Anti-corrosion road guardrail anti-theft bolt

Abstract

The utility model discloses a corrosion-resistant road guardrail anti-theft bolt which comprises a bolt body and a nut screwed on the bolt body in a suspending mode through threads, and an anti-theft structure is arranged at the bottom of the nut. The anti-theft structure comprises a set of opposite curve groove holes, a connecting part, a plurality of semicircular protrusions, a limiting ring, a set of opposite sliding blocks, a groove part and a plurality of semicircular grooves. The anti-theft nut has the advantages that due to the fact that the anti-theft structure is arranged at the bottom of the nut, after the nut is locked, the limiting ring is arranged on the bolt body in a sleeved mode along the set of opposite curve groove holes, the groove portion on the limiting ring is matched with the connecting portion at the bottom of the nut, and the anti-theft nut can not be loosened due to the fact that the loosening direction generated by vibration of the nut is anticlockwise rotation. The limiting ring can lock the nut to achieve the loosening purpose, and the upper end of the limiting ring is bonded with the nut through the adhesive, so that the anti-theft performance is greatly improved, the disassembly difficulty is increased, and meanwhile, the anti-prying capacity is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of anti-theft bolt, specifically is a kind of corrosion-resistant highway guardrail anti-theft bolt. BACKGROUND

[0002] In traffic safety facilities, bolt plays a key role in the installation and maintenance of wave-shaped guardrails. Wave-shaped guardrails are the first line of defense for road safety protection, and their main function is to absorb and disperse vehicle impact force to reduce accident damage. The bolt is the key to achieving this function, and its design and selection directly affect the service life and maintenance cost of the wave-shaped guardrail. Therefore, during the design and construction of traffic safety facilities, attention should be paid to the selection and application of bolts to ensure road safety.

[0003] Octagonal AB anti-theft bolts and five-corner anti-theft bolts are commonly used types of anti-theft bolts in wave-shaped guardrails. The octagonal AB anti-theft bolt requires a special tool for disassembly due to its unique octagonal shape. The five-corner anti-theft bolt increases the difficulty of disassembly through a special five-corner design. However, using a single change in shape to achieve anti-theft purposes has weak anti-theft performance and is easily damaged externally. SUMMARY

[0004] To overcome the above defects, the utility model provides a kind of corrosion-resistant highway guardrail anti-theft bolt to solve the problem of highway guardrail bolt theft.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A kind of corrosion-resistant highway guardrail anti-theft bolt, including bolt body and nut that is screwed on bolt body, the bottom of the nut is provided with anti-theft structure;

[0007] The anti-theft structure includes a set of opposite curved slot holes, a connecting part, a plurality of semicircular protrusions, a limiting ring, a set of opposite sliders, a groove part and a plurality of semicircular grooves. A set of opposite curved slot holes are opened on the outer surface of the bolt body. The connecting part is an integral structure and is provided at the bottom of the nut. A plurality of semicircular protrusions are evenly arranged on the outer surface of the connecting part. The limiting ring is sleeved on the bolt body and located at the bottom of the nut. A set of opposite sliders are installed on both sides of the inner bottom of the limiting ring. The groove part is provided on the inner top of the limiting ring. A plurality of semicircular grooves are evenly arranged on the inner surface of the groove part and correspond to the plurality of semicircular protrusions.

[0008] Further, the nut has an internal thread corresponding to the bolt body.

[0009] Further, the connecting part has a circular hole one corresponding to the bolt body at the center, and the limiting ring has a circular hole two corresponding to the bolt body at the center.

[0010] Further, the upper end of the limiting ring is bonded with the nut by an adhesive, and the adhesive is prepared by mixing (meth) acrylate, an initiator, an auxiliary accelerator, a stabilizer (an inhibitor), a dye and a filler in a certain proportion, so that the limiting ring and the nut can be bonded.

[0011] Further, the bolt body comprises a semicircular head and a screw rod part, the semicircular head is arranged in a semicircular shape and cannot be easily unscrewed, and can play a role of anti-theft.

[0012] The utility model provides a kind of corrosion-resistant highway guardrail anti-theft bolt, with the following beneficial effects, bolt body adopts carbon steel material, with good strength and corrosion resistance, head semicircular arrangement, cannot be easily unscrewed, can play the role of anti-theft;By being equipped with anti-theft structure at the bottom of nut, when nut is locked, limit ring is sleeved on bolt body along a set of opposite curve slot hole, and recess portion on limit ring and the connecting portion of nut bottom are matched, since the loosening direction generated by nut vibration is counterclockwise rotation, limit ring can lock nut, to achieve relaxation purposes, and the upper end of limit ring is bonded with nut by adhesive, greatly improve the anti-theft performance, increase dismounting difficulty, and enhance the pry ability simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a kind of corrosion-resistant highway guardrail anti-theft bolt schematic view described in the utility model.

[0014] Figure 2 It is bolt body rear view described in the utility model.

[0015] Figure 3 It is nut front view described in the utility model.

[0016] Figure 4 It is nut top view described in the utility model.

[0017] Figure 5 It is limit ring sectional view described in the utility model.

[0018] Figure 6 It is limit ring top view described in the utility model.

[0019] Figure 7 It is limit ring bottom view described in the utility model.

[0020] In the drawing: 1, bolt body;2, nut;3, curve slot hole;4, connecting portion;5, semicircular protrusion;6, limit ring;7, sliding block;8, recess portion;9, semicircular groove;10, circular hole one;11, circular hole two;12, semicircular head;13, screw rod part. DETAILED DESCRIPTION

[0021] In order to make the above objectives, characteristics and advantages of the utility model more apparent, specific embodiments of the utility model will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the utility model. However, the utility model can be implemented in many ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0022] Please refer to Figures 1 to 7 As shown in the figure, the application provides a kind of corrosion-resistant highway guardrail anti-theft bolt, including bolt body 1 and the nut 2 of thread suspension in bolt body 1, the bottom of nut 2 is equipped with anti-theft structure;Anti-theft structure includes a group of opposite curved slot holes 3, connecting portion 4, several semicircular protrusions 5, limit ring 6, a group of opposite sliding blocks 7, recessed portion 8 and several semicircular grooves 9, a group of opposite curved slot holes 3 are opened on the outer surface of bolt body 1, connecting portion 4 is arranged at the bottom of nut 2, is an integral structure, several semicircular protrusions 5 are evenly arranged on the outer surface of connecting portion 4, limit ring 6 is sleeved on bolt body 1, and located at the bottom of nut 2, a group of opposite sliding blocks 7 are installed in the inner bottom of limit ring 6 two sides, recessed portion 8 is arranged in the inner top of limit ring 6, several semicircular grooves 9 are evenly arranged on the inner surface of recessed portion 8, and correspond to several semicircular protrusions 5.

[0023] In the embodiment, bolt body 1 adopts carbon steel material, has good strength and corrosion resistance, when installing, first, bolt body 1 is passed through the highway guardrail needing to be fixed, and suspension locking nut 2, a group of opposite sliding blocks 7 are installed in the inner bottom of limit ring 6 two sides, limit ring 6 is spirally sleeved on bolt body 1 along a group of opposite curved slot holes 3, and recessed portion 8 on limit ring 6 and connecting portion 7 at the bottom of nut 2 are matched, that is, several semicircular protrusions 5 on the outer surface of connecting portion 4 are embedded in several semicircular grooves 9 on the inner surface of recessed portion 8, since the loosening direction generated by the vibration of nut 2 is counterclockwise rotation, limit ring 6 can lock nut 2, so as to achieve the purpose of relaxation, when installing, the upper surface of limit ring 6 is smeared with adhesive, can realize the adhesion of limit ring 6 and nut 2, greatly improves the anti-theft performance, increases the dismounting difficulty, and simultaneously enhances the prying ability.

[0024] In some embodiments, nut 2 is internally tapped with an internal thread corresponding to bolt body 1, facilitating the suspension locking of nut 2.

[0025] In some embodiments, a circular hole one 10 corresponding to bolt body 1 is opened at the center of connecting portion 4, and a circular hole two 11 corresponding to bolt body 1 is opened at the center of limit ring 6, facilitating the passing of connecting portion 4 and limit ring 6 through bolt body 1.

[0026] In some embodiments, the upper end of the limiting ring 6 is bonded with the nut 2 by an adhesive, and the adhesive is prepared by mixing (meth) acrylate, initiator, co-promoter, stabilizer (polymerization inhibitor), dye and filler in a certain proportion, which is a product available in the market and can realize the bonding of the limiting ring 6 and the nut 2.

[0027] In some embodiments, the bolt body 1 comprises a semicircular head 12 and a screw rod 13, and the head is semicircular and cannot be easily unscrewed, which can play a role of anti-theft.

[0028] The above technical scheme only embodies the preferred technical scheme of the utility model, and some changes made by the person skilled in the art to some parts of the utility model also embody the principle of the utility model and are within the protection scope of the utility model.

Claims

1. A corrosion-resistant anti-theft bolt for highway guardrails, comprising a bolt body (1) and a nut (2) threaded onto the bolt body (1), characterized in that, The bottom of the nut (2) is provided with an anti-theft structure; The anti-theft structure includes a set of opposing curved slots (3), a connecting part (4), several semi-circular protrusions (5), a limiting ring (6), a set of opposing sliders (7), a groove (8), and several semi-circular grooves (9). A set of opposing curved slots (3) are opened on the outer surface of the bolt body (1). The connecting part (4) is set at the bottom of the nut (2) and is an integral structure. Several semi-circular protrusions (5) are evenly arranged on the outer surface of the connecting part (4). The limiting ring (6) is fitted on the bolt body (1) and is located at the bottom of the nut (2). A set of opposing sliders (7) are installed on both sides of the bottom of the limiting ring (6). The groove (8) is set at the top of the limiting ring (6). Several semi-circular grooves (9) are evenly arranged on the inner surface of the groove (8) and correspond to several semi-circular protrusions (5).

2. The corrosion-resistant anti-theft bolt for highway guardrails according to claim 1, characterized in that, The nut (2) has internal threads that correspond to the bolt body (1).

3. The anti-theft bolt for corrosion-resistant highway guardrails according to claim 1, characterized in that, The connecting part (4) has a circular hole (10) at its center that corresponds to the bolt body (1), and the limiting ring (6) has a circular hole (11) at its center that corresponds to the bolt body (1).

4. The anti-theft bolt for corrosion-resistant highway guardrails according to claim 1, characterized in that, The upper end of the limiting ring (6) is bonded to the nut (2) with adhesive.

5. The corrosion-resistant anti-theft bolt for highway guardrails according to claim 1, characterized in that, The bolt body (1) includes a semi-circular head (12) and a threaded part (13).

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