Steering device for steel strand of wind power concrete tower

Abstract

The utility model provides a steering device for a steel strand of a wind power concrete tower. The steering device comprises a supporting plate (1), two rib plates (2) and a steering lug plate (3). The two rib plates (2) are oppositely arranged at intervals and fixed to the top of the supporting plate (1), and the steering lug plate (3) is erected above the two rib plates (2). A groove I is formed in the middle of the top of the steering lug plate (3), a groove II is formed in the middle of the restraint strap (4); the restraint strap (4) is placed above the steering lug plate (3), and the groove I and the groove II are combined into a through hole. The steel strand steering device has the advantages that the steel strand steering installation problem is smoothly solved, the structure is simple, installation is convenient, efficiency is high, and cost is reduced; and the unbonded steel strand bundle is protected by the additional layer, so that the problem of abrasion damage is solved.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation, and in particular relates to a steering device for steel strands of wind power concrete towers. Background Technology

[0002] Currently, the height of all wind turbine concrete towers is around 120m, with the highest reaching 185m. The tower structure is mostly a combination of conical and straight-cylinder structures, employing prestressed steel strands to improve the tower's strength and service life. Due to the shape of the mixed tower structure, the steel strands inevitably come into contact with the inner wall of the tower during tensioning, easily causing wear and damage. To solve this problem, it is necessary to keep the steel strands away from the inner wall of the tower during tensioning. Existing technology generally involves adding a steering device to the inner wall of the tower to allow the steel strands to change angle smoothly without touching the inner wall. However, existing steering devices are heavy, long, and integrated steel strand steering devices, with complex structures, high costs, and difficult installation. Therefore, there is an urgent need for a simpler and more convenient structure to achieve the purpose of steel strand steering. Summary of the Invention

[0003] In view of this, the present invention aims to provide a steering device for the steel strands of a wind power concrete tower.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A steering device for steel strands of a wind power concrete tower includes a support plate (1), two rib plates (2), and a steering ear plate (3).

[0006] The two ribs (2) are placed at intervals relative to each other and fixed on the top of the support plate (1), and the steering ear plate (3) is mounted above the two ribs (2).

[0007] Furthermore, the top center of the steering ear plate (3) has a groove I.

[0008] Furthermore, it also includes a constraint band (4), which has a groove II in the middle; the constraint band (4) is placed above the steering ear plate (3), and the groove I and the groove II are combined into a through hole.

[0009] Furthermore, the steering ear plate (3) has mounting holes I at both ends; the constraint band (4) has mounting holes II at both ends, and the positions of mounting holes I and mounting holes II correspond one-to-one.

[0010] Furthermore, the mounting holes I and II are used to fix the constraint band (4) to the steering ear plate (3) by means of mounting bolts.

[0011] Furthermore, a web plate (6) is provided in the middle position formed by the support plate (1), the steering ear plate (3) and the two rib plates (2).

[0012] Furthermore, an additional plate (5) that fits the shape of the steering ear plate (3) is provided inside the groove I of the steering ear plate (3).

[0013] Furthermore, the additional plate (5) is made of polytetrafluoroethylene.

[0014] Furthermore, the support plate (1), the two ribs (2), the steering ear plate (3) and the web plate (6) are connected by welding;

[0015] The steering ear plate (3) and the auxiliary plate (5) are glued and fixed together.

[0016] Furthermore, the bottom of the support plate (1) is curved.

[0017] The advantages and positive effects of this utility model are:

[0018] 1. This solution successfully solves the problem of steel strand reversal installation. It has a simple structure, is easy to install, is highly efficient, and reduces costs.

[0019] 2. The unbonded steel strand bundles are protected by an additional layer, which solves the problem of wear and damage.

[0020] 3. This solution solves the problem of excessive embedded parts in concrete towers, requiring only a small number of embedded parts.

[0021] 4. The steel strand restraint measures and steering measures are combined into one device, which also solves the problem of lateral displacement of the steel strand bundle. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a sectional view of the main view of this utility model;

[0024] Figure 2 This is a side view of the present invention;

[0025] Figure 3 This is a top view of the present invention.

[0026] In the picture:

[0027] 1. Support plate 2. Rib plate 3. Steering lug plate 4. Restraint strap

[0028] 5. Additional plate; 6. Web plate; 7. Steel strand bundle Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. In the absence of conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the structure of the device will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and height should be included.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] like Figures 1 to 3 As shown, this utility model includes a support plate 1, two rib plates 2, and a steering ear plate 3; the two rib plates 2 are placed opposite each other and fixed on the top of the support plate 1, and the steering ear plate 3 is mounted above the two rib plates 2 and supported by the two rib plates 2.

[0035] The steering ear plate 3 has a groove I in the middle of its top and mounting holes I at both ends; it also includes a constraint band 4, which has a groove II in the middle and mounting holes II at both ends; the constraint band 4 is placed above the steering ear plate 3, the groove I and the groove II are combined into a through hole, and the positions of the mounting holes I and the mounting holes II correspond one-to-one.

[0036] The constraint band 4 is fixed to the steering ear plate 3 by means of mounting bolts through mounting holes I and II. After the steel strand bundle is tensioned, the constraint band 4 is pressed into the surface of the steel strand bundle and then fixed to the steering ear plate 3, thus fixing the position of the steel strand bundle.

[0037] A web plate 6 is also provided in the middle position formed by the support plate 1, the steering ear plate 3 and the two rib plates 2, which can play a supporting and reinforcing role.

[0038] Inside the groove I of the steering ear plate 3, an additional plate 5 is provided that conforms to the shape of the steering ear plate 3. The additional plate 5 is made of polytetrafluoroethylene. The unbonded steel strand bundle is protected by the additional layer, which solves the problem of wear and damage. It can also lubricate and reduce wear of the steel strand bundle, thus extending its service life. Mounting holes I and II can be used to install the additional plate and the restraint strap to prevent the steel strand from slipping off during threading.

[0039] The support plate 1, the two ribs 2, the steering ear plate 3 and the web plate 6 are connected by welding, and the steering ear plate 3 and the auxiliary plate 5 are glued and fixed together.

[0040] The bottom of the support plate 1 is curved, corresponding to the curvature of the inner wall of the tower.

[0041] During operation, the mixed epoxy structural adhesive is first evenly applied to the top surface of the steering ear plate 3. Then, the additional plate 5 is cut and pressed into the steering ear plate 3, ensuring full adhesion of the epoxy structural adhesive. After the epoxy structural adhesive has fully cured, the support plate 1 is bolted to the pre-embedded sleeve in the concrete tower by passing bolts through the bolt holes of the support plate 1. The support plate 1 is then tightened and fixed to the concrete tower wall. Next, the steel strand bundle 7 is stretched and secured to the groove of the steering ear plate 3 with restraint strap 4 (high-strength soft braided strap), and then firmly secured with bolts.

[0042] The arc at the bottom of the support plate 1 is closely connected to the inner wall of the tower. The additional plate 5 directly bears the horizontal pressure brought by the steel strand bundle. The pressure on the additional plate 5 is then transmitted to the ear plate 3 and the web plate 6 in sequence to disperse the pressure.

[0043] The steel strand constraint and steering measures in this scheme are combined into one device, which not only prevents the steel strand bundle from wearing against the tower wall, but also solves the problem of lateral displacement of the steel strand bundle.

[0044] This solution has a simple structure, is easy to install, and is highly efficient. It does not require many pre-embedded parts, thus reducing costs.

[0045] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A steering device for steel strands in a wind turbine concrete tower, characterized in that: Includes a support plate (1), two ribs (2), and a steering ear plate (3); The two ribs (2) are placed at intervals relative to each other and fixed on the top of the support plate (1), and the steering ear plate (3) is mounted above the two ribs (2).

2. The turning device for steel strand according to claim 1, characterized in that: The top center of the steering ear plate (3) has a groove I.

3. The turning device for steel strand according to claim 2, characterized in that: It also includes a constraint band (4), which has a groove II in the middle; the constraint band (4) is placed above the steering ear plate (3), and the groove I and the groove II are combined into a through hole.

4. The turning device for steel strand according to claim 3, characterized in that: The steering ear plate (3) has mounting holes I at both ends; the constraint band (4) has mounting holes II at both ends, and the positions of mounting holes I and mounting holes II correspond one to one.

5. The turning device for steel strand according to claim 4, characterized in that: The mounting holes I and II are used to fix the constraint band (4) to the steering ear plate (3) by means of mounting bolts.

6. The turning device for steel strand according to claim 1, characterized in that: A web plate (6) is also provided in the middle position enclosed by the support plate (1), the steering ear plate (3) and the two rib plates (2).

7. The turning device for steel strand according to claim 1, characterized in that: An additional plate (5) that fits the shape of the steering ear plate (3) is provided inside the groove I of the steering ear plate (3).

8. The turning device for steel strand according to claim 7, characterized in that: The additional plate (5) is made of polytetrafluoroethylene.

9. The turning device for steel strand according to claim 1, characterized in that: The support plate (1), the two ribs (2), the steering ear plate (3) and the web plate (6) are connected by welding; The steering ear plate (3) and the auxiliary plate (5) are glued and fixed together.

10. The turning device for steel strand according to claim 1, characterized in that: The bottom of the support plate (1) is curved.

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