CN203114831U - High strength long-tenon screw - Google Patents
High strength long-tenon screw Download PDFInfo
- Publication number
- CN203114831U CN203114831U CN 201320102819 CN201320102819U CN203114831U CN 203114831 U CN203114831 U CN 203114831U CN 201320102819 CN201320102819 CN 201320102819 CN 201320102819 U CN201320102819 U CN 201320102819U CN 203114831 U CN203114831 U CN 203114831U
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- CN
- China
- Prior art keywords
- screw
- screw rod
- head
- strength
- high strength
- 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 relates to a screw, in particular to a high strength long-tenon screw used for industries such as ships, electric power and chemical engineering. The high strength long-tenon screw comprises a head portion (1) and a threaded rod (2) and is characterized in that a limiting fixing block (3) is arranged on the connecting portion of the head portion (1) and the threaded rod (2); and the outermost portion of one end, provided with threads, of the threaded rod (2) is smooth. The high strength long-tenon screw is convenient to install and detach and high in structural strength.
Description
Technical field
The utility model relates to a kind of screw, relates in particular to a kind of high-strength and long tenon screw for industries such as boats and ships, electric power and chemical engineering industries.
Background technique
In industries such as boats and ships, electric power and chemical engineering industry, use long tenon screw through regular meeting.The long tenon screw of prior art needs the workman with hand steered firmly screw head when assembling, by instrument nut and screw are screwed then, and the workman need hold up screw head always when assembling like this, and is very inconvenient; And the long tenon screw of prior art is when using, and head and screw rod position join strength are not high, disconnect easily, cause long tenon screw damage; And screw portion one end of the long tenon screw of prior art is to connect head; the other end is screwed; and because being provided with screw thread one end, screw rod generally all is arranged on the outside; and do not protect; may cause screw to be provided with the outermost thread damage of screw thread one end because of having used of a specified duration like this, the feasible bad dismounting of long tenon screw.
Summary of the invention
Technological scheme to be solved in the utility model is: the high-strength and long tenon that a kind of installing/dismounting is more convenient and structural strength is high screw is provided.
The technological scheme that the utility model adopts is: a kind of high-strength and long tenon screw, comprise head and screw rod, and described head and screw rod joint are provided with spacing fixed block, and the most external of the threaded end of described screw rod is smooth.
Adopt above structure compared with prior art, the utlity model has following advantage: the joint between head and screw rod arranges one and now is fixed block, so not only can strengthen the join strength between head and the screw rod, and only need stay a restraining groove at the object that presets, so just the spacing fixed block of bolt head can be placed in the restraining groove, so just can utilize the position-limiting action of spacing fixed block, screw nut at the other end by instrument, so just do not need the workman to hold up screw head always, assemble more convenient; And the threaded end most external of screw rod is smooth, and is namely not threaded, also can not influence dismounting even if be arranged on outer surface wear like this.
As preferably, the smooth position of most external of the threaded end of described screw rod is frustoconic shape.Convenient like this with in the corresponding through hole of installing of screw insertion.
As preferably, the ratio of the diameter of described head and the diameter of screw rod is more than or equal to 1.4:1.After adopting this structure, make screw head can satisfy stressed requirement, waste material is not more optimized resource again.
As preferably, described head and screw rod are made by the high tensile steel material.Because screw is to use in industries such as boats and ships, electric power and chemical engineering industry, so it is very high to requirement of strength, just be easy to damage if adopt common material to make, so adopt the high tensile steel material, make whole long tenon screw intensity uprise, increased its working life and reduced potential safety hazard.
Description of drawings
Fig. 1 is the structural representation of the utility model high-strength and long tenon screw.
As shown in the figure: 1, head; 2, screw rod; 3, spacing fixed block.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further, but the utility model is not limited only to following embodiment.
As shown in the figure: a kind of high-strength and long tenon screw, comprise head 1 and screw rod 2, described head 1 and screw rod 2 joints are provided with spacing fixed block 3, and the most external of described screw rod 2 threaded ends is smooth.The most external of described screw rod 2 threaded ends is that the smooth most external that refers to screw rod 2 threaded ends is not threaded.
The smooth position of most external of described screw rod 2 threaded ends is frustoconic shape.
The ratio of the diameter of the diameter of described head 1 and screw rod 2 is more than or equal to 1.4:1.The described ratio of this specific embodiment is 1.5:1.
Described head 1 is made by the high tensile steel material with screw rod 2.Described high tensile steel material refers to 40 boron steels, 20 manganese titanium boron steels, No. 45 steel or 35CrMoA.These steel material all are that intensity is higher, can meet the requirement of industries such as boats and ships, electric power and chemical engineering industry.
Claims (4)
1. a high-strength and long tenon screw comprises head (1) and screw rod (2), it is characterized in that: described head (1) and screw rod (2) joint are provided with spacing fixed block (3), and the most external of the threaded end of described screw rod (2) is smooth.
2. high-strength and long tenon screw according to claim 1, it is characterized in that: the smooth position of most external of the threaded end of described screw rod (2) is frustoconic shape.
3. high-strength and long tenon screw according to claim 1, it is characterized in that: the ratio of the diameter of the diameter of described head (1) and screw rod (2) is more than or equal to 1.4:1.
4. high-strength and long tenon screw according to claim 1 is characterized in that: described head (1) is made by the high tensile steel material with screw rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320102819 CN203114831U (en) | 2013-03-07 | 2013-03-07 | High strength long-tenon screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320102819 CN203114831U (en) | 2013-03-07 | 2013-03-07 | High strength long-tenon screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114831U true CN203114831U (en) | 2013-08-07 |
Family
ID=48895181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320102819 Expired - Fee Related CN203114831U (en) | 2013-03-07 | 2013-03-07 | High strength long-tenon screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114831U (en) |
-
2013
- 2013-03-07 CN CN 201320102819 patent/CN203114831U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20140307 |