Land large unit wind power equipment supporting device
By setting up a sloping surface with a haunch beam structure and anchor bolts in the wind turbine support device, the problem of excessive reinforcement in conventional wind turbine foundations is solved, the amount of reinforcement in the foundation is reduced, and the cost of wind turbine foundations is lowered.
Patent Information
- Application Number
- CN202520261901.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Under conventional wind turbine foundation cross-section design, the foundation reinforcement is relatively large, resulting in a large amount of steel consumption and poor economic efficiency.
Design a support device for large onshore wind turbine units. By setting a sloping surface on the side of the column to form a haunch beam structure, the calculated height at the maximum bending moment section of the foundation is increased by using the first and second foundations, the amount of reinforcement is reduced, and the column is fixed to the ground by anchor bolts.
Under the same bending moment, the crack requirements are met, the amount of reinforcement in the foundation is reduced by 8%, and the cost of the wind turbine foundation is reduced.
Smart Images
Figure CN223707824U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wind power equipment technical field especially relates to a land large unit wind power equipment support device. BACKGROUND
[0002] At present, the single machine installed capacity of land wind power project is larger and larger, and the load at the bottom of the tower drum is also larger, in order to meet the requirement that the wind turbine foundation bottom does not appear to be separated under normal operating conditions, the base diameter and foundation burial depth are usually controlled through calculation under normal operating conditions.
[0003] Under the form of conventional wind turbine foundation section, in order to meet the crack requirement under normal operating conditions, the foundation reinforcement is large, the steel consumption is more, and the economy is poor.
[0004] Therefore, in order to solve the problems that the foundation reinforcement is large, the steel consumption is more, and the economy is poor under the form of conventional wind turbine foundation section to meet the crack requirement under normal operating conditions, a land large unit wind power equipment support device can be designed, the side of the column is provided as a slope surface, which is similar to a haunched beam, so that the foundation reinforcement can be reduced by about 8% to meet the crack requirement under the same bending moment, thereby reducing the cost of wind turbine foundation. SUMMARY
[0005] In order to solve the problems that the foundation reinforcement is large, the steel consumption is more, and the economy is poor under the form of conventional wind turbine foundation section to meet the crack requirement under normal operating conditions.
[0006] The technical scheme of the utility model is as follows: a land large unit wind power equipment support device, comprising a ground, a column, a first foundation, a second foundation and an anchor bolt, the column is fixedly installed above the ground, the first foundation is arranged at the periphery of the column, the side wall of the first foundation is inclined, the second foundation is arranged below the first foundation, the side wall of the second foundation is inclined, the inclination angle of the side wall of the second foundation is smaller than the inclination angle of the first foundation, the first foundation forms a haunched beam structure between the second foundation and the column, and the anchor bolt is arranged in the interior of the column.
[0007] Preferably, the tower drum of the wind power equipment is installed through the column, the column is reinforced and supported through the first foundation and the second foundation, the first foundation forms a haunched beam structure between the second foundation and the column, the calculation height of the maximum bending moment section of the foundation can be increased by the contact between the straight wall support of the column and the second foundation, the purpose of reducing the foundation reinforcement is achieved by increasing the calculation height, and the column can be stably anchored on the ground through the anchor bolt.
[0008] Preferably, the anchor bolt is provided in multiple groups, one group of anchor bolts is provided with two anchor bolts, and the multiple groups of anchor bolts are arranged in a circle around the axis of the column.
[0009] Preferably, an annular groove is formed on the surface of the ground, and multiple sets of pre-embedded holes are formed inside the annular groove, with the multiple sets of pre-embedded holes arranged circumferentially around the axis of the annular groove.
[0010] Preferably, a pre-embedded part is fixedly installed inside the pre-embedded hole, and a lower anchor plate is fixedly installed above the pre-embedded part. An anchor bolt passes through the lower anchor plate, and a second nut is provided around the anchor bolt. The second nut is threadedly connected to the anchor bolt and is located below the lower anchor plate.
[0011] Preferably, multiple sets of high-strength grouting material are fixedly installed on the top of the column, and an upper anchor plate is fixedly installed on top of the high-strength grouting material.
[0012] Preferably, a bottom flange is provided above the upper anchor plate, and the anchor bolt passes through the high-strength grout, the upper anchor plate and the bottom flange. A first nut is provided around the anchor bolt, and the first nut is threadedly connected to the anchor bolt. The first nut is located above the bottom flange.
[0013] Preferably, both the outer perimeter of the first foundation and the outer perimeter of the second foundation are provided with an anti-corrosion layer.
[0014] The beneficial effects of this utility model are:
[0015] By forming two inclined sections on the pedestal with the first and second foundations, the slope of the second foundation is the same as that of a conventional foundation. The first foundation is usually a straight wall of the pedestal. Since the bending moment reaction force is the greatest at the pedestal and the first foundation, the calculated height at the section with the maximum bending moment can be increased by using the straight wall of the pedestal relative to the conventional case. By increasing the calculated height, the reinforcement of the foundation can be reduced. Under the same bending moment, the amount of reinforcement in the foundation will be reduced by about 8% to meet the cracking requirements, thereby reducing the cost of the wind turbine foundation. Attached Figure Description
[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the support device for large onshore wind turbine units according to this utility model.
[0017] Figure 2 The diagram shown is a three-dimensional structural representation of the support device for onshore large-scale wind power equipment of this utility model above ground.
[0018] Figure 3 The diagram shown is a three-dimensional cross-sectional view of the support device for onshore large-scale wind power equipment of this utility model.
[0019] Figure 4 The diagram shown is a three-dimensional structural diagram of the anchor bolt of the support device for large onshore wind turbine units of this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1. Ground; 101. Annular groove; 102. Embedded hole; 103. Embedded part; 104. Lower anchor plate; 2. Column; 201. High-strength grout; 202. Upper anchor plate; 203. Bottom flange; 3. First foundation; 4. Second foundation; 5. Anti-corrosion layer; 6. Anchor bolt; 601. First nut; 602. Second nut. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Please see Figures 1-4 This utility model provides an embodiment of a support device for a large onshore wind turbine unit, comprising a ground 1, a support column 2, a first foundation 3, a second foundation 4, and anchor bolts 6. The support column 2 is fixedly installed above the ground 1. The first foundation 3 is located around the support column 2, with its sidewall inclined. The second foundation 4 is located below the first foundation 3, with its sidewall also inclined. The inclination angle of the sidewall of the second foundation 4 is less than that of the first foundation 3. The first foundation 3 forms a haunch beam structure between the second foundation 4 and the support column 2. The anchor bolts 6 are located inside the support column 2. The support column 2 is used to install the tower of the wind turbine. The first foundation 3 and the second foundation 4 reinforce and support the support column 2. The haunch beam structure formed between the first foundation 3 and the second foundation 4 and the support column 2, with the straight wall support of the support column 2 in contact with the second foundation 4, increases the calculated height at the maximum bending moment section of the foundation. This increases the calculated height and reduces the need for foundation reinforcement. The anchor bolts 6 securely anchor the support column 2 to the ground 1.
[0023] Please see Figures 1-3In this embodiment, multiple sets of anchor bolts 6 are provided, with two anchor bolts in each set, and the multiple sets of anchor bolts 6 are arranged circumferentially around the axis of the column 2. An annular groove 101 is formed on the surface of the ground 1, and multiple sets of pre-embedded holes 102 are formed inside the annular groove 101, with the multiple sets of pre-embedded holes arranged circumferentially around the axis of the annular groove 101. A pre-embedded part 103 is fixedly installed inside the pre-embedded hole 102, and a lower anchor plate 104 is fixedly installed above the pre-embedded part 103. The anchor bolt 6 passes through the lower anchor plate 104, and a second nut 602 is provided around the anchor bolt 6. The second nut 602 is threadedly connected to the anchor bolt 6 and is located below the lower anchor plate 104. The annular groove 101 provides installation space for the pre-embedded part 103, and the pre-embedded hole 102 can be used to pre-embed and fix the pre-embedded part 103 in the ground 1. The pre-embedded part 103 is used to fix the lower anchor plate 104. 04. Installation is carried out. The lower anchor plate 104 can be used with the second nut 602 to fix the lower end of the anchor bolt 6. Multiple sets of high-strength grout 201 are fixedly installed on the upper part of the column 2. The upper anchor plate 202 is fixedly installed on the upper part of the high-strength grout 201. The bottom flange 203 is set on the upper part of the upper anchor plate 202. The anchor bolt 6 passes through the high-strength grout 201, the upper anchor plate 202 and the bottom flange 203. The first nut 601 is set on the periphery of the anchor bolt 6. The first nut 601 is threaded to the anchor bolt 6 and is located on the bottom flange 203. The high-strength grout 201 is used to pad the space between the upper anchor plate 202 and the column 2. The upper anchor plate 202 can be used with the first nut 601 to fix the upper end of the anchor bolt 6. The bottom flange 203 can facilitate the subsequent fixing of the column 2 to the wind turbine tower.
[0024] Please see Figure 4 In this embodiment, an anti-corrosion layer 5 is provided around the periphery of the first foundation 3 and the periphery of the second foundation 4. By providing the anti-corrosion layer 5, the first foundation 3 and the second foundation 4 can be protected, thereby extending the service life of the first foundation 3 and the second foundation 4.
[0025] During the work, six pairs of anchor bolts can be used to stably anchor the column 2 to the ground 1, ensuring the stability of the subsequent wind power equipment installation.
[0026] By utilizing the two inclined sections formed by the first foundation 3 and the second foundation 4 on the pedestal 2, the slope of the second foundation 4 is the same as that of a conventional foundation. The first foundation 3 is conventionally the straight wall of the pedestal 2. Since the bending moment reaction force is the largest at the pedestal 2 and the first foundation 3, the calculated height at the section with the largest bending moment can be increased by using the straight wall of the first foundation 3 relative to the pedestal 2. By increasing the calculated height, the purpose of reducing the foundation reinforcement can be achieved. Under the same bending moment, the amount of reinforcement in the foundation will be reduced by about 8% to meet the crack requirements, thereby reducing the cost of the wind turbine foundation.
[0027] Through the above steps, the calculated height at the maximum bending moment section of the foundation can be increased by using the straight wall of the first foundation 3 relative to the column 2. By increasing the calculated height, the foundation reinforcement can be reduced, thereby reducing the cost of the wind turbine foundation. This solves the problem that under the conventional wind turbine foundation cross-section, the foundation reinforcement is large, the steel consumption is large, and the economy is poor in order to meet the crack requirements under normal operating conditions.
[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A support device for large onshore wind turbine units, comprising a ground (1), characterized in that: It also includes a pedestal (2), a first foundation (3), a second foundation (4) and anchor bolts (6). The pedestal (2) is fixedly installed above the ground (1). The first foundation (3) is set on the periphery of the pedestal (2). The side wall of the first foundation (3) is inclined. The second foundation (4) is set below the first foundation (3). The side wall of the second foundation (4) is inclined. The inclination angle of the side wall of the second foundation (4) is smaller than that of the first foundation (3). The first foundation (3) forms a haunch beam structure between the second foundation (4) and the pedestal (2). The anchor bolts (6) are set inside the pedestal (2).
2. The support device for large onshore wind turbine units according to claim 1, characterized in that: There are multiple sets of anchor bolts (6), with two anchor bolts in each set, and the multiple sets of anchor bolts (6) are arranged in a circle around the axis of the column (2).
3. The support device for large onshore wind turbine units according to claim 1, characterized in that: An annular groove (101) is provided on the surface of the ground (1). Multiple sets of pre-embedded holes (102) are provided inside the annular groove (101). The multiple sets of pre-embedded holes are arranged circumferentially around the axis of the annular groove (101).
4. The support device for onshore large-scale wind power equipment according to claim 3, characterized in that: An embedded part (103) is fixedly installed inside the pre-embedded hole (102). A lower anchor plate (104) is fixedly installed above the embedded part (103). An anchor bolt (6) passes through the lower anchor plate (104). A second nut (602) is provided around the anchor bolt (6). The second nut (602) is threadedly connected to the anchor bolt (6). The second nut (602) is located below the lower anchor plate (104).
5. A support device for large onshore wind turbine units according to claim 1, characterized in that: Multiple sets of high-strength grouting material (201) are fixedly installed on the top of the column (2), and an upper anchor plate (202) is fixedly installed on the top of the high-strength grouting material (201).
6. A support device for onshore large-scale wind power equipment according to claim 5, characterized in that: A bottom flange (203) is provided above the upper anchor plate (202). An anchor bolt (6) passes through the high-strength grout (201), the upper anchor plate (202) and the bottom flange (203). A first nut (601) is provided around the anchor bolt (6). The first nut (601) is threadedly connected to the anchor bolt (6). The first nut (601) is located above the bottom flange (203).
7. The support device for onshore large-scale wind power equipment according to claim 1, characterized in that: The outer perimeter of the first foundation (3) and the outer perimeter of the second foundation (4) are both provided with anti-corrosion layers (5).