Wind power foundation

Abstract

The utility model discloses a wind power foundation which comprises a wind power foundation body and a bottom cavity formed in the wind power foundation body, a plurality of connecting bolts are annularly arranged on the wind power foundation body, the bottoms of the connecting bolts extend into the bottom cavity and are connected with bottom nuts, and an annular sliding rail is arranged on the side wall of the bottom cavity. According to the wind power foundation, the annular sliding rail is arranged in the bottom cavity of the wind power foundation, the multiple supporting and positioning assemblies matched with the connecting bolts one to one are arranged on the annular sliding rail, and the supporting and positioning assemblies can be movably adjusted and used for supporting and positioning the bottom nuts. The connecting bolt is prevented from being in a suspended state through limiting and supporting of the supporting and positioning assembly, the connecting stability of the connecting bolt is guaranteed, and the connecting safety of the wind power foundation is powerfully improved.

Description

Technical Field

[0001] The utility model relates to the field of wind power foundations, and particularly relates to a wind power foundation. Background Art

[0002] The base foundation of a wind turbine is cast with reinforced concrete, and a plurality of base bolts are annularly installed around it to fix the wind turbine tower barrel. In order to facilitate the replacement of the base bolts damaged by fatigue, the existing wind power foundation is provided with a connected central channel and a bottom cavity inside. The lower part of the base bolt penetrates into the bottom cavity and is connected with the bottom nut. In this way, the operator enters the bottom cavity through the central channel to disassemble the bottom nut of the fatigued base bolt, and pulls out the base bolt from the top of the wind power foundation for replacement (a prefabricated hole is provided when the base bolt is inserted).

[0003] However, the lower part of the base bolt is in a suspended state, and the vibration generated by the rotation of the upper wind blades is transmitted to the base bolt. Once the suspended base bolt falls off from the base bolt, the stability of the connection of the base bolt is affected, and the safety of the wind power foundation is affected. Content of the Utility Model

[0004] In order to solve the above existing problems, the utility model provides a wind power foundation.

[0005] The utility model is realized by the following technical solutions:

[0006] A wind power foundation includes a wind power foundation body and a bottom cavity opened inside it. A plurality of connecting bolts are annularly arranged on the wind power foundation body. The bottom of the connecting bolts extends into the bottom cavity and is connected with the bottom nut. A circular slide rail is arranged on the side wall of the bottom cavity, and a plurality of support and positioning components capable of moving and adjusting to support and position the bottom nut are arranged on the circular slide rail.

[0007] Further optionally, the circular slide rail includes a circular ring that fits with the inner wall of the bottom cavity. An L-shaped clamping block is fixed on the side of the circular ring, and the L-shaped clamping block and the circular ring form a circular clamping groove.

[0008] Further optionally, the support and positioning component includes a frame-shaped clamping block clamped with the circular clamping groove. A positioning block that fits with the bottom of the bottom nut is hinged and fixed on the side of the frame-shaped clamping block. The bottom end of the middle part of the positioning block is fixedly connected with the side of the frame-shaped clamping block through an inclined compression spring.

[0009] Further optionally, a positioning groove passing through the connecting bolt is opened at the front end of the positioning block.

[0010] Further optionally, a central channel extending to the top of the wind power foundation body is opened at the upper part of the center of the bottom cavity, and a ladder is installed inside the central channel.

[0011] Compared with the existing technology, the beneficial effects of the present utility model are as follows: By arranging an annular slide rail in the bottom cavity of the wind power foundation and arranging a plurality of support and positioning components on the annular slide rail that are in one-to-one match with the connecting bolts, the connecting bolts are prevented from being in a suspended state through the restriction and support of the support and positioning components, ensuring the stability of the connection of the connecting bolts and effectively improving the connection safety of the wind power foundation. Description of the Drawings

[0012] Figure 1 is a three-dimensional schematic diagram of the structure of the present utility model in a sectional view;

[0013] Figure 2 is Figure 1 a partially enlarged schematic diagram of the local structure in

[0014] In the figure: wind power foundation body 1, central channel 2, bottom cavity 3, connecting bolt 4, bottom nut 5, positioning mechanism 6, annular ring 7, L-shaped block 8, annular slot 9, frame-shaped block 10, positioning block 11, positioning slot 12, compression spring 13. Detailed Embodiment

[0015] The present utility model will be further described in detail below in conjunction with the drawings and the specific embodiments:

[0016] As Figure 1 shown, a wind power foundation includes a wind power foundation body 1 and a bottom cavity 3 opened inside it. A plurality of connecting bolts 4 are arranged annularly on the wind power foundation body 1. The bottom of the connecting bolts 4 extends into the bottom cavity 3 and is connected to the bottom nut 5. An annular slide rail is arranged on the side wall of the bottom cavity 3, and a plurality of support and positioning components capable of moving and adjusting to support and position the bottom nut 5 are arranged on the annular slide rail.

[0017] As Figure 2 shown, the annular slide rail includes an annular ring 7 that fits against the inner wall of the bottom cavity 3. Installing the annular ring 7 does not damage the overall structure of the wind power foundation body 1. An L-shaped block 8 is fixed on the side of the annular ring 7, and the L-shaped block 8 and the annular ring 7 form an annular slot 9.

[0018] As Figure 2 shown, the support and positioning component includes a frame-shaped block 10 that is clamped in the annular slot 9. The shape of the frame-shaped block 10 is arc-shaped to facilitate its movement inside the annular slot 9. The support and positioning component is adjusted by moving the frame-shaped block 10 inside the annular slot 9, which is convenient for the precise positioning adjustment of the support and positioning component and the bottom nut 5. A positioning block 11 that fits against the bottom of the bottom nut 5 is hinged and fixed on the side of the frame-shaped block 10. The bottom end of the middle part of the positioning block 11 is fixedly connected to the side of the frame-shaped block 10 through an inclined compression spring 13. The compression spring 13 always ensures the pressure of the positioning block 11 to restrict the bottom nut 5 and prevent it from falling off.

[0019] like Figure 2 As shown, a positioning slot 12 is formed at the front end of the positioning block 11 to pass through the connecting bolt 4. The positioning slot 12 prevents the positioning block 11 and the bottom nut 5 from shifting left and right, thereby ensuring that the positioning block 11 and the bottom nut 5 are aligned and matched.

[0020] A central channel 2 extending to the top of the wind power foundation body 1 is opened in the central upper part of the bottom cavity 3 , and a ladder is installed inside the central channel 2 .

[0021] The implementation principle of a wind power foundation in the embodiment of the present application is:

[0022] When replacing the fatigue damaged connecting bolt 4, the maintenance personnel climb the ladder through the central channel 2 to enter the bottom cavity 3, and now press down the positioning block 11 of the supporting positioning assembly of the fatigue damaged connecting bolt 4 to make it separate from the bottom nut 5. The operator uses a wrench to loosen the bottom nut 5 and remove it, and takes out the fatigue damaged connecting bolt 4 from the top of the wind power foundation body 1 for replacement. After replacement, the positioning block 11 will be reset to fit the replaced bottom nut 5;

[0023] Under the pressure of the lower inclined compression spring 13, the positioning block 11 always maintains a supporting state for the bottom nut 5 to prevent the connecting bolt 4 from being in a suspended state. Even if the bottom nut 5 is in a loose state, it will not fall down and separate from the connecting bolt 4, thus ensuring the stability of the connection of the connecting bolt 4 and effectively improving the safety of the wind power foundation connection.

[0024] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A wind power foundation, comprising a wind power foundation body (1) and a bottom cavity (3) opened therein, wherein the wind power foundation body (1) is provided with a plurality of connecting bolts (4) arranged in a ring shape, wherein the bottom of the connecting bolts (4) extends into the bottom cavity (3) and is connected to a bottom nut (5), wherein: The side wall of the bottom cavity (3) is provided with an annular slide rail, and the annular slide rail is provided with a plurality of support and positioning components that can be moved and adjusted and support and position the bottom nut (5).

2. A wind power foundation according to claim 1, characterized in that: The annular slide rail comprises an annular ring (7) which is in contact with the inner wall of the bottom cavity (3); an L-shaped clamping block (8) is fixed to the side of the annular ring (7); the L-shaped clamping block (8) and the annular ring (7) form an annular clamping groove (9).

3. A wind power foundation according to claim 1, characterized in that: The supporting positioning assembly comprises a frame-shaped clamping block (10) clamped with the annular clamping groove (9); a positioning block (11) is hingedly fixed to the side of the frame-shaped clamping block (10) and is in contact with the bottom of the bottom nut (5); and the bottom end of the middle part of the positioning block (11) is fixedly connected to the side of the frame-shaped clamping block (10) via an inclined compression spring (13).

4. A wind power foundation according to claim 3, characterized in that: The front end of the positioning block (11) is provided with a positioning slot (12) for passing the connecting bolt (4).

5. A wind power foundation according to claim 2, characterized in that: A central channel (2) extending to the top of the wind power foundation body (1) is provided in the central upper part of the bottom cavity (3), and a ladder is installed inside the central channel (2).

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