High-strength rust-proof bolt assembly

Abstract

The utility model relates to the technical field of bolt design, and discloses a high-strength rust-proof bolt assembly which comprises a bolt rod, a threaded surface arranged on the peripheral side of one end of the bolt rod, an embedded head end arranged at the other end of the bolt rod and a plastic sleeve arranged at the end, away from the embedded head end, of the bolt rod in a sleeving mode. The plastic sleeve is provided with a corrosion-resistant film sleeve which is arranged on the bolt rod in a sleeving mode and used for wrapping the peripheral side of the threaded face, a plurality of protection rings are arranged on the peripheral side of the corrosion-resistant film sleeve, and a wrapping cover used for wrapping the peripheral side of the nut after the bolt rod is installed is integrally arranged at the end, away from the plastic sleeve, of the corrosion-resistant film sleeve. The bolt rod is sleeved with a locking hoop used for abutting the wrapping cover against the peripheral side of the nut. And the threaded surface is wrapped and protected through the corrosion-resistant film sleeve and the protection ring, so that the possibility that the threaded surface is damaged after being collided in the transportation process is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of bolt design technology, and specifically relates to a high-strength rust-proof bolt assembly. Background Technology

[0002] There are generally two methods for embedding anchor bolts into concrete foundations: pre-embedding and secondary grouting embedding through pre-drilled holes. These methods are mainly suitable for towers, tall containers, spherical tanks, and mechanical equipment with significant vibration.

[0003] Currently, Chinese patent CN221647388U, published on September 3, 2024, discloses a corrosion-resistant anchor bolt, comprising: a building body; a groove on the top surface of the building body and a water collection trough on the inner side of the building body; an anchor bolt structure on the inner side of the building body, the anchor bolt structure including an L-shaped screw rod, the L-shaped screw rod being embedded in the inner side of the building body, the top surface of the L-shaped screw rod having a threaded groove, a hexagonal screw rod being threadedly connected to the inner side of the threaded groove, a sealing plug being inserted at the top of the inner side of the threaded groove, and a threaded sleeve and a sealing gasket being threadedly connected to the outer wall of the L-shaped screw rod.

[0004] During the transportation of anchor bolts, the threads of the anchor bolts are easily damaged by impacts, which can affect subsequent threaded connections. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength, rust-proof bolt assembly that can protect the threaded surface during transportation.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-strength rust-proof bolt assembly, including a bolt shank, a threaded surface formed on the periphery of one end of the bolt shank, an embedded head end set at the other end of the bolt shank, and a plastic sleeve fitted on the end of the bolt shank away from the embedded head end. The plastic sleeve is provided with a corrosion-resistant film sleeve for fitting onto the bolt shank and for wrapping around the periphery of the threaded surface. The periphery of the corrosion-resistant film sleeve is provided with multiple protective rings. The end of the corrosion-resistant film sleeve away from the plastic sleeve is integrally provided with a wrapping cover for wrapping around the periphery of the nut after the bolt shank is installed. The bolt shank is fitted with a locking clamp for pressing the wrapping cover against the periphery of the nut.

[0007] A further feature of this invention is that the embedded head end includes a base plate welded to the end of the bolt rod and four reinforcing ribs located around the base plate and welded to the bolt rod.

[0008] A further feature of this invention is that a dovetail groove is provided on the periphery of the upper surface of the base plate, and a dovetail block embedded in the dovetail groove is integrally provided on the side of the reinforcing rib.

[0009] A further feature of this invention is that a locking head is provided at one end of the dovetail block, and a slot for the locking head to be inserted is provided on the periphery of the end of the bolt rod.

[0010] A further feature of this invention is that the base plate has a welding hole for embedding the end of the bolt rod.

[0011] A further feature of this invention is that the side of the reinforcing rib that contacts the bolt rod is an arc shape that matches the outer wall of the bolt rod.

[0012] A further feature of this invention is that the outer periphery of the bolt rod is coated with an anti-rust paint layer.

[0013] In summary, this utility model has the following beneficial effects:

[0014] 1. When the bolt is being transported, a plastic sleeve is placed on the end of the bolt that is furthest from the embedded head. The corrosion-resistant film on the plastic sleeve then wraps around the threaded surface, and multiple protective rings provide protection. At this time, the corrosion-resistant film and protective rings can wrap and protect the threaded surface, reducing the possibility of damage to the threaded surface after being bumped during transportation.

[0015] Meanwhile, after the bolt is installed and the nut is threaded onto the threaded surface, a plastic sleeve is placed on the end of the bolt away from the embedded head. The corrosion-resistant film on the plastic sleeve then wraps around the threaded surface, providing corrosion protection and protecting the threaded surface. The end cover of the corrosion-resistant film sleeve is wrapped around the nut and locked with a locking clamp, ultimately providing corrosion protection for the nut.

[0016] 2. By using the embedded head end, including the base plate welded to the end of the bolt rod and four reinforcing ribs located around the base plate and welded to the bolt rod, the structural strength of the bolt rod can be improved by using the base plate and the four reinforcing ribs, which is beneficial to the stable embedding of the bolt rod in the concrete.

[0017] 3. The reinforcing ribs utilize dovetail blocks embedded in the dovetail grooves to improve the connection stability between the reinforcing ribs and the base plate;

[0018] 4. The dovetail block is embedded in the slot using a clip, which helps to improve the connection stability between the reinforcing rib and the bolt rod;

[0019] 5. By utilizing the welding holes provided on the base plate for inserting the ends of the bolt rods, the connection stability between the bolt rods and the base plate can be improved.

[0020] 6. The side of the reinforcing rib that contacts the bolt rod is in an arc shape that matches the outer wall of the bolt rod, thereby increasing the contact area between the reinforcing rib and the bolt rod and further improving the connection stability between the reinforcing rib and the bolt rod;

[0021] 7. The anti-rust paint layer applied to the outer perimeter of the bolt rod can prevent rust and extend the service life of the bolt rod. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is an exploded view of the embedded head end structure in this utility model.

[0025] In the diagram, 1. Bolt rod; 11. Threaded surface; 12. Slot; 2. Embedded head end; 21. Base plate; 211. Dovetail groove; 212. Welding hole; 22. Reinforcing rib; 221. Dovetail block; 222. Clip; 3. Plastic sleeve; 31. Corrosion-resistant film sleeve; 311. Protective ring; 312. Enclosure; 4. Locking clamp. Detailed Implementation

[0026] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] A high-strength rust-proof bolt assembly, as described above Figure 1 , Figure 2This high-strength rust-proof bolt assembly includes a bolt shank 1, a threaded surface 11, an embedded head end 2, and a plastic sleeve 3. The outer periphery of the bolt shank 1 is coated with an anti-rust paint layer. The threaded surface 11 is located on the periphery of one end of the bolt shank 1. The embedded head end 2 is welded to the other end of the bolt shank 1. The embedded head end 2 includes a base plate 21 welded to the end of the bolt shank 1 and four reinforcing ribs 22 located around the base plate 21 and welded to the bolt shank 1. The upper surface of the base plate 21... The periphery of the surface is provided with a dovetail groove 211, and the side of the reinforcing rib 22 is integrally provided with a dovetail block 221 embedded in the dovetail groove 211; at the same time, a clip 222 is integrally provided at one end of the dovetail block 221, and the periphery of the end of the bolt rod 1 is provided with a clip groove 12 for the clip 222 to be inserted; the bottom plate 21 is provided with a welding hole 212 for the end of the bolt rod 1 to be inserted, and the side of the reinforcing rib 22 that contacts the bolt rod 1 is arc-shaped and matches the outer wall of the bolt rod 1.

[0028] Reference Figure 1 The plastic sleeve 3 is fitted onto the end of the bolt rod 1 away from the embedded head end 2, and the plastic sleeve 3 is interference-fitted with the end of the bolt rod 1. A corrosion-resistant film sleeve 31 is bonded to the plastic sleeve 3 for fitting onto the bolt rod 1 and for wrapping around the threaded surface 11. Multiple protective rings 311 are bonded and fixed around the periphery of the corrosion-resistant film sleeve 31. At the end of the corrosion-resistant film sleeve 31 away from the plastic sleeve 3, a cover 312 is integrally provided for wrapping around the nut (not shown in the figure) after the bolt rod 1 is installed. A locking clamp 4 is also fitted onto the bolt rod 1 to press the cover 312 against the periphery of the nut.

[0029] Principle: When the bolt rod 1 is being transported, a plastic sleeve 3 is placed on the end of the bolt rod 1 away from the embedded head end 2. Then, the corrosion-resistant film sleeve 31 on the plastic sleeve 3 can wrap around the threaded surface 11, and multiple protective rings 311 can play a protective role. At this time, the threaded surface 11 can be wrapped and protected by the corrosion-resistant film sleeve 31 and the protective rings 311, reducing the possibility of damage to the threaded surface 11 after being bumped during transportation.

[0030] Meanwhile, after the bolt rod 1 is installed and the nut is threaded onto the threaded surface 11, the plastic sleeve 3 is again placed on the end of the bolt rod 1 away from the embedded head end 2. Then, the corrosion-resistant film sleeve 31 on the plastic sleeve 3 can wrap around the threaded surface 11. The corrosion-resistant film sleeve 31 can play a role in corrosion protection, which is beneficial to protect the threaded surface 11. The wrapping cover 312 at the end of the corrosion-resistant film sleeve 31 is wrapped around the nut and locked with the locking clamp 4. Finally, the nut can be protected against corrosion by the wrapping cover 312.

Claims

1. A high-strength rust-preventive bolt assembly comprising a bolt shank (1), a threaded surface (11) formed on a peripheral side of one end of the bolt shank (1), and a countersunk head end (2) provided at the other end of the bolt shank (1), characterized in that: It also includes a plastic sleeve (3) fitted on the end of the bolt rod (1) away from the embedded head end (2). The plastic sleeve (3) is provided with a corrosion-resistant film sleeve (31) for fitting on the bolt rod (1) and for wrapping around the threaded surface (11). The corrosion-resistant film sleeve (31) is provided with multiple protective rings (311) around its periphery. The corrosion-resistant film sleeve (31) is integrally provided with a cover (312) for wrapping around the nut after the bolt rod (1) is installed at the end away from the plastic sleeve (3). The bolt rod (1) is fitted with a locking clamp (4) for pressing the cover (312) against the nut.

2. A high strength corrosion resistant bolt assembly according to claim 1 wherein: The embedded head end (2) includes a base plate (21) welded to the end of the bolt rod (1) and four reinforcing ribs (22) located around the base plate (21) and welded to the bolt rod (1).

3. A high strength corrosion resistant bolt assembly according to claim 2 wherein: The bottom plate (21) has a dovetail groove (211) on its circumference, and the reinforcing rib (22) has a dovetail block (221) embedded in the dovetail groove (211) integrally provided on its side.

4. A high-strength corrosion-resistant bolt assembly according to claim 3, wherein: A locking head (222) is provided at one end of the dovetail block (221), and a slot (12) for the locking head (222) to be inserted is provided on the periphery of the end of the bolt rod (1).

5. A high-strength corrosion-resistant bolt assembly according to claim 2, wherein: The base plate (21) has a welding hole (212) for the end of the bolt rod (1) to be inserted.

6. A high-strength corrosion-resistant bolt assembly according to claim 2, wherein: The side of the reinforcing rib (22) that contacts the bolt rod (1) is an arc shape that matches the outer wall of the bolt rod (1).

7. A high-strength corrosion-resistant bolt assembly according to claim 1, wherein: The outer periphery of the bolt rod (1) is coated with an anti-rust paint layer.

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