CN2235523Y - High-strength bolt - Google Patents
High-strength bolt Download PDFInfo
- Publication number
- CN2235523Y CN2235523Y CN 95243781 CN95243781U CN2235523Y CN 2235523 Y CN2235523 Y CN 2235523Y CN 95243781 CN95243781 CN 95243781 CN 95243781 U CN95243781 U CN 95243781U CN 2235523 Y CN2235523 Y CN 2235523Y
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- screw rod
- cylindrical tank
- small cylindrical
- 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
Links
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a high strength bolt, including the nut, with the perpendicular screw rod of being connected of nut, be equipped with the little circular slot of round in the junction with the screw rod on the nut. The stress concentration part can be eliminated under the conditions of not increasing the production cost, not increasing the process links and not influencing the installation and the use, thereby greatly improving the strength of the bolt.
Description
The utility model is the bolt after a kind of the improvement.
Bolt is a kind of general fastening piece, and its user mode normally is subjected to stretching action, under the effect of pulling force, usually can rupture because of fatigue cracks.It is again a kind of standard piece, is the right angle in the joint of its nut and screw rod, and therefore, this place also is the most concentrated place of stress, i.e. the poorest place of intensity, and bolt fracture also just often occurs in this place, thereby has influenced the intensity of whole bolt.
The purpose of this utility model is: a kind of high-strength bolt is provided, and it only needs to make improvements slightly on existing bolt, and the intensity of bolt is improved greatly.
The technical solution of the utility model is: a kind of high-strength bolt, comprise nut, with nut screw rod connected vertically, be provided with a circle small cylindrical tank on the described nut in joint with screw rod.
Further technological scheme of the present utility model is: a kind of high-strength bolt, comprise nut, with nut screw rod connected vertically, be provided with a circle small cylindrical tank on the described nut in joint with screw rod; The cross section of described small cylindrical tank is a semicircle, and tangent with the bus of the external diameter of screw rod; The diameter of described small cylindrical tank is less than half of the pitch of screw rod.
The utility model has the advantages that:
1. because the utility model with the joint of nut on the bolt and screw rod, is connected by right angle connection becoming circular arc, eliminated stress concentration point, make whole bolt under the effect of pulling force, no one is special weakness, thereby has increased the intensity of bolt, has prolonged the working life of bolt.
2. consider that bolt is encased inside packing ring or the like factor when mounted possibly, the diameter of small cylindrical tank is decided to be less than pitch half, so this bolt can not be affected in use.
3. though this high-strength bolt has structurally been done improvement to existing bolt, but its production technology is also also uncomplicated, because after existing bolt is blank process cold-heading or hot pressing, thread rolling is made, so as long as when cold-heading or hot pressed nut, small cylindrical tank is shaped simultaneously to get final product, and can not increase cost of production, and the intensity of bolt can improve greatly.
Below in conjunction with drawings and Examples the utility model is further retouched:
Fig. 1 is a plan view of the present utility model;
Fig. 2 is a left view of the present utility model.
Wherein: 1. nut; 2. screw rod; 3. small cylindrical tank.
Embodiment: as shown in Figure 1 and Figure 2, a kind of high-strength bolt, comprise nut 1, with nut 1 screw rod 2 connected vertically, be provided with a circle small cylindrical tank 3 on the described nut 1 in joint with screw rod 2; The cross section of described small cylindrical tank 3 is a semicircle, and tangent with the bus of the external diameter of screw rod 2; The diameter of described small cylindrical tank 3 is less than half of the pitch of screw rod 2.Because the utility model with the joint of the nut on the bolt 1 with screw rod 2, is connected by right angle connection becoming circular arc, has eliminated stress concentration point, make whole bolt under the effect of pulling force, no one is special weakness, thereby has increased the intensity of bolt, has prolonged the working life of bolt; Consider that bolt is encased inside packing ring or the like factor when mounted possibly, the diameter of small cylindrical tank 3 is decided to be less than pitch half, so this bolt can not be affected in use; Though this high-strength bolt has structurally been done improvement to existing bolt, but its production technology is also also uncomplicated, because after existing bolt is blank process cold-heading or hot pressing, thread rolling is made, so as long as when cold-heading or hot pressed nut 1, small cylindrical tank 3 is shaped simultaneously to get final product, and can not increase cost of production, and the intensity of bolt can improve greatly.
Claims (3)
1. high-strength bolt, comprise nut 1, with nut 1 screw rod 2 connected vertically, it is characterized in that: be provided with a circle small cylindrical tank 3 on the described nut 1 in joint with screw rod 2.
2. high-strength bolt according to claim 1 is characterized in that: the cross section of described small cylindrical tank 3 is a semicircle, and tangent with the bus of the external diameter of screw rod 3.
3. high-strength bolt according to claim 1 is characterized in that: the diameter of described small cylindrical tank 3 is less than half of the pitch of screw rod 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95243781 CN2235523Y (en) | 1995-04-14 | 1995-04-14 | High-strength bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95243781 CN2235523Y (en) | 1995-04-14 | 1995-04-14 | High-strength bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2235523Y true CN2235523Y (en) | 1996-09-18 |
Family
ID=33884306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95243781 Expired - Fee Related CN2235523Y (en) | 1995-04-14 | 1995-04-14 | High-strength bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2235523Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890618A (en) * | 2010-06-17 | 2010-11-24 | 鹏驰五金制品有限公司 | Processing method of high-strength bolts |
-
1995
- 1995-04-14 CN CN 95243781 patent/CN2235523Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890618A (en) * | 2010-06-17 | 2010-11-24 | 鹏驰五金制品有限公司 | Processing method of high-strength bolts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |