A protection mechanism for a foundation fixing bolt of a wind turbine tower

Abstract

The utility model discloses a kind of protection mechanism of wind generating set tower's ground foot fixing bolt, provide a kind of protection measure with low cost, high installation efficiency and good firmness for site;Screw sleeve connecting round hole is provided at the top end face central place of inverted nut sleeve (2), screw sleeve (3) is connected on screw sleeve connecting round hole, screw sleeve (3) and nut sleeve (2) form a closed stepped cylindrical sleeve body, the arc inner side wall of screw sleeve (3) is uniformly distributed with upwardly inclined barb (4), the closed stepped cylindrical sleeve body is sleeved on ground foot fixing bolt and nut, and the top end of inclined barb (4) is abutted on the external thread of ground foot fixing bolt;A large number of working hours are saved.

Description

Technical Field

[0001] This utility model relates to a wind turbine tower, and more particularly to a protective mechanism for the anchor bolts at the base of a wind turbine tower. Background Technology

[0002] Wind turbine towers are iron towers, which are fixed to the base by anchor bolts. Currently, the protection of anchor bolts mainly relies on multi-layer protective coatings or electrochemical protection, without adequately considering physical protection measures. Because wind turbine tower bolts are exposed to the elements for extended periods, they are severely corroded by harsh environmental conditions such as strong winds, heavy rain, lightning, and blizzards. To overcome these shortcomings, some wind turbine maintenance manufacturers have begun to install protective caps on the tower bolts. Existing protective caps generally use nuts with internal horizontal threads or internally protruding horizontal threads, requiring manual or electric tightening during installation. This results in high costs and a large workload, and there is also a defect that the protective caps may detach after installation. Summary of the Invention

[0003] This utility model provides a protective mechanism for the anchor bolts of a wind turbine tower, offering a low-cost, high-efficiency, and reliable protective measure for on-site installation.

[0004] This utility model solves the above technical problems through the following technical solution:

[0005] A protective mechanism for the anchor bolts of a wind turbine tower includes an inverted nut sleeve. A connecting hole for a screw sleeve is provided at the center of the top surface of the inverted nut sleeve. A screw sleeve is connected to the connecting hole. The screw sleeve and the nut sleeve form a closed, stepped cylindrical sleeve. Upwardly inclined barbs are evenly distributed on the arc-shaped inner sidewall of the screw sleeve. The closed, stepped cylindrical sleeve is fitted onto the anchor bolt and the nut. The tips of the inclined barbs abut against the external thread of the anchor bolt.

[0006] An outwardly protruding arc-shaped connecting cylinder is connected to the bottom end of the screw sleeve, and the lower end of the outwardly protruding arc-shaped connecting cylinder is connected to the connecting round hole of the screw sleeve; a second outwardly protruding arc-shaped connecting cylinder is connected to the lower end of the nut sleeve.

[0007] The beneficial effects of this utility model are as follows: (i) The protective cap is embedded into the bolt of the wind turbine tower base by means of the inclined barbs inside the screw sleeve. The internal embedded structure barbs make the barbs inside the protective cap abut against the thread on the bolt when subjected to an upward external force, thereby reducing the stress caused by strong winds and reducing the occurrence of the cap flying off; (ii) The screw sleeve and nut sleeve, as well as the bottom end of the nut sleeve and the ground are all set with arc-shaped transition connection surfaces, which reduces the erosion of the protective cap by rain and snow and extends the service life of the protective cap; (iii) The material of this utility model is recycled modified high-density polyethylene (rHDPE) or recycled polypropylene (rPP), which takes into account the three major factors of economy, lightness and environmental protection, reduces production costs and extends the service life. Without special anti-corrosion treatment, the service life can reach 5-8 years; (iv) The protective cap of this utility model does not need to be tightened. It can be directly pressed and installed on the anchor bolt, saving a lot of time. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0009] The present invention will now be described in detail with reference to the accompanying drawings:

[0010] A protective mechanism for the anchor bolts of a wind turbine tower includes an inverted nut sleeve 2, which is shaped like a cylindrical cup. A connecting hole for a screw sleeve is provided at the center of the top surface of the inverted nut sleeve 2. A screw sleeve 3 is connected to the connecting hole. The screw sleeve 3 and the nut sleeve 2 form a closed, stepped cylindrical sleeve. This shape is designed to correspond to the anchor bolts and connecting nuts on the tower base. The inner arc-shaped sidewall of the screw sleeve 3 is evenly distributed with upwardly inclined barbs 4. These barbs are similar to ratchet teeth, making it easy for the cylindrical sleeve to press down onto the anchor bolts, but difficult to pull it up from the anchor bolts. The closed, stepped cylindrical sleeve fits onto the anchor bolts and nuts. The top of the inclined barbs 4 abuts against the external thread of the anchor bolts. The inclined barbs 4 are made of plastic and have a certain degree of elasticity.

[0011] An outwardly protruding arc-shaped connecting cylinder is connected to the bottom end of the screw sleeve 3, and the lower end of the outwardly protruding arc-shaped connecting cylinder is connected to the connecting round hole of the screw sleeve; a second outwardly protruding arc-shaped connecting cylinder 1 is connected to the lower end of the nut sleeve 2. This structure is conducive to rainwater drainage.

Claims

1. A protective mechanism for the anchor bolts of a wind turbine tower, comprising an inverted nut sleeve (2), characterized in that, A screw sleeve connecting round hole is provided at the center of the top surface of the inverted nut sleeve (2). A screw sleeve (3) is connected to the screw sleeve connecting round hole. The screw sleeve (3) and the nut sleeve (2) form a closed cylindrical sleeve with steps. Upwardly inclined barbs (4) are evenly distributed on the arc-shaped inner sidewall of the screw sleeve (3). The closed cylindrical sleeve with steps is fitted onto the anchor bolt and nut. The top of the inclined barb (4) abuts against the external thread of the anchor bolt.

2. The protective mechanism for the anchor bolts of a wind turbine tower according to claim 1, characterized in that, An outwardly protruding arc-shaped connecting cylinder is connected to the bottom end of the screw sleeve (3), and the lower end of the outwardly protruding arc-shaped connecting cylinder is connected to the connecting round hole of the screw sleeve; a second outwardly protruding arc-shaped connecting cylinder (1) is connected to the lower end of the nut sleeve (2).

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