Substrate reaction force diffusion device for reducing separation area of fan foundation

Abstract

The utility model discloses a base counterforce diffusion device capable of reducing a fan foundation disengagement area in the technical field of fan foundation structures, which comprises a base counterforce diffusion assembly, the base counterforce diffusion assembly comprises a honeycomb-shaped base, a plurality of mounting holes are formed in the honeycomb-shaped base, and the mounting holes are formed in the honeycomb-shaped base. And rubber supports are installed in the multiple installation holes, a cover plate is installed on the tops of the rubber supports, a cushion layer is arranged on the top of the cover plate, and a fan foundation body is installed on the top of the cushion layer. The base counter-force diffusion assembly is arranged in the center of the bottom of the fan foundation body, and the compression modulus of the rubber support is smaller than that of foundation soil, so that the base counter-force diffusion assembly can enable the counter-force of the fan foundation body to be concentrated towards the edge of the foundation, and the effect of horizontal load is achieved. The stabilizing moment of the foundation is larger, and the anti-disengagement capacity of the foundation is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of fan foundation structures, in particular to a base reaction force diffusion device for reducing the detachment area of ​​a fan foundation. Background Art

[0002] The cost of wind turbine foundations accounts for 20%-40% of the total cost of wind farm construction. Optimizing wind turbine foundation structures and reducing wind turbine foundation costs are important measures to promote wind power parity. For wind turbine foundations, there are many factors that affect the foundation cost, including foundation bearing capacity and disconnected area. When the foundation bearing capacity is greater than 180 kPa, the disconnected area of ​​the base becomes the most important controlling factor. According to the "Design Specifications for Wind Turbine Foundations of Onshore Wind Farm Projects": Under extreme operating conditions, the disconnected area of ​​the foundation shall not exceed 25% of the total base area. Therefore, through reasonable wind turbine foundation structural design, suppressing the disconnection degree of the foundation bottom under horizontal loads, thereby achieving the goal of reducing the amount of foundation concrete and steel bars, is the key to controlling foundation costs. Utility Model Content

[0003] In order to improve the above-mentioned problem that the fan foundation cannot meet the specification's detached area requirements, resulting in changes in foundation size and form, which in turn causes cost increases, the utility model provides a base reaction force diffusion device that reduces the detached area of ​​the fan foundation.

[0004] The utility model provides a base reaction force diffusion device for reducing the detachment area of ​​a fan foundation, which adopts the following technical solutions:

[0005] A base reaction force diffusion device for reducing the detachment area of ​​a fan foundation includes a base reaction force diffusion component, the base reaction force diffusion component includes a honeycomb base, a plurality of mounting holes are opened inside the honeycomb base, a rubber support is installed inside the plurality of mounting holes, a cover plate is installed on the top of the rubber support, a cushion layer is provided on the top of the cover plate, and a fan foundation body is installed on the top of the cushion layer.

[0006] By adopting the above technical solution, the base reaction force diffusion assembly is set at the center point of the bottom of the wind turbine foundation body. Since the compression modulus of the rubber bearing is smaller than that of the foundation soil, the base reaction force diffusion assembly can concentrate the reaction force of the wind turbine foundation body to the edge of the foundation, thereby achieving the foundation optimization design requirements of greater foundation stability torque and stronger foundation anti-detachment ability under horizontal load.

[0007] Optionally, the height of the rubber support is slightly greater than the depth of the mounting hole.

[0008] By adopting the above technical solution, when the upper part of the base reaction force diffusion assembly is under pressure, the rubber support is deformed first, driving the cover plate to descend. When the height of the deformed rubber support is consistent with the depth of the mounting hole, the cover plate is supported by the honeycomb base.

[0009] Optionally, the rubber support and the mounting hole are both regular hexagons, and the side length of the rubber support is smaller than the side length of the mounting hole.

[0010] By adopting the above technical solution, space can be provided for the compression deformation of the rubber bearing.

[0011] Optionally, a plurality of the mounting holes are regularly arranged inside the honeycomb-shaped base, and the plurality of the mounting holes are combined into a honeycomb structure.

[0012] By adopting the above technical solution, the vertical and horizontal compressive resistance of the honeycomb base is improved.

[0013] Optionally, a protrusion is provided at the edge of the bottom of the cover plate, the inner size of the protrusion is consistent with the size of the honeycomb base, and the bottom end of the protrusion is lower than the top end of the honeycomb base.

[0014] By adopting the above technical solution, on the one hand, it is ensured that the cover plate can only move in the vertical direction, and on the other hand, the base reaction force diffusion component is also made waterproof.

[0015] Optionally, the outer shape of the substrate reaction force diffusion component is not limited to a hexagon.

[0016] By adopting the above technical solution, the shape of the substrate reaction force diffusion component can be changed according to the basic shape to meet different usage requirements.

[0017] Optionally, foundation soil is provided at the bottom of the base reaction force diffusion component, and the compression modulus of the rubber bearing is smaller than that of the foundation soil.

[0018] By adopting the above technical solution, the reaction force provided by the base reaction force diffusion assembly in the middle of the wind turbine foundation body is smaller than the reaction force provided by the foundation soil around the wind turbine foundation body, that is, the reaction force of the wind turbine foundation body is concentrated toward its edge. Therefore, under the action of extreme horizontal loads, the foundation reaction force can provide a greater anti-rotational torque, and the foundation's anti-disengagement ability is improved.

[0019] In summary, the present invention has at least one of the following beneficial effects:

[0020] By arranging the base reaction force diffusion component at the center of the bottom of the wind turbine foundation body, since the compression modulus of the rubber bearing is smaller than that of the foundation soil, the base reaction force diffusion component can concentrate the reaction force of the wind turbine foundation body to the edge of the foundation, thereby achieving a greater foundation stability torque and stronger anti-detachment ability of the foundation under horizontal load.

[0021] By setting up a cover plate and a honeycomb base, and the inner side size of the protrusion at the bottom of the cover plate is consistent with the size of the honeycomb base, when the cover plate drops to contact the honeycomb base, the overlying weight of the cover plate is directly supported by the honeycomb base. At this time, the reaction force of the wind turbine foundation body will stop concentrating on the edge of the foundation, thereby avoiding local structural damage caused by excessive differences in the base reaction force under extreme conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is an exploded view of the base reaction force diffusion device of the present utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the base reaction force diffusion device of the present utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the honeycomb base of the present invention;

[0026] Figure 4 This is a schematic diagram of the cover plate structure of the present invention when viewed from above;

[0027] Figure 5 This is a side view of the structure of the base reaction force diffusion device connected to the fan foundation of the utility model;

[0028] Figure 6 This is a schematic diagram of the bottom view of the structure of the base reaction force diffusion device connected to the fan foundation of the utility model;

[0029] Figure 7 This is a schematic cross-sectional view of the connection between the base reaction force diffusion device and the fan foundation of the utility model.

[0030] In the figure: 1. Base reaction force diffusion assembly; 101. Cover plate; 102. Rubber support; 103. Honeycomb base; 1031. Mounting hole; 2. Fan foundation body; 3. Cushion layer. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-7 The utility model is described in further detail.

[0032] Please refer to the attached figure in the instruction manual Figure 1 、 Figure 2 、 Figure 3 and Figure 6 The present invention provides an embodiment of a base reaction force diffusion device for reducing the area of ​​wind turbine foundation detachment, comprising a base reaction force diffusion assembly 1, which includes a honeycomb base 103. The outer shape of the base reaction force diffusion assembly 1 is not limited to a hexagon. This allows the shape of the base reaction force diffusion assembly 1 to be varied according to the foundation shape to meet different usage requirements.

[0033] Please refer to the attached figure in the instruction manual Figure 1 、 Figure 3 、 Figure 5 and Figure 7 The honeycomb-shaped base 103 has several mounting holes 1031 formed inside, each of which is fitted with a rubber support 102. A cover plate 101 is mounted on top of the rubber support 102, with the height of the rubber support 102 slightly greater than the depth of the mounting holes 1031. When pressure is applied to the upper portion of the base reaction force diffuser assembly 1, the rubber support 102 deforms first, driving the cover plate 101 downward. When the height of the deformed rubber support 102 matches the depth of the mounting holes 1031, the cover plate 101 is supported by the honeycomb-shaped base 103.

[0034] Please refer to the attached figure in the instruction manual Figure 1 and Figure 3 Both the rubber support 102 and the mounting hole 1031 are regular hexagons, with the side length of the rubber support 102 being smaller than that of the mounting hole 1031. This provides space for the rubber support 102 to compress and deform. Several mounting holes 1031 are regularly arranged within the honeycomb base 103, forming a honeycomb structure. This improves the honeycomb base 103's ability to withstand both vertical and horizontal compression.

[0035] Please refer to the attached figure in the instruction manual Figure 1 、 Figure 2 、 Figure 4 and Figure 5 The bottom edge of the cover plate 101 is provided with a protrusion, the inner side of which is consistent with the size of the honeycomb base 103, and the bottom of the protrusion is lower than the top of the honeycomb base 103. On the one hand, it ensures that the cover plate 101 can only move in the vertical direction, and on the other hand, it also makes the base reaction force diffusion assembly 1 waterproof.

[0036] Please refer to the attached figure in the instruction manual Figure 5 、 Figure 6 and Figure 7A cushion layer 3 is placed on top of the cover plate 101, and the wind turbine foundation body 2 is mounted on top of the cushion layer 3. Foundation soil is placed at the bottom of the base reaction force diffusion assembly, and the compression modulus of the rubber bearing 102 is smaller than that of the foundation soil. The reaction force provided by the base reaction force diffusion assembly 1 in the middle of the wind turbine foundation body 2 is smaller than the reaction force provided by the foundation soil around the wind turbine foundation body 2. In other words, the reaction force of the wind turbine foundation body 2 is concentrated towards its edges. Therefore, under extreme horizontal loads, the foundation reaction force can provide a greater anti-rotational torque, improving the foundation's ability to resist disengagement.

[0037] Working principle: Since the compression modulus of the rubber bearing 102 is smaller than that of the foundation soil, the reaction force provided by the base reaction force diffusion component 1 in the middle of the wind turbine foundation body 2 is smaller than the reaction force provided by the foundation soil around the wind turbine foundation body 2, that is, the reaction force of the wind turbine foundation body 2 is concentrated to the edge of the foundation. Therefore, under the action of extreme horizontal loads, the foundation reaction force can provide a greater anti-rotational torque, and the foundation's anti-disengagement ability is improved.

[0038] When the upper part of the base reaction force diffusion component 1 is under pressure, the rubber support 102 will deform, and then the cover plate 101 will be driven down through the rubber support 102. When the height of the deformed rubber support 102 is consistent with the depth of the honeycomb base 103, the cover plate 101 will be supported by the honeycomb base 103, and the reaction force of the wind turbine foundation body 2 will stop concentrating on the edge, thereby avoiding local structural damage caused by excessive differences in the base reaction force under extreme conditions.

[0039] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A base reaction force diffusion device for reducing the detachment area of ​​a fan foundation, comprising a base reaction force diffusion component (1), characterized in that: The base reaction force diffusion component (1) comprises a honeycomb base (103), a plurality of mounting holes (1031) are provided inside the honeycomb base (103), a rubber support (102) is installed inside each of the mounting holes (1031), a cover plate (101) is installed on the top of the rubber support (102), a cushion layer (3) is provided on the top of the cover plate (101), and a fan base body (2) is installed on the top of the cushion layer (3).

2. The base reaction force diffusion device for reducing the detachment area of ​​a fan foundation according to claim 1, characterized in that: The height of the rubber support (102) is slightly greater than the depth of the mounting hole (1031).

3. The base reaction force diffusion device for reducing the detachment area of ​​a fan foundation according to claim 1, characterized in that: The rubber support (102) and the mounting hole (1031) are both regular hexagons, and the side length of the rubber support (102) is smaller than the side length of the mounting hole (1031).

4. The base reaction force diffusion device for reducing the detachment area of ​​a fan foundation according to claim 1, characterized in that: A plurality of the mounting holes (1031) are regularly arranged inside the honeycomb base (103), and the plurality of the mounting holes (1031) are combined into a honeycomb structure.

5. The base reaction force diffusion device for reducing the detachment area of ​​a fan foundation according to claim 1, characterized in that: A protrusion is provided at the edge of the bottom of the cover plate (101), the inner size of the protrusion is consistent with the size of the honeycomb base (103), and the bottom end of the protrusion is lower than the top end of the honeycomb base (103).

6. The base reaction force diffusion device for reducing the detachment area of ​​a fan foundation according to claim 1, characterized in that: The outer shape of the substrate reaction force diffusion component (1) is not limited to a hexagon.

7. The base reaction force diffusion device for reducing the detachment area of ​​a fan foundation according to claim 1, characterized in that: The bottom of the base reaction force diffusion component (1) is provided with foundation soil, and the compression modulus of the rubber bearing (102) is smaller than that of the foundation soil.

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