Wind power tower drum safety processing structure and method thereof

Abstract

This invention relates to the field of wind turbine technology and discloses a safe processing structure for wind turbine towers, including a pre-embedded base, a main tower tube, and a positioning mechanism and a fixing mechanism disposed inside the main tower tube. The top surface of the pre-embedded base is provided with an annular positioning groove and a central positioning insertion hole. The main tower tube can be hoisted and placed above the pre-embedded base. The main tower tube is internally fixedly connected with a first fixing plate and a second fixing plate, and internally fixedly connected with a limit block. The positioning mechanism is used to limit the main tower tube before installation. The fixing mechanism is used to drive the circumferential locking block to extend and engage with the annular positioning groove after centering, thereby completing circumferential locking and fixing. Combined with the self-locking characteristics of the inclined wedge, the locking stability is strong and can resist welding vibration and external impact interference, effectively eliminating the hidden dangers of tipping over and displacement during the processing of the tower section, and significantly improving the positioning accuracy and operational safety of the tower processing station.

Description

Technical Field

[0001] This invention relates to the field of wind turbine technology, and specifically provides a safe processing structure and method for wind turbine towers. Background Technology

[0002] During the processing, assembly, and welding of individual wind turbine tower sections in the workshop, a special base is usually required for temporary positioning. Traditional fixing methods generally use pad supports combined with circumferential bolts for tightening and limiting. However, the tower's center of gravity is relatively high, and the contact surface of the pad supports is narrow. These supports are prone to displacement and tilting due to welding vibrations and external impacts, posing a safety hazard of tower overturning. Manually tightening the adjusting bolts one by one is inefficient, and the threads are prone to corrosion and jamming in dusty and humid conditions. Disassembly and assembly are difficult, the coaxiality of the tower is hard to control, and the positioning accuracy is poor, which is not conducive to the standardized, high-precision, and safe processing and production of wind turbine towers.

[0003] Currently, tower positioning bases with snap-fit ​​limiting structures are available on the market. However, most of these snap-fit ​​structures rely on manual pushing of the locking blocks to complete the locking and positioning. They cannot utilize the self-weight of the tower when it is lowered to achieve automatic linkage snap-fit. The operation steps are cumbersome, and there is a risk of collision when manual operation is carried out at close range. The snap-fit ​​interlocking structure lacks a centering and correction design, which makes it easy for the tower to be eccentric when it is lowered, resulting in overturning moment. The local shear load of the locking blocks is too large, which can easily cause deformation and failure. They cannot be unlocked synchronously during hoisting and disassembly. The degree of automation is low, and the overall structural stability and operational safety have obvious defects. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a safe processing structure and method for wind turbine towers, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a safe processing structure for wind turbine towers, comprising a pre-embedded base, a main tower tube, and a positioning mechanism and a fixing mechanism disposed inside the main tower tube. The top surface of the pre-embedded base is provided with an annular positioning groove and a central positioning insertion hole. The main tower tube can be hoisted and placed above the pre-embedded base. A first fixing plate and a second fixing plate are fixedly connected inside the main tower tube. A limit block is fixedly connected inside the main tower tube. The positioning mechanism is used to limit the main tower tube before installation. The fixing mechanism is used to fix the main tower tube after it has been limited by the positioning mechanism.

[0006] Preferably, the fixing mechanism includes a first sliding disc slidably connected inside the main tower tube, a sliding push rod fixedly connected to the lower end of the first sliding disc, a second sliding disc slidably connected inside the main tower tube, a first limiting groove being formed inside the second sliding disc, a first sliding block slidably connected inside the first limiting groove, a first fixing block fixedly connected to the lower surface of the first sliding block, a telescopic connecting rod fixedly connected to the upper surface of the first sliding block, a pushing telescopic rod fixedly connected to the side surface of the telescopic connecting rod, and a pushing spring sleeved on the outer surface of the pushing telescopic rod.

[0007] Preferably, the second fixed plate has a second limiting groove inside, a second sliding block is slidably connected inside the second limiting groove, a first connecting rod is rotatably connected inside the second sliding block, a first spring is sleeved on the outer surface of the sliding push rod, and a fourth limiting groove is opened on the side surface of the first sliding disc.

[0008] Preferably, the positioning mechanism includes a central positioning shaft slidably connected inside the first fixed plate, a second spring sleeved on the outer surface of the central positioning shaft, a third spring fixedly connected to the upper end of the central positioning shaft, a sliding cover sleeved on the outer surface of the upper end of the central positioning shaft, a second connecting rod rotatably connected inside the sliding cover, a third limiting groove opened inside the first fixed plate, a third sliding block slidably connected inside the third limiting groove, and a third connecting rod rotatably connected inside the lower end of the third sliding block.

[0009] Preferably, the bottom end of the sliding push rod is provided with a guide cone. When the main tower tube is lowered, the guide cone is inserted into the center positioning hole to achieve automatic centering. The bottom of the outer end of the first sliding block is provided with a wedge-shaped guide surface, and the top inner surface of the first fixed block is provided with a matching wedge-shaped inclined surface. After the first sliding block is inserted into the slot, the wedge-shaped surfaces fit together to form a wedge-tight self-locking mechanism. The greater the weight of the tower tube, the stronger the clamping force.

[0010] Preferably, the second sliding block and the first sliding block are fixedly connected by a telescopic connecting rod. The pushing telescopic rod is arranged radially, with one end fixed to one side of the telescopic connecting rod and the other end abutting against the inner wall of the main tower tube, to provide the restoring force for the retraction of the first sliding block and the first fixed block.

[0011] Preferably, the first sliding disk and the second sliding block are connected by a first connecting rod, six first fixing blocks are provided and evenly distributed below the second sliding disk, and the first spring is provided between the second fixing plate and the second sliding disk.

[0012] Preferably, the third spring is disposed between the sliding cover and the central positioning shaft, the second spring is disposed between the first fixed plate and the first sliding disk, the sliding cover and the third sliding block are connected by a second connecting rod, and the third sliding block and the first sliding disk are connected by a third connecting rod.

[0013] Preferably, a top sliding plate is slidably connected inside the main tower tube, and a power connection box is fixedly connected to the upper surface of the top sliding plate. An upper connecting tower tube is also connected above the main tower tube, and the two tower sections are connected by flange bolts. The fixing mechanism and the positioning mechanism are both located inside the lower main tower tube.

[0014] A method for safely fabricating wind turbine towers includes the following steps:

[0015] S1 hoisting and alignment: hoist the main tower pipe to the top of the pre-embedded base and adjust its position so that the sliding push rod is aligned with the center positioning hole of the base;

[0016] S2 Positioning Linkage: The main tower tube is slowly lowered. After the bottom end of the sliding push rod contacts the pre-embedded base, it moves upward relative to the base, driving the first sliding plate to move upward. Through the first connecting rod, all the first sliding blocks are pushed outward synchronously and locked into the first fixed block, completing the automatic centering and circumferential locking of the tower section.

[0017] S3 Processing Operation: After the tower section is fixed, welding, assembly, and flaw detection processing procedures are carried out;

[0018] S4 Lifting, Unlocking, and Resetting: After processing, the main tower tube is lifted upwards. The downward pressure on the sliding push rod disappears, and the second and third springs of the positioning mechanism release their elasticity, driving the sliding push rod and the first sliding plate to descend and reset. The spring pushes the first fixed block to retract inwards synchronously, disengaging from the annular positioning slot and releasing the lock. During the downward movement of the first sliding plate, the central positioning axis is driven upwards through the third connecting rod, the third sliding block, and the second connecting rod to avoid excessive extension and collision damage during transportation. Finally, the main tower tube is lifted off the pre-embedded base as a whole.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This invention, through the cooperation of a positioning mechanism and a fixing mechanism, automatically completes coaxial alignment during the lowering of the tower, fundamentally avoiding the risk of overturning caused by eccentric center of gravity; multiple sets of sliding blocks extend radially synchronously based on the self-weight of the cylinder, forming a vertical and radial bidirectional interlocking constraint with the annular groove of the base, combined with the self-locking characteristic of the inclined wedge, providing strong locking stability, resisting welding vibration and external force impact interference, effectively eliminating the hidden dangers of side tipping and displacement during the cylinder section processing, and significantly improving the positioning accuracy and operational safety of the tower station processing.

[0021] 2. This invention adopts a weight-triggered pure mechanical linkage logic, which automatically locks the tower when it is lowered and unlocks and resets it simultaneously when it is lifted. There is no need for manual operation of fasteners or pins one by one, which greatly reduces the number of close-range manual operations at the work station and reduces the risk of manual operation. The overall structure has no threaded components that are prone to rust, which is suitable for the dusty and humid processing environment of the workshop. It has a low failure rate and high disassembly and assembly cycle efficiency, which can meet the batch standardized processing needs of wind power towers and effectively reduce the time and labor costs of processing procedures. Attached Figure Description

[0022] Figure 1 This is a front view of a safe fabrication structure and method for wind turbine towers proposed in this invention;

[0023] Figure 2 This is a side sectional view of the clamping mechanism of a wind turbine tower safety processing structure and method proposed in this invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A;

[0025] Figure 4 This is a cross-sectional view of the positioning mechanism of a wind turbine tower safety processing structure and method proposed in this invention;

[0026] Figure 5 For the present invention Figure 4 Enlarged view of point B;

[0027] Figure 6 This is a schematic diagram of the internal structure of a wind turbine tower safety processing structure and method proposed in this invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged view of point C.

[0029] Legend:

[0030] 1. Embedded base; 2. Main tower pipe; 200. Connecting tower pipe; 201. First fixing plate; 202. Second fixing plate; 203. Limiting block; 204. Mounting plate; 205. Top sliding plate; 206. Power connection box; 3. Fixing mechanism; 300. Sliding push rod; 301. First sliding plate; 302. Second sliding plate; 303. First limiting groove; 304. First sliding block; 305. First fixing block; 306. Annular positioning groove; 307. Second sliding... 308. Second limiting groove; 309. Telescopic connecting rod; 310. Push telescopic rod; 311. Push spring; 312. First connecting rod; 313. First spring; 314. Fourth limiting groove; 4. Positioning mechanism; 401. Central positioning shaft; 402. Second spring; 403. Third spring; 404. Sliding cover; 405. Second connecting rod; 406. Third limiting groove; 407. Third sliding block; 408. Third connecting rod; 409. Central positioning socket. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0033] like Figures 1-7 The wind turbine tower safety processing structure shown includes a pre-embedded base 1, a main tower tube 2, and a positioning mechanism 4 and a fixing mechanism 3 disposed inside the main tower tube 2. The top surface of the pre-embedded base 1 is provided with an annular positioning slot 306 and a central positioning insertion hole 409. The main tower tube 2 can be hoisted and placed above the pre-embedded base 1. The main tower tube 2 is fixedly connected to a first fixing plate 201 and a second fixing plate 202. The main tower tube 2 is fixedly connected to a limit block 203. The positioning mechanism 4 is used to limit the main tower tube 2 before installation. The fixing mechanism 3 is used to fix the main tower tube 2 after it is limited by the positioning mechanism 4.

[0034] The fixing mechanism 3 includes a first sliding disk 301 slidably connected inside the main tower tube 2. A sliding push rod 300 is fixedly connected to the lower end of the first sliding disk 301. A second sliding disk 302 is slidably connected inside the main tower tube 2. A first limiting groove 303 is formed inside the second sliding disk 302. A first sliding block 304 is slidably connected inside the first limiting groove 303. A first fixing block 305 is fixedly connected to the lower surface of the first sliding block 304. A telescopic connector is fixedly connected to the upper surface of the first sliding block 304. The telescopic connecting rod 309 has a push telescopic rod 310 fixedly connected to its side surface. A push spring 311 is sleeved on the outer surface of the push telescopic rod 310. A second limiting groove 308 is provided inside the second fixed plate 202. A second sliding block 307 is slidably connected inside the second limiting groove 308. A first connecting rod 312 is rotatably connected inside the second sliding block 307. A first spring 313 is sleeved on the outer surface of the sliding push rod 300. A fourth limiting groove is provided on the side surface of the first sliding disc 301. 314. The bottom end of the sliding push rod 300 is provided with a guide cone. When the main tower tube 2 is lowered, the guide cone is inserted into the center positioning hole 409 to achieve automatic centering. The bottom of the outer end of the first sliding block 304 is provided with a wedge-shaped guide surface. The inner top surface of the first fixing block 305 is provided with a matching wedge-shaped inclined surface. After the first sliding block 304 extends into the slot, the wedge-shaped surfaces fit together to form a wedge-tight self-locking. The greater the weight of the tower tube, the stronger the clamping force. The second sliding block 307 and the first sliding block 304 are fixed by the telescopic connecting rod 309. The telescopic rod 310 is fixed in the radial direction, with one end fixed to one side of the telescopic connecting rod 309 and the other end abutting against the inner wall of the main tower tube 2. It is used to provide the restoring force for the retraction of the first sliding block 304 and the first fixed block 305. The first sliding plate 301 and the second sliding block 307 are connected by the first connecting rod 312. There are six first fixed blocks 305, which are evenly distributed below the second sliding plate 302. The first spring 313 is disposed between the second fixed plate 202 and the second sliding plate 302.

[0035] Furthermore, using the weight of the main tower tube 2 as the sole power source, when the tower section falls to the pre-embedded base 1, the bottom end of the sliding push rod 300 is pushed by the top surface of the pre-embedded base 1 and moves upward relative to the section; the sliding push rod 300 drives the first sliding disc 301 to move upward synchronously, and the first sliding disc 301 pulls the first connecting rod 312 in the circumferential direction to swing at an angle, converting the vertical linear motion into radial thrust; the first connecting rod 312 drives the telescopic connecting rod 309 to move, and through the inclined plane transmission, drives the second limiting groove 308 to slide outward radially, and finally drives all the first sliding blocks 304 evenly distributed in the circumferential direction to extend outward synchronously and be inserted into the first fixing block 305 of the pre-embedded base 1, completing the full circumferential locking in one step.

[0036] The positioning mechanism 4 includes a central positioning shaft 401 slidably connected inside the first fixed plate 201. A second spring 402 is sleeved on the outer surface of the central positioning shaft 401. A third spring 403 is fixedly connected to the upper end of the central positioning shaft 401. A sliding cover 404 is sleeved on the outer surface of the upper end of the central positioning shaft 401. A second connecting rod 405 is rotatably connected inside the sliding cover 404. A third limiting groove 406 is provided inside the first fixed plate 201. A third sliding block 407 is slidably connected inside the third limiting groove 406. A third connecting rod 408 is rotatably connected inside the lower end of the third sliding block 407. The third spring 403 is disposed on the sliding cover 404. Between the moving cover 404 and the central positioning shaft 401, the second spring 402 is set between the first fixed plate 201 and the first sliding plate 301. The sliding cover 404 and the third sliding block 407 are connected by the second connecting rod 405. The third sliding block 407 and the first sliding plate 301 are connected by the third connecting rod 408. The top sliding plate 205 is slidably connected inside the main tower tube 2. The power connection box 206 is fixedly connected to the upper surface of the top sliding plate 205. The upper connecting tower tube 200 is also connected above the main tower tube 2. The two tower sections are connected by flange bolts. The fixing mechanism 3 and the positioning mechanism 4 are both located inside the lower main tower tube 2.

[0037] Furthermore, when the main tower tube 2 is locked in place, the sliding push rod 300 and the first sliding plate 301 move upward, simultaneously compressing the third spring 403 and the second spring 402 to store elastic potential energy. When the processing is completed and the tower is lifted upward, the pushing force at the bottom of the sliding push rod 300 disappears, and the compressed two-stage reset springs release their elastic force simultaneously, pushing the sliding push rod 300 and the first sliding plate 301 downward to reset. At the same time, the telescopic rod 310 is pushed to drive the second limiting groove 308 and the first sliding block 304 to retract inward, and all the first sliding blocks 304 simultaneously disengage from the first fixed block 305, and the mechanism automatically returns to the initial unlocked state.

[0038] A method for safely fabricating wind turbine towers includes the following steps:

[0039] S1 hoisting and positioning: hoist the main tower pipe 2 to the top of the pre-embedded base 1, and adjust the position so that the sliding push rod 300 is aligned with the center positioning hole 409 of the base.

[0040] S2 Positioning and Linkage: Slowly lower the main tower tube 2. After the bottom end of the sliding push rod 300 contacts the pre-embedded base 1, it moves upward relative to the base, driving the first sliding plate 301 to move upward. Through the first connecting rod 312, all the first sliding blocks 304 are pushed outward synchronously and locked into the first fixed block 305, completing the automatic centering and circumferential locking of the tower section.

[0041] S3 Processing Operation: After the tower section is fixed, welding, assembly, and flaw detection processing procedures are carried out;

[0042] S4 Lifting, Unlocking, and Resetting: After processing, the main tower pipe 2 is lifted upwards. The downward pressure on the sliding push rod 300 disappears, and the second spring 402 and the third spring 403 of the positioning mechanism 4 release their elasticity, driving the sliding push rod 300 and the first sliding plate 301 to descend and reset. The spring 311 pushes the first fixed block 305 to retract inwards synchronously, disengaging from the annular positioning slot 306 and releasing the lock. During the downward movement of the first sliding plate 301, the central positioning shaft 401 is retracted upwards through the third connecting rod 408, the third sliding block 407, and the second connecting rod 405 to avoid excessive extension and collision damage during transportation. Finally, the main tower pipe 2 is lifted off the pre-embedded base 1 as a whole.

[0043] Working principle: The main tower pipe 2 is hoisted by a crane to a position directly above the pre-embedded base 1. During the slow descent, the guide cone of the sliding push rod 300 first inserts into the central positioning hole 409, automatically correcting the position of the cylinder to achieve coaxial centering. As the cylinder continues to fall, the bottom end of the sliding push rod 300 touches the bottom surface of the hole and moves upward relative to the cylinder, pushing the first sliding disc 301 in the middle to move upward synchronously. The first sliding disc 301 drives the first connecting rod 312 to swing downward, pushing the telescopic connecting rod 309 to move downward. The vertical force is converted into radial thrust through the inclined plane transmission, driving all the first sliding blocks 304 to extend outward synchronously and lock into the first fixed block 305. The wedge-shaped surface of the first sliding block 304 and the wedge-shaped surface of the first fixed block 305 are tightly fitted together to form a wedge-tight self-locking mechanism. The greater the weight of the cylinder, the stronger the locking force.

[0044] When disassembly is required, the crane lifts the main tower pipe 2 upwards. As the cylinder moves upwards, the downward pressure on the sliding push rod 300 disappears, and the upper third spring 403 and the middle second spring 402 release their elasticity simultaneously, pushing the sliding push rod 300 and the first sliding plate 301 downwards to reset. The first connecting rod 312 then swings upwards, pushing the telescopic rod 310 laterally to push the second limiting groove 308 and the first sliding block 304 inwards, completely disengaging from the first fixed block 305. The locking state is released, and the cylinder can be lifted off the base as a whole, completing one work cycle.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A safe processing structure for wind turbine towers, comprising a pre-embedded base (1), a main tower tube (2), and a positioning mechanism (4) and a fixing mechanism (3) disposed inside the main tower tube (2), characterized in that: The top surface of the pre-embedded base (1) is provided with an annular positioning slot (306) and a central positioning insertion hole (409). The main tower tube (2) can be hoisted and placed above the pre-embedded base (1). The main tower tube (2) is internally fixedly connected with a first fixing plate (201) and a second fixing plate (202). The main tower tube (2) is internally provided with a limit block (203). The positioning mechanism (4) is used for automatic centering guidance before placement. The fixing mechanism (3) is used to drive the circumferential locking block to extend after centering by relying on the weight of the main tower tube, and to lock into the annular positioning slot (306) to complete circumferential locking and fixing.

2. The wind turbine tower safety processing structure according to claim 1, characterized in that: The fixing mechanism (3) includes a first sliding disk (301) slidably connected inside the main tower tube (2), a sliding push rod (300) fixedly connected to the lower end of the first sliding disk (301), a second sliding disk (302) slidably connected inside the main tower tube (2), a first limiting groove (303) is provided inside the second sliding disk (302), a first sliding block (304) slidably connected inside the first limiting groove (303), a first fixing block (305) fixedly connected to the lower surface of the first sliding block (304), a telescopic connecting rod (309) fixedly connected to the upper surface of the first sliding block (304), a push telescopic rod (310) fixedly connected to the side surface of the telescopic connecting rod (309), and a push spring (311) sleeved on the outer surface of the push telescopic rod (310).

3. The wind turbine tower safety processing structure according to claim 2, characterized in that: The second fixed plate (202) has a second limiting groove (308) inside, the second limiting groove (308) is slidably connected to a second sliding block (307), the second sliding block (307) is rotatably connected to a first connecting rod (312), the outer surface of the sliding push rod (300) is sleeved with a first spring (313), and the side surface of the first sliding disk (301) has a fourth limiting groove (314).

4. The wind turbine tower safety processing structure according to claim 3, characterized in that: The positioning mechanism (4) includes a central positioning shaft (401) slidably connected inside the first fixed plate (201). A second spring (402) is sleeved on the outer surface of the central positioning shaft (401). A third spring (403) is fixedly connected to the upper end of the central positioning shaft (401). A sliding cover (404) is sleeved on the outer surface of the upper end of the central positioning shaft (401). A second connecting rod (405) is rotatably connected inside the sliding cover (404). A third limiting groove (406) is opened inside the first fixed plate (201). A third sliding block (407) is slidably connected inside the third limiting groove (406). A third connecting rod (408) is rotatably connected inside the lower end of the third sliding block (407).

5. A safe processing structure for wind turbine towers according to claim 3, characterized in that: The bottom end of the sliding push rod (300) is provided with a guide cone. When the main tower tube (2) is lowered, the guide cone is inserted into the center positioning hole (409) to achieve automatic centering and alignment. The bottom of the outer end of the first sliding block (304) is provided with a wedge-shaped guide surface. The inner top surface of the first fixing block (305) is provided with a matching wedge-shaped inclined surface. After the first sliding block (304) is inserted into the slot, the wedge-shaped surfaces fit together to form a wedge-tight self-locking mechanism. The greater the self-weight of the tower tube, the stronger the clamping force.

6. The wind turbine tower safety processing structure according to claim 5, characterized in that: The second sliding block (307) and the first sliding block (304) are fixedly connected by a telescopic connecting rod (309). The push telescopic rod (310) is arranged radially, with one end fixed to one side of the telescopic connecting rod (309) and the other end abutting against the inner wall of the main tower tube (2), which is used to provide the retraction force of the first sliding block (304) and the first fixed block (305).

7. A safe processing structure for wind turbine towers according to claim 6, characterized in that: The first sliding disk (301) and the second sliding block (307) are connected by the first connecting rod (312). There are six first fixing blocks (305) evenly distributed below the second sliding disk (302). The first spring (313) is located between the second fixing plate (202) and the second sliding disk (302).

8. A safe processing structure for wind turbine towers according to claim 4, characterized in that: The third spring (403) is disposed between the sliding cover (404) and the central positioning shaft (401), the second spring (402) is disposed between the first fixed plate (201) and the first sliding disk (301), the sliding cover (404) and the third sliding block (407) are connected by the second connecting rod (405), and the third sliding block (407) and the first sliding disk (301) are connected by the third connecting rod (408).

9. A safe processing structure for wind turbine towers according to claim 3, characterized in that: The main tower tube (2) is internally slidably connected to a top sliding plate (205), and a power connection box (206) is fixedly connected to the upper surface of the top sliding plate (205). The upper connecting tower tube (200) is also connected above the main tower tube (2), and the two tower sections are connected by flange bolts. The fixing mechanism (3) and the positioning mechanism (4) are both located inside the lower main tower tube (2).

10. A method for safe fabrication of wind turbine towers, applied to a safe fabrication structure for wind turbine towers as described in any one of claims 1-9, characterized in that: Includes the following steps: S1 hoisting and positioning: hoist the main tower pipe (2) to the top of the pre-embedded base (1) and adjust the position so that the sliding push rod (300) is aligned with the center positioning hole (409) of the base. S2 Positioning and Linkage: Slowly lower the main tower pipe (2), and after the bottom end of the sliding push rod (300) contacts the pre-embedded base (1), it moves upward relative to the first sliding plate (301) and drives it to move upward. Through the first connecting rod (312), it pushes all the first sliding blocks (304) to extend outward synchronously and lock into the first fixed block (305), thus completing the automatic centering and circumferential locking of the tower section. S3 Processing Operation: After the tower section is fixed, welding, assembly, and flaw detection processing procedures are carried out; S4 Lifting, Unlocking and Resetting: After processing, the main tower pipe (2) is lifted upwards. The downward pressure on the sliding push rod (300) disappears, and the second spring (402) and the third spring (403) of the positioning mechanism (4) release their elastic force, driving the sliding push rod (300) and the first sliding plate (301) to descend and reset. The spring (311) drives the first fixed block (305) to retract inwards synchronously, disengaging from the annular positioning slot (306) and releasing the lock. During the downward movement of the first sliding plate (301), the central positioning shaft (401) is driven upwards by the third connecting rod (408), the third sliding block (407), and the second connecting rod (405) to avoid excessive extension and collision damage during transportation. Finally, the main tower pipe (2) is lifted off the pre-embedded base (1) as a whole.

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