CN203051443U - Anticorrosive high-strength bolt - Google Patents
Anticorrosive high-strength bolt Download PDFInfo
- Publication number
- CN203051443U CN203051443U CN 201220628295 CN201220628295U CN203051443U CN 203051443 U CN203051443 U CN 203051443U CN 201220628295 CN201220628295 CN 201220628295 CN 201220628295 U CN201220628295 U CN 201220628295U CN 203051443 U CN203051443 U CN 203051443U
- Authority
- CN
- China
- Prior art keywords
- bolt
- bolt head
- screw rod
- dovetail groove
- protection cap
- 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 - Fee Related
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Abstract
The utility model discloses an anticorrosive high-strength bolt which comprises a bolt head, a screw rod and a protection cap, wherein a dovetail groove is formed in the upper end surface of the bolt head; a trapezoidal clamping block matched with the dovetail groove is formed in the top of the protection cap; a flange extending outwards is arranged on the edge of the protection cap; the protection cap is arranged on the bolt head by matching the clamping block with the dovetail groove; an arc connecting part is arranged at the connected part of the upper end of the screw rod and the bolt head; a polished rod section is arranged at the upper end of the screw rod; and a thread section is arranged at the lower end of the screw rod. The anticorrosive high-strength bolt disclosed by the utility model is simple in structure; due to the adoption of the design that the protection cap is arranged on the bolt head, the corrosion influence on the bolt due to the contact of corrosive gas or liquid with the bolt is effectively prevented and the anticorrosive performance of the bolt is improved; and due to the adoption that the arc connecting part is arranged at the connected part between the upper end of the screw rod and the bolt head, a stress concentrated point is eliminated, the mechanical strength of the bolt is effectively improved and the service life of the bolt is prolonged.
Description
Technical field
The utility model relates to a kind of mechanical fastener, is specially a kind of corrosion protection high-strength bolt.
Background technique
Bolt is one of modal fastening piece, and it is made up of head and screw rod.It is cylindric that screw rod is, on have outside thread and can use with nut collocation.Screw bolt and nut uses jointly, can connect and fix two parts that have through hole.Existing bolt is applied in when having corrosive operational site, it is more serious that it is influenced by corrosion, make bolt failure, can't reach fastening effect, and then influence the use safety of equipment, and the joint of the bolt head of conventional bolt and screw rod is the right angle, stress is comparatively concentrated when stressed, crack because of fatigue easily and then rupture, so intensity is not good, the life-span is short.
The model utility content
The purpose of this utility model provides a kind of corrosion protection high-strength bolt, be applied in when having corrosive operational site to solve in the prior art traditional bolt, it is more serious that it is influenced by corrosion, make to reach fastening effect by bolt failure, and the joint of the bolt head of conventional bolt and screw rod is the right angle, stress is comparatively concentrated when stressed, crack because of fatigue easily and then rupture, intensity is not good, the problem that the life-span is short.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of corrosion protection high-strength bolt, it is characterized in that: include bolt head, screw rod and protective hat, described bolt head upper-end surface is provided with dovetail groove, described protective hat inner top is provided with the trapezoidal fixture block that matches with dovetail groove, described protective hat edge is provided with the rib of outside extension, and described protective hat cooperates with dovetail groove by fixture block and is installed on the bolt head, and described screw rod upper end is provided with the arc joint with the joint of bolt head, described screw rod upper end is the polished rod section, and the lower end is thread section.
Described a kind of corrosion protection high-strength bolt is characterized in that: described protective hat adopts corrosion resistant plastics to make.
Described a kind of corrosion protection high-strength bolt is characterized in that: described bolt head is cylindrical no bevel bolt head.
The beneficial effects of the utility model are:
The utility model is simple in structure, easy to install, employing arranges protective hat at bolt head, and the design of rib is set at the protective hat edge, prevented corrosive gas or liquid from contacting with bolt effectively and bolt has been caused corrosion influence, promote the antiseptic property of bolt, guaranteed the safe operation of equipment; Employing arranges the design of arc joint in screw rod upper end and the joint of bolt head, eliminated stress concentration point, has effectively promoted the mechanical strength of bolt, has prolonged working life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of corrosion protection high-strength bolt, include bolt head 1, screw rod 2 and protective hat 3, bolt head 1 upper-end surface is provided with dovetail groove 4, and protective hat 3 inner tops are provided with the trapezoidal fixture block 5 that matches with dovetail groove 4, and protective hat 3 edges are provided with the rib 6 of outside extension, protective hat 3 cooperates with dovetail groove 4 by fixture block 5 and is installed on the bolt head 1, the joint of screw rod 2 upper ends and bolt head 1 is provided with arc joint 7, and screw rod 2 upper ends are polished rod section 8, and the lower end is thread section 9.
Claims (3)
1. corrosion protection high-strength bolt, it is characterized in that: include bolt head, screw rod and protective hat, described bolt head upper-end surface is provided with dovetail groove, described protective hat inner top is provided with the trapezoidal fixture block that matches with dovetail groove, described protective hat edge is provided with the rib of outside extension, and described protective hat cooperates with dovetail groove by fixture block and is installed on the bolt head, and described screw rod upper end is provided with the arc joint with the joint of bolt head, described screw rod upper end is the polished rod section, and the lower end is thread section.
2. a kind of corrosion protection high-strength bolt according to claim 1, it is characterized in that: described protective hat adopts corrosion resistant plastics to make.
3. a kind of corrosion protection high-strength bolt according to claim 1, it is characterized in that: described bolt head is cylindrical no bevel bolt head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220628295 CN203051443U (en) | 2012-11-25 | 2012-11-25 | Anticorrosive high-strength bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220628295 CN203051443U (en) | 2012-11-25 | 2012-11-25 | Anticorrosive high-strength bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203051443U true CN203051443U (en) | 2013-07-10 |
Family
ID=48734401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220628295 Expired - Fee Related CN203051443U (en) | 2012-11-25 | 2012-11-25 | Anticorrosive high-strength bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203051443U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224346A (en) * | 2016-08-25 | 2016-12-14 | 安徽六方重联机械股份有限公司 | A kind of anticorrosion bolt |
-
2012
- 2012-11-25 CN CN 201220628295 patent/CN203051443U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224346A (en) * | 2016-08-25 | 2016-12-14 | 安徽六方重联机械股份有限公司 | A kind of anticorrosion bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20131125 |