Detachable fan foundation secondary grouting formwork tool and installation method thereof

Abstract

The application discloses a detachable fan foundation secondary grouting formwork tool, which comprises a sleeve rod, a brake valve and a valve sleeve wall structure, an open mounting groove along the sleeve rod axis is arranged on the top surface of the sleeve rod, a gasket nut is fixedly connected to the top of the valve sleeve wall structure, the valve rod of the brake valve is inserted into the inside of the sleeve rod after penetrating through the gasket nut and the open mounting groove, the valve sleeve wall structure has four, including the inside structure-same valve sleeve wall A and valve sleeve wall B and the two-end structure-same valve formwork sleeve wall A and valve formwork sleeve wall B, anchor plate fixed vertical rods are fixedly connected to the bottoms of the valve sleeve wall A and the valve sleeve wall B, an anchor plate is fixedly connected between the two anchor plate fixed vertical rods, formwork fixed vertical rods are fixedly connected to the bottoms of the valve formwork sleeve wall A and the valve formwork sleeve wall B, a formwork mounting groove is arranged at the bottom of the formwork fixed vertical rod, and steel formworks are fixedly connected to the two formwork fixed vertical rods through the formwork mounting groove.

Description

Technical Field

[0001] This invention relates to the field of power engineering construction equipment technology, and in particular to a detachable secondary grouting formwork tool for wind turbine foundations and its installation method. Background Technology

[0002] The wind turbine foundation anchor plate, also known as the upper anchor plate of the prestressed anchor bolt assembly for wind turbine foundations, is a foundation ring used to connect the wind turbine tower and the foundation. Due to the height of wind turbines and the fact that the foundation bears 360° omnidirectional loads, the verticality requirements for the tower are extremely stringent. The prestressed anchor bolt assembly, with its superior precision and adjustability, is the most common connection method between the wind turbine tower and the foundation. After determining the elevation of the foundation anchor plate, high-strength grouting (referred to as secondary grouting) is applied to the foundation to meet the design requirements for fatigue resistance, density, and compressive strength of the wind turbine foundation.

[0003] During the secondary grouting process of the foundation ring, steel molds are usually used for on-site configuration of the molds, which are ring-shaped and difficult to control in terms of precision and stability. During the flow grouting, the molds are prone to deformation and the outflow of high-strength mortar, which can lead to voids in the lower cavity of the anchor plate after secondary grouting, resulting in poor molding quality and difficulty in achieving the required precision, thus affecting the subsequent wind turbine installation work. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by proposing a detachable secondary grouting formwork tool for wind turbine foundations and its installation method.

[0005] A detachable secondary grouting formwork tool for wind turbine foundations includes a sleeve rod, a brake valve, and a valve sleeve wall structure. An open mounting groove is provided on the top surface of the sleeve rod along its axis. A gasket nut is fixedly connected to the top of the valve sleeve wall structure. The valve stem of the brake valve passes through the gasket nut and the open mounting groove and is inserted into the sleeve rod. The valve stem is threadedly connected to the gasket nut. There are four valve sleeve wall structures: valve sleeve wall A and valve sleeve wall B with identical inner structures, and valve template sleeve wall A and valve template sleeve wall B with identical structures at both ends. Anchor plate fixing posts are fixedly connected to the bottom of valve sleeve wall A and valve sleeve wall B, with an anchor plate clamped between two anchor plate fixing posts. Template fixing posts are fixedly connected to the bottom of valve template sleeve wall A and valve template sleeve wall B, and steel templates are fixedly connected to the bottom of both template fixing posts.

[0006] Furthermore, the sleeve rod, brake valve, valve sleeve wall structure, anchor plate fixing pole, and template fixing pole are all rigid components.

[0007] Furthermore, a template mounting groove is provided at the bottom of the template fixing pole, and the steel template is fixedly connected to the template fixing pole through the template mounting groove.

[0008] Furthermore, a thrust washer is connected to the bottom of the valve stem.

[0009] A method for installing a detachable secondary grouting formwork tool for a wind turbine foundation, characterized by the following steps:

[0010] Step 1: First, install valve sleeve wall A and valve sleeve wall B onto the sleeve rod through the open mounting groove;

[0011] Step 2: Next, install valve template sleeve A and valve template sleeve B on the sleeve rod through the open installation slot. Valve template sleeve A and valve template sleeve B are located between valve template sleeve A and valve template sleeve B, forming a complete secondary grouting formwork tool.

[0012] Step 3: Loosen all the brake valves on the secondary grouting formwork tool, move valve sleeve A and valve sleeve B to both sides of the wind turbine foundation anchor plate, so that the anchor plate fixing rods at the bottom of valve sleeve A and valve sleeve B are close to the inner and outer diameter surfaces of the anchor plate, and then tighten the brake valves on valve sleeve A and valve sleeve B, and move the valve rod downward until the thrust washer is tightly engaged with the inner bottom surface of the sleeve rod.

[0013] Step 4: After completing Step 4, move Valve Template Wall A and Valve Template Wall B to the inner and outer steel templates according to the construction design requirements, and tighten the brake valves on Valve Template Wall A and Valve Template Wall B. Move the valve stem downward until the thrust washer is tightly engaged with the inner bottom surface of the sleeve.

[0014] Step 5: Securely connect the inner and outer steel templates to the template mounting grooves on the template fixing poles at the bottom of valve template sleeve A and valve template sleeve B.

[0015] The beneficial effects of this invention are:

[0016] 1. The sleeve rod has an open mounting slot that supports the installation, disassembly, and free movement of four brake valve sleeve structures. Its dimensions can be adjusted according to different construction site requirements, making it highly adaptable and suitable for industrial mass production. After use, it can be disassembled and reused, exhibiting excellent reusability.

[0017] 2. All components are made of steel, which is high in strength, not easily damaged or deformed, lightweight and detachable, simple and flexible to operate, improves work efficiency, and generates no waste. It solves the problem of easy deformation during the pouring process when using templates in the existing technology, which leads to poor molding quality in the secondary pouring cavity. The pouring is firm and reliable, effectively avoiding rework, and improving the foundation accuracy, fatigue resistance and reliability. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is an installation diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the valve sleeve structure of the present invention.

[0021] Example diagram: 1-Sleeve rod, 2-Open mounting groove, 3-Valve sleeve wall structure, 4-Brake valve, 5-Backing nut, 6-Valve stem, 7-Thrust washer, 8-Valve sleeve wall A, 9-Valve sleeve wall B, 10-Valve template sleeve wall A, 11-Valve template sleeve wall B, 12-Anchor plate fixing post, 13-Template fixing post, 14-Anchor plate, 15-Steel template, 16-Template mounting groove, 17-Thread. Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0023] Example 1

[0024] like Figure 1-3 As shown, this invention provides a detachable secondary grouting formwork tool for wind turbine foundations, including a sleeve rod 1, a brake valve 4, and a valve sleeve wall structure 3. An open mounting groove 2 is provided on the top surface of the sleeve rod 1 along its axis. A gasket nut 5 is fixedly connected to the top of the valve sleeve wall structure 3. The valve stem 6 of the brake valve 4 passes through the gasket nut 5 and the open mounting groove 2 and is inserted into the interior of the sleeve rod 1. The valve stem 6 is threadedly connected to the gasket nut 5. There are four valve sleeve wall structures 3, including valve sleeve walls A8 and B9 with identical structures on the inner side, and valve template sleeve walls A10 and B11 with identical structures at both ends. Anchor plate fixing rods 12 are fixedly connected to the bottom of valve sleeve walls A8 and B9, and an anchor plate 14 is clamped between two anchor plate fixing rods 12. Template fixing rods 13 are fixedly connected to the bottom of valve template sleeve walls A10 and B11, and steel templates 15 are fixedly connected to the bottom of two template fixing rods 13.

[0025] In this embodiment, the sleeve rod 1, the brake valve 4, the valve sleeve wall structure 3, the anchor plate fixing rod 12, and the template fixing rod 13 are all rigid components.

[0026] In this embodiment, a template mounting groove 16 is provided at the bottom of the template fixing pole 13, and the steel template 15 is fixedly connected to the template fixing pole 13 through the template mounting groove 16.

[0027] In this embodiment, a thrust washer 7 is connected to the bottom of the valve stem 6.

[0028] A method for installing a detachable secondary grouting formwork tool for a wind turbine foundation, characterized by the following steps:

[0029] Step 1: First, install valve sleeve wall A and valve sleeve wall B onto the sleeve rod through the open mounting groove;

[0030] Step 2: Next, install valve template sleeve A and valve template sleeve B on the sleeve rod through the open installation slot. Valve template sleeve A and valve template sleeve B are located between valve template sleeve A and valve template sleeve B, forming a complete secondary grouting formwork tool.

[0031] Step 3: Loosen all the brake valves on the secondary grouting formwork tool, move valve sleeve A and valve sleeve B to both sides of the wind turbine foundation anchor plate, so that the anchor plate fixing rods at the bottom of valve sleeve A and valve sleeve B are close to the inner and outer diameter surfaces of the anchor plate, and then tighten the brake valves on valve sleeve A and valve sleeve B, and move the valve rod downward until the thrust washer is tightly engaged with the inner bottom surface of the sleeve rod.

[0032] Step 4: After completing Step 4, move Valve Template Wall A and Valve Template Wall B to the inner and outer steel templates according to the construction design requirements, and tighten the brake valves on Valve Template Wall A and Valve Template Wall B. Move the valve stem downward until the thrust washer is tightly engaged with the inner bottom surface of the sleeve.

[0033] Step 5: Securely connect the inner and outer steel templates to the template mounting grooves on the template fixing poles at the bottom of valve template sleeve A and valve template sleeve B.

[0034] The beneficial effects of this invention are as follows: The sleeve rod has an open mounting groove that supports the installation, disassembly, and free movement of four brake valve sleeve structures. Its dimensions can be adjusted according to different construction site requirements, making it highly adaptable and suitable for industrial mass production. After use, it can be disassembled and reused, exhibiting strong reusability. All components are made of steel, offering high strength, resistance to damage and deformation, lightweight construction, and easy disassembly. Operation is simple and flexible, improving work efficiency and eliminating waste. This invention solves the problem of poor secondary casting quality caused by deformation during the casting process when using templates in existing technologies. The casting is firm and reliable, effectively avoiding rework and improving foundation accuracy, fatigue resistance, and reliability.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A detachable secondary grouting formwork tool for wind turbine foundations, characterized in that, The system includes a sleeve rod (1), a brake valve (4), and a valve sleeve wall structure (3). An open mounting groove (2) is provided on the top surface of the sleeve rod (1) along its axis. A gasket nut (5) is fixedly connected to the top of the valve sleeve wall structure (3). The valve stem (6) of the brake valve (4) passes through the gasket nut (5) and the open mounting groove (2) and is inserted into the interior of the sleeve rod (1). The valve stem (6) is threadedly connected to the gasket nut (5). There are four valve sleeve wall structures (3), including valve sleeve walls A (8) with identical inner structures. Valve sleeve wall B (9) and valve template sleeve wall A (10) and valve template sleeve wall B (11) with the same structure at both ends are fixedly connected to the bottom of valve sleeve wall A (8) and valve sleeve wall B (9). Anchor plate fixing rods (12) are clamped between the two anchor plate fixing rods (12). Template fixing rods (13) are fixedly connected to the bottom of valve template sleeve wall A (10) and valve template sleeve wall B (11). Steel templates (15) are fixedly connected to the bottom of the two template fixing rods (13). The sleeve rod (1), brake valve (4), valve sleeve wall structure (3), anchor plate fixing pole (12) and template fixing pole (13) are all rigid components; A template mounting groove (16) is provided at the bottom of the template fixing pole (13), and the steel template (15) is fixedly connected to the template fixing pole (13) through the template mounting groove (16); A thrust washer (7) is connected to the bottom of the valve stem (6).

2. A method for installing a detachable secondary grouting formwork tool for wind turbine foundations, based on the detachable secondary grouting formwork tool for wind turbine foundations as described in claim 1, characterized in that... Includes the following steps: Step 1: First, install valve sleeve wall A and valve sleeve wall B onto the sleeve rod through the open mounting groove; Step 2: Next, install valve template sleeve A and valve template sleeve B on the sleeve rod through the open installation slot. Valve template sleeve A and valve template sleeve B are located between valve template sleeve A and valve template sleeve B, forming a complete secondary grouting formwork tool. Step 3: Loosen all the brake valves on the secondary grouting formwork tool, move valve sleeve A and valve sleeve B to both sides of the wind turbine foundation anchor plate, so that the anchor plate fixing rods at the bottom of valve sleeve A and valve sleeve B are close to the inner and outer diameter surfaces of the anchor plate, and then tighten the brake valves on valve sleeve A and valve sleeve B, and move the valve rod downward until the thrust washer is tightly engaged with the inner bottom surface of the sleeve rod. Step 4: After completing Step 3, move Valve Template Wall A and Valve Template Wall B to the inner and outer steel templates according to the construction design requirements, and tighten the brake valves on Valve Template Wall A and Valve Template Wall B. Move the valve stem downward until the thrust washer is tightly engaged with the inner bottom surface of the sleeve. Step 5: Securely connect the inner and outer steel templates to the template mounting grooves on the template fixing poles at the bottom of valve template sleeve A and valve template sleeve B.

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