Wind power mixed tower and prestressed steel strand steering support and construction method thereof

Abstract

The invention discloses a prestressed steel strand steering support which comprises a support assembly and a steering assembly. The support assembly comprises a bottom plate, two lug plates are installed on the bottom plate, and the two lug plates are oppositely arranged and parallel to each other. The steering assembly comprises at least three steering units, the two steering units located at the two ends are used for independently adjusting the positions of the steel strands on the two sides respectively, and the steering unit located in the middle is used for adjusting the steering angle of the steel strand at the position of each steering unit; the steering unit comprises a steering roller used for restraining steering of the steel strand, and roller seats are arranged at the two ends of the steering roller correspondingly. The two ends of each steering roller are in sliding fit with the two lug plates correspondingly, and the support assembly is provided with a position adjusting mechanism used for independently adjusting the position of each steering roller. The invention further discloses a wind power mixed tower and a construction method of the prestressed steel strand steering support of the wind power mixed tower. According to the wind power mixed tower and the prestress steel strand steering support and the construction method thereof, the positions of the steel strands on the two sides can be independently adjusted, the steering angle of the steel strands can be reduced, and therefore steel strand loss and prestress loss can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power generation, and specifically relates to a wind power hybrid tower and a prestressed steel strand turning support and a construction method thereof. Background Art

[0002] With the development of technology, the construction scale and number of wind turbines have increased year by year. The replacement of large-scale wind turbines with high power, long blades and high towers has been significantly accelerated. Larger wind turbines require higher heights to support. As a key component of a wind turbine, the tower shoulders the important mission of increasing the height of the wind turbine and ensuring the safety of the unit. At present, the mainstream high-tower solutions include all-steel flexible tower technology and hybrid tower technology. As the height of the tower continues to increase, the hybrid tower has the advantages of greater overall structural rigidity and greater damping coefficient than the flexible steel tower. It can ensure that the unit has a smaller amplitude during installation and the entire life cycle, and can ensure the stability of the windward angle of the impeller system, more stable power generation and greatly reduce the operation and maintenance costs. Hybrid towers have become an inevitable choice for increasing the height of wind turbines and ensuring the reliable operation of units.

[0003] In a mixed tower structure, the prestressing system is an important component related to the structural safety. At present, most of the prestressing systems of mixed towers use external prestressing. In the prestressing system, the prestressed steel strands are not all perpendicular to the ground, but change along with the change of the shape of the tower structure. The steel strands are mainly subjected to tensile force, so the steel strands must be in a straightened state and cannot naturally form a curve. When the taper of the mixed tower changes at different positions, the steel strands may form surface contact with the tower wall at the position where the taper of the mixed tower changes, increasing the loss of prestress and wear of the steel strands, while increasing the force on the tower body itself.

[0004] Therefore, it is necessary to install a steel strand steering device at the position where the conicity of the mixed tower changes to ensure the safety and reliability of the prestressed system. However, the existing steel strand steering device generally uses a steering wheel to constrain the steering of the steel strand, which has the following shortcomings: (1) Due to the limitation of the installation and construction process, the installation position of the steel strand steering device often deviates from the position 14 where the conicity of the mixed tower changes. Although the steel strand 13 can be constrained to turn by a steering wheel 15, the angles of the steel strands 13 on both sides cannot be adjusted independently, which may cause the steel strand 13 to still be in contact with the position 14 where the conicity of the mixed tower changes, thereby causing steel strand loss, such as Figure 1 As shown; (2) the steel strand 13 is constrained to steer at a steering wheel 15, resulting in a larger steering angle of the steel strand 13 at the steering wheel 15, which in turn causes a larger prestress loss in the steel strand 13. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a wind turbine hybrid tower and its prestressed steel strand turning support and construction method, which can not only independently adjust the positions of the steel strands on both sides, but also reduce the turning angle of the steel strands, thereby reducing the steel strand loss and prestress loss.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention firstly proposes a prestressed steel strand turning support, comprising a support assembly and a turning assembly;

[0008] The support assembly comprises a bottom plate, on which two ear plates are mounted, and the two ear plates are arranged opposite to each other and parallel to each other;

[0009] The steering assembly comprises at least three steering units, wherein the two steering units at the two ends are used to independently adjust the positions of the steel strands at the two sides, and the steering unit in the middle is used to adjust the steering angle of the steel strand at the position of each steering unit;

[0010] The steering unit includes a steering roller for constraining the steering of the steel strand, and roller seats are respectively provided at both ends of the steering roller; the two ends of the steering roller are respectively slidably matched with the two ear plates, and the support assembly is provided with a position adjustment mechanism for independently adjusting the position of each steering roller.

[0011] Furthermore, a linear track is provided on the ear plate corresponding to the steering roller, and the two linear tracks slidingly matched with the two ends of the same steering roller are parallel to each other;

[0012] The linear track is a linear sliding hole arranged on the ear plate, and the two ends of the steering roller or the roller seats located at the two ends of the steering roller are slidably matched with the corresponding linear sliding holes; or, the linear track is a linear slide rail installed on the ear plate, and the roller seats located at the two ends of the steering roller are slidably matched with the corresponding linear slide rail.

[0013] Furthermore, the position adjustment mechanism includes two position adjustment units for respectively adjusting the positions of the two ends of the steering roller; the position adjustment unit includes a top block fixedly mounted on the corresponding ear plate and a top screw threadedly matched with the top block, and the top screw cooperates with the corresponding roller seat to adjust the position of the roller seat.

[0014] Furthermore, the steering roller is provided with a restraining sleeve for preventing deviation caused by stress of the steel strand; the restraining sleeve comprises a central tube, and both ends of the central tube are respectively provided with restraining sleeves for limiting cooperation with the steel strand.

[0015] Furthermore, the restraint sleeve is integrally arranged with the center tube; or, threaded sections are respectively arranged at both ends of the center tube, a smooth section cooperating with the steel strand is arranged between the two threaded sections, the two restraint sleeves are respectively threadedly matched with the two threaded sections, and anti-loosening nuts are arranged on the threaded sections.

[0016] Further, the steering roller and the roller seat are rotationally matched, and the central tube and the steering roller are integrated; or the central tube and the steering roller rotate synchronously;

[0017] Furthermore, the steering roller is fixedly connected to the roller seat, and the central tube is rotationally matched with the steering roller.

[0018] Furthermore, a first reinforcing rib is provided between the two ear plates, a second reinforcing rib is provided between the first reinforcing rib and the bottom plate, and both the first reinforcing rib and the second reinforcing rib are perpendicular to the bottom plate.

[0019] The present invention also proposes a wind turbine hybrid tower, comprising a tower, wherein steel strands are arranged at intervals inside the tower, and the prestressed steel strand turning support as described above is installed on one side of the taper change position of the tower, and the prestressed steel strand turning support is arranged in a one-to-one correspondence with the steel strands; in the prestressed steel strand turning support, two steering units located at both ends are respectively used to independently adjust the positions of the steel strands on both sides to prevent the steel strands on both sides from contacting the corresponding tower wall.

[0020] The present invention also proposes a construction method for a prestressed steel strand turning support of a wind power hybrid tower, comprising the following steps:

[0021] Step 1: pre-embed a mounting sleeve on one side of the tower at the position where the taper changes, and install the prestressed steel strand turning supports as described above on the mounting sleeve corresponding to the steel strands one by one;

[0022] Step 2: independently adjusting the positions of the two steering rollers at the two ends to independently adjust the distance between the steel strands on both sides and the tower wall to a set range;

[0023] Step three: adjust the position of the steering roller located in the middle, reduce the steering amplitude of the steel strand at the position of each steering roller, and keep the steel strand in contact with the two steering rollers located at both ends.

[0024] The beneficial effects of the present invention are:

[0025] The prestressed steel strand turning support of the present invention sets the steering assembly as at least three steering units, and can independently adjust the position of each steering roller relative to the two ear plates through a position adjustment mechanism. In this way, by independently adjusting the positions of the steering rollers of the two steering units located at both ends, the positions of the steel strands on both sides are independently adjusted, so that the distances between the steel strands on both sides and the tower wall are within a set range, thereby avoiding the possibility of contact between the steel strands and the tower wall and the position of the tower taper change, and reducing the loss of the steel strands; by independently adjusting the steering roller position of the middle steering unit, the steering angle of the steel strand at each steering roller position can be adjusted, thereby avoiding excessive steering angles of the steel strands at the steering rollers, resulting in greater prestress loss; in summary, the prestressed steel strand turning support of the present invention can not only independently adjust the positions of the steel strands on both sides, but also reduce the steering angles of the steel strands, thereby reducing the loss of steel strands and prestress loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0027] Figure 1 It is a structural schematic diagram of an existing steel strand steering device;

[0028] Figure 2 It is a structural schematic diagram of a wind power hybrid tower embodiment of the present invention;

[0029] Figure 3 for Figure 2 A top view of

[0030] Figure 4 It is a structural schematic diagram of a prestressed steel strand turning support;

[0031] Figure 5 is a structural schematic diagram of a support assembly;

[0032] Figure 6 It is a side view of the prestressed steel strand turning support;

[0033] Figure 7 It is a structural schematic diagram of the steering roller;

[0034] Figure 8 It is a structural schematic diagram when the center tube and the restraining sleeve in the restraining sleeve are arranged in one piece;

[0035] Fig. 9 It is a structural schematic diagram when the center tube and the constraint sleeve in the constraint sleeve are separately arranged;

[0036] Fig.10 A schematic diagram of changing the distance between two restraining sleeves to adapt to steel strands with different outer diameters;

[0037] Fig.11 It is a cross-sectional view of the prestressed steel strand turning support;

[0038] Fig.12 This is a schematic diagram of the structure of the wind turbine hybrid tower in this embodiment for constraining the steering of the steel strands.

[0039] Description of reference numerals:

[0040] 10-tower; 11-upper tower section; 12-lower tower section; 13-steel strand; 14-taper change position; 15-steering wheel;

[0041] 20-prestressed steel strand turning support; 21-bottom plate; 22-ear plate; 23-first reinforcing rib plate; 24-second reinforcing rib plate; 25-mounting hole; 26-linear track; 27-top block; 28-top screw;

[0042] 31-steering roller; 32-roller seat; 33-constraint sleeve; 331-center tube; 331a-threaded section; 331b-smooth section; 332-constraint sleeve; 333-annular groove; 34-spacer sleeve. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0044] like Figure 2-3 As shown, the wind power hybrid tower of this embodiment includes a tower 10, and the tower 10 includes at least two tower sections, wherein the taper of the upper tower section 11 located at the top of the two tower sections is smaller than the taper of the lower tower section 12 located at the bottom, so that a taper change position is formed between the upper tower section 11 and the lower tower section 12. In this embodiment, a plurality of steel strands 13 are arranged at intervals in the tower 10. In order to avoid contact between the steel strands 13 and the tower wall of the tower 10 at the taper change position, a prestressed steel strand turning support 20 is installed on one side of the taper change position of the tower 10 in this embodiment, and the prestressed steel strand turning support 20 is arranged one-to-one with the steel strands 13. Specifically, since there is a certain curvature change between the upper tower section 11 and the lower tower section 12, the prestressed steel strand turning support 20 can only be installed on one side of the taper change position of the tower 10, that is, the prestressed steel strand turning support 20 can be installed on the upper tower section 11, or the prestressed steel strand turning support 20 can be installed on the lower tower section 12. In this embodiment, the prestressed steel strand turning support 20 is installed on the upper tower section 11.

[0045] like Figure 4 As shown, the prestressed steel strand turning support 20 of this embodiment includes a support assembly and a turning assembly. Figure 5 As shown, the support assembly of this embodiment includes a base plate 21, on which two ear plates 22 are installed. The two ear plates 22 are arranged opposite to each other and parallel to each other. In order to improve the structural strength of the two ear plates 22, in this embodiment, a first reinforcing rib 23 is arranged between the two ear plates 22, and a second reinforcing rib 24 is arranged between the first reinforcing rib 23 and the base plate 21. The first reinforcing rib 23 and the second reinforcing rib 24 are both perpendicular to the base plate 21. In this embodiment, the connection positions between the base plate 21, the ear plates 22, the first reinforcing rib 23 and the second reinforcing rib 24 are welded. In order to facilitate the installation and fixation of the prestressed steel strand turning support 20, in this embodiment, mounting holes 25 are respectively provided at four diagonal positions of the base plate 21. The mounting holes 25 are waist-shaped round holes, so as to facilitate the alignment and connection with the mounting sleeve pre-buried in the tower 10.

[0046] Specifically, Figure 4 As shown, the steering assembly of this embodiment includes at least three steering units. Specifically, the two steering units located at both ends are used to independently adjust the positions of the steel strands 13 on both sides to prevent the steel strands 13 on both sides from contacting the corresponding tower walls; the steering unit located in the middle is used to adjust the steering angle of the steel strand 13 at each steering unit position. In this embodiment, the steering assembly includes three steering units, that is, the steering unit located in the middle is set to only one. Of course, in some other embodiments, the steering unit located in the middle can also be set to two or more. The principle is the same and will not be repeated.

[0047] In this embodiment, the steering unit includes a steering roller 31 for constraining the steel strand to turn, and roller seats 32 are respectively provided at both ends of the steering roller 31. The two ends of the steering roller 31 are respectively slidably matched with the two ear plates 22, and a position adjustment mechanism for independently adjusting the position of each steering roller 31 is provided on the support assembly. In this embodiment, the position adjustment mechanism includes two position adjustment units for respectively adjusting the positions of the two ends of the steering roller 31.

[0048] In this embodiment, a linear track 26 is provided on the ear plate 22 corresponding to the steering roller 31, and the two linear tracks 26 slidably matched with the two ends of the same steering roller 31 are parallel to each other. In this way, the position of the steering roller 31 can be adjusted by adjusting the positions of the two ends of the steering roller 31 on the corresponding two linear tracks 26.

[0049] Specifically, in one embodiment, the linear track 26 is a linear slide hole provided on the ear plate 22, and the two ends of the steering roller 31 or the roller seats 32 located at the two ends of the steering roller 31 are slidably matched with the corresponding linear slide holes. In another embodiment, the linear track 26 can be set as a linear slide rail installed on the ear plate 22, and in this case, the roller seats 32 located at the two ends of the steering roller 31 can be slidably matched with the corresponding linear slide rail. The linear track 26 in this embodiment is a linear slide hole provided on the ear plate 22.

[0050] Specifically, Figure 6 As shown, in this embodiment, the position adjustment unit includes a top block 27 fixedly mounted on the corresponding ear plate 22 and a top screw 28 threadedly matched with the top block 27. The top screw 28 is matched with the corresponding roller seat 32 to adjust the position of the roller seat 32, thereby realizing the adjustment of the position of the steering roller 31. Specifically, in one embodiment, the top screw 28 and the corresponding roller seat 32 can be separated, but the top screw 28 can push the corresponding roller seat 32 to move to adjust the position; when the corresponding steering roller 31 is subjected to the pressure applied by the steel strand 13, the roller seats 32 at both ends of the steering roller 31 are in contact with the top screw 28 and are limited by the top screw 28. In another embodiment, the top screw 28 and the corresponding roller seat 32 are rotated and matched, and the top screw 28 and the corresponding roller seat 32 move synchronously in the axial direction. At this time, the top screw 28 and the corresponding roller seat 32 are always connected, and the top screw 28 can drive the corresponding roller seat 32 to move in two directions along its axial direction. At this time, the top screw 28 can withstand the pressure applied by the corresponding roller seat 32, and can also withstand the tension applied by the corresponding roller seat 32.

[0051] In the preferred implementation of this embodiment, a restraining sleeve 33 is provided on the steering roller 31 to prevent the steel strand 13 from deflecting due to stress. Specifically, the restraining sleeve 33 includes a central tube 331, and restraining sleeves 332 for limiting the position of the steel strand 13 are provided at both ends of the central tube 331. Figure 7 The outer diameter of the constraint sleeve 332 is greater than the outer diameter of the center tube 331, so that an annular groove 333 is formed between the two constraint sleeves 332 and the center tube 331, and the annular groove 333 can limit the steel strand 13 and prevent the steel strand 13 from deflecting.

[0052] Specifically, various structures may be used between the restraining sleeve 332 and the central tube 331 .

[0053] In one structural mode, the restraining sleeve 332 is integrally arranged with the central tube 331, such as Figure 8 At this time, if it is to be matched with steel strands 13 of different specifications and models, it is necessary to replace the constraint sleeve 33 or replace the entire steering roller 31.

[0054] In another structural mode, threaded sections 331a are provided at both ends of the central tube 331, and a smooth section 331b matching with the steel strand 13 is provided between the two threaded sections 331a. The two restraining sleeves 332 are respectively threadedly matched with the two threaded sections 331a. Fig. 9 In order to prevent the constraint sleeve 332 from loosening, a locking nut 333 may be provided on the threaded section 331a. In this way, when it is necessary to cooperate with steel strands 13 of different specifications and models, the position of the constraint sleeve 332 on the corresponding threaded section 331a can be conveniently adjusted, and then the distance between the two constraint sleeves 332 and the width of the annular groove 333 can be adjusted to adapt to steel strands 13 of different diameters.

[0055] like Fig.10 As shown, in the restraining sleeve 33, by changing the distance between the two restraining sleeves 332, it can cooperate with steel strands 13 of different specifications and models.

[0056] In addition, the steering roller 31 and the roller seat 32 may also be fixedly connected and rotatably matched. Specifically, when the steering roller 31 and the roller seat 32 are rotatably matched, the center tube 331 and the steering roller 31 may be integrated, such as Fig.11 As shown; the center tube 331 and the steering roller 31 can also be rotated synchronously, such as the center tube 331 is sleeved on the steering roller 31, and the center tube 331 and the steering roller 31 are splined, which will not be repeated; in this way, the constraint sleeve 33 and the steering roller 31 can be rotated together, so that the steering roller 31 and the steel strand 13 can be rolled together, which can reduce the loss of the steel strand 13. When the steering roller 31 is fixedly connected to the roller seat 32, the center tube 331 and the steering roller 31 are rotationally matched. In this way, the center tube 331 and the steel strand 13 can also be rolled together, which can reduce the loss of the steel strand 13. In the preferred implementation manner of this embodiment, in order to locate the position of the constraint sleeve 33, a spacer sleeve 34 is provided between the constraint sleeve 33 and the ear plate 22, such as Fig.11 shown.

[0057] In this embodiment, the support assembly is made of Q355 material, and the steering roller 31 and the restraining sleeve 33 are made of 42CrMo material. A flexible protective lining is pasted on the surface of the steering roller 31 and the restraining sleeve 33 to protect the PE sheath of the steel strand 13.

[0058] like Fig.12As shown, the wind power hybrid tower of this embodiment is provided with a prestressed steel strand turning support 20 corresponding to the steel strand 13, and the turning assembly is set to at least three turning units, and the position of each turning roller relative to the two ear plates 22 can be independently adjusted by the position adjustment mechanism. In this way, by independently adjusting the positions of the turning rollers 31 of the two turning units at both ends, the positions of the steel strands 13 on both sides are independently adjusted, so that the distance between the steel strands 13 on both sides and the tower wall is within the set range, avoiding the possibility of contact between the steel strands 13 and the tower wall and the tower taper change position 14, and reducing the loss of the steel strands; by independently adjusting the position of the turning roller 31 of the middle turning unit, the turning angle of the steel strand 13 at each turning roller 31 can be adjusted, avoiding the turning angle of the steel strand at the turning roller 31 being too large, resulting in a large prestress loss. In summary, the wind power hybrid tower of this embodiment can not only independently adjust the positions of the steel strands on both sides, but also reduce the turning angle of the steel strands, thereby reducing the loss of the steel strands and the prestress loss.

[0059] Specifically, this embodiment also proposes a method for constructing a prestressed steel strand turning support for a wind power hybrid tower, comprising the following steps:

[0060] Step 1: pre-embed a mounting sleeve on one side of the taper change position of the tower 10, and install a prestressed steel strand turning support 20 on the mounting sleeve corresponding to the steel strands 13 one by one;

[0061] Step 2: independently adjust the positions of the two steering rollers 31 at both ends, and independently adjust the distance between the steel strands 13 on both sides and the tower wall to a set range to prevent the steel strands 13 from contacting the tower wall and causing loss.

[0062] Step three: adjust the position of the steering roller 31 in the middle, reduce the steering amplitude of the steel strand 13 at each steering roller 31, and keep the steel strand 13 in contact with the two steering rollers 31 at both ends.

[0063] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A prestressed steel strand turning support, characterized in that: It includes a support assembly and a steering assembly; The support assembly comprises a bottom plate, on which two ear plates are mounted, and the two ear plates are arranged opposite to each other and parallel to each other; The steering assembly comprises at least three steering units, wherein the two steering units at the two ends are used to independently adjust the positions of the steel strands at the two sides, and the steering unit in the middle is used to adjust the steering angle of the steel strand at the position of each steering unit; The steering unit includes a steering roller for constraining the steering of the steel strand, and roller seats are respectively provided at both ends of the steering roller; the two ends of the steering roller are respectively slidably matched with the two ear plates, and the support assembly is provided with a position adjustment mechanism for independently adjusting the position of each steering roller.

2. The prestressed steel strand turning support according to claim 1, characterized in that: The ear plate is provided with a linear track corresponding to the steering roller, and the two linear tracks slidingly matched with the two ends of the same steering roller are parallel to each other; The linear track is a linear sliding hole arranged on the ear plate, and the two ends of the steering roller or the roller seats located at the two ends of the steering roller are slidably matched with the corresponding linear sliding holes; or, the linear track is a linear slide rail installed on the ear plate, and the roller seats located at the two ends of the steering roller are slidably matched with the corresponding linear slide rail.

3. The prestressed steel strand turning support according to claim 2, characterized in that: The position adjustment mechanism includes two position adjustment units for respectively adjusting the positions of the two ends of the steering roller; the position adjustment unit includes a top block fixedly mounted on the corresponding ear plate and a top screw threadedly matched with the top block, and the top screw cooperates with the corresponding roller seat to adjust the position of the roller seat.

4. The prestressed steel strand turning support according to any one of claims 1 to 3, characterized in that: The steering roller is provided with a restraining sleeve for preventing deviation caused by stress of the steel strand; the restraining sleeve comprises a central tube, and restraining sleeves for limiting the position of the steel strand are respectively provided at both ends of the central tube.

5. The prestressed steel strand turning support according to claim 4, characterized in that: The restraint sleeve is integrally arranged with the center tube; or, threaded sections are respectively arranged at both ends of the center tube, a smooth section cooperating with the steel strand is arranged between the two threaded sections, the two restraint sleeves are respectively threadedly matched with the two threaded sections, and anti-loosening nuts are arranged on the threaded sections.

6. The prestressed steel strand turning support according to claim 4, characterized in that: The steering roller and the roller seat are rotationally matched, and the central tube and the steering roller are integrated; or the central tube and the steering roller rotate synchronously.

7. The prestressed steel strand turning support according to claim 4, characterized in that: The steering roller is fixedly connected to the roller seat, and the central tube is rotationally matched with the steering roller.

8. The prestressed steel strand turning support according to claim 1, characterized in that: A first reinforcing rib is arranged between the two ear plates, a second reinforcing rib is arranged between the first reinforcing rib and the bottom plate, and both the first reinforcing rib and the second reinforcing rib are perpendicular to the bottom plate.

9. A wind power hybrid tower, characterized in that: It comprises a tower, wherein steel strands are arranged at intervals inside the tower, and a prestressed steel strand turning support as claimed in any one of claims 1 to 8 is installed on one side of the taper change position of the tower, and the prestressed steel strand turning support is arranged in a one-to-one correspondence with the steel strands; in the prestressed steel strand turning support, two turning units located at both ends are respectively used to independently adjust the positions of the steel strands on both sides to prevent the steel strands on both sides from contacting the corresponding tower wall.

10. A method for constructing a prestressed steel strand turning support for a wind power hybrid tower, characterized in that: The steps include: Step 1: pre-embed a mounting sleeve on one side of the tower at the position where the taper changes, and install the prestressed steel strand turning support according to any one of claims 1 to 8 on the mounting sleeve in one-to-one correspondence with the steel strands; Step 2: independently adjusting the positions of the two steering rollers at the two ends to independently adjust the distance between the steel strands on both sides and the tower wall to a set range; Step three: adjust the position of the steering roller located in the middle, reduce the steering amplitude of the steel strand at the position of each steering roller, and keep the steel strand in contact with the two steering rollers located at both ends.

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