Working anchor plate capable of intelligently feeding back stress

Abstract

The invention provides an intelligent stress feedback working anchor plate which comprises an anchor plate body and a bearing body fixed to the end of the anchor plate body, and a stress sensing element is arranged in the bearing body. The sensor further comprises a coil sheath surrounding the periphery of the bearing body, and data lines of the stress sensing elements are gathered in the coil sheath and then led out through a connector. The method has the beneficial effects that the data of the strain gauge can be directly collected through external reading equipment, the detection process is simple and convenient, the problem of low detection efficiency in a stress state is solved, and the cost is reduced. And the position of the anchorage device cannot be adjusted during detection, so that the anchoring performance of the anchorage device after the steel strand is tensioned cannot be negatively influenced. And continuous prestress monitoring in the whole life cycle of the wind generating set can be realized, and the safety of the wind generating set is ensured.

Description

Technical Field

[0001] The invention belongs to the field of steel strand anchoring, and in particular relates to a working anchor plate with intelligent feedback stress. Background Art

[0002] Wind energy is a clean, pollution-free, renewable energy source that has been used by people for a long time. Using wind power to generate electricity is very environmentally friendly and has huge wind energy reserves. Therefore, it is increasingly valued by countries around the world.

[0003] The device required for wind power generation is called a wind turbine. This type of wind turbine can be roughly divided into three parts: the wind rotor (including the tail rudder), the generator and the tower. At present, most wind turbines use concrete towers, which use steel strands to provide vertical tension. The stability of this force is a key factor in ensuring the healthy operation of the entire wind turbine.

[0004] During the construction and operation of wind turbines, the tension (cable force) of the steel strands needs to be tested to ensure that the tension meets the requirements. The existing testing method mainly uses the jack reverse pulling method, which is extremely inefficient and will also affect the anchorage of the anchor during the testing process. The cost of this testing method is also very high. Therefore, a new method or tensioning structure is needed to solve the problems of low testing efficiency and high cost. Summary of the invention

[0005] In view of this, the present invention aims to provide a working anchor plate with intelligent stress feedback.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A working anchor plate with intelligent feedback stress comprises an anchor plate body and a bearing body fixed at the end of the anchor plate body, wherein a stress sensing element is arranged inside the bearing body.

[0008] Furthermore, it also includes a coil sheath surrounding the outer periphery of the carrier, and the data lines of the stress sensing element are gathered into the coil sheath and then led out through a connector.

[0009] Furthermore, the anchor plate body is in the shape of a circular plate with a through hole in the middle, the carrier is in the shape of an annular structure, and the stress sensing elements are evenly distributed in the annular structure.

[0010] Furthermore, the anchor plate body is in the shape of a circular plate with a plurality of truncated cone-shaped anchor holes in the middle, the carrier is an annular structure, the carrier does not cover the anchor holes, and the stress sensing elements are evenly distributed in the annular structure; the diameter of the carrier is equal to the diameter of the anchor plate, and the thickness of the carrier is less than the thickness of the anchor plate.

[0011] Furthermore, the inner side of the coil sheath is provided with a wire groove.

[0012] Furthermore, the carrier and the coil sheath are made of metal.

[0013] Furthermore, the carrier is made of high-strength alloy structural steel.

[0014] Furthermore, the stress sensing element is a strain gauge sensor or a steel string sensor.

[0015] Furthermore, the connector is a metal cable waterproof connector.

[0016] Furthermore, the anchor plate body is fixed to the carrier by fastening screws.

[0017] Furthermore, the stress sensing elements are embedded inside the carrier, with a number of 4-8 and a depth of 20-50 mm.

[0018] The advantages and positive effects of the present invention are: the present invention can directly collect the data of the strain gauge through an external reading device, the detection process is simple and convenient, the problem of low detection efficiency under stress state is solved, and the cost is reduced. In addition, the position of the anchor will not be adjusted during the detection, and the anchoring performance of the anchor after the steel strand is tensioned will not be negatively affected. It can also realize continuous prestress monitoring throughout the life cycle of the wind turbine generator set, ensuring the safety of the wind turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 is a top view of the present invention;

[0022] Figure 3 It is a front view of the present invention;

[0023] Figure 4 is a cross-sectional view of the present invention;

[0024] Figure 5 It is a cross-sectional view of the present invention with a steel strand.

[0025] In the figure:

[0026] 1. Anchor plate body 2. Carrier 3. Stress sensing element 4. Fastening screws

[0027] 5. Coil sheath 6. Joint 7. Steel strand 8. Clip

[0028] 9. Carrier DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the structure of the device components will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and height should be included.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0034] like Figures 1 to 5 As shown, the present invention includes a circular plate-shaped anchor plate body 1 and an annular carrier 2 (made of high-strength alloy structural steel) fixed at the end of the anchor plate body 1, and stress sensing elements 3 are evenly arranged inside the carrier 2. The stress sensing element 3 is a strain gauge sensor (YL-ZN-GZY-0137 type sensing element). It also includes a metal coil sheath 5 surrounding the outer periphery of the carrier 1, and the data line of the stress sensing element 3 is gathered into the wire groove inside the coil sheath 5, and then led out through the connector 6. The connector 6 is a metal cable waterproof connector to protect the transmission of the data line from external interference.

[0035] During operation, this product is installed normally, and one end of the working anchor plate 1 with the bearing body 2 is installed and fixed close to the bearing object 9. The vertically placed prestressed steel strand 7 passes through the through hole of the anchor plate body 1, and the force value is transmitted to the anchor plate body 1 through the clip 8. The force of the anchor plate body 1 is transmitted to the bearing body 2. At this time, the bearing body 2 will undergo a slight deformation, which will cause the strain of the stress sensing element 3. The strain of the stress sensing element 3 is transmitted to the external reading device through the data line, so that the corresponding force parameters can be obtained.

[0036] The anchor plate body 1 is fixed to the carrier 2 by means of the fastening screws 4. The anchor plate body 1 and the carrier 2 are connected as one body, so that disassembly and assembly are convenient.

[0037] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A working anchor plate with intelligent feedback stress, characterized in that: It comprises an anchor plate body (1) and a carrier (2) fixed to the end of the anchor plate body (1), wherein a stress sensing element (3) is arranged inside the carrier (2).

2. The working anchor plate with intelligent feedback stress according to claim 1 is characterized in that: It also includes a coil sheath (5) surrounding the outer periphery of the carrier (1), and the data line of the stress sensing element (3) is gathered into the coil sheath (5) and then led out through a connector (6).

3. The working anchor plate with intelligent feedback stress according to claim 1 is characterized in that: The anchor plate body (1) is in the shape of a circular plate with a plurality of truncated cone-shaped anchor holes in the middle; the carrier (2) is in the shape of an annular structure, the carrier does not cover the anchor holes; and the stress sensing elements (3) are evenly distributed in the annular structure; The diameter of the bearing body is equal to the diameter of the anchor plate, and the thickness of the bearing body is less than the thickness of the anchor plate.

4. The working anchor plate with intelligent feedback stress according to claim 3 is characterized in that: The inner side of the coil sheath (5) is provided with a wire groove.

5. The working anchor plate with intelligent feedback stress according to claim 2 is characterized in that: The carrier (2) and the coil sheath (5) are made of metal.

6. The working anchor plate with intelligent feedback stress according to claim 5 is characterized in that: The carrier (2) is made of high-strength alloy structural steel.

7. The working anchor plate with intelligent feedback stress according to claim 1, characterized in that: The stress sensing element (3) is a strain gauge sensor or a steel string sensor.

8. The working anchor plate with intelligent feedback stress according to claim 2 is characterized in that: The connector (6) is a metal cable waterproof connector.

9. The working anchor plate with intelligent feedback stress according to claim 1, characterized in that: The anchor plate body (1) is fixed to the carrier (2) by means of fastening screws (4).

10. The working anchor plate with intelligent feedback stress according to claim 1, characterized in that: The stress sensing elements (3) are embedded in the carrier (2), the number of which is 4-8 and the depth of which is 20-50 mm.

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