base of the present invention in the separated state after the corner support is removed. Figure 9 This is an axial view of the fixture base, control panel, and flipping bracket in a separated state according to the present invention. Figure 10 This is a schematic diagram of the split-state structure of the flip-up drag and flip-up guide of the present invention; Figure 11 This is a schematic diagram of the axial view of the positioning frame in a partially disassembled state according to the present invention; Figure 12 This is a schematic diagram of the axial view of the flip-up drag and welding bracket parts of the present invention; Figure 13 This is a schematic diagram of the horizontal state of the clamping disc base of the present invention.
[0021] In the picture: 1. Base plate; 2. Flipping guide table; 201. Flipping support; 202. Support block; 3. Controller; 4. Tilting the cylinder; 5. Tilting component; 501. Lower connecting rod; 5011. Stop block; 5012. Top spring; 502. Upper connecting rod; 503. Middle connecting block; 504. Clamping bolt; 505. Guide plate; 506. Guide groove; 507. Extension rod; 6. Welding bracket; 601. Welding cylinder; 602. Welding connector; 603. Welding guide tube; 604. Welding support arm; 605. Welding head; 606. Connecting pipe; 607. Support crossbar; 7. Flip-up stand; 8. Fixture base; 801. Operating port; 802. Clamping table; 803. Orientation strip hole; 9. Control panel; 901. Guide hole; 902. Ring bushing; 903. Gear; 10. Orientation clamp; 1001. Clamp rod; 1002. End rod; 1003. Clamping block; 1004. Pad block; 1005. Locking plate; 1006. Pull hole; 11. Drive frame; 1101. Gear motor; 1102. Worm gear; 12. End bracket; 1201. Support sleeve; 1202. Buffer rod; 1203. Spring; 1204. Support groove; 1205. Protruding tooth; 13. Tower base corner plate; 14. Positioning frame; 1401. Positioning movable part; 1402. Positioning clip; 1403. Follower pin; 1404. Insert rod. Detailed Implementation
[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0023] Please see Figures 1 to 13The present invention provides the following embodiment: an automatic welding device for tower bases of transmission line iron towers, used for welding cross-shaped tower base corner plates 13, including a base plate 1, a rectangular frame-shaped tilting guide platform 2 installed on the upper end of the base plate 1; a controller 3 installed on one end of the base plate 1; a tilting cylinder 4 vertically installed in the middle of the narrow side of one end of the tilting guide platform 2, the inner end of the piston rod of the tilting cylinder 4 extending into the inner frame of the tilting guide platform 2 and fixedly connected to a tilting drag member 5, the tilting drag member 5 sliding along the long side in the tilting guide platform 2; a tilting bracket 7 rotatably installed on the tilting guide platform 2 on the side of the tilting guide member 5 away from the tilting cylinder 4, capable of rotating 90 degrees; the tilting bracket... A clamping plate base 8 is fixedly installed at the long arm end of the frame 7; a control panel 9 is rotatably attached to the side wall of the clamping plate base 8 connected to the flipping bracket 7; a drive frame 11 is fixedly installed at the end of the clamping plate base 8 away from the flipping bracket 7; four directional clamps 10 are distributed in a ring on the side of the clamping plate base 8 away from the control panel 9, all of which face the center of the clamping plate base 8. An end corner support 12 perpendicular to the clamping plate base 8 is also provided between every two adjacent directional clamps 10. The tower base corner plate 13 is clamped and fixed between the directional clamps 10 and the end corner support 12, and the center of the tower base corner plate 13 is consistent with the center of the clamping plate base 8. The drive frame 11 is equipped with a drive assembly, which is used to drive the control panel 9 to rotate and control the four directional clamps 10 to fix and clamp the tower base corner plate 13. The flipping drag 5 is equipped with a flipping assembly, which is used to switch the angle of the flipping bracket 7 between 0 degrees and 90 degrees during the movement of the flipping drag 5 driven by the flipping cylinder 4. The upper end of the flipping drag 5 is also equipped with a welding bracket 6 biased towards the flipping cylinder 4. The welding bracket 6 is equipped with a welding assembly, which is used to simultaneously weld the four side seams of the tower base corner plate 13 in the clamping state when the clamping plate seat 8 is in the 90-degree state. The flipping guide table 2 between the flipping drag 5 and the flipping bracket 7 is also equipped with a positioning frame 14.
[0024] Among them, a flip support 201 is provided on the flip guide table 2 at the position corresponding to the flip bracket 7. The right-angle end of the flip bracket 7 is rotatably mounted on the flip support 201 through a rotating shaft. A support block 202 is fixedly provided at the end of the flip support 201 away from the flip drag 5. When the flip bracket 7 drives the clamp plate seat 8 to be in a vertical state, the bottom of the short arm of the flip bracket 7 is supported on the upper end of the support block 202.
[0025] The flipping assembly includes a lower connecting rod 501, a stop block 5011, a top spring 5012, an upper connecting rod 502, a middle connecting block 503, and a clamping bolt 504. The lower end of the lower connecting rod 501 is rotatably connected to one end of the flipping drag 5. The other end of the lower connecting rod 501 is fixedly provided with two spaced stop blocks 5011. The middle connecting block 503 is slidably mounted on the lower connecting rod 501 between the two stop blocks 5011. The top spring 5012 is mounted on the lower connecting rod 501 between the middle connecting block 503 and the end stop block 5011. The upper end of the middle connecting block 503 is vertically fixedly connected to the upper connecting rod 502 to the side away from the lower connecting rod 501. The clamping bolt 504 is also vertically screwed onto the middle connecting block 503. The inner end of the clamping bolt 504 is used to clamp and fix the upper connecting rod 502. The upper end of the upper connecting rod 502 is rotatably connected to the middle of the long arm of the flipping bracket 7.
[0026] The flipping assembly also includes a guide plate 505, a guide groove 506, and an extension rod 507. There are two guide plates 505. One end of the guide plate 505 is fixedly connected to the side wall of the flipping drag 5 near the positioning frame 14. The guide plate 505 is tangent to the inner frame side wall of the flipping guide table 2. The other end of the guide plate 505 is vertically connected to the extension rod 507. The extension rod 507 is vertically slidably inserted into the support block 202. The two guide plates 505 have guide grooves 506 on their opposite side walls. The guide groove 506 is composed of a horizontal section and an upward inclined bending section. The upward inclined bending section is located at the end near the extension rod 507.
[0027] The clamping plate base 8 has a square-shaped operating opening 801 in the middle. The fin weld of the tower base corner plate 13 is exposed in the operating opening 801. A circular clamping platform 802 is provided around the operating opening 801. The clamping platform 802 faces the side where the control panel 9 is located. The control panel 9 is rotated and clamped on the clamping platform 802. The clamping plate base 8 has directional strip holes 803 along the diameter distribution direction of the clamping plate base 8, corresponding to the position of the directional clamp 10.
[0028] The welding assembly includes a welding cylinder 601, a welding block 602, a welding guide tube 603, welding support arms 604, a welding head 605, a connecting pipe 606, and a support crossbar 607. The welding cylinder 601 is vertically fixedly installed on the upper end of the welding bracket 6, and is located on the side of the welding bracket 6 away from the flipping support 7. The piston rod of the welding cylinder 601 passes through the welding bracket 6 and is vertically fixedly connected to the welding block 602. The upper end of the welding block 602 is vertically facing the flipping support 7 and is fixedly provided with four welding support arms 604 arranged in a cross shape. Each welding support arm 604 is an isosceles trapezoidal structure with a narrow inner end and a wide outer end. The end of each welding support arm 604 is provided with a welding head 605 facing the middle. The outer side of the welding head 605 extends along the surface of the welding support arm 604 towards the welding block. A connecting pipe 606 is provided on one side of the welding block 602. A welding guide 603 is vertically provided at the end of the welding block 602 away from the welding support arm 604. The welding guide 603 is parallel to the welding cylinder 601 and is connected to the external welding equipment. The inner end of the welding guide 603 is connected to the connecting pipe 606. A support crossbar 607 is horizontally fixed at the bottom of the welding bracket 6 away from the flipping drag 5. The two ends of the support crossbar 607 are respectively slidably clamped on the upper sides of the flipping guide table 2. When the clamping plate 8 is in a vertical state, the piston rod of the welding cylinder 601 is pushed out, and the welding block 602 drives the welding support arm 604 to pass through the operating port 801 and move along the right angle joint of the tower base corner plate 13. The four welding heads 605 simultaneously weld the four side joints at the same speed and angle.
[0029] The control panel 9 has an arc-shaped guide hole 901 that slopes outward from the inside near the edge of the ring. The guide hole 901 corresponds to the directional strip hole 803. The control panel 9 has a widened ring bushing 902 at the edge of the ring. The outer arc surface of the ring bushing 902, which corresponds to the drive frame 11, has a section of inclined teeth 903. The drive assembly includes a geared motor 1101 and a worm gear 1102. The geared motor 1101 is horizontally mounted on the upper end of the drive frame 11. The worm gear 1102 is rotatably mounted in the drive frame 11. The worm gear 1102 meshes with the teeth 903. When the geared motor 1101 is working, it drives the worm gear 1102 to rotate, and the worm gear 1102 drives the control panel 9 to rotate.
[0030] The directional clamp 10 includes a clamp rod 1001, an end rod 1002, a clamping block 1003, a pad block 1004, a locking plate 1005, and a pull hole 1006. The directional clamp 10 is vertically slidably provided with a clamp rod 1001 aligned with the direction of the directional strip hole 803. One end of the clamp rod 1001 is vertically provided with an end rod 1002, which is slidably inserted into the directional strip hole 803 and passes through a guide hole 901 on the other side. The other end of the clamp rod 1001 is fixedly connected to the clamping block 1003. The inner side of the clamping block 1003 is slidably tangent to the clamping disc seat 8. The two ends of the clamping block 1003 are respectively at a 45-degree angle. A pad 1004 is fixedly connected to the tower base corner plate 13. The end of the pad 1004 contacts one fin sidewall of the tower base corner plate 13. A locking plate 1005 is vertically fixedly connected to the sidewall of the end of the pad 1004 away from the operating port 801. The locking plate 1005 is always parallel to one sidewall of the end corner support 12. The end of the locking plate 1005 is provided with evenly spaced strip-shaped pull holes 1006. When the control disk 9 rotates, the end rod 1002 is squeezed through the guide hole 901 and moves along the directional strip hole 803. The clamp rod 1001 moves accordingly. The clamping block 1003 moves radially along the clamp disk seat 8 to clamp and release the tower base corner plate 13.
[0031] The end corner brace 12 includes a support sleeve 1201, a buffer rod 1202, a spring 1203, a support groove 1204, and a protrusion 1205. The support sleeve 1201 is fitted onto one end of the end corner brace 12 near the operating port 801. The end of the support sleeve 1201 has a U-shaped support groove 1204. One end of the fin of the tower base corner plate 13 is fitted into the support groove 1204. Two symmetrical buffer rods 1202 are vertically arranged in the support sleeve 1201. The buffer rods 1202 are vertically slidably inserted into the end corner brace 12. 2. A spring 1203 is installed on the upper part. The spring 1203 provides a constant pushing force to the operating port 801 side of the support sleeve 1201, that is, it provides a pushing force to the tower base corner plate 13 to the operating port 801 side. The side walls on both sides of the support sleeve 1201 are respectively provided with evenly spaced strip-shaped protrusions 1205. When the locking pull plate 1005 follows the pad block 1004 to clamp and fix the tower base corner plate 13, the pull hole 1006 on the locking pull plate 1005 is fastened to the protrusions 1205, locking the support sleeve 1201 and pulling it to the operating port 801 side.
[0032] Among them, the positioning frame 14 includes a positioning movable member 1401, a positioning clamping member 1402, a follower pin 1403 and a plug rod 1404. A "C"-shaped positioning movable member 1401 is vertically slidably mounted on the positioning frame 14. The upper end of the positioning movable member 1401 is fixedly provided with a positioning clamping member 1402 for positioning and clamping the direct joint of the tower base gusset 13. The middle part of the lower end of the positioning movable member 1401 is vertically provided with a plug rod 1404. The plug rod 1404 is vertically slidably inserted into the positioning frame 14. The left and right bottom ends of the positioning movable member 1401 are respectively vertically provided with follower pins 1403. The follower pins 1403 are slidably placed in the guide groove 506. When the flipping cylinder 4 drives the flipping drag member 5 away from the flipping bracket 7, the follower pins 1403 move along the lower horizontal section of the guide groove 506. When moving to the end of the horizontal section, the flipping drag member 5 also drives the flipping bracket 7 and the fixture disk base 8 to flip to the horizontal state. Under the action of the top spring 5012 and the gravity of the flipping bracket 7 and its upper components, the middle connecting block 503 always remains in contact with the lower stop block 5011 during this process until the flipping bracket 7 and the fixture disk base 8 are in the horizontal state. Then, the flipping drag member 5 continues to be dragged outward. The follower pin 1403 moves into the upper groove section of the guide groove 506, and the positioning movable member 1401 is lifted accordingly. The positioning clamping member 1402 protrudes upward from the operation port 801 and corresponds to the right-angle joint of the tower base gusset 13 placed on the fixture disk base 8. The auxiliary orientation fixture 10 accurately docks and fixes the tower base gusset 13. When welding is required, the piston rod of the flipping cylinder 4 is pushed out, and the flipping drag member 5 moves toward the flipping bracket 7. The lower connecting rod 501 moves in the middle connecting block 503 during the idle stroke until the top spring 5012 is in the natural holding state. At the same time, the follower pin 1403 also moves into the lower horizontal section of the guide groove 506, and the positioning clamping member 1402 drops from the operation port 801. The flipping drag member 5 continues to move, and the flipping bracket 7 flips to the vertical state, and the welding assembly performs the welding operation.
[0033] The following further explains the function and effect of each structure mentioned above, so that those skilled in the art can better understand the technical solution: The base plate 1 serves as the supporting base for the entire device, and the rectangular frame-shaped flipping guide 2 installed on its upper end provides a guide rail and structural frame for the flipping motion. The controller 3 at one end of the base plate 1 is responsible for coordinating and controlling the actions of each component to achieve automated operation. The flipping cylinder 4 in the middle of the narrow side of one end of the flipping guide 2 drives the flipping drag 5 to slide along the long side in the inner frame of the flipping guide 2 through the extension and retraction of the piston rod, thereby driving the subsequent flipping and welding process. The welding bracket 6 set on the flipping drag 5 carries the welding assembly and is used to provide power and guidance during welding; while the side of the flipping drag 5 away from the flipping cylinder 4 is connected to the flipping bracket 7 through the flipping assembly. The flipping bracket 7 can rotate 90 degrees on the flipping guide 2, and a clamping plate seat 8 is fixedly installed at its long arm end for clamping the workpiece. The control panel 9, which is rotated and mounted on the side wall of the clamping plate 8, controls the clamping action by rotation. The drive frame 11 is fixedly installed at the end of the clamping plate 8 away from the flipping bracket 7 to accommodate the drive assembly. The four directional clamps 10 distributed in a ring on the side of the clamping plate 8 are all facing the center. The end corner brackets 12, which are vertically arranged between each two adjacent directional clamps 10, cooperate with the directional clamps 10 to clamp and fix the tower base corner plate 13 between them, and ensure that the center of the tower base corner plate 13 is consistent with the center of the clamping plate 8, thereby achieving stable clamping.
[0034] The drive assembly on the drive frame 11 includes a geared motor 1101 and a worm gear 1102. When the geared motor 1101 is working, it drives the worm gear 1102 to rotate. The worm gear 1102 meshes with the ring edge teeth 903 of the control disk 9, driving the control disk 9 to rotate. Then, through the arc-shaped guide hole 901 on the control disk 9, it cooperates with the end rod 1002 of the orientation fixture 10, causing the fixture rod 1001 to move along the orientation strip hole 803, driving the clamping block 1003 and the pad block 1004 to move radially, thereby clamping or releasing the tower base corner plate 13 and ensuring that the workpiece is firmly positioned during the welding process. The end bracket 12 provides elastic thrust in the direction of the operating port 801 through the support sleeve 1201, buffer rod 1202 and spring 1203, so that the end of the fin plate of the tower base corner plate 13 is inserted into the support groove 1204. At the same time, the pull hole 1006 on the locking pull plate 1005 is engaged with the protruding tooth 1205 on the side wall of the support sleeve 1201 to achieve locking and pulling, and enhance the clamping stability.
[0035] The tilting assembly on the tilting tow piece 5 includes a lower connecting rod 501, a stop block 5011, a top spring 5012, an upper connecting rod 502, a middle connecting block 503, and a clamping bolt 504. The lower end of the lower connecting rod 501 is rotatably connected to the tilting tow piece 5, and the upper end is connected to the upper connecting rod 502 via the middle connecting block 503. The upper end of the upper connecting rod 502 is rotatably connected to the middle of the long arm of the tilting bracket 7. When the tilting cylinder 4 drives the tilting tow piece 5 to move, the lower connecting rod 501 pushes the upper connecting rod 502. Under the action of the top spring 5012 and gravity, the middle connecting block 503 slides along the lower connecting rod 501, realizing the smooth switching of the tilting bracket 7 between a 0-degree horizontal state and a 90-degree vertical state. The guide plate 505 and guide groove 506 cooperate with the follower pin 1403 of the positioning frame 14. During the movement of the flipped drag part 5, the follower pin 1403 slides along the horizontal section and the inclined bending section of the guide groove 506 to control the lifting and lowering of the positioning movable part 1401. This allows the positioning clip 1402 to rise out of the operation port 801 when clamped, assisting the precise docking of the right-angle joint of the tower base corner plate 13. During welding, it descends to avoid obstruction, ensuring that the welding components can work without obstacles.
[0036] The welding assembly includes a welding cylinder 601, a welding block 602, a welding guide 603, welding arms 604, a welding head 605, a connecting pipe 606, and a support crossbar 607. The welding cylinder 601 is vertically fixed to the welding bracket 6, and its piston rod is connected to the welding block 602. Four cross-shaped welding arms 604 are arranged on the upper end of the welding block 602, and the welding head 605 is installed at the end. When the fixture plate 8 is in a vertical state, the welding cylinder 601 pushes out its piston rod, and the welding block 602 drives the welding arms 604 to pass through the operating port 801, so that the welding head 605 is aligned with the four right-angle joints of the tower base corner plate 13. The welding guide 603 is connected to external welding equipment and conveys welding material through the connecting pipe 606, realizing synchronous and same-speed welding of the four side seams, improving welding efficiency and consistency. The support crossbar 607 is slidably clamped on both sides of the upper end of the tilting guide table 2 to enhance the stability of the welding bracket 6.
[0037] The positioning frame 14, through the cooperation of the positioning movable part 1401, the positioning clip 1402, the follower pin 1403 and the insertion rod 1404, is raised and lowered by the guide groove 506 during the movement of the flipping drag part 5, ensuring that the positioning clip 1402 only protrudes from the operation port 801 for positioning during the clamping stage, and retracts during the welding stage to avoid interference.
[0038] Working principle: Initially, the piston rod of the tilting cylinder 4 is in the retracted state, the tilting drag 5 is located at the end of the tilting guide 2 away from the tilting bracket 7, and the clamping plate 8 is kept in a horizontal position, making it easy for the operator to place the cross-shaped tower base plate 13 on it. During placement, the center of the tower base plate 13 is aligned with the center of the clamping plate 8, and the ends of its four fins are respectively engaged in the support grooves 1204 of the four end brackets 12. Subsequently, the drive assembly is started by the controller 3, the reduction motor 1101 works and drives the worm gear 1102 to rotate. The worm gear 1102 meshes with the teeth 903 fixed on the ring bushing 902 of the control disk 9, driving the control disk 9 to rotate. When the control disk 9 rotates, the arc-shaped guide hole 901 on it applies a radial thrust to the end rod 1002 of the directional clamp 10 that slides through it, forcing the end rod 1002 to slide towards the center along the directional strip hole 803 on the clamping plate 8. The end rod 1002 drives the clamping rod 1001 and the clamping block 1003 fixed to its end to move synchronously. The pads 1004 at both ends of the clamping block 1003 then close towards the center, tightly contacting and clamping the side wall of the fin of the tower base corner plate 13 from both sides. At the same time, the locking pull plate 1005 on the side wall of the pad 1004 moves accordingly, and the pull hole 1006 at its end engages with the protrusions 1205 on both sides of the support sleeve 1201 of the end corner bracket 12, thereby locking the support sleeve 1201. With the help of the elastic preload of the spring 1203, the locking pull plate 1005 pulls the end of the fin of the tower base corner plate 13 towards the operating port 801, so that the workpiece is firmly positioned in both the radial and axial directions.
[0039] After the workpiece is clamped, it is positioned and flipped before welding. Controller 3 controls the piston rod of the flipping cylinder 4 to extend, driving the flipping drag 5 to slide along the flipping guide 2 towards the flipping bracket 7. The movement of the flipping drag 5 drives the flipping bracket 7 to flip through the flipping assembly. Specifically, the flipping drag 5 pushes the upper connecting rod 502 through the lower connecting rod 501. Under the preload of the top spring 5012 and gravity, the middle connecting block 503 remains in contact with the lower stop block 5011, allowing the flipping action to start smoothly. At the same time, the two guide plates 505 fixed on the flipping drag 5 move accordingly, and the guide grooves 506 on the guide plates 505 act on the follower pin 1403 of the positioning frame 14. In the initial stage of the movement of the flipping drag 5, the follower pin 1403 slides in the lower horizontal section of the guide groove 506, and the positioning movable part 1401 and the positioning clip 1402 fixed at its upper end are in a low position, not interfering with the workpiece. When the flipping drag 5 moves to bring the flipping bracket 7 close to a horizontal position, the follower pin 1403 reaches the end of the horizontal section of the guide groove 506 and enters the inclined bending section of the upper section. At this time, the flipping drag 5 continues to move outward, and the follower pin 1403 rises along the inclined section, driving the entire positioning movable part 1401 to rise in the vertical direction. The positioning clip 1402 passes upward from the operating port 801 of the clamping plate 8, and its top end is precisely engaged in the cross-shaped right-angle joint of the tower base corner plate 13, which helps to verify and ensure the positional accuracy of the workpiece after clamping, and provides a reference for subsequent welding.
[0040] After positioning is completed, the device enters the welding preparation stage. Controller 3 controls the piston rod of the tilting cylinder 4 to retract, pulling the tilting drag 5 to move in the opposite direction. The follower pin 1403 slides from the inclined section of the guide groove 506 back to the horizontal section, the positioning movable part 1401 descends under gravity, and the positioning clip 1402 falls out of the operating port 801 and completely avoids the obstruction. At the same time, the tilting drag 5 pulls the upper connecting rod 502 through the lower connecting rod 501, pushing the tilting bracket 7 to tilt vertically around its rotation axis. The top spring 5012 provides buffering and stabilizing force to ensure smooth tilting. When the tilting bracket 7 tilts to the vertical position, the bottom of its short arm is reliably supported on the upper end of the support block 202, forming a stable support. At this time, the clamping plate 8 holding the tower base corner plate 13 is in a vertical position, and the four right-angle joints of the tower base corner plate 13 are vertically downward, facing the welding assembly.
[0041] The welding phase then begins. Controller 3 activates the welding assembly, and the piston rod of welding cylinder 601 extends, driving welding block 602 and four cross-shaped welding arms 604 fixed thereon forward. Welding arms 604 pass through the operating port 801 of fixture plate 8, with their welding heads 605 precisely aligned with the four right-angle joints of tower base corner plate 13. Welding materials supplied by external welding equipment are delivered to each welding head 605 via welding conduit 603 and connecting pipe 606. Under the uniform advance of welding cylinder 601, the four welding heads 605 simultaneously weld the four joints at the same speed and angle, ensuring consistent welding quality and operational efficiency. Support crossbar 607 slides on tilting guide table 2, providing additional lateral stability throughout the welding process.
[0042] After the welding operation is completed, the piston rod of the welding cylinder 601 retracts, causing the welding support arm 604 and the welding head 605 to exit from the operating port 801. Next, the drive assembly reverses its operation, the reduction motor 1101 reverses, and the control disc 9 rotates in the opposite direction, releasing the pressure on the end rod 1002 through the guide hole 901. The directional clamp 10 radially loosens, and the pull hole 1006 of the locking plate 1005 disengages from the protrusion 1205, releasing the clamping and locking of the workpiece. Finally, the tilting cylinder 4 pushes out its piston rod again, driving the tilting drag 5 to move. The tilting assembly then tilts the welded tower base corner plate 13 back to a horizontal position along with the clamping disc 8, facilitating the operator's unloading of the finished workpiece, thus completing a full work cycle.
[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.
Claims
1. An automatic welding device for the base of a transmission line tower, used for welding a cross-shaped base corner plate (13), comprising a base plate (1), wherein a rectangular frame-shaped flipping guide (2) is installed on the upper end of the base plate (1); a controller (3) is installed on one end of the base plate (1); characterized in that: A tilting cylinder (4) is vertically mounted in the middle of the narrow side of one end of the tilting guide (2). The inner end of the piston rod of the tilting cylinder (4) extends into the inner frame of the tilting guide (2) and is fixedly connected to a tilting drag (5). The tilting drag (5) slides along the long side in the tilting guide (2). A tilting bracket (7) capable of rotating 90 degrees is rotatably mounted on the tilting guide (2) on the side of the tilting guide (2) away from the tilting cylinder (4). A clamping plate seat (8) is fixedly mounted on the long arm end of the tilting bracket (7). A control device is rotatably attached to the side wall of the clamping plate seat (8) connected to the tilting bracket (7). The clamping plate (9) is fixedly mounted with a drive frame (11) at one end of the clamping plate (8) away from the flipping bracket (7); four directional clamps (10) are arranged in a ring on the side of the clamping plate (8) away from the control plate (9). The directional clamps (10) are all facing the center of the clamping plate (8). Between every two adjacent directional clamps (10), there is also an end corner support (12) perpendicular to the clamping plate (8). The tower base corner plate (13) is clamped and fixed between the directional clamps (10) and the end corner support (12). The center of the tower base corner plate (13) is consistent with the center of the clamping plate (8). The drive frame (11) is provided with a drive assembly, which is used to drive the control panel (9) to rotate and control the four directional clamps (10) to fix and clamp the tower base corner plate (13); the flipping drag (5) is provided with a flipping assembly, which is used to switch the angle between 0 degrees and 90 degrees of the flipping bracket (7) during the process of the flipping cylinder (4) driving the flipping drag (5) to move; the upper end of the flipping drag (5) is also provided with a welding bracket (6) biased towards the flipping cylinder (4), and the welding bracket (6) is provided with a welding assembly, which is used to synchronously weld the four side seams of the tower base corner plate (13) in the clamping state when the clamping plate seat (8) is in the 90-degree state; the flipping guide table (2) between the flipping drag (5) and the flipping bracket (7) is also provided with a positioning frame (14).
2. The automatic welding device for transmission line tower bases according to claim 1, characterized in that: A flip support (201) is provided on the flip guide (2) at the position corresponding to the flip bracket (7). The right-angle end of the flip bracket (7) is rotatably mounted on the flip support (201) through a rotating shaft. A support block (202) is fixedly provided at the end of the flip support (201) away from the flip drag (5). When the flip bracket (7) drives the clamp plate seat (8) to be in a vertical state, the bottom of the short arm of the flip bracket (7) is supported on the upper end of the support block (202).
3. The automatic welding device for transmission line tower bases according to claim 2, characterized in that: The flipping assembly includes a lower connecting rod (501), a stop block (5011), a top spring (5012), an upper connecting rod (502), a middle connecting block (503), and a clamping bolt (504). The lower end of the lower connecting rod (501) is rotatably connected to one end of the flipping drag (5). The other end of the lower connecting rod (501) is fixedly provided with two spaced stop blocks (5011). The middle connecting block (503) is slidably mounted on the lower connecting rod (501) between the two stop blocks (5011). The top spring (5012) is... 012) The lower connecting rod (501) is fitted between the middle connecting block (503) and the end stop block (5011). The upper end of the middle connecting block (503) is vertically fixed to the upper connecting rod (502) away from the lower connecting rod (501). The middle connecting block (503) is also vertically screwed with a clamping bolt (504). The inner end of the clamping bolt (504) is used to clamp and fix the upper connecting rod (502). The upper end of the upper connecting rod (502) is rotatably connected to the middle of the long arm of the flipping bracket (7).
4. The automatic welding device for transmission line tower bases according to claim 3, characterized in that: The flipping assembly also includes a guide plate (505), a guide groove (506), and an extension rod (507). There are two guide plates (505). One end of the guide plate (505) is fixedly connected to the side wall of the flipping drag (5) near the positioning frame (14). The guide plate (505) is tangent to the inner frame side wall of the flipping guide (2). The other end of the guide plate (505) is vertically connected to the middle of the extension rod (507). The extension rod (507) is vertically slidably inserted into the support block (202). The two guide plates (505) are respectively provided with guide grooves (506) on their opposite side walls. The guide groove (506) is composed of a horizontal section and an upward inclined bending section. The upward inclined bending section is located at the end near the extension rod (507).
5. The automatic welding device for transmission line tower bases according to claim 4, characterized in that: The clamping plate base (8) has a square-shaped operating opening (801) in the middle. The fin weld of the tower base corner plate (13) is exposed in the operating opening (801). A circular clamping platform (802) is provided around the operating opening (801). The clamping platform (802) faces the side where the control panel (9) is located. The control panel (9) is rotated and clamped on the clamping platform (802). The clamping plate base (8) has directional slots (803) along the diameter distribution direction of the clamping plate base (8) corresponding to the position of the directional clamp (10).
6. The automatic welding device for transmission line tower bases according to claim 5, characterized in that: The welding assembly includes a welding cylinder (601), a welding block (602), a welding guide tube (603), welding arms (604), a welding head (605), a connecting pipe (606), and a support crossbar (607). The welding cylinder (601) is vertically fixedly installed on the upper end of the welding bracket (6), and the welding cylinder (601) is located on the side of the welding bracket (6) away from the flipping bracket (7). The piston rod of the welding cylinder (601) passes through the welding bracket (6) and is vertically fixedly connected to the welding block (602). The upper end of the welding block (602) is fixedly provided with four welding arms (604) arranged in a cross shape on the side of the flipping bracket (7). Each welding arm (604) is an isosceles trapezoidal structure with a narrow inner end and a wide outer end. The end of each welding arm (604) is provided with a welding head (605) facing the middle. The outer side of the welding head (605) extends along the surface of the welding arm (604) towards the welding block. (602) A connecting pipe (606) is provided on one side. A welding guide pipe (603) is vertically provided at the end of the welding block (602) away from the welding support arm (604). The welding guide pipe (603) is parallel to the welding cylinder (601). The welding guide pipe (603) is connected to the external welding equipment. The inner end of the welding guide pipe (603) is connected to the connecting pipe (606). The bottom of the welding bracket (6) is horizontally fixed at the end away from the flip-over drag (5). The two ends of the support rod (607) are respectively slidably clamped on the upper sides of the flipping guide (2); when the clamp plate (8) is in a vertical state, the piston rod of the welding cylinder (601) is pushed out, the welding block (602) drives the welding arm (604) to pass through the operating port (801) and move along the right angle joint of the tower base corner plate (13), and the four welding heads (605) simultaneously weld the four side joints at the same speed and angle.
7. The automatic welding device for transmission line tower bases according to claim 1, characterized in that: The control panel (9) is provided with an arc-shaped guide hole (901) that slopes outward from the inside near the edge of the ring. The guide hole (901) corresponds to the position of the directional strip hole (803). The control panel (9) is provided with a widened ring bushing (902) at the edge of the ring. The ring bushing (902) is provided with a section of inclined teeth (903) on the outer arc surface corresponding to the drive frame (11). The drive assembly includes a geared motor (1101) and a worm gear (1102). The geared motor (1101) is horizontally mounted on the upper end of the drive frame (11). The worm gear (1102) is rotatably mounted in the drive frame (11). The worm gear (1102) meshes with the teeth (903). When the geared motor (1101) is working, it drives the worm gear (1102) to rotate. The worm gear (1102) drives the control panel (9) to rotate.
8. The automatic welding device for transmission line tower bases according to claim 5, characterized in that: The orientation clamp (10) includes a clamp rod (1001), an end rod (1002), a clamping block (1003), a pad (1004), a locking plate (1005), and a pull hole (1006). The orientation clamp (10) is vertically slidably provided with a clamp rod (1001) aligned with the direction of the orientation strip hole (803). One end of the clamp rod (1001) is vertically provided with an end rod (1002), which is slidably inserted into the orientation strip hole (803) and passes through a guide hole (901) on the other side. The other end of the clamp rod (1001) is fixedly connected to the clamping block (1003). The inner side of the clamping block (1003) is slidably tangent to the clamping plate seat (8). The two ends of the clamping block (1003) are respectively four-dimensional. A pad (1004) is fixedly connected at a 15-degree angle. The end of the pad (1004) contacts the side wall of one fin of the tower base corner plate (13). A locking plate (1005) is vertically fixedly connected to the side wall of the end of the pad (1004) away from the operating port (801). The locking plate (1005) is always parallel to the side wall of one end of the end corner support (12). The end of the locking plate (1005) is provided with evenly spaced strip-shaped pull holes (1006). When the control panel (9) rotates, it squeezes the end rod (1002) through the guide hole (901) and moves along the directional strip hole (803). The clamp rod (1001) moves accordingly. The clamping block (1003) moves radially along the clamping plate seat (8) to clamp and release the tower base corner plate (13).
9. An automatic welding device for transmission line tower bases according to claim 5, characterized in that: The end corner brace (12) includes a support sleeve (1201), a buffer rod (1202), a spring (1203), a support groove (1204), and a protrusion (1205). The end of the end corner brace (12) near the operating port (801) is fitted with a support sleeve (1201). The end of the support sleeve (1201) is provided with a U-shaped support groove (1204). The end of the fin plate of the tower base (13) is fitted into the support groove (1204). Two symmetrical buffer rods (1202) are vertically arranged in the support sleeve (1201). The buffer rods (1202) are vertically slidably inserted into the end corner brace (12). 202) A spring (1203) is installed on the upper part. The spring (1203) provides the support sleeve (1201) with a constant push force towards the operating port (801), that is, it provides the tower base corner plate (13) with a push force towards the operating port (801). The side walls on both sides of the support sleeve (1201) are provided with evenly spaced strip-shaped protrusions (1205). When the locking plate (1005) clamps and fixes the tower base corner plate (13) with the pad (1004), the pull hole (1006) on the locking plate (1005) is fastened to the protrusion (1205), locking the support sleeve (1201) and pulling it towards the operating port (801).
10. An automatic welding device for transmission line tower bases according to claim 5, characterized in that: The positioning frame (14) includes a positioning movable component (1401), a positioning clip (1402), a follower pin (1403), and a plug rod (1404). The positioning movable component (1401) is vertically slidably mounted on the positioning frame (14). The upper end of the positioning movable component (1401) is fixedly provided with a positioning clip (1402) for positioning and clamping the direct joint of the tower base corner plate (13). The lower middle part of the positioning movable component (1401) is vertically provided with a plug rod (1404), which is vertically slidably inserted into the positioning frame (14). In the middle, the bottom of the left and right ends of the positioning movable part (1401) are respectively provided with follower pins (1403). The follower pins (1403) are slidably placed in the guide groove (506). When the flipping cylinder (4) drives the flipping drag (5) away from the flipping bracket (7), the follower pins (1403) move along the lower horizontal section of the guide groove (506). When it moves to the end of the horizontal section, the flipping drag (5) also drives the flipping bracket (7) and the clamping plate seat (8) to flip to the horizontal state. Under the action of the top spring (5012), the flipping bracket (7) and the gravity of its components, the flipping drag (5) is rotated to the horizontal state. During this process, the connecting block (503) remains in contact with the stop block (5011) below until the flipping bracket (7) and the clamping plate (8) are in a horizontal state. Then, the flipping drag (5) continues to be dragged outward and moves to the upper section of the guide groove (506) with the follower pin (1403). The positioning movable part (1401) is then lifted up, and the positioning clip (1402) passes upward from the operating port (801) and corresponds to the right angle joint of the tower base corner plate (13) placed on the clamping plate (8). The auxiliary directional clamp (10) aligns with the tower base. The corner plate (13) is precisely connected and fixed. When welding is required, the piston rod of the flip cylinder (4) is pushed out, the flip drag (5) moves to the side of the flip bracket (7), the lower connecting rod (501) moves in the hollow stroke of the middle connecting block (503) until the top spring (5012) is in a natural holding state. At the same time, the follower pin (1403) also moves to the lower horizontal section of the guide groove (506), the positioning clip (1402) falls from the operating port (801), the flip drag (5) continues to move, the flip bracket (7) flips to a vertical state, and the welding assembly performs welding operations.