Novel bolt protective cap

Abstract

The utility model relates to the technical field of fastening component protection, in particular to a novel bolt protective cap. The novel bolt protective cap comprises a cap body, the cap body is provided with a containing cavity and an opening which are communicated with each other, a first installation groove is formed in the side, close to the opening, of the cap body, a sealing ring is installed in the first installation groove, a second installation groove is formed in one side of the first installation groove, and the sealing ring is installed in the second installation groove. And a magnet is mounted in the second mounting groove. The first mounting groove and the second mounting groove are formed in the opening of the cap body, the sealing ring and the magnet are mounted in the first mounting groove and the second mounting groove respectively, the magnet and the surface of the flange plate are magnetically attracted, and then the gap between the cap body and the surface of the flange plate is sealed through the sealing ring, so that the mounting mode is simple and convenient; and the magnetic attraction design prevents falling off, so that the bolt assembly is not prone to rusting.

Description

Technical Field

[0001] The utility model relates to the technical field of protection of fastening components, and particularly relates to a novel bolt protection cap. Background Art

[0002] Wind power generation or wind energy power generation belongs to renewable energy and clean energy. Wind power generation is an important form of wind energy utilization. Wind energy is an energy source that is renewable, pollution-free, has large energy, and broad prospects. Wind power technology equipment is an important part of the wind power industry and is also the foundation and guarantee for the development of the wind power industry.

[0003] The wind turbine tower barrel is one of the most commonly used and necessary equipment. It is connected to the base through external flange bolts, and bolts are used to connect between tower sections (some large-megawatt wind turbine models are divided into internal and external flange plates). After long-term use, the external flange bolt assembly will inevitably be eroded by harmful gases such as wind, rain, and fog, resulting in rust of a batch of bolt assemblies (bolts and nuts), which brings great problems to the safety, use, and maintenance of the wind turbine. Therefore, a protective cap is often installed on the bolt assembly to prevent the bolt assembly from rusting.

[0004] The existing protective cap includes a cap body. The cap body has a communicating receiving cavity and an opening. The receiving cavity is used to receive the bolt head. By clamping the cap body onto the bolt head, the bolt assembly is prevented from rusting. However, after a period of time, due to material aging and other reasons, the protective cap is likely to fall off, resulting in the problem that the bolt assembly will still rust. Summary of the Utility Model

[0005] (1) The problem to be solved by the utility model is: how to prevent the protection of the protective cap from weakening or falling off and prevent the bolt assembly from rusting.

[0006] (2) Technical Solution

[0007] A novel bolt protection cap provided by the utility model includes a cap body. The cap body has a communicating receiving cavity and an opening. A first installation groove is formed on one side of the cap body close to the opening. A sealing ring is installed in the first installation groove. A second installation groove is formed on one side of the first installation groove. A magnet is installed in the second installation groove.

[0008] According to an embodiment of the utility model, a plurality of the second installation grooves are arranged at intervals along the axial direction of the cap body, and one magnet is installed in each of the second installation grooves.

[0009] According to an embodiment of the utility model, the cap body is a plastic cap.

[0010] According to an embodiment of the present utility model, an iron shell is installed in the second installation groove, and the magnet is installed inside the iron shell.

[0011] According to an embodiment of the present utility model, the iron shell and the magnet are adhesively bonded with glue.

[0012] According to an embodiment of the present utility model, a groove is provided between every two adjacent second installation grooves.

[0013] According to an embodiment of the present utility model, the cap body includes an outer shell and a ring plate. The outer shell has the accommodation cavity for accommodating the bolt head, the ring plate is fixedly connected to the outer shell, and the ring plate has the opening.

[0014] According to an embodiment of the present utility model, a notch is provided on the ring plate.

[0015] According to an embodiment of the present utility model, a retaining ring is installed on the second installation groove. The inner diameter of the retaining ring is larger than the inner diameter of the iron shell and smaller than the outer diameter of the iron shell.

[0016] According to an embodiment of the present utility model, the length of the iron shell is the same as the depth of the second installation groove. A relief groove is provided on the iron shell, and the retaining ring is located in the relief groove.

[0017] Advantages of the present utility model:

[0018] By providing a first installation groove and a second installation groove at the opening of the cap body, and installing a sealing ring and a magnet in the first installation groove and the second installation groove respectively, the magnet is magnetically attracted to the surface of the flange, and then the gap between the cap body and the surface of the flange is sealed by the sealing ring. The installation method is simple, and the magnetic attraction design prevents falling off, so that the bolt assembly is not prone to rust problems. Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is the bottom view of the protective cap provided by the embodiment of the present utility model;

[0021] Figure 2 It is the cross-sectional view of the cap body provided by the embodiment of the present utility model;

[0022] Figure 3A three-dimensional cross-sectional view of the protective cap provided by the embodiment of the present utility model;

[0023] Figure 4 Provided by the embodiment of the present utility model Figure 3 An enlarged view of part A in

[0024] Icon: 1. Cap body; 101. Outer shell; 102. Ring plate; 103. First installation groove; 104. Second installation groove; 105. Notch; 106. Retaining ring; 2. Sealing ring; 3. Magnet; 4. Groove; 5. Iron shell. Specific embodiments

[0025] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0026] As Figures 1 - 4 shown, an embodiment of the present utility model provides a new type of bolt protective cap, including a cap body 1. The cap body 1 has a communicating accommodation cavity and an opening. A first installation groove 103 is provided on one side of the cap body 1 close to the opening. A sealing ring 2 is installed in the first installation groove 103. A second installation groove 104 is provided on one side of the first installation groove 103. A magnet 3 is installed in the second installation groove 104.

[0027] Specifically, the cap body 1 is installed on the bolt head. By providing the first installation groove 103 and the second installation groove 104 at the opening of the cap body 1, and installing the sealing ring 2 and the magnet 3 in the first installation groove 103 and the second installation groove 104 respectively, the magnet 3 is magnetically attracted to the surface of the flange, and then the gap between the cap body 1 and the surface of the flange is sealed by the sealing ring 2. The installation method is simple, and the magnetic attraction design prevents falling off, so that the bolt assembly is not prone to rust problems.

[0028] Furthermore, the cap body 1 can also be installed at the connection between the bolt tail and the nut to protect the nut and the bolt tail, further preventing the bolt assembly from rusting.

[0029] Among them, the first installation groove 103 and the second installation groove 104 are not connected.

[0030] Furthermore, the sealing ring 2 is a closed annular rubber ring. The distance from the first installation groove 103 to the axis of the cap body 1 is greater than the distance from the second installation groove 104 to the axis of the cap body 1, so that the magnet 3 can also be sealed and protected, increasing its service life.

[0031] As Figure 1 and Figure 3As shown, according to an embodiment of the present utility model, a plurality of second mounting grooves 104 are arranged at intervals along the axial direction of the cap body 1, and a magnet 3 is installed in each second mounting groove 104.

[0032] By providing multiple groups of second mounting grooves 104, compared with a single whole magnet 3, the cost is saved, and for multiple independent magnets 3, when one magnet 3 fails, the remaining magnets 3 can still function, with stronger adaptability and longer durability.

[0033] Among them, the depth of the first mounting groove 103 is less than the depth of the second mounting groove 104, and the depth of the first mounting groove 103 is less than the thickness of the sealing ring 2, so that the surface of the sealing ring 2 protrudes from the surface of the first mounting groove 103 by between 0.02 mm and 0.1 mm, which not only does not affect the magnet 3 to adsorb the flange surface for fixation, but also enables the sealing ring 2 to be squeezed, improving its sealing effect.

[0034] According to an embodiment of the present utility model, the cap body 1 is a plastic cap.

[0035] Among them, the cavity of the accommodation cavity of the plastic cap can be designed according to actual needs. For example, the cavity of the accommodation cavity can be designed into plastic parts of different sizes and shapes according to different specifications and shapes of bolt heads such as stud heads or hexagonal heads.

[0036] The cap body 1 is made of a plastic cap, which is environmentally friendly, has high strength, is corrosion-resistant and has a low cost, and has a longer service life. Of course, in this embodiment, the cap body 1 can also be made of other materials, such as stainless steel. Its purpose does not deviate from the design concept of the present utility model. Therefore, it should fall within the protection scope of the present utility model.

[0037] According to an embodiment of the present utility model, an iron shell 5 is installed in the second mounting groove 104, and the magnet 3 is installed inside the iron shell 5.

[0038] According to an embodiment of the present utility model, the iron shell 5 and the magnet 3 are bonded by glue.

[0039] Installing the iron shell 5 in the second mounting groove 104, when using a plastic cap, since the plastic is integrally formed, the iron shell 5 can adopt an encapsulation process, and thus the cap body 1 and the iron shell 5 can be quickly installed. Installing the iron shell 5 can conduct magnetism and increase the adsorption force of the magnet 3.

[0040] As Figure 4 shown, according to an embodiment of the present utility model, a retaining ring 106 is installed on the second mounting groove 104. The inner diameter of the retaining ring 106 is greater than the inner diameter of the iron shell 5 and less than the outer diameter of the iron shell 5. The retaining ring 106 and the cap body 1 are integrally injection molded.

[0041] Preferably, the length of the iron shell 5 is less than the depth of the second installation groove 104, and the inner surface of the retaining ring 106 abuts against the outer surface of the iron shell 5.

[0042] By providing the retaining ring 106, the iron shell 5 can be better fixed in the second installation groove 104, preventing the iron shell 5 from falling off or loosening from the second installation groove 104.

[0043] According to an embodiment of the present invention, the length of the iron shell 5 is the same as the depth of the second installation groove 104. A relief groove is provided on the iron shell 5, and the retaining ring 106 is located in the relief groove. The outer surface of the retaining ring 106 and the outer surface of the second installation groove 104 are on the same plane.

[0044] Wherein, the iron shell 5 is integrally formed by a first circular ring and a second circular ring. One end of the first circular ring is closed. The outer diameter of the first circular ring is greater than the outer diameter of the second circular ring. The inner diameters of the first circular ring and the second circular ring are the same. The distance from the outer diameter of the first circular ring to the outer diameter of the second circular ring is the groove width of the relief groove. The retaining ring 106 is sleeved on the second circular ring. The outer surface of the second circular ring and the outer surface of the retaining ring 106 are on the same plane. The outer surface of the first circular ring abuts against the inner and outer surfaces of the retaining ring 106, and the inner side surface of the retaining ring 106 abuts against the outer side surface of the second circular ring.

[0045] Wherein, the outer surface of the retaining ring 106, the outer surface of the second installation groove 104, the outer surface of the first circular ring, and the outer surface of the second circular ring all refer to the side close to the flange when installing the protective cap.

[0046] A rubber strip can also be installed on the side wall of the iron shell 5. Since the rubber strip is made of an elastic material, when the magnet 3 is inserted, the rubber strip is squeezed. The magnet 3 and the iron shell 5 can be fixed more firmly. Without affecting the magnetic conductivity of the iron shell 5, the stability of the fixation between the iron shell 5 and the magnet 3 can be enhanced, preventing the magnet 3 from slipping out of the iron shell 5.

[0047] Preferably, the second installation groove 104 is a cylindrical groove, the iron shell 5 is a cylindrical shell, and the magnet 3 is a cylindrical magnet. Optionally, the second installation groove 104 is an arc-shaped groove, the iron shell 5 is a trapezoidal shell, and the magnet 3 is a trapezoidal magnet. As long as the shapes of the iron shell 5 and the magnet 3 are adapted to each other.

[0048] The iron shell 5 and the magnet 3 can be bonded with glue. When setting, the iron shell 5 and the magnet 3 are assembled by a press-fitting method. By coating a layer of glue on the iron shell 5 and then assembling by a press-fitting method, the stability of its fixation can be ensured, and the magnet 3 will not slip out of the iron shell 5.

[0049] As Figure 1 shown, according to an embodiment of the present invention, a groove 4 is provided between every two adjacent second installation grooves 104.

[0050] When the cap body 1 is made of plastic, the plastic needs to be melted into a molten state during injection molding. During the cooling and solidification process of the molten plastic, it continuously shrinks. If the thickness of the plastic part is inconsistent or relatively thick, different degrees of shrinkage will occur. If the outer surface of the plastic part is not hard enough to resist the tensile force generated by the internal shrinkage, the surface material will move inward. Without subsequent compensation, shrinkage depressions will occur on the surface, resulting in low surface flatness and poor sealing performance. Therefore, to avoid this situation, grooves 4 are provided between every two second installation grooves 104, which can effectively prevent the cap body 1 from shrinking.

[0051] As Figure 2 and Figure 3 shown, according to an embodiment of the present invention, the cap body 1 includes a housing 101 and an annular plate 102. The housing 101 has a receiving cavity for receiving the bolt head. The annular plate 102 is fixedly connected to the housing 101, and the annular plate 102 has an opening. The middle area of the annular plate 102 is the opening. The axis of the annular plate 102 coincides with the axis of the housing 101, and the housing 101 is an annular column with one end open.

[0052] The housing 101 and the annular plate 102 are integrally formed. The length of the annular plate 102 is greater than the lengths of the first installation groove 103 and the second installation groove 104. Both the first installation groove 103 and the second installation groove 104 are provided on the annular plate 102.

[0053] As Figure 1 shown, according to an embodiment of the present invention, a notch 105 is provided on the annular plate 102.

[0054] When the distance between the bolt and the side wall of the tower barrel or other side walls is relatively close and the space is narrow, since the radius of the annular plate 102 is greater than the distance from the flange to the side wall of the tower barrel, interference will occur during the installation of the protective cap. Therefore, a notch 105 is provided on one side edge of the annular plate 102 to remove the interfering part, so that it can be applied to a narrower space and will not be unable to be applied due to the large radius of the annular plate 102.

[0055] Chamfers are provided at both ends of the annular plate 102 near the notch 105, so that it is not easy to be scratched by the port of the notch 105 when taking the protective cap, and the use is safer.

[0056] Optionally, the shape of the first installation groove 103 is different from the shape of the annular plate 102, such as square, etc., as long as it can seal the gap between the opening of the cap body 1 and the flange.

[0057] In actual use, according to different usage environments and different bolts, protective caps with different shapes and different magnetic forces are selected and directly installed on the bolt head. They can also be installed at the bolt tail and nut positions. The magnet 3 is adsorbed on the surface of the flange. The magnetic force of the magnet 3 varies according to the magnitude of the magnetic force charged according to the application situation.

[0058] The depth directions of the first installation groove 103, the depth direction of the second installation groove 104, the length direction of the ring plate 102, and the length direction of the iron shell 5 are all the same.

[0059] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0060] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of bolt protection cap, characterized in that: The invention comprises a cap body (1), wherein the cap body (1) has a communicating accommodating cavity and an opening, wherein a first mounting groove (103) is provided on a side of the cap body (1) close to the opening, wherein a sealing ring (2) is installed in the first mounting groove (103), and a second mounting groove (104) is provided on a side of the first mounting groove (103), wherein a magnet (3) is installed in the second mounting groove (104).

2. A new type of bolt protection cap according to claim 1, characterized in that: A plurality of the second installation grooves (104) are arranged at intervals around the axial direction of the cap body (1), and a magnet (3) is installed in each of the second installation grooves (104).

3. A new type of bolt protection cap according to claim 1, characterized in that: The cap body (1) is a plastic cap.

4. A new type of bolt protection cap according to claim 3, characterized in that: An iron shell (5) is installed in the second installation groove (104), and the magnet (3) is installed inside the iron shell (5).

5. A new type of bolt protection cap according to claim 4, characterized in that: The iron shell (5) and the magnet (3) are bonded together by glue.

6. A new type of bolt protection cap according to claim 2, characterized in that: A groove (4) is provided between each two adjacent second mounting grooves (104).

7. A new type of bolt protection cap according to claim 1, characterized in that: The cap body (1) comprises an outer shell (101) and a ring plate (102); the outer shell (101) has the accommodating cavity for accommodating the bolt head; the ring plate (102) is fixedly connected to the outer shell (101); and the ring plate (102) has the opening.

8. A new type of bolt protection cap according to claim 7, characterized in that: The ring plate (102) is provided with a notch (105).

9. A new type of bolt protection cap according to claim 4, characterized in that: A retaining ring (106) is installed on the second installation groove (104), and the inner diameter of the retaining ring (106) is larger than the inner diameter of the iron shell (5) and smaller than the outer diameter of the iron shell (5).

10. A new type of bolt protection cap according to claim 9, characterized in that: The length of the iron shell (5) is the same as the depth of the second mounting groove (104), and a clearance groove is provided on the iron shell (5), and the retaining ring (106) is located in the clearance groove.

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