Foundation anchor bolt assembly of wind driven generator

Abstract

The utility model belongs to the technical field of fan foundations in construction projects, and particularly relates to a foundation anchor bolt assembly of a wind driven generator. The upper end face of a positioning anchor bolt is flush with the upper end face of a common anchor bolt, a detachable guide sleeve is coaxially arranged at the top end of the positioning anchor bolt in a threaded connection mode, the outer diameter of the guide sleeve is matched with the inner diameter of an upper installation hole, and the top end of the guide sleeve is higher than the top end of the positioning anchor bolt. In the implementation process, the guide sleeve is arranged at the top end of the positioning anchor bolt, the upper anchor plate can be conveniently installed in place, the guide sleeve is assembled through threads of the positioning anchor bolt, the structure is simple, and implementation is easy. After the upper anchor plate is installed, the guide sleeve can be directly screwed out through the threaded connection structure, the original structure of the anchor bolt is not affected, at the moment, the upper end face of the positioning anchor bolt is flush with the upper end face of a common anchor bolt, the exposed lengths of all the anchor bolts are consistent, and the anchor bolts are convenient to stretch and draw.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind turbine foundations in construction projects, and in particular relates to a wind turbine foundation anchor bolt assembly. Background Art

[0002] Wind turbine anchor foundation has been widely used in various types of wind turbine foundation design in recent years due to its good stress characteristics, durability and good fatigue load resistance. The foundation anchor assembly is also called anchor cage, including bottom adjustment bolts, upper anchor plate, lower anchor plate, anchor rod, PVC sheath and nut. The typical structure can be found in the patent document with announcement number CN213539043U, which includes an upper anchor plate, including a pair of upper anchor plate segments and an upper mounting hole arranged on the upper anchor plate segments; a lower anchor plate, including a pair of lower anchor plate segments and a lower mounting hole arranged on the lower anchor plate segments; including positioning anchor bolts and ordinary anchor bolts, multiple positioning anchor bolts are evenly arranged between the upper anchor plate and the lower anchor plate, and multiple ordinary anchor bolts are arranged between the upper anchor plate and the lower anchor plate; a long protective sleeve is sleeved on the positioning anchor bolts and the ordinary anchor bolts, and the long protective sleeve is located between the upper anchor plate and the lower anchor plate; wherein the upper anchor plate and the lower anchor plate are in a ring shape, lower nuts are provided on both sides of the lower mounting hole, an upper nut is provided at the upper end of the upper mounting hole, a nylon nut is provided at the lower end of the upper mounting hole, the upper nut is connected to the upper end of the anchor assembly, and the nylon nut is provided at the upper end of the positioning anchor bolt.

[0003] In order to facilitate the tensioning of anchor bolts, the exposed lengths of positioning anchor bolts and ordinary anchor bolts relative to the upper anchor plate are usually designed to be the same, which can be directly seen from the drawings in the specification of the above patent document. The disadvantage of such a design is that it is not convenient for the installation of the upper anchor plate. In order to make the upper anchor plate more convenient to install, some manufacturers design the positioning anchor bolts to be longer. However, when the anchor bolts are tensioned, the exposed lengths of the positioning anchor bolts and ordinary anchor bolts relative to the upper anchor plate are inconsistent, making it difficult for the hydraulic tensioner to match the two tensioning strokes at the same time. The conventional operation is to add pads to offset the length inconsistency, which increases the difficulty of the anchor tensioning process and increases the tensioning time of the anchor bolts. At the same time, it is very easy to cause measurement errors and construction safety risks. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wind turbine foundation anchor bolt assembly which is convenient for anchor bolt tensioning and upper anchor plate installation.

[0005] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a wind turbine foundation anchor bolt assembly, comprising an upper anchor plate, a lower anchor plate, a positioning anchor bolt and a common anchor bolt, the upper anchor plate having a plurality of upper mounting holes, the lower anchor plate being coaxially arranged below the upper anchor plate, and the lower anchor plate having a lower mounting hole corresponding to the upper mounting holes one by one; a plurality of positioning anchor bolts are arranged between the upper anchor plate and the lower anchor plate, the upper end of the positioning anchor bolt passes through the upper mounting hole, the lower end of the positioning anchor bolt passes through the lower mounting hole, the positioning anchor bolt is threadedly connected with a nut 1, a nylon nut, a nut 2 and a nut 3 in sequence from top to bottom, a plurality of common anchor bolts are arranged between the upper anchor plate and the lower anchor plate avoiding the positioning anchor bolt, the upper end of the common anchor bolt passes through the upper mounting hole The hole is formed in the upper and lower parts of the upper and lower parts of the ordinary anchor bolt, and the lower end of the ordinary anchor bolt passes through the lower mounting hole; the ordinary anchor bolt is threadedly connected with nut one, nut two and nut three in sequence from top to bottom, nut one is arranged on the upper surface of the upper anchor plate, nylon nuts are arranged on the lower surface of the upper anchor plate, nut two is arranged on the upper surface of the lower anchor plate, and nut three is arranged on the lower surface of the lower anchor plate; the upper anchor plate is connected and positioned by the cooperation of nut one and nylon nut, and the lower anchor plate is connected and positioned by the cooperation of nut two and nut three; the upper end surfaces of the positioning anchor bolt and the ordinary anchor bolt are flush, and a detachable guide sleeve is coaxially arranged at the top end of the positioning anchor bolt in threaded connection; the outer diameter of the guide sleeve matches the inner diameter of the upper mounting hole, and the top end of the guide sleeve is higher than the top end of the positioning anchor bolt.

[0006] A further preferred solution is that the outer edge of the top end surface of the guide sleeve has an annular guide slope or an annular guide arc surface.

[0007] A further preferred solution is that a support is provided below the lower anchor plate, a vertically arranged adjusting bolt is provided on the support, the lower anchor plate has an adjusting positioning hole for the adjusting bolt to pass through, and the adjusting bolt is threadedly provided with adjusting nuts on both sides of the adjusting positioning hole.

[0008] A further preferred scheme is: the outer periphery of the positioning anchor bolt and the outer periphery of the ordinary anchor bolt are respectively sleeved with a long protective sleeve located between the upper anchor plate and the lower anchor plate; the lower end surface of the nylon nut is provided with a short heat shrink tube 1, and a set of short heat shrink tubes is arranged on the upper end outer periphery of the corresponding long protective sleeve; the lower surface of the nut of the ordinary anchor bolt is provided with a short heat shrink tube 2, and the short heat shrink tube 2 is sleeved on the upper end outer periphery of the corresponding long protective sleeve; the upper surface of the nut 2 is provided with a short heat shrink tube 3, and the short heat shrink tube 3 is sleeved on the lower end outer periphery of the corresponding long protective sleeve.

[0009] A further preferred solution is: a washer 1 is provided on a lower surface of the nut, and a short heat shrink tube 2 is arranged on the lower surface of the washer 1; and a washer 2 is provided on an upper surface of the nut 3.

[0010] Compared with the prior art, the utility model has the following beneficial effects: during implementation, a guide sleeve is provided at the top of the positioning anchor bolt, which can facilitate the installation of the upper anchor plate, and the guide sleeve is assembled using the thread of the positioning anchor bolt, which has a simple structure and is easy to implement. After the upper anchor plate is installed, the guide sleeve can be directly screwed out using the threaded connection structure without affecting the original structure of the anchor bolt. At this time, the upper end surface of the positioning anchor bolt is flush with that of the ordinary anchor bolt, and the exposed length of all anchor bolts is consistent, which makes it more convenient to tension the anchor bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 This is a schematic diagram of the upper end structure of the positioning anchor bolt of the utility model.

[0013] Figure 3 It is a schematic diagram of the upper end structure of a common anchor bolt of the utility model.

[0014] Figure 4 This is a schematic diagram of the lower end structure of all anchor bolts of the utility model.

[0015] Numbers in the figure: upper anchor plate 1, lower anchor plate 2, positioning anchor bolt 3, ordinary anchor bolt 4, washer one 5, washer two 6, nut one 7, nylon nut 8, nut two 9, nut three 10, guide sleeve 11, support 12, adjusting bolt 13, adjusting nut 14, short heat shrink tube one 15, short heat shrink tube two 16, short heat shrink tube three 17, long protective sleeve 18. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figures 1 to 4The utility model comprises an upper anchor plate 1, a lower anchor plate 2, a positioning anchor bolt 3 and an ordinary anchor bolt 4. The upper anchor plate 1 has a plurality of upper mounting holes, the lower anchor plate 2 is coaxially arranged below the upper anchor plate 1, and the lower anchor plate 2 has a lower mounting hole corresponding to the upper mounting hole one by one; a plurality of positioning anchor bolts 3 are arranged between the upper anchor plate 1 and the lower anchor plate 2, the upper end of the positioning anchor bolt 3 passes through the upper mounting hole, and the lower end of the positioning anchor bolt 3 passes through the lower mounting hole, and the positioning anchor bolt 3 is threadedly connected from top to bottom with a nut 7, a nylon nut 8, a nut two 9 and a nut three 10, and a plurality of ordinary anchor bolts 4 are arranged between the upper anchor plate 1 and the lower anchor plate 2 avoiding the positioning anchor bolt 3, the upper end of the ordinary anchor bolt 4 passes through the upper mounting hole, and the lower end of the ordinary anchor bolt 4 passes through the lower mounting hole; the ordinary anchor bolt 4 is threadedly connected from top to bottom with a nut 7, a nut two 9 and a nut three 10, and the nut 7 is arranged on the upper surface of the upper anchor plate 1 (in specific implementation, on the anchor bolt foundation Before pouring concrete, nut 1 7 may not be installed. After the concrete pouring is completed, the lower flange of the first tower section is installed on the upper surface of the upper anchor plate 1. Nut 7 is used to lock and fix the lower flange of the first tower section. Nylon nuts 8 are all arranged on the lower surface of the upper anchor plate 1, nut 2 9 are all arranged on the upper surface of the lower anchor plate 2, and nut 3 10 are all arranged on the lower surface of the lower anchor plate 2. The upper anchor plate 1 is connected and positioned by the cooperation of nut 1 7 and nylon nut 8, and the lower anchor plate 2 is connected and positioned by the cooperation of nut 2 9 and nut 3 10. The upper end surfaces of the positioning anchor bolt 3 and the ordinary anchor bolt 4 are flush, and a detachable guide sleeve 11 is coaxially arranged on the top of the positioning anchor bolt 3 with a threaded connection. The outer diameter of the guide sleeve 11 matches the inner diameter of the upper mounting hole, which is equivalent to that the guide sleeve 11 can pass through the upper mounting hole, thereby guiding the installation of the upper anchor plate 1, and the top of the guide sleeve 11 is higher than the top of the positioning anchor bolt 3. The upper anchor plate 1 and the lower anchor plate 2 can be made of a whole ring or a semi-ring structure, and then fixed into a whole by connecting parts.

[0018] When the utility model is implemented, since the top of the positioning anchor bolt 3 is provided with a guide sleeve 11, the upper anchor plate 1 can be easily installed in place, and the guide sleeve 11 is assembled using the thread of the positioning anchor bolt 3, the structure is simple and easy to implement. After the upper anchor plate 1 is installed, the guide sleeve 11 can be directly screwed out using the threaded connection structure without affecting the original structure of the anchor bolt. At this time, the upper end surface of the positioning anchor bolt 3 and the ordinary anchor bolt 4 are flush, the exposed length of all anchor bolts is consistent, and the anchor bolt tensioning is also relatively convenient.

[0019] In order to better guide the guide sleeve 11, the outer edge of the top end surface has an annular guiding slope or an annular guiding arc surface.

[0020] In order to facilitate the installation of the lower anchor plate, a support member 12 is provided below the lower anchor plate 2, and a vertically arranged adjusting bolt 13 is provided on the support member 12. The lower anchor plate 2 has an adjusting positioning hole for the adjusting bolt 13 to pass through, and the adjusting bolt 13 is provided with an adjusting nut 14 on both sides of the adjusting positioning hole in a threaded connection. In specific implementation, the support member 12 is generally pre-buried in the foundation cushion layer, and the adjusting bolt 13 is used to preliminarily determine the installation position of the lower anchor plate 2, so as to penetrate the positioning anchor bolt 3 and the ordinary anchor bolt 4 in the next step. The lower end of the adjusting bolt 13 is generally welded and fixed to the support member 12.

[0021] In order to better protect the anchor bolts, the outer peripheries of the positioning anchor bolts 3 and the ordinary anchor bolts 4 are respectively sleeved with long protective sleeves 18 located between the upper anchor plate 1 and the lower anchor plate 2. The lower end surface of the nylon nut 8 is provided with a short heat shrink tube 15, which is sleeved on the upper outer periphery of the corresponding long protective sleeve 18. The lower surface of the nut 17 of the ordinary anchor bolt 4 is provided with a short heat shrink tube 2 16, which is sleeved on the upper outer periphery of the corresponding long protective sleeve 18. The upper surface of the nut 2 9 is provided with a short heat shrink tube 3 17, which is sleeved on the lower outer periphery of the corresponding long protective sleeve 18. In specific implementation, a washer 1 5 can usually be added to the lower surface of the nut 1 7. At this time, for the short heat shrink tube 2 16 of the ordinary anchor bolt 4, the short heat shrink tube 2 16 is set at the lower surface of the washer 1 5. In addition, a washer 2 6 can usually be added to the upper surface of the nut 3 10.

Claims

1. A wind turbine foundation anchor bolt assembly, comprising an upper anchor plate (1), a lower anchor plate (2), a positioning anchor bolt (3) and a common anchor bolt (4), wherein the upper anchor plate (1) has a plurality of upper mounting holes, the lower anchor plate (2) is coaxially arranged below the upper anchor plate (1), and the lower anchor plate (2) has lower mounting holes corresponding to the upper mounting holes one by one; a plurality of positioning anchor bolts (3) are arranged between the upper anchor plate (1) and the lower anchor plate (2), the upper end of the positioning anchor bolt (3) passes through the upper mounting hole, and the lower end of the positioning anchor bolt (3) passes through the lower mounting hole, the positioning anchor bolt (3) is provided with a nut (7), a nylon nut (8), a nut (9) and a nut (10) in a threaded connection from top to bottom in sequence, and a plurality of common anchor bolts (4) are arranged between the upper anchor plate (1) and the lower anchor plate (2) avoiding the positioning anchor bolt (3). The upper end of the common anchor bolt (4) passes through the upper mounting hole, and the lower end of the common anchor bolt (4) passes through the lower mounting hole; the common anchor bolt (4) is provided with a nut (7), a nut (9) and a nut (10) which are threadedly connected in sequence from top to bottom, the nut (7) is arranged on the upper surface of the upper anchor plate (1), the nylon nut (8) is arranged on the lower surface of the upper anchor plate (1), the nut (9) is arranged on the upper surface of the lower anchor plate (2), and the nut (10) is arranged on the lower surface of the lower anchor plate (2); the upper anchor plate (1) is connected and positioned by the cooperation of the nut (7) and the nylon nut (8), and the lower anchor plate (2) is connected and positioned by the cooperation of the nut (9) and the nut (10); the upper end surface of the positioning anchor bolt (3) and the common anchor bolt (4) are flush, and the invention is characterized in that: A detachable guide sleeve (11) is coaxially arranged in a threaded connection at the top end of the positioning anchor bolt (3); the outer diameter of the guide sleeve (11) matches the inner diameter of the upper mounting hole; and the top end of the guide sleeve (11) is higher than the top end of the positioning anchor bolt (3).

2. The wind turbine foundation anchor assembly according to claim 1, characterized in that: The outer edge of the top end surface of the guide sleeve (11) has an annular guide inclined surface or an annular guide cambered surface.

3. The wind turbine foundation anchor assembly according to claim 1, characterized in that: A support member (12) is provided below the lower anchor plate (2), and a vertically arranged adjustment bolt (13) is provided on the support member (12). The lower anchor plate (2) has an adjustment positioning hole for the adjustment bolt (13) to pass through, and the adjustment bolt (13) is provided with adjustment nuts (14) on both sides of the adjustment positioning hole in a threaded manner.

4. The wind turbine foundation anchor assembly according to any one of claims 1 to 3, characterized in that: The outer periphery of the positioning anchor bolt (3) and the outer periphery of the common anchor bolt (4) are respectively sleeved with a long protective sleeve (18) located between the upper anchor plate (1) and the lower anchor plate (2); the lower end surface of the nylon nut (8) is provided with a short heat shrink tube (15), which is sleeved on the upper outer periphery of the corresponding long protective sleeve (18); the lower surface of the nut (7) of the common anchor bolt (4) is provided with a short heat shrink tube (16), which is sleeved on the upper outer periphery of the corresponding long protective sleeve (18); the upper surface of the nut (9) is provided with a short heat shrink tube (17), which is sleeved on the lower outer periphery of the corresponding long protective sleeve (18).

5. The wind turbine foundation anchor assembly according to claim 4, characterized in that: A washer 1 (5) is provided on the lower surface of nut 1 (7), and a short heat shrink tube 2 (16) is arranged on the lower surface of washer 1 (5); and a washer 2 (6) is provided on the upper surface of nut 3 (10).

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