Stud bolt fastener for wind power

Abstract

The utility model discloses a double-end bolt fastener for wind power, which comprises a screw rod body, the screw rod body is formed by splicing two same half screw rods, the interiors of the half screw rods are both provided with accommodating cavity grooves, the interiors of the accommodating cavity grooves are detachably provided with axle center units, and the axle center units are connected with the axle center units. A movable cavity groove facilitating disassembly of the axis unit is further formed in the edge of the containing cavity groove. The telescopic supporting piece is simple in structure and reasonable in design, by arranging the axis unit, when the bolt breaks down and breaks down, an operator can easily enter the gap between the first rod piece and the second rod piece through a tool, the telescopic supporting piece is clamped, and the bolt can be fixed conveniently. According to the design, the two half screw rods are allowed to be unfixed when the rod pieces are oppositely compressed to the positions of the movable cavity grooves, so that the disassembly process of the fractured bolt is simplified, and the fractured screw rods are taken out easily.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a stud bolt fastener used for wind power. Background Art

[0002] As a clean and renewable form of energy, wind power occupies an increasingly important position in the global energy structure. The development of wind power technology aims to improve energy efficiency and reduce environmental impact. The structural safety and reliability of wind turbines are one of the key factors to ensure the efficient operation of wind farms. Among the many components of wind turbines, stud bolts are key connection components, and their performance directly affects the stability and maintenance cost of the entire device. Due to their unique structural design, stud bolts can be fixed and connected at both ends at the same time. They are widely used in key parts such as tower connection and blade installation to ensure close connection between components and uniform force transmission.

[0003] However, although stud bolts play an irreplaceable role in the field of wind power, there are also some technical challenges in practical applications. Especially when wind turbines face complex and changeable natural environments for a long time, bolts may break due to fatigue, corrosion or overload. Once this happens, the existing stud bolt design makes it extremely difficult to remove them after they break. Specifically, since the two ends of the stud bolts are usually deeply buried in the connector, when the middle part breaks, the remaining bolt part is often difficult to effectively grasp and remove with conventional tools. This not only increases the complexity of maintenance, but also significantly prolongs the downtime of wind turbines, thereby affecting the overall operating efficiency and economy of the wind farm. Utility Model Content

[0004] The purpose of the utility model is to provide a stud bolt fastener for wind power generation to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stud bolt fastener for wind power, comprising a screw body, the screw body is formed by splicing two identical half screws, each half screw is provided with a receiving cavity inside, an axial unit is detachably provided inside the receiving cavity, and a movable cavity is also provided on the edge of the receiving cavity for easy removal of the axial unit;

[0006] The axis unit comprises:

[0007] A first rod, the first rod is arranged inside the accommodating cavity, a second rod is arranged on the opposite side of the first rod, the first rod and the second rod are used to prop open the half screw rods and make them have a certain gap distance;

[0008] A retractable support member is disposed between the first rod and the second rod, and is used to spread the first rod and the second rod apart.

[0009] Preferably, the retractable support member comprises:

[0010] an upper spring member, the upper spring member being disposed at an upper portion between the first rod member and the second rod member;

[0011] A lower spring member is disposed at a lower portion between the first rod member and the second rod member.

[0012] Preferably, the half screw is made of high-strength corrosion-resistant alloy.

[0013] Preferably, spring positioning portions are disposed on inner sides of the first rod and the second rod.

[0014] Preferably, one end of the half screw is provided with an opening portion, and the other end of the half screw is provided with a closed portion.

[0015] Preferably, the gap distance between the first rod and the second rod is 0.5-2 cm.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The double-headed bolt fastener for wind power is provided with an axial unit, so that when a bolt fails and breaks, an operator can easily intervene in the gap between the first rod and the second rod by means of a tool to clamp the retractable support member. This design allows the two half screws to be released when the rods are compressed toward each other to the position of the movable cavity, thereby simplifying the disassembly process of the broken bolt and making it easy to remove the screw after it breaks. In addition, by respectively providing an upper spring member and a lower spring member between the first rod and the second rod, not only the stability of the overall structure is enhanced, but also the accurate position of the rod in any operating state is ensured, thereby avoiding operational difficulties and potential safety risks caused by misalignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the half screw of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the shaft unit of the utility model installed in the accommodating cavity groove;

[0021] Figure 4 This is a schematic diagram of the opening structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the closed portion structure of the utility model;

[0023] Figure 6 It is a schematic diagram of the opening structure of the utility model when the spring member is pressed.

[0024] In the figure: 1. screw body; 2. half screw; 3. accommodating cavity; 4. axial unit; 401. first rod; 402. second rod; 403. retractable support member; 4031. upper spring member; 4032. lower spring member; 5. movable cavity; 6. spring positioning part; 7. opening part; 8. closing part. DETAILED DESCRIPTION

[0025] 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.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined. Example

[0029] See also Figure 1-6As shown, the utility model provides a technical solution of a stud bolt fastener for wind power: a stud bolt fastener for wind power, comprising a screw body 1, the screw body 1 is formed by splicing two identical half screws 2, the half screws 2 are each provided with a receiving cavity 3 inside, an axial unit 4 is detachably installed inside the receiving cavity 3, and a movable cavity 5 is also provided on the edge of the receiving cavity 3 for easy removal of the axial unit 4;

[0030] The axis unit 4 includes a first rod 401 and a retractable support member 403. The first rod 401 is arranged inside the accommodating cavity groove 3. The second rod 402 is arranged on the opposite side of the first rod 401. The first rod 401 and the second rod 402 are used to prop open the half-body screw 2 and make it have a certain gap distance. The retractable support member 403 is installed between the first rod 401 and the second rod 402. The retractable support member 403 is used to prop open the first rod 401 and the second rod 402. When installing the screw body 1, the installer needs to install the retractable support member 403 between the first rod 401 and the second rod 402 and fix the position, and then insert it The accommodating cavity 3 of one of the half screw rods 2 can be covered with the other half screw rod 2. When connecting the screw rods, the middle rod body part needs to be fixed, and then one end is connected to a driving tool (such as a torque wrench or pneumatic or electric tool, etc.), and the other end is aligned with the mounting hole for installation. After the bolt breaks, the installer needs to use an operating tool (such as needle-nosed pliers) to reach into the gap between the first rod member 401 and the second rod member 402, clamp the retractable support member 403, so that the two rod members are in a movable state, and then compress them toward each other to the position of the movable cavity 5 and take them out. At this time, the two half screw rods 2 will also lose their restrictions and can be directly knocked out.

[0031] The retractable support member 403 includes an upper spring member 4031 and a lower spring member 4032. The upper spring member 4031 is set in the upper part between the first rod member 401 and the second rod member 402, and the lower spring member 4032 is set in the lower part between the first rod member 401 and the second rod member 402. This design can generate uniform outward thrust on the upper and lower ends of the two rods respectively, so that the outer wall of the rod fits on the inner wall of the accommodating cavity groove 3 without changing its position, which is beneficial to the installation of the bolt body and also beneficial to the structural stability after the components are connected.

[0032] The half screw 2 is made of a high-strength corrosion-resistant alloy (such as a specific type of stainless steel or a nickel-based alloy). This design ensures that the bolt can maintain a better mechanical load bearing capacity and better resistance to chemical corrosion under changing climate and harsh environmental conditions.

[0033] The inner sides of the first rod 401 and the second rod 402 are both provided with spring positioning parts 6. The setting of the spring positioning parts 6 can accurately limit the position of the spring in the rod, ensure that the spring maintains the correct position during and after the installation process, and avoid connection failure caused by misalignment of the spring and the rod.

[0034] An opening portion 7 is provided at one end of the half screw 2, and a closed portion 8 is provided at the other end of the half screw 2. The establishment of the opening portion 7 allows the operator to directly check whether the activity condition of the internal retractable support 403 is reliable. In addition, the existence of the opening portion 7 and the closed portion 8 also makes it convenient to distinguish the end portion of the half screw 2 during the installation process.

[0035] The gap distance between the first rod 401 and the second rod 402 is 0.5-2 cm. The specific spacing of this design ensures that in the event of a bolt breakage, the operator can use an operating tool, such as needle-nosed pliers, to effectively clamp and operate the internal retractable support member 403.

[0036] The working principle of the utility model is as follows:

[0037] When installing a double-headed bolt fastener for wind power in the present embodiment, the installer first installs the retractable support member 403 between the first rod member 401 and the second rod member 402, and ensures that it is fixed in the correct position, and then inserts this assembly into the accommodating cavity groove 3 of one half screw rod 2, and covers the other half screw rod 2 to complete the assembly. In the screw connection operation, the operator needs to fix the middle rod body part, and then connect one end to the driving tool and align the other end with the mounting hole to perform the installation action. When the bolt is broken and needs to be removed, the installer can insert the operating tool into the gap between the first rod member 401 and the second rod member 402 to clamp the retractable support member 403. By operating the retractable support member 403, the two rod members can be moved toward each other to the position of the movable cavity groove 5 and removed. After this process, the connection restriction of the two half screw rods 2 is released, which is convenient for disassembly and replacement.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A stud bolt fastener for wind power generation, comprising a screw body (1), characterized in that: The screw body (1) is formed by splicing two identical half screws (2), each half screw (2) is provided with a receiving cavity (3), a shaft unit (4) is detachably provided inside the receiving cavity (3), and a movable cavity (5) is also provided at the edge of the receiving cavity (3) for facilitating the removal of the shaft unit (4); The axis unit (4) comprises: A first rod (401), the first rod (401) being arranged inside the accommodating cavity (3), a second rod (402) being arranged on an opposite side of the first rod (401), the first rod (401) and the second rod (402) being used to prop open the half screw rods (2) and to provide a certain gap distance therebetween; A retractable support member (403), wherein the retractable support member (403) is arranged between the first rod member (401) and the second rod member (402), and the retractable support member (403) is used to spread the first rod member (401) and the second rod member (402).

2. A stud bolt fastener for wind power according to claim 1, characterized in that: The retractable support member (403) comprises: an upper spring member (4031), the upper spring member (4031) being arranged at an upper portion between the first rod member (401) and the second rod member (402); A lower spring member (4032), wherein the lower spring member (4032) is arranged at a lower portion between the first rod member (401) and the second rod member (402).

3. A stud bolt fastener for wind power according to claim 1, characterized in that: The half screw (2) is made of a high-strength corrosion-resistant alloy.

4. A stud bolt fastener for wind power according to claim 1, characterized in that: A spring positioning portion (6) is provided on the inner sides of the first rod (401) and the second rod (402).

5. A stud bolt fastener for wind power according to claim 1, characterized in that: One end of the half screw (2) is provided with an opening portion (7), and the other end of the half screw (2) is provided with a closed portion (8).

6. A stud bolt fastener for wind power according to claim 1, characterized in that: The gap distance between the first rod (401) and the second rod (402) is 0.5-2 cm.

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