Foundation ring type fan foundation reinforcing stud

Abstract

The foundation ring type fan foundation reinforcing stud comprises a base, a rod portion and an end cap, the base is provided with a first side face and a second side face which are opposite, the rod portion is provided with a first end and a second end which are opposite, the first end of the rod portion is connected with the first side face of the base, and the second end of the rod portion is connected with the end cap. A plurality of protrusions are arranged on the second side face of the base, and a plurality of protrusions are arranged on the periphery of the rod part in the circumferential direction and the axial direction at intervals. The base is welded to the inner wall face or the outer wall face of the fan tower barrel, due to the arrangement of the protruding parts, it can be ensured that the second side face of the base and the inner wall face or the outer wall face of the fan tower barrel are fully welded, it is ensured that weld joints are full, and the constraint effect loss of the foundation ring type fan foundation reinforcing stud on the tower barrel is avoided. A plurality of protrusions are arranged on the periphery of the rod part in the circumferential direction and the axial direction at intervals, the bond stress of concrete and the foundation ring type fan foundation reinforcing stud can be effectively increased, and the coordination work capacity of the structure of the concrete and the stud can be brought into play easily.

Description

Technical Field

[0001] The utility model relates to the technical field of fan reinforcement, in particular to a foundation ring type fan foundation reinforcement bolt. Background Art

[0002] A considerable proportion of wind power generation foundation structures are extended concrete foundations. When the wind turbine runs at high speed, a large overturning moment is generated. The extended foundation uses the gravity of large area and large volume of concrete to resist the overturning moment. In terms of force, ordinary C30 concrete can serve under this condition, but the wind turbine tower (including the lower flange) will produce a large fatigue load, and concrete is a typical brittle material and is more sensitive to fatigue loads.

[0003] In actual production, the concrete structure of the wind turbine tower and the lower flange is prone to damage, and even the concrete around the tower will become "loose" and the lower flange will become "hollow". This phenomenon is more common in the foundation ring wind turbine foundation. Common reinforcement methods include grouting the lower cavity, chiseling out the upper concrete and then pouring, etc. In order to increase the bonding strength between the newly poured concrete and the wind turbine tower, several bolts are often welded around the wind turbine tower, such as Figure 1 As shown in the figure, the bolt type is a smooth steel nail with a nut on one end and a flat surface on the other end. This type of steel nail has many application cases in ordinary steel-concrete structures, so it has also been widely used in fan reinforcement in recent years. However, there are still the following problems when it is used to reinforce the foundation of the foundation ring fan:

[0004] (1) It is difficult to ensure the uniformity and strength of the weld on the general stud welding surface;

[0005] (2) The surface of the ordinary bolt rod is straight and smooth, and the bond strength with the newly poured concrete is limited, which is also not conducive to the coordinated service capability of the "concrete + bolt" structure.

[0006] Due to the existence of the above problems, general studs have been unable to meet the objective requirements of wind turbine reinforcement to a certain extent. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a foundation reinforcement bolt for a foundation ring type fan.

[0008] The utility model solves the technical problem by adopting a technical solution: constructing a foundation ring type fan foundation reinforcement bolt, comprising a base, a rod and an end cap, wherein the base has a first side surface and a second side surface opposite to each other, the rod has a first end and a second end opposite to each other, the first end of the rod is connected to the first side surface of the base, and the second end of the rod is connected to the end cap;

[0009] The second side surface of the base is provided with a plurality of protrusions, and the outer periphery of the rod portion is provided with a plurality of protrusions at intervals along the circumferential direction and the axial direction.

[0010] In some embodiments, the base, the stem and the end cap are coaxially arranged.

[0011] In some embodiments, the number of the protrusions is three, and the center of the three protrusions connected end to end in sequence forms a triangle.

[0012] In some embodiments, the triangle is an equilateral triangle, and the geometric center of the triangle is located on the axis of the base.

[0013] In some embodiments, the structures of all the protrusions are the same.

[0014] In some embodiments, the first side surface of the base and the second side surface of the base are curved surfaces.

[0015] In some embodiments, the end cap is cylindrical, and a diameter of the end cap is greater than a diameter of the rod.

[0016] In some embodiments, the protrusions include curved protrusions.

[0017] In some embodiments, the base ring fan foundation reinforcement bolts are an integrated structure.

[0018] In some embodiments, the base ring fan foundation reinforcement bolts are made of stainless steel.

[0019] The implementation of the utility model has the following beneficial effects: the base is welded to the inner wall or outer wall of the wind turbine tower. Due to the setting of the convex part, it can ensure that the second side of the base is fully welded to the inner wall or outer wall of the wind turbine tower, ensure that the weld is full, and avoid the loss of the restraining effect of the foundation ring type wind turbine foundation reinforcement bolt on the tower. The outer periphery of the rod is provided with a plurality of convexities at intervals along the circumferential direction and the axial direction, which can effectively increase the holding force between the concrete and the foundation ring type wind turbine foundation reinforcement bolt, which is conducive to the coordinated working ability of the "concrete + bolt" structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 is a schematic diagram of the structure of a bolt in the related art;

[0022] Figure 2 It is a schematic diagram of the structure of the foundation ring type fan foundation reinforcement bolts in some embodiments of the utility model;

[0023] Figure 3 It is a schematic diagram of the bottom structure of the foundation ring type fan foundation reinforcement bolts in some embodiments of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the foundation ring type fan foundation reinforcement bolts in some embodiments of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the foundation reinforcement bolts of the base ring type fan in other embodiments of the utility model. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0027] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0028] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0029] See also Figures 2 to 5 The utility model shows a foundation ring type fan foundation reinforcement bolt, including a base 10, a rod 20 and an end cap 30, the base 10 has a first side surface 10a and a second side surface 10b opposite to each other, the rod 20 has a first end and a second end opposite to each other, the first end of the rod 20 is connected to the first side surface 10a of the base 10, and the second end of the rod 20 is connected to the end cap 30.

[0030] The second side surface 10 b of the base 10 is provided with a plurality of protrusions 40 , and the outer periphery of the rod portion 20 is provided with a plurality of protrusions 21 spaced apart along the circumferential direction and the axial direction.

[0031] Among them, the base 10 is welded to the inner wall or outer wall of the wind turbine tower. Because of the setting of the protrusion 40, it can ensure that the second side surface 10b of the base 10 is fully welded to the inner wall or outer wall of the wind turbine tower, ensure that the weld is full, and ensure that the foundation ring type wind turbine foundation reinforcement bolt is completely perpendicular to the inner wall or outer wall of the wind turbine tower, avoiding the loss of the restraining effect of the foundation ring type wind turbine foundation reinforcement bolt on the tower. The outer periphery of the rod 20 is provided with a plurality of protrusions 21 at intervals along the circumferential direction and the axial direction, which can effectively increase the bond strength between the concrete and the foundation ring type wind turbine foundation reinforcement bolt, which is conducive to the coordinated working ability of the "concrete + bolt" structure.

[0032] Preferably, the base 10, the rod 20 and the end cap 30 are coaxially arranged. The projection of the base 10 is substantially circular, and the first side surface 10a of the base 10 and the second side surface 10b of the base 10 are curved surfaces. Figure 4 The second side surface 10b is a curved surface, which is concave toward the rod portion 20, and its shape is adapted to the inner wall surface of the wind turbine tower. Figure 5 The second side surface 10b is a curved surface, which is concavely arranged away from the rod portion 20, and its shape is adapted to the outer wall surface of the wind turbine tower. The first side surface 10a is also a curved surface. Of course, in some embodiments, the first side surface 10a can also be a flat surface. The bottom of the rod portion 20 can be curved and transitioned with the first side surface 10a, so as to avoid cracks at the bottom of the rod portion 20.

[0033] It can be understood that the second side 10b adopts an enlarged curved surface design, and the diameter of the curved surface follows the diameter of the wind turbine tower, which can effectively increase the welding area to increase the pull-out and pressure resistance of the weld. At the same time, the curved surface characteristics can ensure the uniform distribution of the weld, thereby improving the stress characteristics of the welding point and significantly increasing the tensile or compressive performance of the bolt.

[0034] In some embodiments, there are three protrusions 40, and the centers of the three protrusions 40 are connected end to end to form a triangle. It can be understood that the welding surface has three protrusions 40 distributed in a triangular shape, which can control the uniformity of the weld and the vertical characteristics with the wind turbine tower.

[0035] Furthermore, the triangle is an equilateral triangle, and the geometric center of the triangle is located on the axis of the base 10 .

[0036] In some embodiments, all the protrusions 40 have the same structure, that is, the shape and size are the same, and the protrusions 40 may be substantially in a flat cylindrical structure.

[0037] In some embodiments, the end cap 30 is cylindrical, and the diameter of the end cap 30 is greater than the diameter of the rod 20. The rod 20 can be roughly regarded as a cylindrical structure, and its length can be roughly 20-50 cm.

[0038] In some embodiments, the protrusion 21 includes a curved protrusion, and the protrusion 21 on the rod portion 20 can be in various structural forms, including but not limited to conical, trapezoidal, hemispherical, etc.

[0039] In some embodiments, the base ring fan foundation reinforcement bolts are an integrated structure.

[0040] In some embodiments, the base ring fan foundation reinforcement bolts are made of stainless steel material. Preferably, the base ring fan foundation reinforcement bolts are made of stainless steel 316L.

[0041] The foundation ring type fan foundation reinforcement bolt can not only be used for welding the fan tower and concrete structure, but also is suitable for welding between other curved steel structures and concrete.

[0042] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A foundation ring type fan foundation reinforcement bolt, characterized in that: The invention comprises a base (10), a rod (20) and an end cap (30), wherein the base (10) has a first side surface (10a) and a second side surface (10b) opposite to each other, the rod (20) has a first end and a second end opposite to each other, the first end of the rod (20) is connected to the first side surface (10a) of the base (10), and the second end of the rod (20) is connected to the end cap (30); The second side surface (10b) of the base (10) is provided with a plurality of protrusions (40), and the outer periphery of the rod portion (20) is provided with a plurality of protrusions (21) at intervals in the circumferential direction and the axial direction.

2. The foundation ring type fan foundation reinforcement bolt according to claim 1, characterized in that: The base (10), the rod portion (20) and the end cap (30) are coaxially arranged.

3. The foundation ring type fan foundation reinforcement bolt according to claim 1, characterized in that: The number of the convex parts (40) is three, and the center of the three convex parts (40) is connected end to end to form a triangle.

4. The foundation ring type fan foundation reinforcement bolt according to claim 3, characterized in that: The triangle is an equilateral triangle, and the geometric center of the triangle is located on the axis of the base (10).

5. The foundation ring type fan foundation reinforcement bolt according to claim 1, characterized in that: All the protrusions (40) have the same structure.

6. The foundation ring type fan foundation reinforcement bolt according to claim 1, characterized in that: The first side surface (10a) of the base (10) and the second side surface (10b) of the base (10) are curved surfaces.

7. The foundation ring type fan foundation reinforcement bolt according to claim 1, characterized in that: The end cap (30) is cylindrical, and the diameter of the end cap (30) is greater than the diameter of the rod (20).

8. The foundation ring type fan foundation reinforcement bolt according to claim 1, characterized in that: The protrusion (21) comprises a curved protrusion.

9. The foundation ring type fan foundation reinforcement bolt according to any one of claims 1 to 8, characterized in that: The foundation ring type fan foundation reinforcement bolts are an integrated structure.

10. The foundation ring type fan foundation reinforcement bolt according to any one of claims 1 to 8, characterized in that: The foundation reinforcement bolts of the basic ring type fan are made of stainless steel.

Images