CN2245127Y - Steel head iron skirt combined piston for diesel engine - Google Patents
Steel head iron skirt combined piston for diesel engine Download PDFInfo
- Publication number
- CN2245127Y CN2245127Y CN95213970U CN95213970U CN2245127Y CN 2245127 Y CN2245127 Y CN 2245127Y CN 95213970 U CN95213970 U CN 95213970U CN 95213970 U CN95213970 U CN 95213970U CN 2245127 Y CN2245127 Y CN 2245127Y
- Authority
- CN
- China
- Prior art keywords
- piston
- skirt
- diesel engine
- combined
- utility
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a steel head iron skirt combined piston for a diesel engine, which is used for internal combustion locomotive 240 serial diesel engines. The utility model aims to solve the problem of mild wear of supporting surfaces of a piston top and a piston skirt resulted from relative slip between the piston top and the piston skirt during the operation of a combined piston. In order to solve the problem, the piston skirt and the piston top are connected with a main supporting surface which is designed into a flat conical surface. The utility model solves the problem, improves reliability of the combined piston, and extends the service life of the combined piston.
Description
The utility model relates to a kind of steel head iron skirt combined piston, particularly internal combustion locomotive 240 serial diesel engine steel head iron skirt combined pistons
Known 240 serial diesel engine combined pistons, as combination of steel roof aluminum piston skirt, and Chinese patent ZL92235789.7 " diesel engine steel head iron skirt combined piston ", piston is a fabricated structure, it mainly is made up of piston head and piston skirt, connecting bolt, is the plane and piston head is connected main supporting surface with piston skirt.This structure is very unreasonable, piston at work, high gaseous-pressure will cause slide relative between piston head and the piston skirt, this slip can cause this two parts carry faces fretting, when load surpassed design limit, this wearing and tearing can cause that piston structure and connecting bolt damage.
The purpose of this utility model is in order to overcome the deficiency of prior art, a kind of improved steel head iron skirt combined piston to be provided, and it can prevent piston skirt, the wearing and tearing of piston head junction surface, avoids piston and connecting bolt to destroy.
The purpose of this utility model is achieved in that the main supporting surface that piston skirt is connected with piston head is processed into the flat conical surface that slopes down to the outside from the inboard, and the conical surface and the datum plane discrepancy in elevation are 0.018～0.05mm.Like this, after piston skirt and the piston head assembling, make former piston skirt, piston head connect main supporting surface and disengage, destroy thereby overcome two contact surface abrasion and piston and connecting bolt.
Figure (one) is a longitudinal sectional view of the present utility model
Figure (two) is the longitudinal sectional view of the utility model parts piston skirt
Below in conjunction with accompanying drawing and present embodiment the utility model is further described.
Shown in figure (), the utility model is made up of piston head [1] and piston skirt [4] etc., because piston skirt is connected main supporting surface with piston head is a conical surface, therefore, after piston head and the piston skirt assembling, make former piston skirt, piston head connect main supporting surface and disengage, thereby overcome the wearing and tearing that two surface of contact bring because of slip.
Shown in figure (two), piston skirt [4] is connected main supporting surface [6] and is processed into the flat conical surface that slopes down to the outside from the inboard with piston head [1], and the conical surface and the datum plane discrepancy in elevation are 0.018～0.05mm.
The utility model is processed into a flat conical surface because only need that piston skirt is connected main supporting surface with piston head, so structure is simple especially.Compared with prior art, the beneficial effects of the utility model are: overcome piston head [1] and caused two parts damages with piston skirt [4] surface of contact slide relative, prevention piston and connecting bolt destroy, thereby have improved the reliability of steel head iron skirt combined piston and prolonged piston working life.
Claims (2)
1. diesel engine steel head iron skirt combined piston, it mainly is made up of piston head [1], piston skirt [4], it is characterized in that: piston skirt [4] is connected main supporting surface for slope down to the flat conical surface in the outside from the inboard with piston head [1].
2. diesel engine steel head iron skirt combined piston as claimed in claim 1 is characterized in that: the flat conical surface and the datum plane discrepancy in elevation that piston skirt [4] is connected with piston head [1] are 0.018～0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95213970U CN2245127Y (en) | 1995-06-06 | 1995-06-06 | Steel head iron skirt combined piston for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95213970U CN2245127Y (en) | 1995-06-06 | 1995-06-06 | Steel head iron skirt combined piston for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2245127Y true CN2245127Y (en) | 1997-01-15 |
Family
ID=33863711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95213970U Expired - Fee Related CN2245127Y (en) | 1995-06-06 | 1995-06-06 | Steel head iron skirt combined piston for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2245127Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032196A (en) * | 2012-12-21 | 2013-04-10 | 中国兵器工业集团第七0研究所 | Combined piston with built-in piston pin |
| CN107524542A (en) * | 2017-09-04 | 2017-12-29 | 常州中车柴油机零部件有限公司 | A kind of diesel engine composite piston |
-
1995
- 1995-06-06 CN CN95213970U patent/CN2245127Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032196A (en) * | 2012-12-21 | 2013-04-10 | 中国兵器工业集团第七0研究所 | Combined piston with built-in piston pin |
| CN107524542A (en) * | 2017-09-04 | 2017-12-29 | 常州中车柴油机零部件有限公司 | A kind of diesel engine composite piston |
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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 |