CN204458078U - The piston of long service life - Google Patents
The piston of long service life Download PDFInfo
- Publication number
- CN204458078U CN204458078U CN201520077171.4U CN201520077171U CN204458078U CN 204458078 U CN204458078 U CN 204458078U CN 201520077171 U CN201520077171 U CN 201520077171U CN 204458078 U CN204458078 U CN 204458078U
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- CN
- China
- Prior art keywords
- piston
- cavity
- pin
- hole
- service life
- 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 relates to a kind of piston, especially a kind of piston of long service life.Comprise head and skirt section, be provided with pin-and-hole in skirt section, described pin-and-hole is connected by two-part half bore and forms, and two-part half bore center of circle, aperture are all different, and the part that two half bore combine is a circular arc, form unloading cavity along pin-and-hole direction.Pin-and-hole is arranged to two-part half bore and is connected and composed by said structure, and form unloading cavity, so when piston movement, unloading cavity can reduce the pressure of pin-and-hole carrying, make it evenly to connecting part, improve the strength of half bore, make the stressing conditions of pin-and-hole more stable by the circular arc characteristic of unloading cavity simultaneously.
Description
Technical field
The utility model relates to a kind of piston, especially a kind of piston of long service life.
Background technique
Along the reciprocating mechanical parts of cylinder body axis in the cylinder body of the machineries such as stroke piston combustion engine (see internal-combustion engine), compressor and pump.Piston has disc, cylindrical and cylindrical shape 3 kinds of forms.In internal-combustion engine, piston work done under the promotion of high-temperature high-pressure fuel gas.In compressor and pump, piston applies pressure to the fluid in cylinder body under external force, flows to cause fluid and improves its pressure.In oil hydraulic cylinder, piston work done under the promotion of pressure oil.The Closed End of piston bears the pressure of working fluid, and forms firing chamber or minimum cylinder volume with cylinder cap, casing wall.Piston ring or colloid seal circle piston be equipped with in case fluid is leaked.Piston can cylinder iron, the material manufacture such as forged steel, cast steel or aluminum alloy.In internal-combustion engine, in order to reduce quality and the inertial force of piston.
Piston in the market has many problems, and working life is obviously not long, and its reason has following several factor impact, piston pin hole strength is single edge contact face, strength is not high, and the head of flat-top easily makes mixture combustion generation detonation, and force of the breath is excessive, damage piston, piston crown, under the impact of burning with friction, can heat up, cause piston crown thermal expansion, increase frictional force, affect piston and normally use.
Model utility content
The purpose of this utility model is, provides a kind of and prevents that thermal expansion, strength are high, the piston of the rational long service life of mixed combustion.
The utility model solves the technological scheme that its technical problem adopts: a kind of piston of long service life, comprise head and skirt section, pin-and-hole is provided with in skirt section, described pin-and-hole is made up of the linking of two-part half bore, two-part half bore center of circle, aperture are all different, the part that two half bore combine is a circular arc, forms unloading cavity along pin-and-hole direction.
This is arranged is arranged to two-part half bore by pin-and-hole and connects and composes, and form unloading cavity, so when piston movement, unloading cavity can reduce the pressure of pin-and-hole carrying, make it evenly to connecting part, improve the strength of half bore, make the stressing conditions of pin-and-hole more stable by the circular arc characteristic of unloading cavity simultaneously.
Of the present utility modelly to be set to further: in piston crown, inlayed an anti-swollen steel ring, anti-swollen steel ring reed is in the inside of piston crown.
This is arranged in piston crown and arranges anti-swollen steel ring, and so when piston crown expanded by heating, because anti-swollen steel ring is heated gently, expansivity is much little, is carried out the expansion of limited piston head by anti-swollen steel ring.
Of the present utility modelly to be set to further: piston crown is provided with a special-shaped burning cavity, burning cavity is divided into two parts, a part is circular cavity, the downward oblique extension of inwall of cavity, the air guide platform of a semicircle is provided with in the side of cavity, air guide platform plane extends to cavity part, and is connected with a side of cavity.
This top being arranged on head is provided with a special-shaped burning cavity, by the air guide platform of a semicircle, makes mixed gas progress into cavity, utilize the sloped sidewall of cavity to carry out excessively, burning being become and progressively burning, avoid detonation to produce excessive impact force.
Of the present utility modelly to be set to further: around the pin-and-hole of skirt section, offer cavity, form a loss of weight chamber.
This is arranged through and arranges loss of weight chamber, not only reduces the quality of piston, keeps its mechanical property, and reduces the load of pin-and-hole, increases its strength, is combined the overall working life extending piston with other structures.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment;
Fig. 2 is the sectional view of the present embodiment;
Fig. 3 is the plane view of the present embodiment.
Embodiment
With reference to figure 1, Fig. 2, Fig. 3 is known, the piston of a kind of long service life of the utility model, comprise head 1 and skirt section 2, pin-and-hole 21 is provided with in skirt section 2, described pin-and-hole 21 is made up of the linking of two-part half bore, two-part half bore center of circle, aperture is all different, the part that two half bore combine is a circular arc, unloading cavity 22 is formed along pin-and-hole 21 direction, an anti-swollen steel ring 3 has been inlayed in piston crown 1, anti-swollen steel ring 3 reed is in the inside of piston crown 1, piston crown 1 is provided with a special-shaped burning cavity 4, burning cavity 4 is divided into two parts, a part is circular cavity 41, the downward oblique extension of inwall of cavity 41, the air guide platform 42 of a semicircle is provided with in the side of cavity 41, air guide platform 42 plane extends to cavity 41 part, and be connected with a side of cavity 41, cavity is offered around skirt section 2 pin-and-hole 21, form a loss of weight chamber 23.
Obviously, above-described embodiment is only used to done citing is clearly described, and the restriction not to mode of execution.To those of ordinary skill in the art, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of extending out or variation be still in protection domain of the present utility model.
Claims (5)
1. a piston for long service life, comprises head and skirt section, is provided with pin-and-hole in skirt section, it is characterized in that: described pin-and-hole is made up of the linking of two-part half bore, two-part half bore center of circle, aperture are all different, and the part that two half bore combine is a circular arc, form unloading cavity along pin-and-hole direction.
2. according to the piston of long service life according to claim 1, it is characterized in that: in piston crown, inlayed an anti-swollen steel ring, anti-swollen steel ring reed is in the inside of piston crown.
3. according to the piston of the long service life described in claim 1 or 2, it is characterized in that: piston crown is provided with a special-shaped burning cavity, burning cavity is divided into two parts, a part is circular cavity, the downward oblique extension of inwall of cavity, be provided with the air guide platform of a semicircle in the side of cavity, air guide platform plane extends to cavity part, and is connected with a side of cavity.
4. according to the piston of the long service life described in claim 1 or 2, it is characterized in that: around the pin-and-hole of skirt section, offer cavity, form a loss of weight chamber.
5. according to the piston of long service life according to claim 3, it is characterized in that: around the pin-and-hole of skirt section, offer cavity, form a loss of weight chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520077171.4U CN204458078U (en) | 2015-02-04 | 2015-02-04 | The piston of long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520077171.4U CN204458078U (en) | 2015-02-04 | 2015-02-04 | The piston of long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204458078U true CN204458078U (en) | 2015-07-08 |
Family
ID=53664979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520077171.4U Expired - Fee Related CN204458078U (en) | 2015-02-04 | 2015-02-04 | The piston of long service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204458078U (en) |
-
2015
- 2015-02-04 CN CN201520077171.4U patent/CN204458078U/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: 20150708 Termination date: 20190204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |