A building stainless steel hexagonal bolt

Abstract

The utility model relates to hexagonal bolt technical field discloses a stainless steel hexagonal bolt for building, including screw cap and threaded column, the inside processing of threaded column has internal thread, the inside diameter of internal thread's bottom end is less than the inside diameter of top end, the inside thread type connection of internal thread has screw rod, the top fixed type connection of screw rod has screw cap, and screw cap is located inside the recess, through first screwing screw cap and rotates threaded column into equipment thread groove and sticks equipment surface, after injecting anti -loose glue to recess, screwing screw cap makes screw rod advance downward along conical internal thread, extrudes threaded column bottom expansion and sticks thread groove, forms first anti -loose fixed, when injecting glue, anti -loose glue fills the clearance between internal thread and flows into the gap between threaded column and equipment through injection hole, forms protective film after drying, constitutes second anti -loose barrier, and screw rod continues to extrude the thread side column of cold upsetting steel material downward, makes it extend and sticks thread groove, forms third mechanical anti -loose, and multiple safeguards bolt do not loosen.

Description

Technical Field

[0001] This utility model relates to the field of hexagonal bolt technology, specifically a stainless steel hexagonal bolt for construction. Background Technology

[0002] In the field of building engineering, stainless steel hex bolts are widely used as core connecting components in critical scenarios such as steel structure splicing, equipment installation, and curtain wall fixing. Their connection stability is directly related to the overall safety of the building structure.

[0003] Stainless steel hexagonal bolts rely heavily on thread friction for fixation. However, in environments where building structures are subjected to long-term vibration (such as equipment operation and wind loads) and temperature changes (thermal expansion and contraction causing changes in thread clearance), the friction between the threads gradually decreases, making them prone to loosening. This is especially true in critical areas such as high-rise curtain walls and steel structure nodes, where traditional bolts lack effective mechanical anti-loosening structures, which can lead to connection failure and safety accidents in severe cases.

[0004] Therefore, we propose a solution for stainless steel hexagonal bolts used in construction to address the aforementioned problems. Utility Model Content

[0005] To address the technical problem that existing bolts lack effective mechanical anti-loosening structures, which may lead to connection failure and safety accidents in severe cases, this utility model provides a stainless steel hexagonal bolt for construction.

[0006] This utility model is achieved using the following technical solution: a stainless steel hexagonal bolt for construction, comprising a nut and a threaded post, wherein the bottom of the nut is fixedly connected to the bottom of the threaded post, the threaded post is internally threaded, the inner diameter of the bottom end of the internal thread is smaller than the inner diameter of the top end, a screw shank is internally threaded to the internal thread, and a screw nut is fixedly connected to the top of the screw shank, wherein the screw nut is located inside a groove.

[0007] Preferably, the top of the nut is machined with a groove, and the nut is located inside the groove.

[0008] Preferably, the bottom of the groove is machined with a plurality of glue injection holes, the bottom ends of the plurality of glue injection holes being located around the top of the threaded post.

[0009] Preferably, the bottom of the threaded post is provided with two threaded side posts, and the threaded groove inside the threaded side posts is smaller than the diameter of the screw rod.

[0010] Preferably, the threaded side post is made of cold heading steel.

[0011] Compared with the prior art, the beneficial effects of this utility model are: When using this utility model, to install the hexagonal bolt, first tighten the nut to screw the threaded post into the threaded groove of the equipment and make it fit against the surface of the equipment. After injecting anti-loosening adhesive into the groove, tighten the nut again to push the screw shank downwards along the tapered internal thread, squeezing the bottom of the threaded post to expand and fit against the threaded groove, forming the first layer of anti-loosening fixation. During the adhesive injection, the anti-loosening adhesive fills the gap between the internal thread and flows into the gap between the threaded post and the equipment through the adhesive injection hole. After drying, it forms a protective film, constituting the second layer of anti-loosening barrier. The screw shank continues to press downwards against the cold-headed steel threaded side post, causing it to extend and fit against the threaded groove, forming the third layer of mechanical anti-loosening. It is suitable for construction equipment scenarios with frequent vibrations, providing multiple guarantees to prevent the bolt from loosening. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the nut of this utility model.

[0013] In the diagram: 1. Nut; 2. Threaded post; 3. Groove; 4. Screw cap; 5. Screw shank; 6. Internal thread; 7. Glue injection hole; 8. Threaded side post. Detailed Implementation

[0014] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0015] Example 1: Please refer to Figure 1 - Figure 2 This embodiment of a stainless steel hexagonal bolt for construction includes a nut 1 and a threaded post 2. The bottom of the nut 1 is fixedly connected to the bottom of the threaded post 2. The threaded post 2 has an internal thread 6. The inner diameter of the bottom end of the internal thread 6 is smaller than the inner diameter of the top end. The internal thread 6 is connected to a screw shank 5. The top of the screw shank 5 is fixedly connected to a screw cap 4. The screw cap 4 is located inside a groove 3. The top of the nut 1 has a groove 3. The screw cap 4 is completely embedded inside the groove 3, and the top of the screw cap 4 does not extend beyond the top surface of the nut 1, ensuring that the bolt head is flat. When hexagonal bolts are needed to fix building equipment, the nut 1 is turned with a wrench or other tools, causing the nut 1 to drive the threaded post 2 into the pre-set threaded groove of the equipment until the nut 1 is in contact with the surface of the equipment. Then, anti-loosening glue is injected into the groove 3. The screw cap 4 is then turned with a tool, causing the screw rod 5 to rotate downward along the inside of the internal thread 6. Since the inner diameter of the bottom end of the internal thread 6 is smaller than the inner diameter of the top end, the screw rod 5 will generate radial extrusion force on the bottom of the threaded post 2 through the conical structure of the internal thread 6 during the downward push, causing the bottom of the threaded post 2 to extend and expand outward, thereby achieving the expansion of the bottom of the threaded post 2 and the increase in diameter, which tightly squeezes the inner wall of the threaded groove of the equipment, forming the first anti-loosening fixation, effectively preventing the threaded post 2 from loosening due to vibration and other factors. Furthermore, the bottom of the groove 3 is machined with 6 evenly distributed injection holes 7. The bottom ends of the multiple injection holes 7 are distributed around the top of the threaded post 2 and are connected to the external thread groove of the threaded post 2. When the anti-loosening adhesive is injected into the inside of the groove 3 with the help of the injection tool, the anti-loosening adhesive enters the inside of the internal thread 6 to fill the thread gap, and flows evenly to the top of the threaded post 2 through the injection holes 7 and is injected into the connection gap between the threaded post 2 and the equipment thread groove. After the anti-loosening adhesive dries, a hard polymer protective film will be formed inside and outside the threaded post 2. It can not only fill the thread gap, but also bond the threaded post 2 and the equipment thread groove into a whole, forming a second anti-loosening barrier, which doubles the prevention of the threaded post 2 and the internal thread 6 from loosening. Furthermore, two threaded side posts 8 are symmetrically arranged at the bottom of the threaded post 2. The threaded side posts 8 and the threaded post 2 are integrally formed, and the internal thread groove size is smaller than the diameter of the screw rod 5. The threaded side posts 8 are made of cold-heading steel, which has excellent cold extrusion deformation capability and strength. When subjected to external extrusion, it can produce stable elongation deformation and is not easy to spring back after deformation. When the screw cap 4 is turned down to the position of the threaded side post 8, the screw rod 5 will forcibly compress the internal thread groove of the threaded side post 8. Since the threaded side post 8 is made of cold-heading steel, it will extend outward and expand and tightly fit the inner wall of the thread groove of the equipment, forming a third mechanical anti-loosening fixation. This structural design can utilize the elastic deformation characteristics of cold-heading steel to continuously generate extrusion force on the thread groove, and maintain the anti-loosening effect even after long-term use. It is especially suitable for scenarios where construction equipment vibrates frequently.

[0016] Working principle: When installing this hexagonal bolt, first tighten the nut 1 to screw the threaded post 2 into the equipment's threaded groove and make it fit against the equipment surface. After injecting anti-loosening adhesive into the groove 3, tighten the nut 4 to push the screw shank 5 downwards along the tapered internal thread 6, squeezing the bottom of the threaded post 2 to expand and fit against the threaded groove, forming the first layer of anti-loosening fixation. During adhesive injection, the anti-loosening adhesive fills the gap between the internal thread and flows into the gap between the threaded post and the equipment through the adhesive injection hole 7. After drying, it forms a protective film, constituting the second layer of anti-loosening barrier. The screw shank 5 continues to press down on the cold-headed steel threaded side post 8, causing it to extend and fit against the threaded groove, forming the third layer of mechanical anti-loosening. It is suitable for construction equipment scenarios with frequent vibrations, providing multiple guarantees to prevent the bolt from loosening.

[0017] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A stainless steel hexagonal bolt for construction, comprising a nut (1) and a threaded post (2), characterized in that, The bottom of the nut (1) is fixedly connected to the bottom of the threaded post (2). The threaded post (2) has an internal thread (6) machined inside. The inner diameter of the bottom end of the internal thread (6) is smaller than the inner diameter of the top end. The internal thread (6) is connected to a screw rod (5). The top of the screw rod (5) is fixedly connected to a screw cap (4). The screw cap (4) is located inside the groove (3).

2. The stainless steel hexagonal bolt for construction according to claim 1, characterized in that, The top of the nut (1) is machined with a groove (3), and the screw cap (4) is located inside the groove (3).

3. The stainless steel hexagonal bolt for construction according to claim 1, characterized in that, The bottom of the groove (3) is machined with a plurality of glue injection holes (7), the bottom ends of the plurality of glue injection holes (7) being located around the top of the threaded column (2).

4. A stainless steel hexagonal bolt for construction according to claim 1, characterized in that, The bottom of the threaded post (2) is provided with two threaded side posts (8), and the threaded groove inside the threaded side post (8) is smaller than the diameter of the screw rod (5).

5. A stainless steel hexagonal bolt for construction according to claim 4, characterized in that, The threaded side post (8) is made of cold heading steel.

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