Lock nut

Abstract

The utility model provides a locknut which comprises a nut body, an internal thread is arranged on the inner side of the nut body, the nut body comprises a base layer, a first functional layer and a second functional layer, the first functional layer comprises a nickel-chromium alloy layer and a titanium alloy layer, the second functional layer comprises a nickel-base alloy layer and a bi-component polyurethane coating, and the nickel-base alloy layer and the bi-component polyurethane coating are arranged on the base layer. And the left side of the nut body is in threaded connection with a fastening screw. The second functional layer comprising the nickel-based alloy layer and the bi-component polyurethane coating is arranged, the nickel-based alloy layer has the advantages of high temperature resistance, oxidation resistance, corrosion resistance, wear resistance and the like, the bi-component polyurethane coating has excellent performance such as high adhesive force, good wear resistance, high hardness, chemical resistance, good weather resistance and the like, and meanwhile, the nickel-based alloy layer and the bi-component polyurethane coating are combined to form the composite material. Through the arrangement of the fastening screw and the limiting cone, the limiting cone can be nailed on the inner surface of the bolt to form a sharp groove, the bolt is prevented from rotating in the internal thread, and the nut body is prevented from loosening.

Description

Technical Field

[0001] The utility model relates to an anti-loosening nut and belongs to the technical field of nuts. Background Art

[0002] A nut is a part that is screwed together with a bolt or screw for fastening. It is a component that must be used in all manufacturing machinery. It is divided into several types according to the material, such as carbon steel, stainless steel, and non-ferrous metals (such as copper).

[0003] Existing nuts need to be disassembled and used repeatedly during use, and require strong force to fix them with bolts and workpieces. The internal threads of the nuts may wear after friction with the bolts. Severe wear may damage the internal threads of the nut, thereby causing the connection between the nut and the bolt to loosen, thereby affecting the fixing effect.

[0004] Therefore, a locking nut is proposed. Utility Model Content

[0005] In view of this, the utility model provides a locking nut to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0006] The technical solution of the utility model is implemented as follows: a locking nut comprises a nut body, the inner side of the nut body is provided with an internal thread, the nut body comprises a base layer, a first functional layer and a second functional layer, the first functional layer comprises a nickel-chromium alloy layer and a titanium alloy layer, the second functional layer comprises a nickel-based alloy layer and a two-component polyurethane coating, the left side of the nut body is threadedly connected with a fastening screw, and the inner side of the fastening screw passes through the nut body, and a limiting cone is welded at one end of the fastening screw.

[0007] Further preferably, the first functional layer is arranged on the outer surface of the base layer, and the second functional layer is arranged on the outer surface of the first functional layer.

[0008] Further preferably, the nickel-chromium alloy layer is arranged on the outer surface of the base layer, and the titanium alloy layer is arranged on the outer surface of the nickel-chromium alloy layer.

[0009] Further preferably, the nickel-based alloy layer is disposed on the outer surface of the titanium alloy layer, and the two-component polyurethane coating is coated on the outer surface of the nickel-based alloy layer.

[0010] Further preferably, the nickel-chromium alloy layer and the titanium alloy layer have the same thickness, and the thickness is 3mm-4mm.

[0011] Further preferably, the nickel-based alloy layer and the two-component polyurethane coating have the same thickness, and the thickness is 1.5 mm-2 mm.

[0012] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0013] 1. The utility model is provided with a second functional layer including a nickel-based alloy layer and a two-component polyurethane coating, wherein the nickel-based alloy layer has the advantages of high temperature resistance, oxidation resistance, corrosion resistance and wear resistance, and the two-component polyurethane coating has the advantages of strong adhesion, good wear resistance, high hardness, chemical resistance, good weather resistance and the like. Through the provision of the second functional layer, the wear resistance of the nut body during use can be effectively improved, and then the service life of the nut body can be effectively improved, and the damage of the internal thread due to excessive wear and tear, which in turn causes the nut body and the bolt to loosen, and at the same time, through the provision of the fastening screw and the limiting cone, the limiting cone can be nailed to the inner surface of the bolt to form a pointed groove, thereby preventing the bolt from rotating in the internal thread and preventing the nut body from loosening.

[0014] 2. The utility model is provided with a first functional layer including a nickel-chromium alloy layer and a titanium alloy layer, wherein the nickel-chromium alloy layer has the advantages of high strength, corrosion resistance and rust resistance, and the titanium alloy layer has excellent properties such as high strength, high thermal strength, good corrosion resistance and good low-temperature performance. Through the setting of the first functional layer, the strength of the nut body can be effectively improved, and then the service life of the nut body can be further improved.

[0015] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the nut body of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the first functional layer of the utility model;

[0021] Figure 5 This is a schematic diagram of the second functional layer structure of the utility model.

[0022] Figure numerals: 1. nut body; 11. base layer; 12. first functional layer; 1201. nickel-chromium alloy layer; 1202. titanium alloy layer; 13. second functional layer; 1301. nickel-based alloy layer; 1302. two-component polyurethane coating; 2. fastening screw; 3. internal thread; 4. limiting cone. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] like Figure 1-5 As shown, an embodiment of the utility model provides a locking nut, including a nut body 1, an inner side of the nut body 1 is provided with an internal thread 3, the nut body 1 includes a base layer 11, a first functional layer 12 and a second functional layer 13, the first functional layer 12 includes a nickel-chromium alloy layer 1201 and a titanium alloy layer 1202, the second functional layer 13 includes a nickel-based alloy layer 1301 and a two-component polyurethane coating 1302, a fastening screw 2 is threadedly connected to the left side of the nut body 1, and the inner side of the fastening screw 2 passes through the nut body 1, a limiting cone 4 is welded to one end of the fastening screw 2, the first functional layer 12 is arranged on the outer surface of the base layer 11, the second functional layer 13 is arranged on the outer surface of the first functional layer 12, the nickel-based alloy layer 1301 is arranged on the outer surface of the titanium alloy layer 1202, and the two-component polyurethane coating 1302 is coated on the outer surface of the nickel-based alloy layer 1301.

[0027] A second functional layer 13 including a nickel-based alloy layer 1301 and a two-component polyurethane coating 1302 is provided, wherein the nickel-based alloy layer 1301 has the advantages of high temperature resistance, oxidation resistance, corrosion resistance and wear resistance, and the two-component polyurethane coating 1302 has the advantages of strong adhesion, good wear resistance, high hardness, chemical resistance, good weather resistance and the like. Through the provision of the second functional layer 13, the wear resistance of the nut body 1 during use can be effectively improved, and then the service life of the nut body 1 can be effectively improved, and the damage of the internal thread 3 due to excessive wear and tear, which in turn causes the nut body 1 and the bolt to loosen, and at the same time, through the provision of the fastening screw 2 and the limiting cone 4, the limiting cone 4 can be nailed to the inner surface of the bolt to form a pointed groove, thereby preventing the bolt from rotating in the internal thread 3 and preventing the nut body 1 from loosening.

[0028] Example 2

[0029] In one embodiment, the nickel-chromium alloy layer 1201 is disposed on the outer surface of the base layer 11, and the titanium alloy layer 1202 is disposed on the outer surface of the nickel-chromium alloy layer 1201. The thickness of the nickel-chromium alloy layer 1201 and the titanium alloy layer 1202 are consistent, and the thickness is 3mm-4mm. The thickness of the nickel-based alloy layer 1301 and the two-component polyurethane coating 1302 are consistent, and the thickness is 1.5mm-2mm.

[0030] A first functional layer 12 including a nickel-chromium alloy layer 1201 and a titanium alloy layer 1202 is provided, wherein the nickel-chromium alloy layer 1201 has the advantages of high strength, corrosion resistance and rust resistance, and the titanium alloy layer 1202 has excellent properties such as high strength, high thermal strength, good corrosion resistance and good low-temperature performance. By setting the first functional layer 12, the strength of the nut body 1 can be effectively improved, and then the service life of the nut body 1 can be further improved.

[0031] When the utility model is working, a second functional layer 13 including a nickel-based alloy layer 1301 and a two-component polyurethane coating 1302 is provided, wherein the nickel-based alloy layer 1301 has the advantages of high temperature resistance, oxidation resistance, corrosion resistance and wear resistance, and the two-component polyurethane coating 1302 has the advantages of strong adhesion, good wear resistance, high hardness, chemical resistance, good weather resistance and the like. By providing the second functional layer 13, the wear resistance of the nut body 1 during use can be effectively improved, and then the service life of the nut body 1 can be effectively improved, and the damage of the internal thread 3 due to excessive wear can be avoided, and then the loosening of the nut body 1 and the bolt can be prevented. At the same time, by setting the fastening screw 2 and the limiting cone 4, the limiting cone 4 can be nailed to the inner surface of the bolt to form a pointed groove, thereby preventing the bolt from rotating in the internal thread 3 and preventing the nut body 1 from loosening. A first functional layer 12 including a nickel-chromium alloy layer 1201 and a titanium alloy layer 1202 is set, wherein the nickel-chromium alloy layer 1201 has the advantages of high strength, corrosion resistance and rust resistance, and the titanium alloy layer 1202 has excellent properties such as high strength, high thermal strength, good corrosion resistance and good low-temperature performance. By setting the first functional layer 12, the strength of the nut body 1 can be effectively improved, and then the service life of the nut body 1 can be further improved.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A locking nut, characterized in that: The invention comprises a nut body (1), the inner side of which is provided with an internal thread (3), the nut body (1) comprising a base layer (11), a first functional layer (12) and a second functional layer (13), the first functional layer (12) comprising a nickel-chromium alloy layer (1201) and a titanium alloy layer (1202), the second functional layer (13) comprising a nickel-based alloy layer (1301) and a two-component polyurethane coating (1302), the left side of the nut body (1) being threadedly connected with a fastening screw (2), and the inner side of the fastening screw (2) passing through the nut body (1), and one end of the fastening screw (2) being welded with a limiting cone (4).

2. A locking nut according to claim 1, characterized in that: The first functional layer (12) is arranged on the outer surface of the base layer (11), and the second functional layer (13) is arranged on the outer surface of the first functional layer (12).

3. The anti-loosening nut according to claim 1, characterized in that: The nickel-chromium alloy layer (1201) is arranged on the outer surface of the base layer (11), and the titanium alloy layer (1202) is arranged on the outer surface of the nickel-chromium alloy layer (1201).

4. The anti-loosening nut according to claim 1, characterized in that: The nickel-based alloy layer (1301) is disposed on the outer surface of the titanium alloy layer (1202), and the two-component polyurethane coating (1302) is coated on the outer surface of the nickel-based alloy layer (1301).

5. The anti-loosening nut according to claim 1, characterized in that: The nickel-chromium alloy layer (1201) and the titanium alloy layer (1202) have the same thickness, and both are 3 mm to 4 mm.

6. The anti-loosening nut according to claim 1, characterized in that: The nickel-based alloy layer (1301) and the two-component polyurethane coating (1302) have the same thickness, and both are 1.5 mm to 2 mm.

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