CN202971499U - High-strength anti-corrosion fastening screw - Google Patents
High-strength anti-corrosion fastening screw Download PDFInfo
- Publication number
- CN202971499U CN202971499U CN 201220753217 CN201220753217U CN202971499U CN 202971499 U CN202971499 U CN 202971499U CN 201220753217 CN201220753217 CN 201220753217 CN 201220753217 U CN201220753217 U CN 201220753217U CN 202971499 U CN202971499 U CN 202971499U
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- CN
- China
- Prior art keywords
- fastening screw
- planes
- strength anti
- wrench
- corrosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The utility model discloses a high-strength anti-corrosion fastening screw and belongs to a fastening piece. The high-strength anti-corrosion fastening screw usually matches with a casing pipe and is used for fastening a steel rail of a railway on a concrete sleeper. The high-strength anti-corrosion fastening screw comprises a screw body with external threads and a head portion which is used for being clamped by a wrench. Six planes are arranged on the peripheral wall of the head portion. A regular hexagon is defined by the six planes. An axial groove is arranged in the middle of each plane. When the high-strength anti-corrosion fastening screw is screwed down by a user with the wrench, applied force of rotation of the wrench can be concentrated upon pointedness positions of the periphery wall of the head portion, and therefore the wrench is not prone to slipping.
Description
Technical field:
The utility model relates to a kind of fastening piece, is specifically a kind of normal be used in conjunction with fastener and sleeve pipe, for the high-intensity corrosion fastening screw that railway track is fastened on concrete sleeper.
Background technique:
The structure of screw rod is comparatively simple, it is generally by forming with the externally threaded body of rod with for the head that spanner blocks, six planes are arranged on the periphery wall of head, six planes surround regular hexagon, just because of this structure, people also are referred to as hexagon-head with head sometimes, during use, often spanner are stuck on this hexagon-head and tighten operation.We know, make in the process of the above-mentioned screw rod that screws up with a wrench people, tighten active force and mostly concentrate on edges and corners on the hexagon-head periphery wall, namely in six planes, the intersection of adjacent plane, active force is not born in the neutral position on each plane substantially, foozle due to above-mentioned hexagon-head, outwards heave sometimes at the middle part on six planes, therefore, be stuck on the plane of outwards heaving when spanner after, the active force of rotary spanner can't be applied to the edges and corners of hexagon-head periphery wall again, thereby cause spanner to skid, can't complete the work of tightening.
The model utility content:
The technical problems to be solved in the utility model is, provides a kind of when tightening operation, is difficult for the high-intensity corrosion fastening screw that causes spanner to skid.
Technical solution of the present utility model is, provide a kind of high-intensity corrosion fastening screw with following structure: comprise the head that blocks with the externally threaded body of rod with for spanner, six planes are arranged on the periphery wall of head, six planes surround regular hexagon, wherein, the middle part on six planes is equipped with axial notch.
after adopting above structure, compared with prior art, the utility model high-intensity corrosion fastening screw has the following advantages: outwards heave because foozle causes the middle part on six planes with the head of prior art screw rod, thereby cause the spanner difference of skidding, the utility model high-intensity corrosion fastening screw is equipped with axial notch at the middle part on six planes, therefore, after the manufacturing of the utility model high-intensity corrosion fastening screw is completed, with the phenomenon that does not exist six in-plane outwards to heave, thereby make when screwing up with a wrench the utility model high-intensity corrosion fastening screw people, the active force of rotary spanner will be concentrated in the edges and corners on the head periphery wall, avoided spanner to skid.
Description of drawings:
Fig. 1 is the stereochemical structure profile schematic diagram of the utility model high-intensity corrosion fastening screw.
Embodiment:
Below in conjunction with the drawings and specific embodiments, the utility model high-intensity corrosion fastening screw is described in further detail:
As shown in Figure 1, in this embodiment, the utility model high-intensity corrosion fastening screw comprises the head 1 that blocks with the externally threaded body of rod 4 with for spanner, head 1 is an integral body with the body of rod 4, on the body of rod 4, cover has a packing ring 5, have plane 3,3, six, six planes to surround regular hexagon on the periphery wall of head 1, the middle part on six planes 3 is equipped with axial notch 2.
Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.
Claims (1)
1. high-intensity corrosion fastening screw, comprise the head (1) that blocks with the externally threaded body of rod (4) with for spanner, six planes (3) are arranged on the periphery wall of described head (1), six planes (3) surround regular hexagon, it is characterized in that: the middle part on described six planes (3) is equipped with axial notch (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220753217 CN202971499U (en) | 2012-12-17 | 2012-12-17 | High-strength anti-corrosion fastening screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220753217 CN202971499U (en) | 2012-12-17 | 2012-12-17 | High-strength anti-corrosion fastening screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971499U true CN202971499U (en) | 2013-06-05 |
Family
ID=48512582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220753217 Expired - Lifetime CN202971499U (en) | 2012-12-17 | 2012-12-17 | High-strength anti-corrosion fastening screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971499U (en) |
-
2012
- 2012-12-17 CN CN 201220753217 patent/CN202971499U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NINGBO SHUXIANG NEW MATERIALS CO., LTD. Free format text: FORMER NAME: NINGBO SHUXIANG RAILWAY EQUIPMENT MANUFACTURING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Huamao Industrial Park Yinzhou District Hengjie town Zhejiang city Ningbo province 315181 Patentee after: NINGBO SHUXIANG NEW MATERIAL Co.,Ltd. Address before: 315181 Xu Wang Village, Heng Gang Town, Ningbo, Zhejiang, Yinzhou District Patentee before: Ningbo Shuxiang Railway Equipment Manufacturing Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |