Anti-rust hexagonal head bolt

Abstract

An anti-rust hexagonal head bolt effectively solves the problems that a bolt is prone to rusting and short in service life and comprises a screw, a bolt head is fixed to the upper end of the screw, an annular table is fixed to the lower end of the bolt head, the inner diameter of the annular table is equal to the outer diameter of threads of the screw, an annular oil storage cavity is formed in the annular table and communicated with the screw, and the threaded rod is provided with an oil storage cavity. An oil conveying pipe in the vertical direction is arranged in the bolt head and communicated with the oil storage cavity, a rubber pad is installed below the annular table, the screw vertically penetrates through the rubber pad, an annular rubber boss is fixed to the rubber pad and located on the outer side of the annular table, a limiting ring is fixed to the outer edge face of the rubber boss, and a sealing cap is arranged above the bolt head. A limiting groove corresponding to the limiting ring is formed in the sealing cap, and the sealing cap is connected with the rubber boss through a rope.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical accessories, in particular to an anti-corrosion hexagonal head bolt. Background Art

[0002] Hexagonal head bolts, as mechanical components, consist of a head and a shank. They are used to fasten two parts with through-holes and are tightened and removed with a wrench. Existing hexagonal head bolts are prone to rust when exposed to humid environments for extended periods. This not only affects the appearance, but corrosion can also cause bolt breakage and loosening, endangering property safety. Bolt loosening reduces the preload, leading to fatigue in the hexagonal head bolt connection and shortening its service life. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a rust-proof hexagonal head bolt, which effectively solves the problem that the bolt is easy to rust and has a short service life.

[0004] The technical solution to solve the technical problem is: it includes a screw, a bolt head is fixed at the upper end of the screw, an annular platform is fixed at the lower end of the bolt head, the inner diameter of the annular platform is equal to the outer diameter of the screw thread, an annular oil storage chamber is provided in the annular platform, the oil storage chamber is connected to the screw, a vertical oil pipe is provided in the bolt head, the oil pipe is connected to the oil storage chamber, a rubber pad is installed under the annular platform, the screw passes through the rubber pad up and down, an annular rubber boss is fixed on the rubber pad, the rubber boss is located on the outside of the annular platform, a limiting ring is fixed on the outer edge surface of the rubber boss, a sealing cap is provided above the bolt head, the sealing cap is provided with a limiting groove corresponding to the limiting ring, and the sealing cap and the rubber boss are connected by a rope.

[0005] Preferably, a plug is installed on the bolt head and is inserted into the upper end of the oil delivery pipe, and the cross section of the plug is T-shaped.

[0006] Preferably, the inner diameter of the rubber boss is equal to the outer diameter of the annular platform.

[0007] Compared with traditional equipment, the present invention has the following advantages: 1) The structure is ingenious. Lubricating oil is injected into the oil storage chamber through the oil pipe. The lubricating oil in the oil storage chamber seeps downward through the spiral gap between the threads on the screw, thereby lubricating and rust-proofing the surface of the screw. It is easy to operate and durable. 2) The limiting groove on the sealing cap is clamped with the limiting ring of the rubber boss to achieve complete sealing of the bolt head by the sealing cap, preventing the bolt head from rusting and corrosion, and extending the service life of the bolt head. The sealing cap and the rubber boss are connected by a rope to prevent the sealing cap from being lost. It is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the main view of the utility model;

[0009] Figure 2 It is a schematic diagram of a front sectional view of the present utility model;

[0010] Figure 3 It is a schematic diagram of the three-dimensional structure of the rubber boss in the utility model;

[0011] Figure 4 It is a schematic diagram of the three-dimensional structure of the sealing cap in the utility model.

[0012] Figure numerals: 1, screw; 2, bolt head; 3, annular platform; 4, oil storage chamber; 5, oil pipe; 6, rubber pad; 7, rubber boss; 8, limiting ring; 9, sealing cap; 10, limiting groove; 11, rope; 12, plug. DETAILED DESCRIPTION

[0013] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0014] Depend on Figures 1 to 4 A rust-proof hexagonal head bolt is provided, comprising a screw 1, a bolt head 2 being fixed at the upper end of the screw 1, an annular platform 3 being fixed at the lower end of the bolt head 2, the inner diameter of the annular platform 3 being equal to the outer diameter of the thread of the screw 1, an annular oil storage chamber 4 being provided in the annular platform 3, the oil storage chamber 4 being communicated with the screw 1, a vertical oil delivery pipe 5 being provided in the bolt head 2, the oil delivery pipe 5 being communicated with the oil storage chamber 4, a rubber pad 6 being installed under the annular platform 3, the screw 1 passing through the rubber pad 6 up and down, an annular rubber boss 7 being fixed on the rubber pad 6, the rubber boss 7 being located on the outside of the annular platform 3, a limiting ring 8 being fixed on the outer edge surface of the rubber boss 7, a sealing cap 9 being provided above the bolt head 2, a limiting groove 10 corresponding to the limiting ring 8 being provided on the sealing cap 9, the sealing cap 9 and the rubber boss 7 being connected via a rope 11.

[0015] In order to achieve a good sealing effect on the oil delivery pipe 5, a plug 12 is installed on the bolt head 2 and is inserted into the upper end of the oil delivery pipe 5. The cross section of the plug 12 is T-shaped.

[0016] The inner diameter of the rubber boss 7 is equal to the outer diameter of the annular platform 3 .

[0017] When the present invention is in use, the limiting ring 8 and the sealing cap 9 are both made of rubber. The rubber pad 6 is located below the annular platform 3. The upper surface of the rubber pad 6 fits with the lower surface of the annular platform 3. The inner diameter of the rubber boss 7 is equal to the outer diameter of the annular platform 3. The rubber boss 7 fits with the annular platform 3. The screw 1 passes through the rubber pad 6. The sealing cap 9 is in an open state. The hexagonal head bolt is placed on a suitable workstation. The bolt head 2 is turned with a wrench, and the hexagonal head bolt is tightened on the workstation. The rubber pad 6 has a good tightening and anti-slip effect. The plug 12 is opened and lubricating oil is injected into the oil pipe 5. The lubricating oil flows under the action of oil pressure. Into the oil storage chamber 4, the screw 1 is connected to the oil storage chamber 4, and the lubricating oil in the oil storage chamber 4 seeps downward along the spiral gap between the screw teeth to achieve lubrication and rust prevention of the surface of the screw 1, which can effectively prevent the screw 1 from rusting. After the oil filling is completed, plug the plug 12, and then buckle the sealing cap 9 on the rubber boss 7, so that the limiting groove 10 is stuck on the limiting ring 8, and the sealing cap 9 and the rubber boss 7 are clamped together. The sealing cap 9 completely seals the bolt head 2 to prevent the external environment from corroding the bolt head 2, effectively preventing the bolt head 2 from rusting. The sealing cap 9 and the rubber boss 7 are connected by a rope 11, which is easy to carry and prevents the sealing cap 9 from being lost.

[0018] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the scope of protection of the technical solution of the utility model.

Claims

1. A rust-resistant hexagonal head bolt, characterized in that: The invention comprises a screw rod (1), a bolt head (2) is fixed at the upper end of the screw rod (1), an annular platform (3) is fixed at the lower end of the bolt head (2), the inner diameter of the annular platform (3) is equal to the outer diameter of the thread of the screw rod (1), an annular oil storage chamber (4) is provided in the annular platform (3), the oil storage chamber (4) is communicated with the screw rod (1), a vertical oil delivery pipe (5) is provided in the bolt head (2), the oil delivery pipe (5) is communicated with the oil storage chamber (4), a rubber pad (6) is installed below the annular platform (3), the screw rod (1) passes through the rubber pad (6) up and down, an annular rubber boss (7) is fixed on the rubber pad (6), the rubber boss (7) is located on the outer side of the annular platform (3), a limiting ring (8) is fixed on the outer edge surface of the rubber boss (7), a sealing cap (9) is provided above the bolt head (2), a limiting groove (10) corresponding to the limiting ring (8) is provided on the sealing cap (9), and the sealing cap (9) and the rubber boss (7) are connected via a rope (11).

2. The rust-proof hexagonal head bolt according to claim 1, characterized in that: A plug (12) is mounted on the bolt head (2) and plugged into the upper end of the oil delivery pipe (5). The cross section of the plug (12) is T-shaped.

3. The anti-corrosion hexagonal head bolt according to claim 1, characterized in that: The inner diameter of the rubber boss (7) is equal to the outer diameter of the annular platform (3).

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