CN201288743Y - Hexagonal flange face torsion shear type high tensile bolt - Google Patents
Hexagonal flange face torsion shear type high tensile bolt Download PDFInfo
- Publication number
- CN201288743Y CN201288743Y CNU2008200417927U CN200820041792U CN201288743Y CN 201288743 Y CN201288743 Y CN 201288743Y CN U2008200417927 U CNU2008200417927 U CN U2008200417927U CN 200820041792 U CN200820041792 U CN 200820041792U CN 201288743 Y CN201288743 Y CN 201288743Y
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- CN
- China
- Prior art keywords
- bolt
- head
- turret head
- type high
- shear type
- 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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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to a hexagonal flange torsional shear-type high-strength bolt, which solves the problems that the prior bolt needs special electric wrench for installation, slippage is easy to produce in the screwing process, actual torque of the bolt can not be checked after the wobbler is cut off. The utility model comprises a bolt, one end of the bolt shank is a large turret head which is internally connected with a round flange, the other end of the bolt shank is connected with a small turret head, the cross section of the large turret head and the small turret head are all regular hexagon, and a groove is arranged between the small turret head and the bolt shank. When the applied torque reaches a certain value, the small turret head can be twisted off automatically, the pre-tightening force can meet the requirements, and the nut is screwed up. In case the bolt can not be installed as a result that slippage is produced in the screwing process, or the special electric wrench can not be used, other wrench can be used for installation. After installation, if the required pre-tightening force is not achieved, a constant-torque wrench for the large turret head can be used for re-screwing.
Description
Technical field
The utility model relates to steel structure torque-shear type high-strength bolt.
Background technique
At present, domesticly be widely used in industry and be connected with civil building, bridge, pylon, support of pipelines, Hoisting Machinery and other steel structure frictionals and all adopt steel structure with big hex head bolt auxiliary connection of high strength and steel structure usefulness torque-shear type high-strength bolt auxiliary connection.
Steel structure is made up of a bolt, a nut and a pad with torque-shear type high-strength bolt auxiliary connection.The NBS code name is GB/T3632-3633.Wherein a mushroom head and a wabbler at bolt difference bolt shank two ends are formed, and there is a groove wabbler and bolt shank joint.Owing to have a wabbler, need with special-purpose electric wrench, but the single face construction, easy construction.When the moment of torsion that applies reached certain numerical value, wabbler can be twisted into two parts automatically, and show promptly that pretightening force has reached requirement this moment, and whether nut is tightened, can check the quality of assembling qualified so intuitively, and can avoid twisting and leak and twist.But there are other defectives in this torque-shear type high-strength bolt: 1. must use special-purpose electric wrench to install; 2. because wabbler is 12 angles, and the groove between angle and the angle is more shallow, in executing the process of twisting, skid easily, just can't install in case skid.3. because the temperature of job site, the quality and the length of resting period of bolt phospholeumization all can make torque coefficient change, thereby the pretightening force that is difficult to guarantee institute's construction bolt under different areas, different weather is certain; 4. can't after cutting off, wabbler reexamine the actual torque of bolt.
Steel structure is made up of a bolt, a nut and two pads with the big hex head bolt auxiliary connection of high strength.The NBS code name is GB/T1228-1231.Installation adopts wrest fixing spanner to carry out, and can accurately guarantee simultaneously, to carry out again the moment of torsion that will reach stubborn when owing to twist.But also have following shortcoming: 1. in work progress, whether bolt installs, and checks not intuitively, is easy to generate Lou and twists, to cross and twist or owe stubborn, must selective examination is multiple twists; 2. necessary two-sided construction, the place turnover is slow.
Summary of the invention
In order to solve the problem that above-mentioned existing torque-shear type high-strength bolt exists, the utility model provides a kind of hexagonal flanged surface torque-shear type high-strength bolt.
Structural design scheme of the present utility model is such:
Hexagonal flanged surface torque-shear type high-strength bolt comprises bolt, and an end of bolt shank is a bolt head, and the other end is connecting the twisting head, is provided with a groove between described twisting head and the screw rod;
Described bolt head is big hexagon head, and big hexagon head inboard is connecting the circular flange face, and the cross section of big hexagon head is a regular hexagon;
Described twisting head is little hexagon head, and the cross section of little hexagon head is a regular hexagon.
The utility model is in construction and installation, and when the moment of torsion that applies reached certain numerical value, little hexagon head can be twisted into two parts automatically, and show promptly that pretightening force has reached requirement this moment, and nut is tightened.In case in executing the process of twisting, occur skidding, can't install; When perhaps not having special electric spanner temporarily, available other spanner is installed.After installing, during reinspection, when not reaching required pretightening force, because the existence of big hexagon head can also be carried out twisting again with wrest fixing spanner.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is the A-A sectional view of Fig. 1,
Fig. 3 uses erection drawing for the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Referring to Fig. 1 and Fig. 2, hexagonal flanged surface torque-shear type high-strength bolt comprises bolt, and an end of bolt shank 3 is a bolt head, and bolt head is big hexagon head 1, and big hexagon head 1 inboard is connecting circular flange face 2, and the cross section of big hexagon head 1 is a regular hexagon; The other end is connecting the twisting head, and the twisting head is little hexagon head 5, and the cross section of little hexagon head 5 is a regular hexagon, is provided with a groove, 4 between twisting head and the bolt shank 3.During installation, when moment of torsion reached certain numerical value on being applied to bolt, little hexagon head 5 disconnected from bolt shank 3 at these groove 4 places, and at this moment, nut is tightened, reaches needed moment of torsion.
Referring to Fig. 2, the utility model hexagonal flanged surface torque-shear type high-strength bolt cooperates with packing ring 6 and nut 7 forms auxiliary connection.This auxiliary connection manufacturing, installation method and GB steel structure are identical with torque-shear type high-strength bolt auxiliary connection.
When assembling, with auxiliary connection will be fixed workpiece clamp and big the hexagon head flanged surface 2 and packing ring 6 that are connected as a single entity between, tighten with special electric spanner, when the moment of torsion that applies reaches certain numerical value, little hexagon head 5 can be twisted into two parts automatically, and show promptly that pretightening force has reached requirement this moment, and nut is tightened.Because the existence of little hexagon head in case occur skidding in executing the process of twisting, can't be installed; When perhaps not having the special electric wrench temporarily, also available other spanner is installed.Because the existence of big hexagon head 1, after installing, during reinspection, when not reaching required pretightening force, can also carry out twisting again with wrest fixing spanner.
Claims (1)
1, hexagonal flanged surface torque-shear type high-strength bolt comprises bolt, and an end of bolt shank is a bolt head, and the other end is connecting the twisting head, is provided with a groove between described twisting head and the screw rod, it is characterized in that:
Described bolt head is big hexagon head, and big hexagon head inboard is connecting the circular flange face, and the cross section of big hexagon head is a regular hexagon;
Described twisting head is little hexagon head, and the cross section of little hexagon head is a regular hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200417927U CN201288743Y (en) | 2008-09-03 | 2008-09-03 | Hexagonal flange face torsion shear type high tensile bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200417927U CN201288743Y (en) | 2008-09-03 | 2008-09-03 | Hexagonal flange face torsion shear type high tensile bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201288743Y true CN201288743Y (en) | 2009-08-12 |
Family
ID=40980424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200417927U Expired - Fee Related CN201288743Y (en) | 2008-09-03 | 2008-09-03 | Hexagonal flange face torsion shear type high tensile bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201288743Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748360A (en) * | 2012-07-10 | 2012-10-24 | 航天精工有限公司 | High-locking bolt provided with groove end as well as processing method and roller thereof |
-
2008
- 2008-09-03 CN CNU2008200417927U patent/CN201288743Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748360A (en) * | 2012-07-10 | 2012-10-24 | 航天精工有限公司 | High-locking bolt provided with groove end as well as processing method and roller thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20160903 |