Flexible Rod-forming Tooling for Round-tenon Tower Body and Machining Method for Main Chord Member

Abstract

The present invention provides a flexible tooling for forming rods of a round-tenon tower body and a processing method for main chord members. The main chord members include main chord steel pipes and male joints and female joints at both ends. The flexible tooling for forming rods of a round-tenon tower body includes a chassis and a male joint positioning seat, a female joint positioning seat assembly and a step positioning seat detachably arranged on the chassis. The male joint positioning seat is used for positioning and supporting the male joint. The female joint positioning seat assembly is used for positioning and supporting the female joint. The step positioning seat is used for positioning the main chord steel pipe and the steps on the main chord steel pipe. The step positioning seat, the male joint positioning seat and the female joint positioning seat assembly cooperate to keep the axes of the male joint, the female joint and the main chord steel pipe coincident. The step positioning seat is located between the male joint positioning seat and the female joint positioning seat. When processing the main chord members, the flexible tooling for forming rods of a round-tenon tower body in the present invention is used for auxiliary placement and assembly, which improves the placement and assembly efficiency, has accurate positioning, and reduces the manual repeated adjustment and placement cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of machining, and particularly relates to a flexible rod-forming tooling for a round-tenon tower body and a method for machining a chord member. Background Art

[0002] The chord member is the most important component of the standard section, transition section, and foundation section. The chord members of different standard sections, transition sections, and foundation sections are different. The lengths, sizes, and step positioning dimensions of the chord members of different standard sections, transition sections, and foundation sections are all different. The chord member is composed of a male joint, a steel pipe, steps, and a female joint. The weld between the joint and the steel pipe is a full penetration weld, and the weld requirements are high. Pre-drilled holes have been made in the male and female joints before riveting and welding, so the holes are used as the positioning reference for the male and female joints of the chord member. At the same time, the steel pipe of the chord member is a welded pipe, and there is a high-frequency weld on the inner side of the welded pipe, which can be seen in appearance. To ensure product consistency and aesthetic requirements, the process requires that the high-frequency weld be oriented inward at 45 degrees during the overall riveting and welding of the standard section, transition section, and foundation section. Therefore, there are requirements for the angles between the holes of the male and female joints and the steps, and between the holes of the male and female joints and the high-frequency weld. When the existing chord members are processed, they are all manually arranged, with inaccurate dimensions, slow efficiency, and the dimensional quality of the welds between the male and female joints and the steel pipe cannot be guaranteed. Summary of the Invention

[0003] The main object of the present invention is to provide a flexible rod-forming tooling for a round-tenon tower body and a method for machining a chord member, aiming to solve the technical problems of inaccurate positioning and low efficiency caused by manual arrangement during the machining of chord members.

[0004] To achieve the above object, the present invention provides a flexible rod-forming tooling for a round-tenon tower body for the arrangement and positioning of chord members. The chord member includes a chord steel pipe and male and female joints at both ends. The flexible rod-forming tooling for a round-tenon tower body includes a chassis and the following components detachably provided on the chassis:

[0005] A male joint positioning seat for positioning and supporting the male joint;

[0006] A female joint positioning seat assembly for positioning and supporting the female joint;

[0007] A step positioning seat for positioning the chord steel pipe and the steps on the chord steel pipe. The step positioning seat, the male joint positioning seat, and the female joint positioning seat assembly cooperate to keep the axes of the male joint, the female joint, and the chord steel pipe coincident;

[0008] Wherein, the step positioning seat is located between the male joint positioning seat and the female joint positioning seat assembly.

[0009] In an embodiment of the present invention, the female joint positioning seat assembly includes two female joint positioning seats. One of the female joint positioning seats and the male joint positioning seat are respectively arranged near both ends of the chassis, and the other female joint positioning seat is located between one of the female joint positioning seats and the male joint positioning seat and is used to position the female joint of the transition section.

[0010] In an embodiment of the present invention, the male joint positioning seat includes a first support. An upwardly open first positioning groove is provided on the first support. The male joint is adapted to the first positioning groove and can be engaged in the first positioning groove. The first positioning groove is provided with first positioning and mounting holes in both the horizontal direction and the vertical direction, and the axes of the first positioning and mounting holes and the mounting holes of the male joint coincide in the horizontal direction and the vertical direction respectively.

[0011] In an embodiment of the present invention, the female joint positioning seat includes a second support. Two upwardly open second positioning grooves are provided on the second support. The two second positioning grooves are arranged at intervals in the horizontal direction. The second positioning groove is provided with second positioning and mounting holes in both the horizontal direction and the vertical direction, and the axes of the second positioning and mounting holes and the mounting holes of the female joint coincide in the horizontal direction and the vertical direction respectively.

[0012] In an embodiment of the present invention, the step positioning seat includes a third support and step positioning parts extending outward from both side faces of the third support. An upwardly open third positioning groove is provided on the top end face of the third support. The step positioning parts are used for detachably connecting the steps. The third positioning groove is adapted to and engaged with the main chord steel pipe. The groove wall of the third positioning groove is provided with third positioning and mounting holes in both the horizontal direction and the vertical direction.

[0013] In an embodiment of the present invention, the positioning end face of the step positioning part and the third positioning and mounting holes are both machined after welding.

[0014] In an embodiment of the present invention, the first positioning groove, the second positioning groove, and the third positioning groove are all semi-circular groove structures and their central axes are on the same horizontal line.

[0015] In an embodiment of the present invention, the round tenon tower body flexible rod forming tooling further includes a bolt positioning assembly arranged on the chassis, and the bolt positioning assembly is used to fixedly support the main chord steel pipe.

[0016] In an embodiment of the present invention, a main chord rod processing method is also proposed. The round tenon tower body flexible rod forming tooling as described above is used for auxiliary swing and positioning. The main chord rod processing method includes the steps:

[0017] S10: Place the main chord steel pipe into the third positioning groove of the third support and adjust the positions of both ends of the main chord steel pipe;

[0018] S20: Place the male connector and the female connector into the male connector positioning seat and the female connector positioning seat respectively. Insert positioning pin shafts into the first positioning installation hole and the second positioning installation hole to fix the male connector and the female connector. At the same time, manually adjust the position of the main chord steel pipe so that the distances between the main chord steel pipe and the male connector and the female connector are adjusted to a preset width.

[0019] S30: Spot-weld the male connector and the female connector to the main chord steel pipe respectively.

[0020] S40: Place the spot-welded main chord on the support rollers, turn on the intermediate frequency preheating, and preheat the male connector, the female connector and the weld seam.

[0021] S50: Feed the preheated main chord into the automatic welding equipment for automatic welding.

[0022] In the embodiment of the present invention, between the step S30 and the step S40, the following is further included:

[0023] After spot-welding, lean a square against the outside of the main chord steel pipe and the female connector to check the gap, and confirm that the straightness of the entire welded main chord meets the preset requirements.

[0024] If the straightness does not meet the preset requirements, adjust it by knocking the female connector until the straightness of the entire main chord meets the preset requirements.

[0025] Through the above technical solutions, the round tenon tower body flexible rod-forming tooling provided by the embodiment of the present invention has the following beneficial effects:

[0026] Before welding the main chord, first place the main chord steel pipe, the male connector and the female connector of the main chord on the positioning tooling respectively; support the male connector through the male connector positioning seat of the positioning tooling, position and support the female connector through the female connector positioning seat assembly, and the step positioning seat positions the main chord steel pipe and the steps on the main chord steel pipe respectively. In this way, the step positioning seat, the male connector positioning seat and the female connector positioning seat assembly cooperate to keep the axes of the male connector, the female connector and the main chord steel pipe coincident, so as to improve the axial positioning accuracy; the present invention replaces the manual placement method in the prior art by adopting a placement positioning tooling, and improves the placement efficiency and positioning accuracy.

[0027] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings are used to provide an understanding of the present invention and form a part of the specification, and are used to explain the present invention together with the following specific implementation manners, but do not constitute a limitation to the present invention. In the drawings:

[0029] Figure 1 It is a schematic assembly structure diagram of the flexible rod-forming tooling for the round-tenon tower body according to the first embodiment of the present invention;

[0030] Figure 2 It is a schematic structure diagram of the flexible rod-forming tooling for the round-tenon tower body according to the second embodiment of the present invention;

[0031] Figure 3 It is a schematic positioning structure diagram of the male joint positioning seat in the first embodiment of the flexible rod-forming tooling for the round-tenon tower body according to the present invention;

[0032] Figure 4 It is a schematic positioning structure diagram of the male joint positioning seat in the second embodiment of the flexible rod-forming tooling for the round-tenon tower body according to the present invention;

[0033] Figure 5 Schematic positioning structure diagram of the female joint positioning seat in the flexible rod-forming tooling for the round-tenon tower body according to the present invention;

[0034] Figure 6 Schematic positioning structure diagram of the step positioning seat in the flexible rod-forming tooling for the round-tenon tower body according to the present invention;

[0035] Figure 7 It is a schematic processing structure diagram during the preheating of the main chord weld;

[0036] Figure 8 It is a front view schematic diagram during the automatic welding of the main chord;

[0037] Figure 9 It is a right view schematic diagram during the automatic welding of the main chord.

[0038] Explanation of reference numerals

[0039] Label Name Label Name 10 Underframe 50 Positioning pin shaft 20 Male joint positioning seat 60 Main chord 21 First support 61 Male joint 22 First positioning groove 62 Female joint 30 Female joint positioning seat 63 Main chord steel pipe 31 Second support 64 Step 32 Second positioning groove 70 Bolt positioning assembly 40 Step positioning seat 80 Support roller 41 Third support 90 Intermediate frequency preheating mechanism 42 Step positioning part 91 Automatic welding equipment 43 Third positioning groove Detailed description of specific embodiments

[0040] The following is a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0041] To solve the problem of riveting and welding positioning of various main chords, and to ensure the coaxiality, straightness, hole distance dimensions of male and female joints, step dimensions, included angle between holes and high-frequency welds, and included angle between holes and steps of various main chords, a flexible rod-forming tooling for the round-tenon tower body is designed. The following describes the flexible rod-forming tooling for the round-tenon tower body according to the present invention with reference to the accompanying drawings.

[0042] Such as Figure 1 And Figure 2As shown, in an embodiment of the present invention, a flexible tooling for forming a round-tenon tower body into a rod is provided. The main chord 60 includes a main chord steel pipe 63 and male joints 61 and female joints 62 at both ends. The flexible tooling for forming a round-tenon tower body into a rod includes a chassis 10 and the following detachably disposed on the chassis 10:

[0043] A male joint positioning seat 20 for positioning and supporting the male joint 61;

[0044] A female joint positioning seat assembly for positioning and supporting the female joint 62;

[0045] A step positioning seat 40 for positioning the main chord steel pipe 63 and the steps 64 on the main chord steel pipe 63. The step positioning seat 40, the male joint positioning seat 20, and the female joint positioning seat assembly cooperate to keep the axes of the male joint 61, the female joint 62, and the main chord steel pipe 63 coincident;

[0046] Among them, the step positioning seat 40 is located between the male joint positioning seat 20 and the female joint positioning seat assembly.

[0047] Among them, the chassis 10, the male joint positioning seat 20, the female joint positioning seat assembly, and the step positioning seat 40 are all integrally machined to improve the overall straightness of the main chord 60. This flexible tooling for forming a round-tenon tower body into a rod can adapt to the assembly of the main chord 60 products of all existing round-tenon transition joints, standard joints, and foundation joints, with flexible design, reducing the floor area of the tooling by about 80 m 2 . And when using this flexible tooling for forming a round-tenon tower body into a rod to assemble each component of the main chord 60, compared with manual assembly, the positioning is more accurate, and the cost of manual repeated small-scale assembly can be reduced by 50%.

[0048] In an embodiment of the present invention, the female joint positioning seat assembly includes two female joint positioning seats 30. One of the female joint positioning seats 30 and the male joint positioning seat 20 are respectively arranged near both ends of the chassis 10, and the other female joint positioning seat 30 is located between the left female joint positioning seat 30 and the male joint positioning seat 20 and is used to position the female joint 62 of the transition joint. For different types of main chords 60, different female joint positioning seats 30 are selected for positioning according to the length of the main chord 60. As Figure 1 shown, the left female joint positioning seat 30 is used to position the female joint 62 of the transition joint, and the right female joint positioning seat 30 is used to position the female joint 62 of the foundation joint; when positioning the transition joint, the male joint 61 of the transition joint is positioned by the leftmost male joint positioning seat 20, and the female joint 62 of the transition joint is positioned by the left female joint positioning seat 30; when positioning the foundation joint, the male joint 61 of the foundation joint is positioned by the leftmost male joint positioning seat 20, and the female joint 62 of the foundation joint is positioned by the right female joint positioning seat 30.

[0049] AsFigure 3 and Figure 4 As shown, the male joint positioning seat 20 includes a first support 21. A first positioning groove 22 with an upward opening is formed on the first support 21. The male joint 61 is adapted to the first positioning groove 22 and can be engaged therein. First positioning mounting holes are formed on both side walls of the first positioning groove 22 along the horizontal direction, and a first positioning mounting hole is also formed on the bottom wall of the first positioning groove 22. The axes of the first positioning mounting holes and the mounting holes of the male joint 61 coincide in the horizontal and vertical directions respectively.

[0050] Among them, the male joint positioning seat 20 is connected to the chassis 10 through bolts and positioning pins. By providing the first positioning mounting holes in both the horizontal and vertical directions, positioning of the male joint 61 in two directions can be achieved. As Figure 3 shown, when positioning the male joint 61 in the horizontal direction, the male joint 61 is inserted from the upper opening of the first positioning groove 22 so that the centers of the first positioning groove 22 and the male joint 61 coincide. A positioning pin shaft 50 extending in the horizontal direction is sequentially passed through the first positioning mounting holes arranged horizontally and the mounting holes of the male joint 61 to fix the male joint 61 in the first positioning groove 22. As Figure 4 shown, alternatively, a positioning pin shaft 50 extending in the vertical direction is sequentially passed through the first positioning mounting hole on the bottom wall of the first positioning groove 22 and the mounting holes of the male joint 61, so that fixation between the male joint 61 and the bottom of the first positioning groove 22 can also be achieved. During disassembly, the positioning pin shaft 50 is directly removed, and then the male joint 61 is disengaged from the first positioning groove 22.

[0051] As Figure 5 shown, the female joint positioning seat 30 includes a second support 31. Two second positioning grooves 32 with upward openings are formed on the second support 31. The two second positioning grooves 32 are arranged at intervals along the horizontal direction. Second positioning mounting holes are formed in the second positioning grooves 32 along both the horizontal and vertical directions. The axes of the second positioning mounting holes and the mounting holes of the female joint 62 coincide in the horizontal and vertical directions respectively. Among them, the positioning principle of the female joint positioning seat 30 for the female joint 62 is the same as that of the male joint positioning seat 20, and will not be elaborated here one by one.

[0052] As Figure 6 shown, the step positioning seat 40 includes a third support 41 and step positioning portions 42 extending outward from both side faces of the third support 41. A third positioning groove 43 with an upward opening is formed on the top end face of the third support 41. The step positioning portions 42 are used for detachably connecting the steps 64. The third positioning groove 43 is adapted to and engaged with the main chord steel pipe 63. Third positioning mounting holes are formed on the groove wall of the third positioning groove 43 along both the horizontal and vertical directions.

[0053] During positioning, the step 64 of the main chord 60 is directly connected to the step positioning part 42 by a pin shaft. At the same time, the main chord steel pipe 63 is engaged in the third positioning groove 43 of the third support 41. Then, a positioning pin shaft 50 that can be horizontal or vertical is used to connect the groove wall of the first positioning groove 22 and the main chord steel pipe 63 to fix the positions of the step 64 and the main chord steel pipe 63. Among them, the two step positioning parts 42 are respectively located on the left and right sides of the third support 41. The one on the left can be used to position the step 64 on the left, and the step positioning part 42 on the right can be used to position the step 64 on the right.

[0054] In the embodiment of the present invention, the positioning end face and the third positioning mounting hole of the step positioning part 42 are both machined after welding, making the axial positioning dimension more accurate.

[0055] In the embodiment of the present invention, the first positioning groove 22, the second positioning groove 32, and the third positioning groove 43 are all semi-circular groove structures and their central axes are on the same horizontal line. This can ensure that the main chord steel pipe 63, the male joint 61, and the female joint 62 are coaxially arranged, so as to ensure that the axial positioning dimension is more accurate and provide better guarantee for subsequent welding.

[0056] In the embodiment of the present invention, the round tenon tower body flexible forming rod tooling further includes a bolt positioning component 70 provided on the chassis 10, and the bolt positioning component 70 is used to fixedly support the main chord steel pipe 63.

[0057] Among them, the bolt positioning component 70 includes a bracket, a bolt pair connecting the bracket and the chassis 10, and a positioning pin. In order to further fix and position the main chord steel pipe 63, while the main chord steel pipe 63 is positioned in the third positioning groove 43, the bolt positioning component 70 is used to further support the main chord steel pipe 63 to make the axial positioning dimension of the main chord steel pipe 63 more accurate.

[0058] In the embodiment of the present invention, a main chord processing method is also proposed. The above-mentioned round tenon tower body flexible forming rod tooling is used for auxiliary swing and positioning. The main chord processing method includes the steps:

[0059] S10: Place the main chord steel pipe 63 into the third positioning groove 43 of the third support 41 and adjust the positions of both ends of the main chord steel pipe 63;

[0060] S20: Respectively place the male joint 61 and the female joint 62 into the male joint positioning seat 20 and the female joint positioning seat 30, insert positioning pin shafts 50 into the first positioning mounting hole and the second positioning mounting hole to fix the male joint 61 and the female joint 62. At the same time, manually adjust the position of the main chord steel pipe 63 to adjust the distance between the main chord steel pipe 63 and the male joint 61 and the female joint 62 to a preset width;

[0061] S30: Spot-weld the male connector 61 and the female connector 62 to the main chord steel pipe 63 respectively for fixation;

[0062] S40: Place the spot-welded main chord 60 on the support rollers 80, turn on the intermediate frequency preheating, and preheat the male connector 61 and the female connector 62 at the weld;

[0063] S50: Feed the preheated main chord 60 into the automatic welding equipment 91 for automatic welding.

[0064] In the embodiment of the present invention, between step S30 and step S40, it further includes:

[0065] After spot welding, lean a square against the outside of the main chord steel pipe 63 and the female connector 62 to check the gap, and confirm that the straightness of the entire welded main chord 60 meets the preset requirements;

[0066] If the straightness does not meet the preset requirements, adjust it by knocking the female connector 62 until the straightness of the entire main chord 60 meets the preset requirements.

[0067] For different types of main chords 60, such as the positioning methods of standard sections, base sections or transition sections are similar, and the processing methods are the same, and the following process can be adopted:

[0068] Specifically, when processing the main chord 60, first, place the main chord steel pipe 63 into the third positioning groove 43 of the third support 41 and adjust the position. Then, place the male connector 61 and the female connector 62 into the male connector positioning seat 20 and the female connector positioning seat 30 respectively, and insert them into both ends of the main chord steel pipe 63. Insert the positioning pin shafts 50 into the male connector positioning seat 20 and the female connector positioning seat 30 respectively to fix the male connector 61 and the female connector 62. At the same time, manually adjust the position of the main chord steel pipe 63 to adjust the gap between the main chord steel pipe 63 and the male connector 61 and the female connector 62 to 3 mm (verified by experiments that when the gap is 3 mm, the welding effect is the best), and the gaps on both sides are uniform. Secondly, spot-weld the male connector 61 and the female connector 62 to the main chord steel pipe 63. First, spot-weld two points at the upper end. By inserting a crowbar and rotating the mounting holes of the male connector 61 and the female connector 62, adjust the two points at the lower end to the upper end and then spot-weld. After spot welding, lean a square against the outside of the main chord and the female connector 62 to check the gap and ensure the overall straightness. If it does not meet the standard, it needs to be adjusted by knocking the connector. Further, such as Figures 7 to 9As shown, place the completed main chord 60 of spot welding on the support rollers 80, turn on the intermediate frequency preheating mechanism 90 for intermediate frequency preheating, and preheat the male joint 61 and the female joint 62 at the weld (the joint material is Q460C, and the weld needs to be preheated to ensure full penetration of the weld). After the preheating is completed at 120 degrees, quickly push the preheated main chord 60 into the automatic welding equipment 91. Finally, after the preheated main chord 60 is clamped by the clamping and rotating mechanism of the automatic welding equipment 91, the automatic welding equipment 91 uses double welding torches to automatically weld the preheated main chord 60. By using an automated welding method to process the main chord 60, the efficiency is increased by 50% compared to manual welding, and the product consistency is high, improving the quality stability of the product.

[0069] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0070] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0072] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A flexible rod-forming tooling for a round-tenon tower body, which is used for the pendulum placement and positioning of the main chord. The main chord includes a main chord steel pipe and male and female joints at both ends, and is characterized in that, The flexible rod-forming tooling for the round-tenon tower body includes a chassis and the following components detachably arranged on the chassis: A male joint positioning seat for positioning and supporting the male joint. The male joint positioning seat includes a first support, and a first positioning groove with an upward opening is formed on the first support. The first positioning groove is provided with first positioning and mounting holes in both the horizontal and vertical directions. A female joint positioning seat assembly for positioning and supporting the female joint. The female joint positioning seat assembly includes two female joint positioning seats. Each female joint positioning seat includes a second support, and two second positioning grooves arranged at intervals in the horizontal direction are formed on the second support. The second positioning grooves are provided with second positioning and mounting holes in both the horizontal and vertical directions. A step positioning seat for positioning the main chord steel pipe and the steps on the main chord steel pipe. The step positioning seat, the male joint positioning seat, and the female joint positioning seat assembly cooperate to keep the axes of the male joint, the female joint, and the main chord steel pipe coincident. Among them, the step positioning seat is located between the male joint positioning seat and the female joint positioning seat assembly. The step positioning seat includes a third support and step positioning parts extending outward from both side faces of the third support. A third positioning groove is formed on the top end face of the third support, and the groove wall of the third positioning groove is provided with third positioning and mounting holes in both the horizontal and vertical directions.

2. The flexible rod-forming tooling for a round-tenon tower body according to claim 1, wherein One of the female joint positioning seats (30) and the male joint positioning seat (20) are respectively arranged near both ends of the chassis (10), and the other female joint positioning seat (30) is located between one female joint positioning seat (30) and the male joint positioning seat (20) and is used to position the female joint (62) of the transition section.

3. The flexible rod-forming tooling for the round-tenon tower body according to claim 1, characterized in that, The male joint (61) is adapted to the first positioning groove (22) and can be engaged in the first positioning groove (22). The axes of the first positioning and mounting holes and the mounting holes of the male joint (61) coincide in the horizontal and vertical directions respectively.

4. The flexible rod-forming tooling for the round-tenon tower body according to claim 1, wherein The second positioning groove (32) has an upward opening. The axes of the second positioning and mounting holes and the mounting holes of the female joint (62) coincide in the horizontal and vertical directions respectively.

5. The flexible rod-forming tooling for a round-tenon tower body according to claim 1, characterized in that, The second positioning groove (32) has an upward opening. The step positioning part (42) is used for detachably connecting the step (64), and the third positioning groove (43) is adapted to and engaged with the main chord steel pipe (63).

6. The flexible rod-forming tooling for a round-tenon tower body according to claim 1, wherein The positioning end face of the step positioning part (42) and the third positioning and mounting holes are all machined after welding.

7. The flexible rod-forming tooling for a round-tenon tower body according to claim 1, characterized in that, The first positioning groove (22), the second positioning groove (32), and the third positioning groove (43) are all of semi-circular groove structures and their central axes are on the same horizontal line.

8. The flexible rod-forming tooling for the round-tenon tower body according to any one of claims 1 to 7, characterized in that, The flexible rod-forming tooling for the round-tenon tower body further includes a bolt positioning assembly (70) arranged on the chassis (10). The bolt positioning assembly (70) is used for fixedly supporting the main chord steel pipe (63).

9. A method for processing a main chord member, characterized in that, When using the flexible rod-forming tooling for the round-tenon tower body according to any one of claims 1 to 8 for auxiliary swinging and positioning, the processing method of the main chord rod includes the steps: S10: Place the main chord steel pipe (63) into the third positioning groove (43) of the third support (41), and adjust the positions of both ends of the main chord steel pipe (63). S20: Place the male joint (61) and the female joint (62) into the male joint positioning seat (20) and the female joint positioning seat (30) respectively. Insert positioning pin shafts (50) into both the first positioning installation hole and the second positioning installation hole to fix the male joint (61) and the female joint (62). At the same time, manually adjust the position of the main chord steel pipe (63) so that the distances between the main chord steel pipe (63) and the male joint (61) and the female joint (62) are adjusted to a preset width. S30: Spot-weld the male joint (61) and the female joint (62) to the main chord steel pipe (63) respectively. S40: Place the spot-welded main chord (60) on the support rollers (80), turn on the intermediate frequency preheating, and preheat the male joint (61) and the female joint (62) at the weld. S50: Feed the preheated main chord (60) into the automatic welding equipment (91) for automatic welding.

10. The method for processing the main chord rod according to claim 9, wherein, Between the step S30 and the step S40, it further includes: After spot-welding, lean a square against the outside of the main chord steel pipe (63) and the female joint (62) to check the gap, and confirm that the straightness of the entire welded main chord (60) meets the preset requirements. If the straightness does not meet the preset requirements, adjust it by knocking the female joint (62) until the straightness of the entire main chord (60) meets the preset requirements.

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