Angle steel tower foot welding pressing plate clamp and welding device

Abstract

The invention relates to the field of angle steel tower foot welding, and discloses an angle steel tower foot welding pressing plate clamp and a welding device.The angle steel tower foot welding pressing plate clamp comprises a base, sliding blocks symmetrically arranged on the base, clamping plates and limiting pieces arranged on the sliding blocks, a rotating rod arranged at the bottom of the base and limiting blocks symmetrically arranged on the rotating rod; the welding device comprises a mounting frame, a first turntable and a second turntable which are rotationally arranged on the mounting frame, a fixed plate movably arranged on the sliding plate, and a positioning rod arranged on the sliding plate; according to the angle steel tower foot welding pressing plate clamp, the pressing plate can be effectively fixed, welding seam deformation during pressing plate welding is prevented, the welding device can fix a steel plate workpiece to the position above the pressing plate, the fixing plate and the sliding plate are contracted and fixed in the four directions of the workpiece, and the fixing mode can be automatically adjusted according to the thickness of the workpiece steel plate; the steel plate workpiece is attached to the bottom pressing plate after being fixed, then the fixing plate can be pulled out, the connecting position can be welded conveniently, and meanwhile the welded tower foot finished product can be taken out of the mounting frame.

Description

Technical Field

[0001] The invention relates to the technical field of angle steel tower foot welding, and in particular to an angle steel tower foot welding pressure plate fixture and a welding device. Background Art

[0002] Transmission line towers are tower-shaped structures used for power transmission. Their structural characteristics are that all tower types are spatial trusses, with members primarily composed of single equilateral angle steel or composite angle steel. Members are connected using crude bolts, which are used to withstand shear forces. The entire tower is composed of angle steel, connecting steel plates, and bolts. Some components, such as the tower foot, are welded together from several steel plates.

[0003] Currently, during the processing of transmission line angle steel towers, the tower foot is the only component that requires multiple parts to be welded together, and the welding efficiency directly affects the project progress. However, due to the small production batches of angle steel towers and the uncertainty of component positions, welding robots cannot be used. Most tower processing companies still rely entirely on manpower to complete the welding of the tower feet, resulting in extremely low welding efficiency. The quality of the angle steel tower feet cannot be guaranteed due to the welding skills and experience of the welders. Existing angle steel tower feet require clamping and limiting during welding. Traditional clamping equipment only applies force in a single direction during positioning, which can easily lead to weld deformation during welding. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] In view of the problems existing in the above-mentioned existing angle steel tower foot welding pressure plate fixture and welding device, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a clamp and a welding device for welding a pressure plate for an angle steel tower foot, which can effectively fix the pressure plate and prevent weld deformation during pressure plate welding.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an angle steel tower foot welding pressure plate clamp, comprising: a base, a slider symmetrically arranged on the base, a clamp arranged on the slider, a limiter arranged on the slider, a rotating rod arranged at the bottom of the base, and a limit block symmetrically arranged on the rotating rod.

[0008] The base is symmetrically provided with sliding grooves, and two sliding blocks are provided. The sliding blocks are respectively slidably arranged in the sliding grooves, and the clamping plates are fixedly arranged on the sliding blocks, and the clamping plates on the two sliding blocks are arranged opposite to each other.

[0009] The limiting member is arranged on a slider, including a mounting seat fixedly arranged on the slider, a buckle rotatably connected to the mounting seat, and a spring arranged between the mounting seat and the buckle. The buckle can be against the surface of the base. One end of the spring is fixedly connected to the mounting seat, and the other end is fixedly connected to the buckle. The spring is in a compressed state in its natural state.

[0010] As a preferred solution of the angle steel tower foot welding pressure plate clamp described in the present invention, wherein: the rotating rod is rotatably set at the bottom of the base, and threads in opposite directions are opened at both ends of the rotating rod. The limit block is sleeved on the outside of the rotating rod and is slidably connected to the rotating rod. A limit rod is also set in the limit block, and the limit rod is embedded in the thread. The limit rod is also fixedly connected to the limit block.

[0011] A welding device for an angle steel tower foot is arranged above a base, and includes a mounting frame, a first turntable and a second turntable rotatably arranged on the mounting frame, screws arranged on the first turntable and the second turntable, a sliding plate slidably arranged on the mounting frame, a fixed plate movably arranged on the sliding plate, and a positioning rod arranged on the sliding plate.

[0012] As a preferred solution of the angle steel tower foot welding device described in the present invention, wherein: the mounting frame is in a circular shape, the mounting frame is fixedly set on the base, the mounting frame is provided with a first loop and a second loop, the first loop and the second loop are arranged around the side wall of the mounting frame, and a guide rail is provided between the first loop and the second loop; there are four guide rails, the guide rails are evenly arranged on the mounting frame according to the circumference, the guide rails extend into the mounting frame and penetrate the side wall of the mounting frame, and an empty groove is opened in the center of the guide rail.

[0013] As a preferred solution of the angle steel tower foot welding device described in the present invention, the first turntable is rotatably arranged in a first loop, and two first slide grooves are provided on the first turntable, and the two first slide grooves are located on a diameter of the first turntable.

[0014] As a preferred solution of the angle steel tower foot welding device described in the present invention, wherein: the second turntable is rotatably arranged in the second loop, the second turntable is provided with two second slide grooves, the two second slide grooves are located on a diameter of the second turntable, and the diameter of the first slide groove is perpendicular to the diameter of the second slide groove.

[0015] As a preferred solution of the angle steel tower foot welding device described in the present invention, wherein: connecting blocks are rotatably provided on the first turntable and the second turntable, the screw rod passes through the two connecting blocks, the connecting blocks are connected to the screw rod through threads, and the thread directions of the two connecting blocks are opposite.

[0016] As a preferred solution of the angle steel tower foot welding device described in the present invention, wherein: the sliding plate is arranged on the guide rail, the sliding plate corresponds one-to-one to each first slide groove and the second slide groove, each of the positioning rods is in the corresponding first slide groove or second slide groove, the fixed plate is arranged in the mounting frame, and the end of the sliding plate is inserted into the fixed plate.

[0017] Beneficial effects of the present invention:

[0018] The angle steel tower foot welding pressure plate fixture in the present invention can effectively fix the pressure plate to prevent weld deformation during pressure plate welding. The welding device can fix the steel plate workpiece above the pressure plate, and the fixed plate and the sliding plate can be retracted and fixed in four directions of the workpiece. The fixing method can be automatically adjusted according to the thickness of the workpiece steel plate. After the steel plate workpiece is fixed, it fits with the bottom pressure plate, and then the fixing plate can be pulled out to facilitate welding of the connection. At the same time, the welded tower foot product can also be taken out from the mounting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the angle steel tower foot welding pressure plate fixture and welding device of the present invention.

[0021] Figure 2 This is a bottom view of the overall structure of the angle steel tower foot welding pressure plate fixture and welding device of the present invention.

[0022] Figure 3 This is a schematic diagram of the base structure of the angle steel tower foot welding pressure plate fixture of the present invention.

[0023] Figure 4 This is a schematic diagram of the slideway structure of the angle steel tower foot welding pressure plate fixture of the present invention.

[0024] Figure 5 This is a schematic diagram of the rotating rod structure of the angle steel tower foot welding pressure plate fixture of the present invention.

[0025] Figure 6 This is a schematic diagram of the limit block structure of the angle steel tower foot welding pressure plate fixture of the present invention.

[0026] Figure 7 This is a cross-sectional view of the limiting component structure of the angle steel tower foot welding pressure plate fixture of the present invention.

[0027] Figure 8 This is a schematic diagram of the limit rod structure of the angle steel tower foot welding pressure plate fixture of the present invention.

[0028] Figure 9 This is a front view of the overall structure of the angle steel tower foot welding device of the present invention.

[0029] Figure 10 This is a rear view of the overall structure of the angle steel tower foot welding device of the present invention.

[0030] Figure 11 It is a schematic diagram of the overall structure of the angle steel tower foot welding device of the present invention.

[0031] Figure 12 This is a schematic diagram of the mounting structure of the angle steel tower foot welding device of the present invention.

[0032] Figure 13 This is a side view of the mounting frame structure of the angle steel tower foot welding device of the present invention.

[0033] Figure 14 This is a schematic diagram of the internal structure of the mounting frame of the angle steel tower foot welding device of the present invention.

[0034] Figure 15 This is a rear view of the internal structure of the mounting frame of the angle steel tower foot welding device of the present invention.

[0035] Figure 16 This is an exploded view of the internal structure of the mounting frame of the angle steel tower foot welding device of the present invention.

[0036] Figure numerals: 100, base; 100a, slide; 101, slider; 102, splint; 103, limit member; 103a, mounting seat; 103b, buckle; 103c, spring; 104, rotating rod; 104a, thread; 105, limit block; 105a, limit rod; 201, mounting frame; 201a, first loop; 201b, second loop; 201c, guide rail; 201d, empty slot; 202, first turntable; 202a, first slide; 203, second turntable; 203a, second slide; 204, screw; 205, sliding plate; 206, fixed plate; 207, positioning rod; 208, connecting block. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0040] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0041] Example 1

[0042] Reference Figures 1 to 8 , which is the first embodiment of the present invention, provides an angle steel tower foot welding pressure plate clamp, which includes a base 100, a slider 101 symmetrically arranged on the base 100, a clamp 102 arranged on the slider 101, a limiter 103 arranged on the slider 101, a rotating rod 104 arranged at the bottom of the base 100, and a limit block 105 symmetrically arranged on the rotating rod 104.

[0043] The base 100 is symmetrically provided with grooves 100a, and two sliders 101 are provided. The sliders 101 are slidably disposed within the grooves 100a. Clamps 102 are fixedly disposed on the sliders 101, and the clamps 102 on the two sliders 101 are disposed opposite each other. A limiting member 103 is provided on one slider 101 and includes a mounting seat 103a fixedly disposed on the slider 101, a buckle 103b rotatably connected to the mounting seat 103a, and a spring 103c disposed between the mounting seat 103a and the buckle 103b. The buckle 103b can abut against the surface of the base 100. One end of the spring 103c is fixedly connected to the mounting seat 103a, and the other end is fixedly connected to the buckle 103b. The spring 103c is naturally compressed. The rotating rod 104 is rotatably set at the bottom of the base 100, and threads 104a in opposite directions are opened at both ends of the rotating rod 104. The limit block 105 is sleeved on the outside of the rotating rod 104 and is slidably connected to the rotating rod 104. A limit rod 105a is also set in the limit block 105, and the limit rod 105a is embedded in the thread 104a. The limit rod 105a is also fixedly connected to the limit block 105.

[0044] When the clamping plate 102 is in use, the pressure plate is placed on the base 100. When the device is activated, the two ends of the pressure plate are aligned with the clamping plate 102. When the clamping plate 102 is fixed, the buckle 103b is pressed first. The buckle 103b compresses the spring 103c, and the buckle 103b is lifted, and the buckle 103b leaves the surface of the base 100. The buckle 103b no longer limits the slider 101. While pressing the buckle 103b, the slider 101 is moved toward the center of the base 100. Since the bottom of the slider 101 is connected to the limit block 105, the movement of the slider 101 will drive the limit block 105 to move toward the center of the base 100. Since the limit rod 105a is provided on the limit block 105, the movement of the limit block 105 will drive the limit rod 105a to move synchronously. Since the limit rod 105a is embedded in the thread 104a, the movement of the limit rod 105a will drive the thread 104a to rotate. When the screw thread 104a rotates, the rotating rod 104 rotates. The other side of the rotating rod 104 is also provided with a screw thread 104a and the direction of the screw thread 104a is opposite to that of the rotating rod 104, thereby driving the limit rod 105a in the screw thread 104a at the other end to move toward the center of the rotating rod 104, that is, the limit block 105 at the other end moves synchronously toward the center of the rotating rod 104, which also drives the clamping plate 102 at the other end to move synchronously toward the center of the base 100. As a result, the two ends of the pressure plate are clamped by the clamping plate 102 at the same time. When the clamping plate 102 abuts against the side wall of the pressure plate, the slider 101 cannot move. At this time, the buckle 103b can be released, and the spring 103c is reset. The rebound force of the spring 103c pushes the buckle 103b up, so that the bottom of the buckle 103b abuts against the surface of the base 100, completing the limitation of the slider 101. The above scheme can complete the fixed clamping of the pressure plate, and then the workpiece and the pressure plate can be welded.

[0045] In order to weld the pressure plate and the workpiece, a welding device for an angle steel tower foot is also provided. The device is arranged above the base 100, and includes a mounting frame 201, a first turntable 202 and a second turntable 203 rotatably arranged on the mounting frame 201, a screw 204 arranged on the first turntable 202 and the second turntable 203, a sliding plate 205 slidably arranged on the mounting frame 201, a fixed plate 206 movably arranged on the sliding plate 205, and a positioning rod 207 arranged on the sliding plate 205.

[0046] The mounting frame 201 is annular and fixed to the base 100. It is provided with a first loop 201a and a second loop 201b, which surround the sidewalls of the mounting frame 201. A guide rail 201c is provided between the first and second loops 201a, 201b. Four guide rails 201c are provided, evenly spaced around the circumference of the mounting frame 201. The guide rails 201c extend into the mounting frame 201 and penetrate the sidewalls of the mounting frame 201. A slot 201d is defined in the center of the guide rails 201c. A first turntable 202 is rotatably disposed within the first loop 201a. Two first chute slots 202a are defined on the first turntable 202, and the two first chute slots 202a are located on a single diameter of the first turntable 202. The second turntable 203 is rotatably mounted within the second loop 201b. The second turntable 203 has two second chutes 203a, which are located on a single diameter of the second turntable 203. The diameter of the first chutes 202a is perpendicular to the diameter of the second chutes 203a. Connecting blocks 208 are rotatably mounted on the first and second turntables 202 and 203. A screw 204 passes through the two connecting blocks 208, which are connected to the screw 204 via threads. The threads of the two connecting blocks 208 are in opposite directions. A sliding plate 205 is mounted on the guide rail 201c. Each sliding plate 205 corresponds to each first chutes 202a and second chutes 203a. Each positioning rod 207 is located in the corresponding first chutes 202a or second chutes 203a. A fixed plate 206 is mounted within the mounting frame 201, with the end of the sliding plate 205 inserted into the fixed plate 206.

[0047] refer to Figures 9 to 16After the pressing plate is fixed on the base 100, the steel plate workpiece is inserted into the mounting frame 201 from above until the steel plate workpiece is against the bottom pressing plate. At this time, the steel plate workpiece is initially in contact with the pressing plate and can be fixed. The screw rod 204 can be screwed. Since the screw rod 204 is connected to the first turntable 202 and the second turntable 203 through two connecting blocks 208, when the thread on the screw rod 204 rotates, and since the thread directions of the two connecting blocks 208 are opposite, the two connecting blocks 208 will approach and move toward the center on the screw rod 204, and the connecting block 208 and the first turntable 202 and the second turntable 203 are connected. The turntable 203 is connected in rotation, so the connecting blocks 208 approach each other to cause the first turntable 202 and the second turntable 203 to rotate. The first turntable 202 and the second turntable 203 rotate in opposite directions. It should be noted that the first slide groove 202a and the second slide groove 203a provided on the first turntable 202 and the second turntable 203 need to be tilted in the direction required to ensure that when the first turntable 202 and the second turntable 203 rotate, the slide groove can make the positioning rod 207 on the sliding plate 205 move toward the center of the mounting frame 201; the first turntable 202 and the second turntable 203 are separated by the guide rail 201c. When the first turntable 202 and the second turntable 203 are separated, When the second turntable 203 rotates in the first loop 201a, the intersection between the first slide groove 202a on the first turntable 202 and the positioning rod 207 on the sliding plate 205 gradually moves toward the center of the mounting frame 201, that is, the first slide groove 202a can make the positioning rod 207 move toward the center of the mounting frame 201, and the positioning rod 207 is fixedly set on the sliding plate 205, so that the sliding plate 205 can move toward the mounting frame 201 on the guide rail 201c, that is, the two sliding plates 205 on a diameter of the mounting frame 201 approach to clamp the steel plate workpiece; when the second turntable 203 is on the second loop 201b, the intersection between the first slide groove 202a on the first turntable 202 and the positioning rod 207 on the sliding plate 205 gradually moves toward the center of the mounting frame 201, that is, the first slide groove 202a can make the positioning rod 207 move toward the center of the mounting frame 201, and the positioning rod 207 is fixedly set on the sliding plate 205, so that the sliding plate 205 can move toward the mounting frame 201 on the guide rail 201c, that is, the two sliding plates 205 on a diameter of the mounting frame 201 approach to clamp the steel plate workpiece; During rotation, the intersection between the second slide groove 203a on the second turntable 203 and the positioning rod 207 on the sliding plate 205 gradually moves toward the center of the mounting frame 201, that is, the second slide groove 203a also causes the positioning rod 207 to move toward the center of gravity of the mounting frame 201. The positioning rod 207 is also fixed on the sliding plate 205, so that the sliding plate 205 can move toward the mounting frame 201 on the guide rail 201c, that is, the other two sliding plates 205 perpendicular to the line connecting the two sliding plates 205 on the first turntable 202 also move toward the center of the mounting frame 201, clamping the steel plate workpiece in another direction.

[0048] Furthermore, when the screw 204 is turned, the first turntable 202 and the second turntable 203 are driven to rotate simultaneously, that is, the sliding plates 205 in two directions are driven to move toward the steel plate workpiece for clamping. It should be noted that when the sliding plate 205 in one direction contacts the outer wall of the steel plate workpiece in advance, the effect on the screw 204 is that the two sliding plates 205 contacting the outer wall of the steel plate workpiece will be unable to move, that is, the positioning rod 207 will jam the turntable, making it unable to rotate. At this time, the connecting block 2 08 As the screw 204 continues to turn, they will continue to approach each other, driving the first slide groove 202a and the second slide groove 203a on the first turntable 202 and the second turntable 203 to continuously fine-tune, so that the sliding plates 205 in two directions and the fixed plates 206 installed on the sliding plates 205 continue to approach the steel workpiece until they are against the steel workpiece in both directions; this clamping method is not for workpieces of a specific thickness, and can adaptively adjust the clamping and fixation of steel workpieces of different specifications, and has a wider applicability.

[0049] When the screw 204 is turned until the first turntable 202 and the second turntable 203 cannot rotate, it is loosened. At this time, the steel plate workpiece is fixed on the pressure plate of the base 100, and the weld can be welded. When a better operating space is needed, a fixed plate 206 can be pulled out from the sliding plate 205. Depending on the welding angle, one or two fixed plates 206 can be pulled out. After all welding is completed, all fixed plates 206 are removed, and the screw 204 is turned in the opposite direction to make the sliding plate 205 withdraw from the guide rail 201c. The sliding plate 205 in the mounting frame 201 does not block the workpiece, and the welded tower foot can be taken out of the mounting frame 201.

[0050] It is important to note that the construction and arrangement of the present application, as shown in various exemplary embodiments, are illustrative only. Although only a few embodiments are described in detail in this disclosure, those reading this disclosure will readily appreciate that numerous modifications are possible (e.g., variations in the size, dimensions, structure, shape, and proportions of various components, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. For example, components shown as integrally formed may be constructed from multiple parts or components, the positions of components may be inverted or otherwise altered, and the nature, number, or position of discrete components may be modified or changed. All such modifications are therefore intended to be encompassed within the scope of this invention. The order or sequence of any process or method steps may be altered or resequenced according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover structures described herein that perform the stated function, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of this invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0051] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention).

[0052] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A clamp for welding a pressure plate for an angle steel tower foot, characterized by: include: A base (100), a slider (101) symmetrically arranged on the base (100), a clamping plate (102) arranged on the slider (101), a limiting member (103) arranged on the slider (101), a rotating rod (104) arranged at the bottom of the base (100), and a limiting block (105) symmetrically arranged on the rotating rod (104); The base (100) is symmetrically provided with a slide groove (100a), two slide blocks (101) are provided, and the slide blocks (101) are respectively slidably arranged in the slide grooves (100a), and the clamping plates (102) are fixedly arranged on the slide blocks (101), and the clamping plates (102) on the two slide blocks (101) are arranged opposite to each other; The limiting member (103) is arranged on a slider (101), and comprises a mounting seat (103a) fixedly arranged on the slider (101), a buckle (103b) rotatably connected to the mounting seat (103a), and a spring (103c) arranged between the mounting seat (103a) and the buckle (103b), wherein the buckle (103b) can abut against the surface of the base (100), one end of the spring (103c) is fixedly connected to the mounting seat (103a), and the other end is fixedly connected to the buckle (103b), and the spring (103c) is in a compressed state in a natural state.

2. The angle steel tower foot welding pressure plate fixture according to claim 1, characterized in that: The rotating rod (104) is rotatably arranged at the bottom of the base (100), and threads (104a) in opposite directions are provided at both ends of the rotating rod (104). The limit block (105) is sleeved on the outside of the rotating rod (104) and is slidably connected to the rotating rod (104). A limit rod (105a) is also provided in the limit block (105), and the limit rod (105a) is embedded in the thread (104a). The limit rod (105a) is also fixedly connected to the limit block (105).

3. An angle steel tower foot welding device, using the angle steel tower foot welding pressure plate fixture as claimed in claim 2, characterized in that: The device is arranged above the base (100), and comprises a mounting frame (201), a first turntable (202) and a second turntable (203) rotatably arranged on the mounting frame (201), a screw (204) arranged on the first turntable (202) and the second turntable (203), a sliding plate (205) slidably arranged on the mounting frame (201), a fixed plate (206) movably arranged on the sliding plate (205), and a positioning rod (207) arranged on the sliding plate (205).

4. The angle steel tower foot welding device according to claim 3, characterized in that: The mounting frame (201) is annular in shape and is fixedly mounted on the base (100). A first loop (201a) and a second loop (201b) are provided on the mounting frame (201). The first loop (201a) and the second loop (201b) are arranged around the side wall of the mounting frame (201). A guide rail (201c) is provided between the first loop (201a) and the second loop (201b). Four guide rails (201c) are provided. The guide rails (201c) are evenly arranged on the mounting frame (201) along a circumference. The guide rails (201c) extend into the mounting frame (201) and penetrate the side wall of the mounting frame (201). An empty slot (201d) is provided in the center of the guide rail (201c).

5. The angle steel tower foot welding device according to claim 4, characterized in that: The first turntable (202) is rotatably arranged in the first loop (201a), and two first chutes (202a) are provided on the first turntable (202), and the two first chutes (202a) are located on a diameter of the first turntable (202).

6. The angle steel tower foot welding device according to claim 5, characterized in that: The second turntable (203) is rotatably arranged in the second loop (201b), and the second turntable (203) is provided with two second chutes (203a), the two second chutes (203a) are located on a diameter of the second turntable (203), and the diameter of the first chutes (202a) is perpendicular to the diameter of the second chutes (203a).

7. The angle steel tower foot welding device according to claim 6, characterized in that: Connecting blocks (208) are rotatably provided on the first rotating disk (202) and the second rotating disk (203), the screw rod (204) passes through the two connecting blocks (208), the connecting blocks (208) are connected to the screw rod (204) via a thread, and the thread directions of the two connecting blocks (208) are opposite.

8. The angle steel tower foot welding device according to claim 7, characterized in that: The sliding plate (205) is arranged on the guide rail (201c), and the sliding plate (205) corresponds to each first slide groove (202a) and the second slide groove (203a) one by one. Each positioning rod (207) is located in the corresponding first slide groove (202a) or second slide groove (203a). The fixed plate (206) is arranged in the mounting frame (201), and the end of the sliding plate (205) is inserted into the fixed plate (206).

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