Anti-disassembly bolt for road guardrail

Abstract

The utility model relates to the technical field of bolts, and provides an anti-disassembly bolt for a road guardrail, which comprises a screw rod and a screw head, the screw rod is fixedly connected with the screw head, a protective sleeve is movably sleeved on the outer surface of the screw rod, a plurality of sliding grooves are arranged in the protective sleeve, the anti-disassembly bolt further comprises a plurality of clamping grooves, and the clamping grooves are arranged on the outer surface of the screw rod. The multiple clamping grooves are formed in the outer surface of the protective sleeve and communicate with the sliding groove; the protective cover is movably embedded in the protective sleeve; the protective cover covers the outer surface of the protective sleeve, the multiple clamping blocks of the protective cover are embedded into the protective sleeve, the clamping blocks are embedded into a gap between the hexagonal screw head and the protective sleeve, the stability of the protective cover is improved, the multiple limiting blocks are fixedly installed on the edge of the protective cover, and the limiting elastic pieces are fixedly installed on the outer surfaces of the multiple limiting blocks. And the limiting blocks are embedded into the sliding grooves, and the limiting elastic pieces are embedded into the clamping grooves, so that the protective cover is more stably connected with the protective sleeve, and the cross-shaped groove is protected.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, and in particular to an anti-disassembly bolt for highway guardrails. Background Technology

[0002] A bolt is a fastener with external threads, usually used in conjunction with a nut with internal threads, to tightly connect two or more parts together. Bolts are one of the essential components in mechanical assembly and are widely used in construction, bridges, automobiles, aerospace, and many other fields.

[0003] However, in the existing technology, most bolts are relatively easy to disassemble after installation and do not have anti-disassembly function. For some highway guardrails, after being installed with bolts, criminals can disassemble and steal them, thus causing economic losses, reducing the protection effect of the highway, increasing the danger, and the bolts are prone to loosening over time after installation, causing the highway guardrail to fall apart and reducing the protection function. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the existing technology where most bolts are easy to disassemble after installation and do not have anti-disassembly function. For some highway guardrails, after being installed with bolts, criminals can disassemble and steal them, thus causing economic losses, reducing the protective effect on the highway, increasing the danger, and the bolts are prone to loosening after a long time, causing the highway guardrail to fall apart and reducing the protective function.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an anti-disassembly bolt for highway guardrails, comprising: a screw rod and a screw head, wherein the screw rod and the screw head are fixedly connected, a protective sleeve is movably fitted on the outer surface of the screw rod, and the interior of the protective sleeve has multiple sliding grooves, and further comprising:

[0006] Multiple slots are formed on the outer surface of the protective sleeve, and the multiple slots are connected to the sliding groove;

[0007] A protective cover is movably embedded inside a protective sleeve, and multiple limiting blocks are fixedly installed on the outer surface of the protective cover;

[0008] Multiple limiting elastic plates are fixedly installed at the bottom of the multiple limiting blocks.

[0009] Preferably, the bottom of the protective cover is fixedly installed with multiple locking blocks.

[0010] The technical effect of adopting the above-mentioned further solution is that multiple locking blocks are embedded inside the protective sleeve, and the locking blocks are embedded in the gap between the hexagonal screw head and the protective sleeve, thereby improving the stability of the protective cover.

[0011] Preferably, the bottom of the protective sleeve is fixedly equipped with multiple anti-slip protrusions.

[0012] The technical effect of adopting the above-mentioned further solution is that the anti-slip protrusions contact the highway guardrail, which can prevent the screw from loosening.

[0013] Preferably, the outer surface of the screw is provided with a threaded groove.

[0014] The technical effect of adopting the above-mentioned further solution is that the screw is installed and fixed to the highway guardrail through the threaded groove opened on the outer surface.

[0015] Preferably, the outer surface of the screw head is provided with a cross groove.

[0016] The technical advantage of adopting the above-mentioned further solution is that the screw can be installed more effectively through the cross groove.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0018] 1. In this utility model, the screw is installed and fixed to the highway guardrail through the threaded groove on the outer surface of the screw head via the cross groove. The protective sleeve is movably sleeved on the outer surface of the screw. As the screw is inserted into the installation hole, the screw head is inserted into the protective sleeve. The protective sleeve protects the screw head and prevents disassembly with a wrench. Since the protective sleeve is cylindrical and movably sleeved on the outer surface of the screw, the wrench cannot be unscrewed, thus achieving the effect of preventing disassembly. Multiple anti-slip protrusions are also fixedly installed at the bottom of the protective sleeve. The anti-slip protrusions contact the highway guardrail to prevent the screw from loosening.

[0019] 2. In this utility model, a protective cover is placed on the outer surface of the protective sleeve, so that multiple locking blocks are embedded inside the protective sleeve. The locking blocks are embedded in the gap between the hexagonal screw head and the protective sleeve, which improves the stability of the protective cover. Multiple limiting blocks are fixedly installed on the edge of the protective cover, and limiting elastic pieces are fixedly installed on the outer surface of each limiting block. The limiting blocks are embedded inside the sliding groove, and the limiting elastic pieces are embedded inside the locking groove, so that the protective cover is more stably connected to the protective sleeve, protecting the cross groove and improving the anti-disassembly effect. Attached Figure Description

[0020] Figure 1 This utility model provides a structural schematic diagram of an anti-disassembly bolt for highway guardrails;

[0021] Figure 2 This utility model provides a side view structural diagram of an anti-disassembly bolt for highway guardrails;

[0022] Figure 3This utility model provides an exploded structural diagram of an anti-disassembly bolt for highway guardrails;

[0023] Figure 4 This utility model provides a cross-sectional structural diagram of an anti-disassembly bolt for highway guardrails;

[0024] Figure 5 This utility model provides a schematic diagram of a protective cover structure for anti-disassembly bolts used in highway guardrails.

[0025] Legend:

[0026] 1. Screw; 101. Threaded groove; 102. Protective sleeve; 103. Protective cover; 104. Anti-slip protrusion; 105. Slot; 106. Slide groove; 107. Screw head; 108. Cross groove; 109. Limiting block; 110. Limiting elastic plate; 111. Locking block. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0029] Example 1, as Figure 1-5 As shown, this utility model provides an anti-disassembly bolt for highway guardrails, including: a screw rod 1 and a screw head 107, the screw rod 1 and the screw head 107 are fixedly connected, a protective sleeve 102 is movably sleeved on the outer surface of the screw rod 1, the protective sleeve 102 has multiple sliding grooves 106 inside, and multiple anti-slip protrusions 104 are fixedly installed at the bottom of the protective sleeve 102; a threaded groove 101 is opened on the outer surface of the screw rod 1; and a cross groove 108 is opened on the outer surface of the screw head 107.

[0030] In this embodiment, the screw 1 is installed and fixed to the highway guardrail through the cross groove 108 on the outer surface of the screw head 107 and the threaded groove 101 on the outer surface. The protective sleeve 102 is movably sleeved on the outer surface of the screw 1. As the screw 1 is inserted into the installation hole, the screw head 107 is inserted into the protective sleeve 102. The protective sleeve 102 protects the screw head 107 and can prevent disassembly with a wrench. Since the protective sleeve 102 is cylindrical and movably sleeved on the outer surface of the screw 1, the wrench cannot be unscrewed, thus achieving the effect of preventing disassembly. Multiple anti-slip protrusions 104 are also fixedly installed at the bottom of the protective sleeve 102. The anti-slip protrusions 104 are in contact with the highway guardrail and can prevent the screw 1 from loosening.

[0031] Example 2, as Figure 1-5 As shown, multiple slots 105 are formed on the outer surface of the protective sleeve 102, and the multiple slots 105 are connected to the sliding groove 106; the protective cover 103 is movably embedded inside the protective sleeve 102, and multiple limiting blocks 109 are fixedly installed on the outer surface of the protective cover 103; multiple limiting elastic pieces 110 are fixedly installed at the bottom of the multiple limiting blocks 109; multiple locking blocks 111 are fixedly installed at the bottom of the protective cover 103.

[0032] In this embodiment, the protective cover 103 is placed on the outer surface of the protective sleeve 102, so that multiple locking blocks 111 are embedded inside the protective sleeve 102. The locking blocks 111 are embedded in the gap between the hexagonal screw head 107 and the protective sleeve 102, which improves the stability of the protective cover 103. Multiple limiting blocks 109 are fixedly installed at the edge of the protective cover 103. Limiting elastic pieces 110 are fixedly installed on the outer surface of the multiple limiting blocks 109. The limiting blocks 109 are embedded inside the sliding groove 106, and the limiting elastic pieces 110 are embedded inside the locking groove 105, so that the protective cover 103 is more stably connected to the protective sleeve 102, protecting the cross groove 108 and improving the anti-disassembly effect.

[0033] Working principle: In use, the screw 1 is installed and fixed to the highway guardrail through the cross groove 108 on the outer surface of the screw head 107 and the threaded groove 101 on the outer surface. The protective sleeve 102 is movably sleeved on the outer surface of the screw 1. As the screw 1 is inserted into the installation hole, the screw head 107 is inserted into the protective sleeve 102. The protective sleeve 102 protects the screw head 107, preventing disassembly with a wrench. Because the protective sleeve 102 is cylindrical and movably sleeved on the outer surface of the screw 1, a wrench cannot loosen it, thus preventing disassembly. Multiple anti-slip protrusions 104 are also fixedly installed at the bottom of the protective sleeve 102, and the anti-slip protrusions 104 contact the highway guardrail. This prevents the screw 1 from loosening. The protective cover 103 is placed on the outer surface of the protective sleeve 102, so that multiple locking blocks 111 are embedded inside the protective sleeve 102. The locking blocks 111 are embedded in the gap between the hexagonal screw head 107 and the protective sleeve 102, which improves the stability of the protective cover 103. Multiple limiting blocks 109 are fixedly installed on the edge of the protective cover 103. Limiting elastic pieces 110 are fixedly installed on the outer surface of the multiple limiting blocks 109. The limiting blocks 109 are embedded inside the sliding groove 106, and the limiting elastic pieces 110 are embedded inside the locking groove 105, so that the protective cover 103 is more stably connected to the protective sleeve 102, protecting the cross groove 108 and improving the anti-disassembly effect.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A tamper-resistant bolt for a highway guardrail, comprising: A screw rod (1) and a screw head (107) are fixedly connected, the outer surface of the screw rod (1) is movably sleeved with a protective sleeve (102), and the inside of the protective sleeve (102) is provided with a plurality of sliding grooves (106), characterized by further comprising: A plurality of clamping grooves (105) are formed in the outer surface of the protective sleeve (102), and the plurality of clamping grooves (105) are communicated with the sliding grooves (106); A protective cover (103) is movably embedded in the inside of the protective sleeve (102), and the outer surface of the protective cover (103) is fixedly provided with a plurality of limiting blocks (109); A plurality of limiting elastic sheets (110) are fixedly installed at the bottom of the plurality of limiting blocks (109).

2. A tamperproof bolt for a highway guard rail according to claim 1, characterized in that: The bottom of the protective cover (103) is fixedly provided with a plurality of clamping blocks (111).

3. The tamper-resistant bolt for highway guardrails according to claim 1, characterized in that: The bottom of the protective sleeve (102) is fixedly provided with a plurality of anti-skid convex blocks (104).

4. The tamper-resistant bolt for highway guardrails according to claim 1, characterized in that: The outer surface of the screw rod (1) is provided with a threaded groove (101).

5. The tamper-resistant bolt for highway guardrails according to claim 1, characterized in that: The outer surface of the screw head (107) is provided with a cross groove (108).

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