CN2888157Y - Main bearing bolt for engine - Google Patents
Main bearing bolt for engine Download PDFInfo
- Publication number
- CN2888157Y CN2888157Y CN 200620080670 CN200620080670U CN2888157Y CN 2888157 Y CN2888157 Y CN 2888157Y CN 200620080670 CN200620080670 CN 200620080670 CN 200620080670 U CN200620080670 U CN 200620080670U CN 2888157 Y CN2888157 Y CN 2888157Y
- Authority
- CN
- China
- Prior art keywords
- main bearing
- motor
- transition part
- transversal
- bar portion
- 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 - Lifetime
Links
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a bolt for main bearing of motor, comprises thread part and rod part, a transition part is arranged between the thread part and rod part, compared with any two transversal rounds of the transition part, the semidiameter of transversal round near thread part is greater than semidiameter of transversal round near rod part. The turning generatrix of transition part can be a straight line or a circular line. With the condition of not changing the sizes of rod part and thread part, the tensile strength of main bearing bolt is reinforced, the motor reliability is improved and the performance can bear the high explosion pressure of EUROIII motor.
Description
Technical field
The utility model relates to technical field of engines, relates in particular to a kind of bolt that is used to connect main bearing of engine.
Background technique
Known Main bearing bolt, comprise a head, a bar portion and a screw section, transition part between described screw section and the bar portion be one to the recessed tool withdrawal groove of axial direction, the thinnest part in the most recessed just whole bolt of part of this tool withdrawal groove, become the weakest link in the whole bolt, the evidence Main bearing bolt is often in tool withdrawal groove the thinnest place fracture.Especially for Europe III motor, it will produce the pressure of explosion higher than common engine in the process of work, and common Main bearing bolt is difficult to carry big like this because the pulling force that pressure of explosion passed over, thereby can influence the reliability of motor.
The model utility content
Technical problem to be solved in the utility model is: a kind of Main bearing bolt that is used for motor is provided, and low to solve its tensile strength, influence the technical problem of engine reliability.
For solving the problems of the technologies described above, the technical solution of the utility model is: the Main bearing bolt that is used for motor, comprise screw section and bar portion, has transition part between described screw section and the bar portion, any two transversal circles of described transition part are compared, and the transversal circle radius of close screw section is greater than the transversal circle radius near bar portion.
The revolution bus of described transition part can be a straight line, also can be a circular arc line.
Because any two transversal circles of described transition part are compared, the transversal circle radius of close screw section is greater than the transversal circle radius near bar portion, so, the transversal circle radius of any one of the transition part all transversal circle radius than bar portion is big, under all constant situation of bar portion and screw section size, improved the tensile strength of Main bearing bolt, strengthened the reliability of motor, its performance can be carried the high pressure of explosion of Europe III motor fully.
As a kind of improvement, described transition part respectively with screw section and bar portion arc transition.Its effect is to remove corner angle, reduces stress and concentrates.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is the utility model embodiment's a structure front view.
Embodiment
The Main bearing bolt that is used for motor, as shown in the figure, comprise screw section 4 and bar portion 2, have transition part 3 between described screw section 4 and the bar portion 2, any two transversal circles of described transition part 3 are compared, and the transversal circle radius of close screw section 4 is greater than the transversal circle radius near bar portion 2.The revolution bus of described transition part can be a straight line, also can be a circular arc line.Described transition part 3 respectively with screw section 4 and bar portion 2 arc transition.
The utility model has improved the tensile strength of Main bearing bolt under all constant situation of bar portion and screw section size, strengthened the reliability of motor, and its performance can be carried the high pressure of explosion of Europe III motor fully.
Claims (4)
1, the Main bearing bolt that is used for motor, comprise screw section (4) and bar portion (2), has transition part (3) between described screw section (4) and the bar portion (2), it is characterized in that: any two transversal circles of described transition part (3) are compared, and the transversal circle radius of close screw section (4) is greater than the transversal circle radius near bar portion (2).
2, the Main bearing bolt that is used for motor as claimed in claim 1 is characterized in that: the revolution bus of described transition part (3) is a straight line.
3, the Main bearing bolt that is used for motor as claimed in claim 1 is characterized in that: the revolution bus of described transition part (3) is a circular arc line.
4, as claim 1 or the 2 or 3 described Main bearing bolts that are used for motor, it is characterized in that: described transition part (3) respectively with screw section (4) and bar portion (2) arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080670 CN2888157Y (en) | 2006-01-25 | 2006-01-25 | Main bearing bolt for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080670 CN2888157Y (en) | 2006-01-25 | 2006-01-25 | Main bearing bolt for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2888157Y true CN2888157Y (en) | 2007-04-11 |
Family
ID=38046727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620080670 Expired - Lifetime CN2888157Y (en) | 2006-01-25 | 2006-01-25 | Main bearing bolt for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2888157Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854480A (en) * | 2019-03-25 | 2019-06-07 | 广州万宝集团压缩机有限公司 | Stator component connection structure and compressor |
-
2006
- 2006-01-25 CN CN 200620080670 patent/CN2888157Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854480A (en) * | 2019-03-25 | 2019-06-07 | 广州万宝集团压缩机有限公司 | Stator component connection structure and compressor |
| CN109854480B (en) * | 2019-03-25 | 2020-10-27 | 广州万宝集团压缩机有限公司 | Stator part connecting structure and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070411 |
|
| EXPY | Termination of patent right or utility model |