A marine stud with double head and anti-loose stainless steel fastener

Abstract

This utility model discloses a marine double-ended stud anti-loosening stainless steel fastener, comprising a marine double-ended stud with external threads at both ends, and a nut head threaded onto each of the external threads at both ends of the marine double-ended stud. This utility model not only utilizes the elasticity of a first compensating spring to ensure a tighter threaded connection between the nut head and the external threads on the marine double-ended stud, but also further prevents the threads of the marine double-ended stud from loosening by using an anti-slip friction layer on the fastening block to engage with the outer end of the marine double-ended stud. This ensures a more secure threaded installation of the entire nut assembly, avoiding the drawback of existing marine double-ended stud fasteners where vibration and impact during ship navigation can easily weaken the thread engagement friction between the double-ended stud and the nut, ultimately resulting in a better overall anti-loosening effect, greatly ensuring safe use during ship navigation, and making it suitable for widespread application.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel fastener technology, and in particular to a marine double-ended stud anti-loosening stainless steel fastener. Background Technology

[0002] In shipbuilding and maintenance, double-ended studs are used as key fasteners in scenarios such as hull section connection, power equipment (main engine, generator) fixation, and deck pipeline docking. Their threaded structure at both ends allows for stable connection of non-penetrating components by "screwing one end into the threaded hole of the connected part and tightening the other end with a nut after passing through the part". They are the core component of rigid connection in ships.

[0003] However, in practical applications, existing marine double-ended stud fasteners suffer from continuous vibrations from the ship's propulsion system and intermittent impacts from waves, which constantly weaken the threaded engagement friction between the traditional double-ended stud and nut. Existing anti-loosening methods (such as single-spring washers and ordinary double nuts) are ineffective; and gaps can still easily appear under strong vibrations, leading to loosening of the stud and nut connection. Once loosened, this can easily cause component collision damage and even threaten the safety of ship navigation. Therefore, this utility model proposes a marine double-ended stud anti-loosening stainless steel fastener. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a marine double-ended stud anti-loosening stainless steel fastener.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A marine double-ended stud anti-loosening stainless steel fastener includes a marine double-ended stud, both ends of which are provided with external threads, and nut heads are threaded onto the external threads at both ends of the marine double-ended stud respectively; a first compensating spring and an anti-loosening washer are provided sequentially on the side of the two nut heads that are close to each other, and the first compensating spring and the anti-loosening washer are movably sleeved on the marine double-ended stud.

[0007] The two nut heads are each provided with a first threaded groove at one end that is close to each other. The nut heads are connected to the external threaded thread on the double-ended stud through the first threaded groove.

[0008] The inner wall of the first threaded groove is provided with a groove, and an anti-loosening screw is rotatably installed in the groove. The right end of the anti-loosening screw rotatably passes through to the outside of the nut head and is fixedly connected to a fastening screw head. The left end of the anti-loosening screw is threadedly connected to a fastening block, and the fastening block abuts and positions against the outer end of the double-ended stud.

[0009] Furthermore, the fastening block is provided with a second threaded groove, and the left end of the anti-loosening screw is threadedly connected to the second threaded groove.

[0010] Furthermore, the end of the fastening block away from the anti-loosening screw is provided with an anti-slip friction layer, and the fastening block abuts against the outer end of the double-ended stud through the anti-slip friction layer.

[0011] Furthermore, a second compensating spring, sleeved on the anti-loosening screw, is also fixedly connected between the fastening block and the inner wall of the groove.

[0012] Furthermore, the fastening block is provided with a slider, and the side wall of the groove is provided with a slide rail, on which the slider is slidably mounted.

[0013] Furthermore, a bearing is installed on the inner right side of the groove, and the anti-loosening screw is rotatably mounted on the bearing.

[0014] The beneficial effects achieved by this utility model using the above structure are as follows:

[0015] 1. In this utility model, after inserting a marine double-ended stud into the mounting holes of two connected parts, anti-loosening washers and a first compensating spring are sequentially inserted through both ends of the marine double-ended stud. Then, the first threaded groove on the nut head is threadedly locked to the external threads at both ends of the marine double-ended stud. This allows the two nut heads to be threadedly locked together. When the two nut heads are close to each other, the first compensating spring and the anti-loosening washer will both abut and lock the connected parts, thereby achieving the installation and fixation of the connected parts. At the same time, after installation, the elasticity of the first compensating spring can make the threaded connection between the first threaded groove on the nut head and the external threads on the marine double-ended stud tighter, making it less likely for the threads to loosen.

[0016] 2. This marine double-ended stud anti-loosening stainless steel fastener also features a mechanism where the fastening head rotates the anti-loosening screw, causing the fastening block to move to the left through the second threaded groove on the anti-loosening screw. This allows the anti-slip friction layer on the fastening block to engage with the outer end of the marine double-ended stud, further preventing the threads of the marine double-ended stud from loosening. This ensures a more secure threaded installation of the entire nut assembly, avoiding the drawback of existing marine double-ended stud fasteners where vibration and impact during ship navigation can weaken the friction between the double-ended stud and the nut threads, ultimately resulting in a better overall anti-loosening effect.

[0017] In summary, this marine double-ended stud anti-loosening stainless steel fastener not only utilizes the elasticity of the first compensating spring to ensure a tighter threaded connection between the nut head and the marine double-ended stud, preventing thread loosening, but also further prevents thread loosening by using the anti-slip friction layer on the fastening block to engage with the outer end of the marine double-ended stud. This ensures a more secure threaded installation throughout the nut assembly, avoiding the drawback of existing marine double-ended stud fasteners where vibration and impact during ship navigation can weaken the thread engagement friction between the stud and nut. Ultimately, this results in a better overall anti-loosening effect, greatly ensuring safe use during ship navigation and making it suitable for widespread application. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a marine double-ended stud anti-loosening stainless steel fastener proposed in this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a partially enlarged structural schematic diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the various components of this utility model when they are separated.

[0022] In the diagram: 1. Marine double-ended stud; 101. External thread; 2. Nut head; 200. First thread groove; 201. Fastening screw head; 202. Anti-loosening screw; 203. Second thread groove; 204. Fastening block; 205. Anti-slip friction layer; 206. Slider; 207. Slide rail; 208. Second compensating spring; 209. Bearing; 210. Groove; 3. Anti-loosening washer; 4. First compensating spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-4A marine double-ended stud anti-loosening stainless steel fastener includes a marine double-ended stud 1, both ends of which are provided with external threads 101, and nut heads 2 are threadedly installed on the external threads 101 at both ends of the marine double-ended stud 1; a first compensating spring 4 and an anti-loosening washer 3 are sequentially provided on the side of the two nut heads 2 that are close to each other, and the first compensating spring 4 and the anti-loosening washer 3 are movably sleeved on the marine double-ended stud 1; a first threaded groove 200 is provided on the side of the two nut heads 2 that are close to each other, and the nut heads 2 are threadedly connected to the external threads 101 on the double-ended stud 1 through the first threaded groove 200;

[0025] The inner wall of the first threaded groove 200 is provided with a groove 210. An anti-loosening screw 202 is rotatably installed in the groove 210. The right end of the anti-loosening screw 202 rotatably passes through to the outside of the nut head 2 and is fixedly connected to a fastening screw head 201. The left end of the anti-loosening screw 202 is threadedly connected to a fastening block 204, and the fastening block 204 abuts against the outer end of the double-ended stud 1 for positioning.

[0026] In this embodiment, the fastening block 204 is provided with a second threaded groove 203, and the left end of the anti-loosening screw 202 is threadedly connected to the second threaded groove 203; the end of the fastening block 204 away from the anti-loosening screw 202 is provided with an anti-slip friction layer 205, and the fastening block 204 abuts against the outer end of the double-ended stud 1 through the anti-slip friction layer 205.

[0027] In this embodiment, a second compensating spring 208, sleeved on the anti-loosening screw 202, is also fixedly connected between the fastening block 204 and the inner wall of the groove 210.

[0028] The fastening block 204 is equipped with a slider 206, and the side wall of the groove 210 is equipped with a slide rail 207, on which the slider 206 is slidably mounted. The inner right side wall of the groove 210 is equipped with a bearing 209, on which the anti-loosening screw 202 is rotatably mounted.

[0029] like Figure 1-4As shown, this marine double-ended stud anti-loosening stainless steel fastener can be used for the installation and fixing of connecting parts such as ship hull decks. It has threaded structures at both ends (such as external thread 101), and can be inserted into the mounting holes of two connected parts through the marine double-ended stud 1. After the two parts are inserted, the nuts are tightened to achieve a stable connection and fixation. Specifically, after the marine double-ended stud 1 is inserted into the mounting holes of the two connected parts, anti-loosening washers 3 and first compensating springs 4 are sequentially inserted through both ends of the marine double-ended stud 1. Then, the first threaded groove 200 on the nut head 2 is threadedly locked to the external threads 101 at both ends of the marine double-ended stud 1. This allows the two nut heads 2 to be threadedly locked together. When the two nut heads 2 are close to each other, the first compensating spring 4 and the anti-loosening washer 3 will both abut and lock the connected parts, thereby achieving the installation and fixation of the connected parts. At the same time, after installation, the first compensating spring 4 will be compressed. Through the elastic compensation effect of the first compensating spring 4, the threaded connection between the first threaded groove 200 on the nut head 2 and the external threads 101 on the marine double-ended stud 1 can be made tighter, and the threads are less likely to loosen. Furthermore, the anti-loosening screw 202 is rotated by the fastening screw head 201, causing the fastening block 204 to move to the left through the second thread groove 203 on the anti-loosening screw 202. When the fastening block 204 moves to the left, it also drives the anti-slip friction layer 205 to further abut and position the outer end of the marine double-ended stud 1. In this way, the anti-slip friction layer 205 on the fastening block 204 abuts and positions the outer end of the marine double-ended stud 1, which can further prevent the marine double-ended stud 1 from becoming loose. This ensures that the threaded installation between the entire nut assembly is more secure, avoiding the disadvantage of existing marine double-ended stud fasteners that are easily weakened by vibration and impact during ship navigation. Ultimately, the overall anti-loosening effect is better, greatly ensuring the safe use of the ship and making it suitable for widespread use.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A marine double-ended stud anti-loosening stainless steel fastener, comprising a marine double-ended stud (1), wherein both ends of the marine double-ended stud (1) are provided with external threads (101), characterized in that, Nut heads (2) are threaded onto the external threads (101) at both ends of the marine double-ended stud (1); a first compensating spring (4) and an anti-loosening washer (3) are sequentially provided on the side of the two nut heads (2) that are close to each other, and the first compensating spring (4) and the anti-loosening washer (3) are movably sleeved on the marine double-ended stud (1). The two nut heads (2) are provided with a first thread groove (200) at one end that is close to each other. The nut head (2) is threadedly connected to the external thread (101) on the double-ended stud (1) through the first thread groove (200). The inner wall of the first threaded groove (200) is provided with a groove (210), and an anti-loosening screw (202) is rotatably installed in the groove (210). The right end of the anti-loosening screw (202) rotatably passes through to the outside of the nut head (2) and is fixedly connected to a fastening screw head (201). The left end of the anti-loosening screw (202) is threadedly connected to a fastening block (204), and the fastening block (204) abuts against the outer end of the double-ended stud (1) for positioning.

2. The marine double-ended stud anti-loosening stainless steel fastener according to claim 1, characterized in that, The fastening block (204) is provided with a second threaded groove (203), and the left end of the anti-loosening screw (202) is threadedly connected to the second threaded groove (203).

3. The marine double-ended stud anti-loosening stainless steel fastener according to claim 1, characterized in that, The fastening block (204) is provided with an anti-slip friction layer (205) at the end away from the anti-loosening screw (202), and the fastening block (204) abuts against the outer end of the double-headed stud (1) through the anti-slip friction layer (205).

4. The marine double-ended stud anti-loosening stainless steel fastener according to claim 1, characterized in that, A second compensating spring (208) sleeved on the anti-loosening screw (202) is also fixedly connected between the fastening block (204) and the inner wall of the groove (210).

5. A marine double-ended stud anti-loosening stainless steel fastener according to claim 1, characterized in that, The fastening block (204) is provided with a slider (206), and the side wall of the groove (210) is provided with a slide rail (207). The slider (206) is slidably installed on the slide rail (207).

6. A marine double-ended stud anti-loosening stainless steel fastener according to claim 1, characterized in that, A bearing (209) is installed on the inner right side of the groove (210), and the anti-loosening screw (202) is rotatably installed on the bearing (209).

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