Reinforcement cage structure for pouring bottom platform of wind power tower drum

Abstract

The utility model discloses a reinforcement cage structure for pouring a bottom platform of a wind power tower, and belongs to the technical field of pouring structures of wind power towers. The cage comprises an annular outer cage frame, three groups of parallel transverse cage frames and five groups of longitudinal cage frames, the three groups of parallel transverse cage frames are arranged from front to back, and the five groups of longitudinal cage frames are distributed from right to left. The first longitudinal cage frame crosses the first and second transverse cage frames, and the middle part is crossed with the third transverse cage frame; the second longitudinal cage frame vertically penetrates through the three groups of transverse cage frames; the third longitudinal cage frame is connected with the second and third transverse cage frames; the fourth longitudinal cage frame and the fifth longitudinal cage frame extend from the outer cage frame and penetrate through the second transverse cage frame to the third transverse cage frame. And an additionally arranged fourth transverse cage frame is connected with the outer cage frame and penetrates through the first longitudinal cage frame to the second longitudinal cage frame. The first transverse cage frame is provided with two transverse lifting lugs, and the second transverse cage frame is provided with a longitudinal lifting lug at the intersection point of the second longitudinal cage frame and the fifth longitudinal cage frame; the utility model effectively solves the problem that the construction period is influenced because the reinforcement cage is easy to deform and needs to be repaired subsequently when the pre-buried reinforcement cage structure is transferred by using a crane at present.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine tower casting structure technology, specifically to a steel cage structure for casting the bottom platform of a wind turbine tower. Background Technology

[0002] When constructing wind turbine towers using an enlarged slab foundation structure, after pouring the base portion below the reference plane, a foundation structure located above the base also needs to be poured. Since electrical equipment to be installed inside the wind turbine tower needs to be placed on the foundation, sufficient space must be reserved for installation on the poured foundation. Because the foundation is also a reinforced concrete structure, a reinforcing cage needs to be laid in advance before pouring. Currently, most foundation reinforcing cages are tied on-site and then hoisted to the base for installation and fixation using cranes. However, workers have found that due to the presence of empty areas, the force applied to the surrounding cage structure by each lifting point is uneven during hoisting, making the reinforcing cage prone to deformation. This is the main problem that needs to be solved. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a steel cage structure for casting the bottom platform of a wind turbine tower, so as to solve the problem that the steel cage is prone to deformation when the pre-embedded steel cage structure is transferred by using a crane, and subsequent repair is required, which affects the construction period.

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] A steel cage structure for casting the bottom platform of a wind turbine tower; it includes an outer cage frame in the shape of a ring; a first horizontal cage frame, a second horizontal cage frame and a third horizontal cage frame are arranged sequentially from front to back on the inner side of the outer cage frame; the two ends of the first horizontal cage frame, the second horizontal cage frame and the third horizontal cage frame are all connected to the outer cage frame, and are arranged parallel to each other in pairs.

[0006] On the inner side of the outer cage frame, from right to left, there are a first longitudinal cage frame, a second longitudinal cage frame, a third longitudinal cage frame, a fourth longitudinal cage frame and a fifth longitudinal cage frame.

[0007] The first longitudinal cage frame is set between the first and second transverse cage frames, with its middle part intersecting perpendicularly with the third transverse cage frame, and its two sides connected to the outer cage frame.

[0008] The second longitudinal cage frame is perpendicularly intersecting the first, second, and third transverse cage frames, respectively, and is connected to the outer cage frame on both sides.

[0009] The two ends of the third longitudinal cage are vertically connected to the second and third transverse cages, respectively.

[0010] One end of the fourth and fifth longitudinal cage frames is connected to the outer cage frame, and the other end passes vertically through the second transverse cage frame and connects to the third transverse cage frame.

[0011] It also includes a fourth horizontal cage frame; the fourth horizontal cage frame is located between the first horizontal cage frame and the third horizontal cage frame; one end of the fourth horizontal cage frame is connected to the outer cage frame, and the other end passes vertically through the first longitudinal cage frame and is connected to the second longitudinal cage frame.

[0012] Two horizontal lifting lugs are provided on the first horizontal cage frame, one of which is located at the intersection of the first horizontal cage frame and the third horizontal cage frame;

[0013] Longitudinal lifting lugs are provided at the locations where the second horizontal cage intersects with the second and fifth vertical cages.

[0014] Preferably, the first and second horizontal cage frames are symmetrically distributed on the upper and lower sides of the outer cage frame; the third horizontal cage frame is located in the lower middle part of the outer cage frame.

[0015] Preferably, the corresponding centerlines on the second and fifth longitudinal cages are symmetrically distributed on the left and right sides of the outer cage.

[0016] Preferably, the horizontal and vertical lifting lugs have the same shape, each including a U-shaped lifting lug and two straight rods; wherein the two straight rods are on the same straight line, and the two straight rods are respectively set at the two protruding ends of the U-shaped lifting lug and extend outward from the U-shaped lifting lug; the straight rods are set in the inner cavity of the horizontal or vertical cage frame.

[0017] Furthermore, the two opposing straight rods on the two horizontal lugs are connected, making the two horizontal lugs form an integrated structure.

[0018] Preferably, the first, second, and third horizontal cages each have six reinforcing bars on their cross-sections; the fourth horizontal cage, the outer cage, and all the longitudinal cages each have four reinforcing bars on their cross-sections.

[0019] The beneficial effects of this utility model are reflected in the following aspects:

[0020] 1. By forming a spatial mesh structure through the outer cage frame and multiple layers of horizontal and vertical cage frames, and utilizing the cross-support design of the fourth horizontal cage frame and the vertical cage frame, the overall torsional stiffness of the cage body is significantly enhanced.

[0021] 2. A composite lifting lug system is set at the structural nodes. The horizontal and vertical lifting lugs work together to form a four-point balanced lifting system, which effectively avoids plastic deformation caused by local stress concentration.

[0022] 3. The area formed between the horizontal and vertical cage frames and the outer cage frame provides reliable installation space for the corresponding electrical equipment, eliminating the need for subsequent correction procedures. Attached Figure Description

[0023] Figure 1 This is a simplified schematic diagram of the structure of this utility model in an embodiment;

[0024] Figure 2 This is a schematic diagram of the horizontal lifting lug in this embodiment;

[0025] Explanation of reference numerals in the attached diagram: 1. Outer cage frame; 2. First horizontal cage frame; 3. Second horizontal cage frame; 4. Third horizontal cage frame; 5. First vertical cage frame; 6. Second vertical cage frame; 7. Third vertical cage frame; 8. Fourth vertical cage frame; 9. Fifth vertical cage frame; 10. Horizontal lifting lug; 11. Vertical lifting lug; 12. Fourth horizontal cage frame. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0027] Example:

[0028] Reference Figure 1 This embodiment provides a steel cage structure for casting the bottom platform of a wind turbine tower; it includes an outer cage frame 1 in the shape of a ring; a first horizontal cage frame 2, a second horizontal cage frame 3 and a third horizontal cage frame 4 are arranged sequentially from front to back on the inner side of the outer cage frame 1; both ends of the first horizontal cage frame 2, the second horizontal cage frame 3 and the third horizontal cage frame 4 are connected to the outer cage frame 1 and are arranged parallel to each other in pairs.

[0029] On the inner side of the outer cage frame 1, from right to left, there are a first longitudinal cage frame 5, a second longitudinal cage frame 6, a third longitudinal cage frame 7, a fourth longitudinal cage frame 8 and a fifth longitudinal cage frame 9.

[0030] The first longitudinal cage frame 5 is located between the first transverse cage frame 2 and the second transverse cage frame 3, with its middle part intersecting perpendicularly with the third transverse cage frame 4, and its two sides connected to the outer cage frame 1.

[0031] The second longitudinal cage 6 is perpendicularly intersecting the first transverse cage 2, the second transverse cage 3 and the third transverse cage 4 respectively, and is connected to the outer cage 1 on both sides.

[0032] The two ends of the third longitudinal cage 7 are vertically connected to the second transverse cage 3 and the third transverse cage 4, respectively.

[0033] One end of the fourth longitudinal cage frame 8 and the fifth longitudinal cage frame 9 is connected to the outer cage frame 1, and the other end passes vertically through the second transverse cage frame 3 and is connected to the third transverse cage frame 4.

[0034] It also includes a fourth horizontal cage frame 12; the fourth horizontal cage frame 12 is located between the first horizontal cage frame 2 and the third horizontal cage frame 4; one end of the fourth horizontal cage frame 12 is connected to the outer cage frame 1, and the other end passes vertically through the first longitudinal cage frame 5 and is connected to the second longitudinal cage frame 6.

[0035] Two horizontal lifting lugs 10 are provided on the first horizontal cage frame 2, one of which is located at the intersection of the first horizontal cage frame 2 and the third horizontal cage frame 4;

[0036] Longitudinal lifting lugs 11 are provided at the intersections of the second horizontal cage 3 with the second vertical cage 6 and the fifth vertical cage 9.

[0037] The first horizontal cage frame 2 and the second horizontal cage frame 3 are symmetrically distributed on the upper and lower sides of the outer cage frame 1; the third horizontal cage frame 4 is located in the lower middle part of the outer cage frame 1.

[0038] The corresponding centerlines on the second longitudinal cage 6 and the fifth longitudinal cage 9 are symmetrically distributed on the left and right sides of the outer cage 1.

[0039] The horizontal lifting lug 10 and the vertical lifting lug 11 have the same shape, each including a U-shaped lifting lug and two straight rods; the two straight rods are on the same straight line, and the two straight rods are respectively set at the two protruding ends of the U-shaped lifting lug and extend outward from the U-shaped lifting lug; the straight rods are set in the inner cavity of the horizontal cage or the vertical cage.

[0040] Two opposing straight rods on the two horizontal lugs 10 are connected, so that the two horizontal lugs 10 form an integral structure.

[0041] The first horizontal cage 2, the second horizontal cage 3, and the third horizontal cage 4 each have six reinforcing bars in their cross-sections; the fourth horizontal cage 12, the outer cage 1, and all the longitudinal cages each have four reinforcing bars in their cross-sections.

[0042] When using the utility model device in this embodiment, you only need to assemble it according to the steel cage structure in the figure first, and then weld and install other mesh steel bars accordingly.

Claims

1. A reinforced cage structure for casting the bottom platform of a wind turbine tower, comprising an annular outer cage frame (1); characterized in that: The first horizontal cage (2), the second horizontal cage (3) and the third horizontal cage (4) are arranged sequentially from front to back on the inner side of the outer cage (1); the two ends of the first horizontal cage (2), the second horizontal cage (3) and the third horizontal cage (4) are connected to the outer cage (1) and are arranged parallel to each other. The first longitudinal cage (5), the second longitudinal cage (6), the third longitudinal cage (7), the fourth longitudinal cage (8) and the fifth longitudinal cage (9) are arranged sequentially from right to left on the inner side of the outer cage (1). The first longitudinal cage (5) is set between the first transverse cage (2) and the second transverse cage (3), with its middle part intersecting perpendicularly with the third transverse cage (4), and its two sides connected to the outer cage (1); The second longitudinal cage (6) is perpendicularly intersecting the first transverse cage (2), the second transverse cage (3) and the third transverse cage (4) respectively, and is connected to the outer cage (1) on both sides; The two ends of the third longitudinal cage (7) are vertically connected to the second transverse cage (3) and the third transverse cage (4), respectively; One end of the fourth longitudinal cage (8) and the fifth longitudinal cage (9) is connected to the outer cage (1), and the other end passes vertically through the second transverse cage (3) and is connected to the third transverse cage (4); It also includes a fourth horizontal cage frame (12); the fourth horizontal cage frame (12) is located between the first horizontal cage frame (2) and the third horizontal cage frame (4); one end of the fourth horizontal cage frame (12) is connected to the outer cage frame (1), and the other end passes vertically through the first longitudinal cage frame (5) and is connected to the second longitudinal cage frame (6); Two horizontal lifting lugs (10) are provided on the first horizontal cage frame (2), one of which is located at the intersection of the first horizontal cage frame (2) and the third horizontal cage frame (4); Longitudinal lifting lugs (11) are provided at the positions where the second horizontal cage (3) intersects with the second vertical cage (6) and the fifth vertical cage (9).

2. The steel cage structure for casting the bottom platform of a wind turbine tower according to claim 1, characterized in that: The first horizontal cage frame (2) and the second horizontal cage frame (3) are symmetrically distributed on the upper and lower sides of the outer cage frame (1); the third horizontal cage frame (4) is located in the lower middle part of the outer cage frame (1).

3. The steel cage structure for casting the bottom platform of a wind turbine tower according to claim 1, characterized in that: The corresponding centerlines on the second longitudinal cage (6) and the fifth longitudinal cage (9) are symmetrically distributed on the left and right sides of the outer cage (1).

4. The steel cage structure for casting the bottom platform of a wind turbine tower according to claim 1, characterized in that: The horizontal lifting lug (10) and the vertical lifting lug (11) have the same shape, each including a U-shaped lifting lug and two straight rods; the two straight rods are on the same straight line, and the two straight rods are respectively set at the two protruding ends of the U-shaped lifting lug and extend to the outside of the U-shaped lifting lug; the straight rods are set in the inner cavity of the horizontal cage or the vertical cage.

5. The steel cage structure for casting the bottom platform of a wind turbine tower according to claim 4, characterized in that: Two opposing straight rods are connected on the two horizontal lugs (10), so that the two horizontal lugs (10) form an integral structure.

6. The steel cage structure for casting the bottom platform of a wind turbine tower according to claim 1, characterized in that: The first horizontal cage (2), the second horizontal cage (3) and the third horizontal cage (4) each have six column reinforcements on their cross-sections; the fourth horizontal cage (12), the outer cage (1) and all the longitudinal cages each have four column reinforcements on their cross-sections.

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