An automatic welding device and method for the anchor bolt assembly of a power transmission tower

Abstract

The present invention discloses an automatic welding device and method for the anchor bolt assembly of a power transmission tower, which relates to the technical field of welding. It includes a hollow base, on the top of which a protective cover is fixedly installed. A revolving door is rotatably installed on the inner wall of the protective cover. A driving device is fixedly installed on the top of the inner wall of the protective cover, and an electric telescopic rod is fixedly installed at the output end of the driving device. A welding device is fixedly installed at the output end of the electric telescopic rod; a clamping device is arranged on the top of the hollow base. The clamping device includes a motor, bevel gears, a screw rod, a driven gear, a threaded block, a clamping plate, a sliding rod, a fixing plate, a sliding plate, a short rod, a limiting plate and a placement plate. The four corners of the workpiece are clamped by the clamping plate to prevent the workpiece from moving during the welding process, resulting in the deviation of the welding position and affecting the welding accuracy. The welding stability is improved by pressing with the limiting plate.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and specifically to an automatic welding device and method for the anchor bolt assembly of a power transmission tower. Background Technique

[0002] The anchor bolts are usually prefabricated in the tower factory, welded and combined with a square bottom plate and stiffening rib plates. The thread part is treated with hot-dip galvanization, and then the assembled parts are transported to the site and buried in the concrete foundation.

[0003] The patent with the patent announcement number CN112496648B relates to an automatic welding device for the anchor bolt assembly of a power transmission tower. The bolt is horizontally placed on the supporting wheels of the bracket, one end of the bolt abuts against the bottom plate, and the other side of the bottom plate is attracted by the bottom plate magnet at the center of the turntable. The turntable is connected to the motor shaft, and the motor shaft passes through the motor base and the main shaft base and is connected to the motor through a speed reducer; the welding line between the bottom plate and the bolt is within the moving range of the welding head of the welding robot. This patent has changed the status quo of manual welding of the special anchor bolt assembly of the power transmission tower. Cooperating with the automatic welding robot, it realizes the rapid automatic welding of the anchor bolt assembly, greatly improves the welding efficiency, and has the advantages of rapid workpiece positioning and accurate welding.

[0004] In the above patent, by changing the status quo of manual welding of the special anchor bolt assembly of the power transmission tower and cooperating with the automatic welding robot, the rapid automatic welding of the anchor bolt assembly is realized, the welding efficiency is greatly improved, and it has the advantages of rapid workpiece positioning and accurate welding. However, during the process of fixing the anchor bolt assembly, instability may occur, resulting in shaking or displacement during the welding process, which affects the welding effect. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an automatic welding device and method for the anchor bolt assembly of a power transmission tower, which solves the problems raised in the above background technique.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An automatic welding device for the anchor bolts of a power transmission tower, comprising a hollow base, on the top of which a protective cover is fixedly installed. A revolving door is rotatably installed on the inner wall of the protective cover. A driving device is fixedly installed on the top of the inner wall of the protective cover, and an electric telescopic rod is fixedly installed at the output end of the driving device, and a welding device is fixedly installed at the output end of the electric telescopic rod; a clamping device is arranged on the top of the hollow base. The clamping device includes a motor, bevel gears, a screw rod, a driven gear, a threaded block, a clamping plate, a sliding rod, a fixing plate, a sliding plate, a short rod, a limiting plate, and a placing plate. The rotation of the bevel gear drives the rotation of the driven gear, the rotation of the driven gear drives the rotation of the screw rod, the rotation of the screw rod drives the rotation of the threaded block, and the rotation of the threaded block drives the clamping plate to move towards the workpiece. The motor is fixedly installed at the bottom of the inner part of the hollow base, the bevel gear is fixedly installed at the output end of the motor, a groove is opened on the top of the hollow base, the screw rod is rotatably installed on the inner wall of the groove, the driven gear is fixedly installed on the side of the screw rod away from the groove, the bevel gear meshes with the surface of the driven gear, the threaded block is threadedly installed on the circumferential surface of the screw rod, the clamping plate is fixedly installed on the top of the threaded block, the sliding rod slidably penetrates the surface of the clamping plate, the fixing plate is fixedly installed on the surface of the clamping plate, the sliding plate is slidably installed on the surface of the fixing plate, the short rod is fixedly installed on the surface of the sliding plate, the limiting plate is fixedly installed at the bottom of the short rod, and the placing plate is fixedly installed on the top of the hollow base. The movement of the sliding rod towards the protective cover will squeeze the sliding plate to move downward, the downward movement of the sliding plate will drive the short rod to move downward, and the downward movement of the short rod will drive the limiting plate to move downward, and the workpiece is squeezed by the downward movement of the limiting plate.

[0007] According to the above technical solution, a first spring is arranged between the sliding rod and the clamping plate, and the sliding rod is driven to reset by the first spring. A second spring is arranged between the sliding plate and the fixing plate, and the sliding plate is driven to reset by the second spring.

[0008] According to the above technical solution, a correction device for correcting the workpiece is arranged inside the placing plate, and a protection device is arranged on the correction device. The correction device includes an L-shaped rod, an elastic telescopic rod, a correction plate, and a guide plate. The movement of the threaded block towards the workpiece drives the L-shaped rod to move towards the workpiece, and the movement of the L-shaped rod towards the workpiece will push the guide plate towards the workpiece. The L-shaped rod is fixedly installed on the top of the threaded block, a chute is opened on the surface of the placing plate, the elastic telescopic rod is fixedly installed on the inner wall of the chute, the correction plate is fixedly installed at the fixed end of the elastic telescopic rod, and the guide plate is fixedly installed on the side of the correction plate away from the elastic telescopic rod.

[0009] According to the above technical solution, a push rod is fixedly installed at the fixed end of the elastic telescopic rod. A trapezoidal block is slidably installed on the inner wall of the chute. A support plate is fixedly installed at the top of the trapezoidal block. When the trapezoidal block moves upward, it will drive the support plate to move upward, and the bottom of the workpiece is supported by the upward movement of the support plate.

[0010] According to the above technical solution, the push rod is in contact with the surface of the trapezoidal block. A third spring is arranged between the chute and the trapezoidal block, and the trapezoidal block is driven to reset by the third spring.

[0011] According to the above technical solution, the protection device includes a connecting rod, an L-shaped plate, a limiting frame and an elastic telescopic block. When the trapezoidal block moves upward, it drives the connecting rod to move upward. When the connecting rod moves upward, it drives the L-shaped plate to move upward. The L-shaped plate moves upward and is clamped into the limiting frame, and the L-shaped plate is limited by the limiting frame. The connecting rod is fixedly installed on the surface of the trapezoidal block. The L-shaped plate is fixedly installed at one end of the connecting rod away from the trapezoidal block. The elastic telescopic block is fixedly installed on the side of the revolving door close to the welding equipment. The limiting frame is fixedly installed at the free end of the elastic telescopic block.

[0012] According to the above technical solution, a pull rod is fixedly installed at the free end of the elastic telescopic block. A protective shell is slidably installed on the side of the revolving door away from the pull rod. A short plate is fixedly installed on the surface of the protective shell. An elastic telescopic plate is fixedly installed on the side of the revolving door away from the pull rod. When the short plate moves upward, it will touch the free end of the elastic telescopic plate, and the elastic telescopic plate will limit the short plate to prevent the fourth spring from driving the protective shell to reset when the hand is released.

[0013] According to the above technical solution, the L-shaped plate is arranged below the limiting frame. A fourth spring is arranged between the revolving door and the protective shell, and the protective shell is driven to reset by the fourth spring.

[0014] The present invention provides an automatic welding device and method for the anchor bolt assembly of a power transmission tower. It has the following beneficial effects:

[0015] (1) In this invention, by placing the workpiece on the placing plate, the workpiece is welded through the cooperation of the driving device, the electric telescopic rod and the welding equipment. The four corners of the workpiece are clamped by the clamping plates to prevent the workpiece from moving during the welding process, resulting in the deviation of the welding position and affecting the welding accuracy. At the same time, when the short rod moves downward, it drives the limiting plate to move downward, and the workpiece is extruded by the downward movement of the limiting plate to prevent the shaking during welding, resulting in unstable welding. By pressing with the limiting plate, the welding stability is improved.

[0016] (2) In this invention, when the guide plate moves towards the workpiece, it drives the correction plate to move towards the workpiece. By moving the correction plate towards the workpiece, the position of the workpiece is corrected, preventing the position of the workpiece from shifting during placement, which may lead to inaccurate clamping of the workpiece during clamping and cause problems in subsequent welding. By moving the support plate upward to support the bottom of the workpiece, the workpiece is lifted, enabling the operator and the equipment to better control the welding angle and position, reducing the occurrence of welding defects, and improving the strength and consistency of the weld seam.

[0017] (3) In this invention, when the L-shaped plate moves upward, it will be stuck into the limit frame. The limit frame limits the L-shaped plate, preventing the revolving door from being opened. During welding processing, if the user accidentally operates and opens the revolving door, the welding sparks may splash into the eyes, posing a safety hazard. At the same time, when the limit frame moves upward, the limit of the L-shaped plate on the limit frame is released, enabling the revolving door to be opened normally, improving the applicability of the equipment. Through the setting of the protective shell, it prevents the operator from accidentally operating and opening the revolving door, affecting the safety of the equipment. Brief Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the overall sectional structure of the present invention;

[0020] Figure 3 is a schematic diagram of the clamping device structure of the present invention;

[0021] Figure 4 is a schematic diagram of the top structure of the hollow base of the present invention;

[0022] Figure 5 For the present invention Figure 4 is an enlarged schematic diagram of the structure of part A in;

[0023] Figure 6 is a schematic diagram of the sectional structure of the placement plate of the present invention;

[0024] Figure 7 is a schematic diagram of the sectional structure of the revolving door of the present invention.

[0025] In the figure: 1, hollow base; 2, protective cover; 3, revolving door; 4, driving device; 5, electric telescopic rod; 6, welding equipment; 7, motor; 8, bevel gear; 9, screw rod; 10, driven gear; 11, threaded block; 12, clamping plate; 13, sliding rod; 14, fixing plate; 15, sliding plate; 16, short rod; 17, limiting plate; 18, placing plate; 191, L-shaped rod; 192, elastic telescopic rod; 193, correcting plate; 194, guiding plate; 195, push rod; 196, trapezoidal block; 197, supporting plate; 201, connecting rod; 202, L-shaped plate; 203, limiting frame; 204, elastic telescopic block; 205, pull rod; 206, protective shell; 207, short board; 208, elastic telescopic plate. Detailed implementation manners

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 - 5, an embodiment of the present invention is: an automatic welding device for the anchor bolt assembly of a power transmission tower, including a hollow base 1, a protective cover 2 is fixedly installed on the top of the hollow base 1, a rotating door 3 is rotatably installed on the inner wall of the protective cover 2, a driving device 4 is fixedly installed on the top of the inner wall of the protective cover 2, an electric telescopic rod 5 is fixedly installed at the output end of the driving device 4, and a welding device 6 is fixedly installed at the output end of the electric telescopic rod 5; a clamping device, the clamping device is arranged on the top of the hollow base 1, and the clamping device includes a motor 7, a bevel gear 8, a screw rod 9, a driven gear 10, a threaded block 11, a clamping plate 12, a sliding rod 13, a fixing plate 14, a sliding plate 15, a short rod 16, a limiting plate 17 and a placing plate 18. The four corners of the workpiece are clamped by the clamping plate 12 to prevent the workpiece from moving during the welding process, resulting in the deviation of the welding position and affecting the welding accuracy. The motor 7 is fixedly installed at the bottom of the inner part of the hollow base 1, the bevel gear 8 is fixedly installed at the output end of the motor 7, a groove is opened at the top of the hollow base 1, the screw rod 9 is rotatably installed on the inner wall of the groove, the driven gear 10 is fixedly installed on the side of the screw rod 9 away from the groove, the bevel gear 8 meshes with the surface of the driven gear 10, the threaded block 11 is threadedly installed on the circumferential surface of the screw rod 9, the clamping plate 12 is fixedly installed on the top of the threaded block 11, the sliding rod 13 slidably penetrates the surface of the clamping plate 12, the fixing plate 14 is fixedly installed on the surface of the clamping plate 12, the sliding plate 15 is slidably installed on the surface of the fixing plate 14, the short rod 16 is fixedly installed on the surface of the sliding plate 15, the limiting plate 17 is fixedly installed at the bottom of the short rod 16, and the placing plate 18 is fixedly installed on the top of the hollow base 1 to prevent the shaking generated during welding from causing unstable welding. By pressing the limiting plate 17, the welding stability is improved.

[0028] A first spring is arranged between the sliding rod 13 and the clamping plate 12 to drive the sliding rod 13 to reset through the first spring. A second spring is arranged between the sliding plate 15 and the fixing plate 14 to drive the sliding plate 15 to reset through the second spring.

[0029] A using method of an automatic welding device for the anchor bolt assembly of a power transmission tower includes the following steps:

[0030] Step 1: Place the workpiece on the placing plate 18, and cooperate with the driving device 4, the electric telescopic rod 5 and the welding device 6 to weld the workpiece;

[0031] Step 2: Rotate the motor 7 to drive the bevel gear 8 to rotate. The rotation of the bevel gear 8 drives the driven gear 10 to rotate. The rotation of the driven gear 10 drives the screw rod 9 to rotate. The rotation of the screw rod 9 drives the threaded block 11 to rotate. The rotation of the threaded block 11 drives the clamping plate 12 to move towards the workpiece, and the four corners of the workpiece are clamped by the clamping plate 12 to prevent the workpiece from moving during the welding process, resulting in the deviation of the welding position and affecting the welding accuracy;

[0032] Step 3: Move the clamping plate 12 towards the workpiece, driving the sliding rod 13 to move towards the workpiece. As the sliding rod 13 moves towards the workpiece, it contacts the workpiece, and the workpiece squeezes the sliding rod 13 to move towards the protective cover 2.

[0033] Step 4: As the sliding rod 13 moves towards the protective cover 2, it squeezes the sliding plate 15 to move downward. The downward movement of the sliding plate 15 drives the short rod 16 to move downward, and the downward movement of the short rod 16 drives the limiting plate 17 to move downward. By the downward movement of the limiting plate 17, the workpiece is squeezed to prevent the shaking during welding from causing unstable welding. By pressing with the limiting plate 17, the welding stability is improved.

[0034] During the operation of this embodiment: Place the workpiece on the placement plate 18, and cooperate with the driving device 4, the electric telescopic rod 5, and the welding device 6 to weld the workpiece. At the same time, start the motor 7. The rotation of the motor 7 drives the bevel gear 8 to rotate. The rotation of the bevel gear 8 drives the driven gear 10 to rotate. The rotation of the driven gear 10 drives the screw rod 9 to rotate. The rotation of the screw rod 9 drives the threaded block 11 to rotate. The rotation of the threaded block 11 drives the clamping plate 12 to move towards the workpiece. The four corners of the workpiece are clamped by the clamping plate 12 to prevent the workpiece from moving during welding, resulting in the deviation of the welding position and affecting the welding accuracy. At the same time, as the clamping plate 12 moves towards the workpiece, it drives the sliding rod 13 to move towards the workpiece. As the sliding rod 13 moves towards the workpiece, it contacts the workpiece, and the workpiece squeezes the sliding rod 13 to move towards the protective cover 2. As the sliding rod 13 moves towards the protective cover 2, it squeezes the sliding plate 15 to move downward. The downward movement of the sliding plate 15 drives the short rod 16 to move downward. The downward movement of the short rod 16 drives the limiting plate 17 to move downward. By the downward movement of the limiting plate 17, the workpiece is squeezed to prevent the shaking during welding from causing unstable welding. By pressing with the limiting plate 17, the welding stability is improved.

[0035] Please refer to Figures 1 - 7 , on the basis of the above embodiment, in another embodiment of the present invention, a correction device for correcting the workpiece is provided inside the placement plate 18, and a protection device is provided on the correction device. The correction device includes an L-shaped rod 191, an elastic telescopic rod 192, a correction plate 193, and a guide plate 194. The L-shaped rod 191 is fixedly installed on the top of the threaded block 11. A chute is provided on the surface of the placement plate 18, and the elastic telescopic rod 192 is fixedly installed on the inner wall of the chute. The correction plate 193 is fixedly installed at the fixed end of the elastic telescopic rod 192. The guide plate 194 is fixedly installed on the side of the correction plate 193 away from the elastic telescopic rod 192. The position of the workpiece is corrected by moving the correction plate 193 towards the workpiece to prevent the deviation of the workpiece position during placement, so that the workpiece cannot be accurately clamped during clamping, resulting in problems in subsequent welding.

[0036] The fixed end of the elastic telescopic rod 192 is fixedly installed with a push rod 195. The elastic telescopic rod 192 is fixedly installed on the inner wall of the chute. The top of the trapezoidal block 196 is fixedly installed with a support plate 197. By raising the workpiece, the operator and the equipment can better control the welding angle and position, reduce the occurrence of welding defects, and improve the strength and consistency of the weld seam.

[0037] The push rod 195 is in contact with the surface of the trapezoidal block 196. A third spring is arranged between the chute and the trapezoidal block 196 to drive the trapezoidal block 196 to reset through the third spring.

[0038] The protection device includes a connecting rod 201, an L-shaped plate 202, a limiting frame 203 and an elastic telescopic block 204. The connecting rod 201 is fixedly installed on the surface of the trapezoidal block 196. The L-shaped plate 202 is fixedly installed at one end of the connecting rod 201 away from the trapezoidal block 196. The elastic telescopic block 204 is fixedly installed on one side of the revolving door 3 close to the welding equipment 6. The limiting frame 203 is fixedly installed at the free end of the elastic telescopic block 204, making the revolving door 3 unable to be opened, preventing the user from accidentally operating to open the revolving door 3 during welding processing. The welding sparks may splash into the human eyes, posing a safety hazard.

[0039] A pull rod 205 is fixedly installed at the free end of the elastic telescopic block 204. A protective shell 206 is slidably installed on the side of the revolving door 3 away from the pull rod 205. A short plate 207 is fixedly installed on the surface of the protective shell 206. An elastic telescopic plate 208 is fixedly installed on the side of the revolving door 3 away from the pull rod 205. Through the setting of the protective shell 206, it is prevented that the operator accidentally operates to open the revolving door 3, affecting the safety of the equipment.

[0040] The L-shaped plate 202 is arranged below the limiting frame 203. A fourth spring is arranged between the revolving door 3 and the protective shell 206 to drive the protective shell 206 to reset through the fourth spring.

[0041] During the operation of this embodiment: The threaded block 11 moves towards the workpiece, driving the L-shaped rod 191 to move towards the workpiece. When the L-shaped rod 191 moves towards the workpiece, it will push the guide plate 194 towards the workpiece. When the guide plate 194 moves towards the workpiece, it will drive the correction plate 193 to move towards the workpiece. By moving the correction plate 193 towards the workpiece, the position of the workpiece is corrected to prevent the position of the workpiece from shifting during placement, which may cause inaccurate clamping of the workpiece during clamping and lead to problems in subsequent welding. At the same time, when the correction plate 193 moves towards the workpiece, it will squeeze the elastic telescopic rod 192 to move towards the workpiece. When the elastic telescopic rod 192 moves towards the workpiece, it will drive the push rod 195 to move towards the workpiece. When the push rod 195 moves towards the workpiece, it will push the trapezoidal block 196 to move upward. When the trapezoidal block 196 moves upward, it will drive the support plate 197 to move upward. By moving the support plate 197 upward, the bottom of the workpiece is supported. By raising the workpiece, the operator and the equipment can better control the welding angle and position, reduce the occurrence of welding defects, and improve the strength and consistency of the weld.

[0042] When the trapezoidal block 196 moves upward, it drives the connecting rod 201 to move upward. When the connecting rod 201 moves upward, it drives the L-shaped plate 202 to move upward. When the L-shaped plate 202 moves upward, it will be stuck into the limit frame 203. The limit frame 203 limits the L-shaped plate 202 to prevent the rotating door 3 from being opened during welding. When the user operates incorrectly, the welding sparks may fly into the human eyes, posing a safety hazard. At the same time, when emergency maintenance is required, by pulling the pull rod 205 upward, the free end of the elastic telescopic block 204 will move upward when the pull rod 205 moves upward. When the free end of the elastic telescopic block 204 moves upward, it will drive the limit frame 203 to move upward. When the limit frame 203 moves upward, the limit of the L-shaped plate 202 to the limit frame 203 will be released, enabling the rotating door 3 to be opened normally, improving the applicability of the equipment. At the same time, when the pull rod 205 needs to be pulled upward, the protective shell 206 needs to be pushed upward first. When the protective shell 206 moves upward, it will drive the short plate 207 to move upward. When the short plate 207 moves upward, it will release the free end of the elastic telescopic plate 208. The elastic telescopic plate 208 will limit the short plate 207 to prevent the fourth spring from driving the protective shell 206 to reset when the hand is released. Through the setting of the protective shell 206, it prevents the operator from operating incorrectly and causing the rotating door 3 to open, affecting the safety of the equipment.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and deformations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for power tower anchor bolt assembly, characterized in that: include: A hollow base, a protective cover is fixedly installed on the top of the hollow base, a revolving door is rotatably installed on the inner wall of the protective cover, a driving device is fixedly installed on the top of the inner wall of the protective cover, an electric telescopic rod is fixedly installed on the output end of the driving device, and a welding device is fixedly installed on the output end of the electric telescopic rod; The clamping device is arranged on the top of the hollow base, and the clamping device includes a motor, a bevel gear, a spiral rod, a slave gear, a threaded block, a clamping plate, a sliding rod, a fixed plate, a sliding plate, a short rod, a limit plate and a placement plate. The motor is fixedly mounted on the bottom of the hollow base, the bevel gear is fixedly mounted on the output end of the motor, a groove is opened on the top of the hollow base, the spiral rod is rotatably mounted on the inner wall of the groove, the slave gear is fixedly mounted on the side of the spiral rod away from the groove, the bevel gear is meshed with the surface of the slave gear, the threaded block is threadedly mounted on the circumferential surface of the spiral rod, the clamping plate is fixedly mounted on the top of the threaded block, the sliding rod slides through the surface of the clamping plate, the fixed plate is fixedly mounted on the surface of the clamping plate, the sliding plate is slidably mounted on the surface of the fixed plate, the short rod is fixedly mounted on the surface of the sliding plate, the limit plate is fixedly mounted on the bottom of the short rod, and the placement plate is fixedly mounted on the top of the hollow base; Wherein, a correction device for correcting the anchor bolts is arranged inside the placement plate, and a protective device is arranged on the correction device; The correction device comprises an L-shaped rod, an elastic telescopic rod, a correction plate and a guide plate, wherein the L-shaped rod is fixedly mounted on the top of the threaded block, a sliding groove is provided on the surface of the placement plate, the elastic telescopic rod is fixedly mounted on the inner wall of the sliding groove, the correction plate is fixedly mounted on the fixed end of the elastic telescopic rod, and the guide plate is fixedly mounted on the side of the correction plate away from the elastic telescopic rod; A push rod is fixedly mounted on the fixed end of the elastic telescopic rod, a trapezoidal block is slidably mounted on the inner wall of the slide groove, and a support plate is fixedly mounted on the top of the trapezoidal block.

2. The automatic welding device for power tower anchor bolt assembly according to claim 1 is characterized in that: A No. 1 spring is arranged between the sliding rod and the clamping plate, and a No. 2 spring is arranged between the sliding plate and the fixed plate.

3. The automatic welding device for the foundation bolt assembly of a power tower according to claim 2 is characterized in that: The push rod is in contact with the surface of the trapezoidal block, and a No. 3 spring is arranged between the slide groove and the trapezoidal block.

4. The automatic welding device for power tower anchor bolt assembly according to claim 3 is characterized in that: The protective device includes a connecting rod, an L-shaped plate, a limit frame and an elastic telescopic block. The connecting rod is fixedly mounted on the surface of the trapezoidal block, the L-shaped plate is fixedly mounted on the end of the connecting rod away from the trapezoidal block, the elastic telescopic block is fixedly mounted on a side of the revolving door close to the welding equipment, and the limit frame is fixedly mounted on the free end of the elastic telescopic block.

5. The automatic welding device for power tower anchor bolt assembly according to claim 4 is characterized in that: A pull rod is fixedly installed on the free end of the elastic telescopic block, a protective shell is slidably installed on the side of the revolving door away from the pull rod, a short plate is fixedly installed on the surface of the protective shell, and an elastic telescopic plate is fixedly installed on the side of the revolving door away from the pull rod.

6. The automatic welding device for power tower anchor bolt assembly according to claim 5 is characterized in that: The L-shaped plate is arranged below the limiting frame, and a No. 4 spring is arranged between the rotating door and the protective shell.

7. A method for using an automatic welding device for an electric power tower foundation bolt assembly, using the automatic welding device for an electric power tower foundation bolt assembly according to claim 6, characterized in that: The following steps are involved: Step 1: Place the workpiece on the placement plate and weld the workpiece by using the driving device, electric telescopic rod and welding equipment; Step 2: The motor rotates to drive the bevel gear, which drives the slave gear, which drives the screw rod, which drives the thread block, which drives the clamping plate to move toward the workpiece. The four corners of the workpiece are clamped by the clamping plate to prevent the workpiece from moving during welding, which may cause the welding position to shift and affect the welding accuracy. Step 3: The sliding rod is driven to move toward the workpiece by moving the clamping plate toward the workpiece, the sliding rod moves toward the workpiece and contacts the workpiece, and the workpiece squeezes the sliding rod to move toward the protective cover; Step 4: Move the sliding rod toward the direction of the protective cover to squeeze the sliding plate downward. The downward movement of the sliding plate drives the short rod downward, and the downward movement of the short rod drives the limit plate downward. The limit plate moves downward to squeeze the workpiece to prevent shaking during welding, which causes unstable welding. Press through the limit plate to improve the stability of welding.

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