CN201209612Y - Cylinder cap bolt - Google Patents
Cylinder cap bolt Download PDFInfo
- Publication number
- CN201209612Y CN201209612Y CNU2008200242797U CN200820024279U CN201209612Y CN 201209612 Y CN201209612 Y CN 201209612Y CN U2008200242797 U CNU2008200242797 U CN U2008200242797U CN 200820024279 U CN200820024279 U CN 200820024279U CN 201209612 Y CN201209612 Y CN 201209612Y
- Authority
- CN
- China
- Prior art keywords
- screw
- screw rod
- screw thread
- cylinder head
- proved
- 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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- Forging (AREA)
Abstract
The utility model discloses a cylinder cover bolt, wherein, the top end of one end of a screw is provided with a hexagonal head; the hexagonal head is connected with a ring flange; the bottom of the ring flange is connected with the screw through a supporting face; the bottom of the screw is provided with screw thread; one end of the screw thread is provided with a chamfer angle; and the middle part of the screw is further provided with a plurality of circular bulges. The outline dimension and geometrical shape of the cylinder cover bolt are proved to be reasonable, and over-all properties index is proved to be good during assembly verification.
Description
Technical field
The utility model relates to a kind of bolt of fastening cylinder head.
Background technique
Cylinder head bolt is used for fastening cylinder head, and its performance directly influences the quality of whole motor.Steyr Europe III motor adopted in the past external import with cylinder head bolt, but external import has a lot of inconvenience: the one, and it is untimely supply, and the 2nd, the difficult coordination of quality problems, the 3rd, cost an arm and a leg, unreasonable structure etc.
Summary of the invention
For avoiding above drawback, the utility model has been developed this cylinder head bolt and has been improved deficiency in the past.
Cylinder head bolt is provided with one or six square toes at an end top of screw rod, and six square toes are connected with flange plate, the bottom of flange plate is connected with screw rod by supporting surface, bottom at screw rod is provided with screw thread, and an end of screw thread is provided with chamfering, and the intermediate portion of screw rod also is provided with the projection of a plurality of circles.
Cylinder head bolt adopts the special steel manufacturing, the external dimension at each position, geometrical shape require relatively uniqueness according to user mode, mechanical property, surface quality are adapted to working environment, bolt is rough forging under specific temperature, improve tissue through Overheating Treatment then, high-accuracy machine tool mechanical processing, the centre is heat treatment repeatedly, carries out surface treatment at last.Tolerance of size, surface quality are strict, and comprehensive mechanical performance requires high.
The characteristics of cylinder head bolt:
1, workpiece is worked under yield situation.
2, special, each position tolerance strictness of surface configuration.
3, core is organized strictly, and surface quality requires high, and workpiece is worked under the alternation active force.Workpiece antifatigue damage capability is eager to excel, and the assembling moment of torsion will be fit to its working state.
Description of drawings
Now the utility model is described in further detail in conjunction with the accompanying drawings
Fig. 1 is the utility model overall structure schematic representation
Fig. 2 is the utility model A portion enlarged view
Fig. 3 is the utility model plan view
Among the figure 1, screw rod 2, screw thread 3, chamfering 4, six square toes 5, flange plate 6, supporting surface 7, projection
Embodiment
As shown in Figure 1, 2, 3, end top at screw rod 1 is provided with one or six square toes 4, six square toes 4 are connected with flange plate 5, the bottom of flange plate 5 is connected with screw rod 1 by supporting surface 6, be provided with screw thread 2 in the bottom of screw rod 1, one end of screw thread 2 is provided with chamfering 3, and the intermediate portion of screw rod 1 also is provided with the projection 7 of a plurality of circles.
Steyr Europe III motor provides guarantee with the unique texture of cylinder head bolt and inherent technical order for the performance of whole motor, the special shape of head both had been adapted to cold worked needs in enormous quantities, guaranteed the moment of torsion of assembling again, under the effect of alternating force, be unlikely to loosening; The geometrical shape of bar portion had both helped guiding, location, helped changing the stressed position of bar portion again; Accuracy of thread requires to play the locking effect.Reasonable by installation this cylinder head bolt boundary dimension of checking and geometry design, integrated performance index is good.
Claims (1)
1, cylinder head bolt, it is characterized in that: the end top at screw rod is provided with one or six square toes, six square toes are connected with flange plate, the bottom of flange plate is connected with screw rod by supporting surface, bottom at screw rod is provided with screw thread, one end of screw thread is provided with chamfering, and the intermediate portion of screw rod also is provided with the projection of a plurality of circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200242797U CN201209612Y (en) | 2008-06-20 | 2008-06-20 | Cylinder cap bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200242797U CN201209612Y (en) | 2008-06-20 | 2008-06-20 | Cylinder cap bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209612Y true CN201209612Y (en) | 2009-03-18 |
Family
ID=40480346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200242797U Expired - Fee Related CN201209612Y (en) | 2008-06-20 | 2008-06-20 | Cylinder cap bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209612Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493996A (en) * | 2011-12-20 | 2012-06-13 | 重庆长安汽车股份有限公司 | Special-shaped assembly bolt |
| CN103742502A (en) * | 2013-12-31 | 2014-04-23 | 广西玉柴机器股份有限公司 | Cylinder cover bolt |
| CN103758840A (en) * | 2013-12-31 | 2014-04-30 | 广西玉柴机器股份有限公司 | High-strength bolt |
-
2008
- 2008-06-20 CN CNU2008200242797U patent/CN201209612Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493996A (en) * | 2011-12-20 | 2012-06-13 | 重庆长安汽车股份有限公司 | Special-shaped assembly bolt |
| CN103742502A (en) * | 2013-12-31 | 2014-04-23 | 广西玉柴机器股份有限公司 | Cylinder cover bolt |
| CN103758840A (en) * | 2013-12-31 | 2014-04-30 | 广西玉柴机器股份有限公司 | High-strength bolt |
| CN103758840B (en) * | 2013-12-31 | 2016-02-24 | 广西玉柴机器股份有限公司 | High-strength 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: 20090318 Termination date: 20100620 |