Fast-assembly type fan prefabricated foundation

Abstract

The utility model discloses a quick-assembly type fan prefabricated foundation, which relates to the technical field of foundations, and comprises a foundation I and a foundation II, the foundation I and the foundation II can be manufactured before field installation through prefabrication, so that the time for field pouring and maintenance is saved, and the efficiency is improved. The foundation calculated according to wind load and local soil conditions is divided into two blocks, so that the weight and the size of each block are reduced, and the transportation conditions are met. The first foundation and the second foundation are each provided with four lifting points used for lifting. The two foundations are each provided with two sets of embedded parts used for fixing the pressing lever bolts. The tower base is installed on the first foundation and the second foundation, and the tower base and the two foundations are connected and fixed into a whole through the pressing levers and the pressing lever bolts, so that the whole foundations are more stable, rapid installation of the foundations is achieved on site, and the installation time is greatly saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of foundation, especially to a quick-assembly type fan prefabricated foundation. BACKGROUND

[0002] A wind turbine is a clean energy device that converts wind energy into electricity. It is mainly composed of a wind wheel, a generator, a tower and a control system, etc. Among them, the wind wheel is the key component of capturing wind energy, usually composed of multiple blades and a hub, which can rotate with the wind and drive the generator to rotate. The generator converts the mechanical energy of the wind wheel into electrical energy, which is transmitted to the power grid through the cable for people to use. Wind turbines have the advantages of environmental protection, renewable resources, and abundant resources, and are one of the fastest growing renewable energy sources in the world today. With the continuous progress of technology and the reduction of cost, wind power plays an increasingly important role in the energy structure, and becomes one of the important means to promote global energy transformation and respond to climate change. Wind turbine foundation is an important infrastructure to ensure the stable and safe operation of wind turbine. It bears the weight of the entire wind turbine and needs to have enough strength and stability to resist wind load and other natural forces. The design and construction of wind turbine foundation need to fully consider geological conditions, soil bearing capacity, model and specification of wind turbine, wind speed and direction of wind field and other factors. Usually, the foundation will adopt deep foundation or shallow foundation and other forms to ensure that the wind turbine can stand firmly on the ground and effectively transfer and disperse the wind load to the foundation soil.

[0003] Prefabricated foundation is an important infrastructure in building engineering for supporting and fixing buildings. It produces high-strength and high-precision components such as prefabricated piles and prefabricated plates through factory prefabrication, and installs and connects them on site to form a stable foundation structure. The advantage of prefabricated foundation is that it can significantly improve the bearing capacity and stability of the foundation, reduce foundation settlement, speed up construction progress, ensure construction quality, and be beneficial to environmental protection and sustainable development. However, the existing prefabricated foundation is large in size, very difficult to transport, and requires a lot of manpower, material resources and time for on-site installation. SUMMARY

[0004] In view of the above technical problems, the utility model discloses a quick -mounting formula fan prefabricated foundation, including foundation one and foundation two, and the foundation split into two pieces according to the basis that wind load and local soil condition calculates, and foundation one and foundation two are prefabricated and are transported to the scene and are assembled into the complete foundation after being good. Through above -mentioned technical scheme, foundation one and foundation two can complete the production before the on -the -spot equipment installation through prefabrication, save the time of on -the -spot pouring and maintenance, improve the efficiency. Through the basis split into two pieces and assemble on the spot, the weight of each piece of the basis is smaller, and the transportation difficulty and transportation cost can be greatly reduced. Tower base is installed on foundation one and foundation two, and the tower base is connected on foundation one and foundation two through the lever and lever bolt, and the two foundations are connected and fixed as a whole. Through above -mentioned technical scheme, the embedded part steel sheet is firmly fixed on foundation one and foundation two by the embedded part grip, so that the T type head lever bolt passing through the embedded part steel sheet is fixed on the basis on one end, and the other end is fixed on the tower base through the lever and nut, at this moment, the tower base connects foundation one and foundation two as a whole and does not move relatively any more, so that the whole basis is more stable. Therefore, foundation one and foundation two only need to be connected and fastened through several groups of lever bolts on the spot, and quick assembly can be realized.

[0005] Further, the steel reinforcement layer and the stirrup net are laid in the foundation one and the foundation two, and the foundation one and the foundation two are formed by pouring concrete, so as to meet the strength requirement.

[0006] Further, the lifting points are arranged on the foundation one and the foundation two for hoisting.

[0007] Further, the lifting points are arranged on the foundation one and the foundation two for hoisting.

[0008] Further, the two groups of embedded part steel plates are respectively arranged on the foundation one and the foundation two, one group of which is rectangular and the other group of which is L-shaped.

[0009] Further, bolt hole grooves are formed in the middle positions of the embedded part steel plates for connecting the lever bolts.

[0010] Further, the embedded part steel plates are fixedly connected with the embedded part grip at the lower ends, so that the embedded part steel plates are firmly fixed in the foundation one and the foundation two.

[0011] Further, the bolt hole grooves are composed of narrow holes and wide holes, the lower ends of the lever bolts are T-shaped heads, the T-shaped heads enter the wide holes, slide to the corresponding positions of the narrow holes, rotate 90 degrees and then are clamped.

[0012] The utility model has the advantages that, compared with the prior art, the utility model has the advantages that:

[0013] (1) Through the technical scheme of the utility model, foundation one and foundation two are prefabricated, which can be completed before installation on site, saving the time for foundation site pouring and maintenance and greatly improving the efficiency. Through the split of the foundation into two parts for on-site assembly, the weight and size of each part of the foundation are reduced, and the transportation difficulty and cost are also greatly reduced.

[0014] (2) Through the technical scheme of the utility model, multiple lifting points are arranged to bind the lifting rope on the lifting ring, which is more convenient for lifting and on-site operation, and the lifting ring is located in the lifting ring counterbore without affecting the installation of the equipment above foundation one and foundation two.

[0015] (3) Through the technical scheme of the utility model, the embedded part steel plate is firmly fixed on foundation one and foundation two by the embedded part gripping rib, so that the T-shaped head compression lever bolt passing through the embedded part steel plate is fixed at one end of the foundation and fixed at the other end of the tower base through the compression lever and nut, at this time, the tower base connects and fixes foundation one and foundation two as a whole, so that the whole foundation is more stable. Therefore, foundation one and foundation two only need to be connected and fastened by several groups of compression lever bolts on site, which can realize rapid assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a top view of a quick-mounting type fan prefabricated foundation according to an embodiment of the utility model.

[0017] Figure 2 It is a reinforcement layout side view of a quick-mounting type fan prefabricated foundation according to an embodiment of the utility model.

[0018] Figure 3 It is a partial sectional view installation drawing of a quick-mounting type fan prefabricated foundation according to an embodiment of the utility model.

[0019] Figure 4 It is Figure 3 It is an enlarged view of A in the middle.

[0020] Figure 5 It is a three-dimensional schematic view of the compression lever bolt connection.

[0021] Reference signs: 1-steel reinforcement layer; 2-tie reinforcement; 3-foundation one; 4-foundation two; 5-lifting point; 6-tower base; 7-compression lever; 8-compression lever bolt; 9-embedded part steel plate; 10-bolt hole slot; 11-embedded part gripping rib; 12-lifting ring; 13-lifting ring counterbore. DETAILED DESCRIPTION

[0022] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0023] As shown in Figures 1-5 The quick-assembly type fan prefabricated foundation comprises foundation one 3 and foundation two 4, the foundation is divided into two parts according to the wind load and the local soil conditions, the foundation one 3 and the foundation two 4 are prefabricated in advance, and then are connected and fixed on the site to form a complete foundation. The foundation one 3 and the foundation two 4 are assembled together to be a symmetrical structure. According to the technical scheme, the foundation one 3 and the foundation two 4 are prefabricated, so that the manufacturing can be completed before the on-site installation, and the on-site pouring and maintenance are no longer needed, thereby improving the efficiency. Since the foundation is divided into two parts and assembled on the site, the weight and size of each part of the foundation are reduced, and the transportation difficulty and cost are also greatly reduced. The double-layer and double-direction steel bar layer 1 is laid in the foundation one 3 and the foundation two 4, the stirrup 2 is used to support the cross net to form a steel mesh, and the steel mesh is formed by pouring concrete to meet the strength requirement.

[0024] In the present embodiment, the lifting points 5 are arranged on the foundation one 3 and the foundation two 4 for lifting. Four lifting points 5 are arranged on the foundation one 3 and the foundation two 4, respectively, so that the foundation one 3 or the foundation two 4 can be safely and stably lifted.

[0025] In the present embodiment, the lifting point 5 adopts a U-shaped lifting ring 12, the lifting ring steel is embedded and poured in the foundation one 3 and the foundation two 4, and only the lifting ring part is exposed to meet the bearing strength. The lifting ring 12 falls in the lifting ring counterbore 13, and the height does not exceed the lifting ring counterbore 13. According to the technical scheme, the sling can be bound on the lifting ring 12, which can meet the lifting requirement and does not affect the installation of the equipment above the foundation.

[0026] In the embodiment, two groups of embedded steel plates 9 are arranged on the foundation 3 and the foundation 4 respectively, one group is rectangular and the other group is L-shaped. A bolt hole slot 10 is arranged in the middle of the embedded steel plate 9, which is used for connecting the pressing lever bolt 8. A pre-embedded steel plate 9 is fixedly installed with a pre-embedded steel plate 9, which is firmly fixed together when pouring the foundation 3 and the foundation 4. The upper end surface of the embedded steel plate 9 is flush with the upper end surface of the foundation 3 and the foundation 4. The position below the bolt hole slot 10 is provided with a bolt mounting reserved hole, which leaves a mounting space for the T-shaped head of the pressing lever bolt 8. The reserved hole and the lifting ring counterbore 14 are both provided with a drain pipe to prevent rainwater deposition. The bolt hole slot 10 is composed of a narrow hole and a wide hole to form a T-shaped hole slot. The lower T-shaped head of the pressing lever bolt 8 is rotated and clamped when the wide hole slides to the appropriate position of the narrow hole. The shape of the T-shaped hole slot can also make the installation of the pressing lever bolt 8 more rapid.

[0027] In the embodiment, the tower base 6 is installed on the foundation 3 and the foundation 4, and the pressing lever 7 is pressed on the tower base 6. Each group of pressing levers is connected by two groups of T-shaped head pressing lever bolts 8, one end of which is fixed to the embedded steel plate 9 of the foundation 3 and the foundation 4, and the other end is fixed to the pressing lever through a nut and a pressing plate, so as to connect the two foundations into a whole, so as to make the whole foundation more stable. Therefore, the foundation 3 and the foundation 4 only need to be connected and fastened by several groups of pressing lever bolts 8 on site, so as to realize rapid assembly.

[0028] The above embodiment only expresses one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A quick-installation prefabricated foundation for a wind turbine, characterized in that, Including Foundation 1 (3) and Foundation 2 (4), Foundation 1 (3) and Foundation 2 (4) are prefabricated and transported to the site for assembly; Tower base (6) is installed on Foundation 1 (3) and Foundation 2 (4) to connect the two foundations into a whole; Two sets of embedded steel plates (9) are respectively provided on the foundation one (3) and foundation two (4), one set being rectangular and the other being L-shaped; The embedded steel plate (9) has a bolt hole groove (10) in the middle position for the installation of the pressure bar bolt (8); The lower end of the embedded steel plate (9) is fixedly connected with several sets of embedded part catch bars (11). The embedded part catch bars (11) are embedded in the concrete of foundation one (3) and foundation two (4), thereby firmly fixing the embedded steel plate (9) to foundation one (3) and foundation two (4).

2. The quick-installation prefabricated foundation for a wind turbine according to claim 1, characterized in that, The foundations (3) and (4) are constructed with double-layered, bidirectional steel reinforcement (1), and the upper and lower steel reinforcement layers are supported by staggered stirrups (2) to form a steel reinforcement mesh, which is then poured with concrete.

3. The quick-installation prefabricated foundation for a wind turbine according to claim 1, characterized in that, Both foundation one (3) and foundation two (4) are equipped with lifting points (5) for hoisting.

4. The quick-installation prefabricated foundation for a wind turbine according to claim 3, characterized in that, The lifting points (5) are set in 4 sets on each base, and each set adopts the method of pre-embedded lifting rings (12), and the lifting rings (12) are placed in the lifting ring countersunk holes (13).

5. The quick-installation prefabricated foundation for a wind turbine according to claim 1, characterized in that, The bolt hole groove (10) consists of a narrow hole and a wide hole. The lower end of the pressure bar bolt (8) is a T-shaped head. When the T-shaped head enters from the wide hole and slides to the corresponding position of the narrow hole, it rotates 90 degrees and then engages.

6. The quick-installation prefabricated foundation for a wind turbine according to claim 1, characterized in that, The tower base (6) is installed on foundation one (3) and foundation two (4), and is pressed on the tower base (6) by pressure bars (7). Each set of pressure bars is fixed to foundation one (3) and foundation two (4) by two sets of T-head pressure bar bolts (8).

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