CN203374379U - Abrasion-resisting piston ring - Google Patents
Abrasion-resisting piston ring Download PDFInfo
- Publication number
- CN203374379U CN203374379U CN201320503315.9U CN201320503315U CN203374379U CN 203374379 U CN203374379 U CN 203374379U CN 201320503315 U CN201320503315 U CN 201320503315U CN 203374379 U CN203374379 U CN 203374379U
- Authority
- CN
- China
- Prior art keywords
- piston ring
- abrasion
- main body
- ring body
- annular groove
- 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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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses an abrasion-resisting piston ring which comprises a piston ring body arranged inside a piston ring groove. An annular groove is formed in the inner circumferential face of the piston ring body, a plurality of supporting parts are arranged inside the annular groove, the surface of the piston ring body is covered by a hard layer which is covered by an abrasion-resisting layer, an expansion part is arranged on the upper portion of the piston ring body in the circumferential direction, and a curved surface is formed on upper surface of the expansion part. Due to the fact that the annular groove in the piston ring body is internally provided with the supporting parts which can play a role of supporting, the piston ring body cannot be deformed easily. The upper portion of the piston ring body is provided with the expansion part made up of nitinol rings, and the expansion part is good in abrasion-resisting performance and high-temperature-resisting performance.
Description
Technical field
The utility model relates to a kind of piston ring, relates in particular to a kind of abrasion-proof piston ring.
Background technique
Piston ring is to enter the metal ring of piston groove inside for down, and piston ring is installed on piston, for realizing the level and smooth to-and-fro motion of piston in cylinder, and the combustion gas of high temperature is sealed.Piston works long hours, and sealing effect is not good, and distortion is even arranged slightly, can't reach desirable supporting role, to piston for engine, requires width little, lightweight and frictional loss is little.Therefore, need to provide a kind of new technological scheme to solve the problems referred to above.
The model utility content
The purpose of this utility model is to provide the little abrasion-proof piston ring of a kind of frictional loss.
The technical solution adopted in the utility model is:
Abrasion-proof piston ring, comprise a piston ring main body, this piston ring main body is placed in piston ring groove, described piston ring main body has annular groove along inner peripheral surface, be provided with a plurality of supports in described annular groove, described piston ring body surfaces is covered with a hard layer, and described hard layer is covered with an anti abrasion layer outward, described piston ring main body top along the circumferential direction is provided with an expansion piece, and described expansion piece upper surface forms a curved surface.
Described expansion piece is made by the nitinol circle.
Described support is a steel ball.
Described hard layer is chromium coating.
Described anti abrasion layer is that class is bored carbon-coating.
The beneficial effects of the utility model: the utility model adopts and be provided with a plurality of supports in the annular groove of piston ring main body, this support can play supporting role, make the piston ring main body not yielding, this piston ring main body top is provided with an expansion piece of being made by the nitinol circle, wear-resisting good with resistance to high temperature.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 be in Fig. 1 along A-A to sectional view.
Wherein: 1, piston ring main body, 2, piston ring groove, 3, annular groove, 4, steel ball, 5, hard layer, 6, anti abrasion layer, 7, expansion piece, 8, curved surface.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As illustrated in fig. 1 and 2, abrasion-proof piston ring of the present utility model, comprise a piston ring main body 1, this piston ring main body 1 is placed in piston ring groove 2, piston ring main body 1 has annular groove 3 along inner peripheral surface, be provided with a plurality of steel balls 4 in annular groove 3, steel ball 4 plays supporting role, piston ring main body 1 surface is covered with a hard layer 5, hard layer 5 is chromium coating, the outer anti abrasion layer 6 that is covered with of hard layer 5, anti abrasion layer 6 bores carbon-coating for class, piston ring main body 1 top along the circumferential direction is provided with an expansion piece 7, expansion piece 7 is made by the nitinol circle, wear-resisting good with resistance to high temperature, expansion piece 7 upper surfaces form a curved surface 8.
Piston ring is installed on piston, piston in cylinder in level and smooth to-and-fro motion, the long-term frequent piston ring that uses, make piston ring surface be worn, sealing reduces, the utility model is by being provided with a plurality of steel balls to reach the effect of supporting in the annular groove 3 in piston ring main body 1, this piston ring main body 1 top is provided with an expansion piece of being made by the nitinol circle 7, nitinol is a kind of marmem, it can automatically revert to the plastic deformation of self special alloy of original-shape under a certain specified temp, has wear resistance and superelasticity.
Claims (5)
1. abrasion-proof piston ring, comprise a piston ring main body, this piston ring main body is placed in piston ring groove, it is characterized in that: described piston ring main body has annular groove along inner peripheral surface, be provided with a plurality of supports in described annular groove, described piston ring body surfaces is covered with a hard layer, and described hard layer is covered with an anti abrasion layer outward, described piston ring main body top along the circumferential direction is provided with an expansion piece, and described expansion piece upper surface forms a curved surface.
2. abrasion-proof piston ring according to claim 1, it is characterized in that: described expansion piece is made by the nitinol circle.
3. abrasion-proof piston ring according to claim 1, it is characterized in that: described support is a steel ball.
4. abrasion-proof piston ring according to claim 1, it is characterized in that: described hard layer is chromium coating.
5. abrasion-proof piston ring according to claim 1 is characterized in that: described anti abrasion layer is that class is bored carbon-coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320503315.9U CN203374379U (en) | 2013-08-07 | 2013-08-07 | Abrasion-resisting piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320503315.9U CN203374379U (en) | 2013-08-07 | 2013-08-07 | Abrasion-resisting piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374379U true CN203374379U (en) | 2014-01-01 |
Family
ID=49836912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320503315.9U Expired - Fee Related CN203374379U (en) | 2013-08-07 | 2013-08-07 | Abrasion-resisting piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374379U (en) |
-
2013
- 2013-08-07 CN CN201320503315.9U patent/CN203374379U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20140101 Termination date: 20140807 |
|
| EXPY | Termination of patent right or utility model |