CN212774529U - Durable piston - Google Patents
Durable piston Download PDFInfo
- Publication number
- CN212774529U CN212774529U CN202020975035.8U CN202020975035U CN212774529U CN 212774529 U CN212774529 U CN 212774529U CN 202020975035 U CN202020975035 U CN 202020975035U CN 212774529 U CN212774529 U CN 212774529U
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- China
- Prior art keywords
- piston
- steel cylinder
- durable
- skirt
- piston skirt
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- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a durable piston, including the piston head establish the gas ring groove, the piston skirt is equipped with the piston pin seat hole, the cover has the steel cylinder on the piston skirt, steel cylinder top perisporium and piston skirt bolt fastening, and form the oil ring groove between steel cylinder top surface and the piston head bottom surface, and open porosely on the steel cylinder, correspond with piston pin seat hole on the piston skirt, upper portion and lower part fluting on the steel cylinder establish the balancing ring, the diameter of balancing ring is greater than the diameter of steel cylinder, this piston adopts split type structure, overlap the steel cylinder on the piston skirt in order to improve intensity and hardness, and form the oil ring groove with steel cylinder top surface and piston head bottom surface, simplify the structure, and install the balancing ring and cylinder wall contact on the steel cylinder upper and lower part, reduce the area of contact, improve life, adopt the steel cylinder cover on the piston skirt in this scheme, with steel cylinder intensity high, hardness is high, improve the wearability, and because of its stable in structure, so settle the balancing ring on the steel cylinder, further improving the service life.
Description
Technical Field
The utility model relates to a piston device technical field especially relates to durable type piston.
Background
The piston is one of the key vulnerable parts which directly affect the performance and service life of the internal combustion engine, and the main function of the piston is to bear the combustion pressure in the cylinder and transmit the force to the crankshaft through the piston-crank mechanism so as to obtain the output torque. The traditional piston is generally made of aluminum and has high abrasion degree, and for the reason, the physical properties of the piston are increased when steel pistons are manufactured by part of enterprises, but the traditional piston has the defect of high cost and needs to be improved.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to a durable piston to solve the above problems.
The technical scheme of the utility model is that:
the durable piston comprises a piston head, wherein a gas ring groove is formed in the piston head, a piston skirt is provided with a piston pin seat hole, a steel cylinder is sleeved on the piston skirt, the peripheral wall of the top of the steel cylinder is fixed with the piston skirt through bolts, an oil ring groove is formed between the top surface of the steel cylinder and the bottom surface of the piston head, a hole is formed in the steel cylinder and corresponds to the piston pin seat hole in the piston skirt, a balance ring is arranged on the upper portion and the lower portion of the steel cylinder in a groove mode, and the diameter of the balance ring is larger than that.
This piston adopts split type structure, overlaps the steel cylinder in order to improve intensity and hardness on the piston skirt to form the oil ring groove with steel cylinder top surface and piston head bottom surface, simplify the structure, and the lower part installation balancing ring contacts with the cylinder wall on the steel cylinder, reduces area of contact, improves life.
Adopt the steel cylinder cover on the piston skirt in this scheme to steel cylinder intensity is high, hardness is high, improves the wearability, and because of its stable in structure, so fluting arrangement balancing ring on the steel cylinder further improves life.
Furthermore, the piston is of a three-level step type, the top first-level step surface is the piston head, and the lower step surface forms a piston skirt, so that the steel cylinder can be conveniently sleeved.
Further, the inner wall of the opening at the top of the steel cylinder is of a two-stage step type, the steel cylinder is sleeved on the piston skirt, bolt holes are radially formed in the peripheral wall of the top of the steel cylinder, the bolt holes are also formed in the peripheral wall of the piston skirt, and structural stability is improved.
Further, an installation groove is formed in the lower portion of a bolt on the peripheral wall of the top of the steel cylinder, an installation groove is formed in the lower portion of a hole, corresponding to the piston pin hole, in the steel cylinder, a balance ring is arranged in the installation groove, and structural stability is improved.
Furthermore, heat dissipation grooves are formed in the two sides of the hole, corresponding to the piston pin base hole, in the steel cylinder, and therefore heat dissipation efficiency is improved.
Furthermore, a plurality of heat dissipation holes are formed in the bottom wall of the heat dissipation groove, and heat dissipation efficiency is improved.
Further, the aperture of the heat dissipation hole: 2-3mm, the number of heat dissipation holes: 10-20, and the structural stability is prevented from being influenced.
Furthermore, the peripheral wall of the head of the piston and the peripheral wall of the steel cylinder are coated with graphite layers, so that friction is reduced, and the service life is prolonged.
Drawings
FIG. 1: the structure of the utility model in the embodiment 1;
FIG. 2: FIG. 1 is a sectional view of the structure;
in the figure: 1. a piston head; 2. a piston skirt; 3. an aperture; 4. a steel cylinder; 5. a gas ring groove; 6. an oil ring groove; 7. a balance ring; 8. a heat sink; 9. heat dissipation holes; 10. fixing grooves; 11. a piston pin boss bore; 12. and (4) mounting the groove.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.
Example 1
Referring to fig. 1 and 2, the present embodiment provides a durable piston, wherein the piston is a three-level stepped cylinder, and is integrally formed, and made of aluminum, the top step surface is a piston head 1, the circumferential wall is provided with two gas ring grooves 5, the step surface below the piston head forms a piston skirt 2, the piston skirt is provided with a piston pin seat hole 11, in the present embodiment, a steel cylinder is sleeved on the piston skirt, the top opening of the steel cylinder is a two-level stepped shape corresponding to the piston skirt, referring to fig. 2, the circumferential wall of the top of the steel cylinder and the corresponding circumferential wall of the piston skirt are provided with bolt holes, the steel cylinder 4 is fixed with the piston skirt through bolts, in the present embodiment, 12 bolts are adopted to fix the steel cylinder and the piston skirt, an oil ring groove 6 is formed between the top surface of the steel cylinder and the bottom surface of the piston head, and the steel cylinder is.
Referring to fig. 1, in this embodiment, the upper and lower parts of the steel cylinder are provided with mounting grooves 12, the mounting grooves are sleeved with balancing rings 7, the diameter of the balancing rings is larger than that of the steel cylinder, and the diameter of the steel cylinder in this embodiment is consistent with that of the piston head.
More specifically, an installation groove is formed below a bolt on the peripheral wall of the top of the steel cylinder, an installation groove is formed below a hole corresponding to a piston pin hole in the steel cylinder, a balance ring is sleeved on the installation groove and is in contact with the cylinder wall, the contact area is reduced, the service life is prolonged, and in the embodiment, in order to further improve the service life, graphite layers are coated on the peripheral wall of the head of the piston and the peripheral wall of the steel cylinder, so that friction is reduced.
In another embodiment, the steel cylinder is provided with heat dissipation grooves 8 at two sides of a hole corresponding to the piston pin hole, the steel cylinder is trapezoidal, the width of a groove opening is 12mm, the width of a groove bottom is 8mm, and 16 heat dissipation holes 9 are formed in the bottom wall of the heat dissipation groove, and the diameter of each heat dissipation hole is as follows: 2mm, preferably, the same trompil on the wall that the piston skirt corresponds communicates with piston skirt internal fixation groove 10, improves the radiating efficiency, avoids influencing structural stability simultaneously.
The piston skirt is sleeved with the steel cylinder, the strength and the hardness are high, the oil ring grooves are formed in the top surface of the steel cylinder and the bottom surface of the piston head, the structure is simplified, the balance rings are arranged on the upper portion and the lower portion of the steel cylinder, the contact area is reduced, the structure of the steel cylinder is stable, the heat dissipation grooves are formed to improve the heat dissipation effect, the piston split type structure is increased in assembling procedures and cost, the structural stability is improved, and the service life is prolonged.
Of course, the above is only a specific application example of the present invention, and the protection scope of the present invention is not limited at all. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (8)
1. The durable piston comprises a piston head, wherein a gas ring groove is formed in the piston head, a piston skirt is provided with a piston pin seat hole, and the durable piston is characterized in that a steel cylinder is sleeved on the piston skirt, the peripheral wall of the top of the steel cylinder is fixed with the piston skirt through bolts, an oil ring groove is formed between the top surface of the steel cylinder and the bottom surface of the piston head, a hole is formed in the steel cylinder and corresponds to the piston pin seat hole in the piston skirt, balancing rings are arranged on the upper portion and the lower portion of the steel cylinder in a groove mode, and the diameter of each balancing ring.
2. The durable piston of claim 1, wherein the piston is a three-step stepped piston, the top step surface is a piston head, and the bottom step surface forms a piston skirt.
3. The durable piston as claimed in claim 2, wherein the inner wall of the opening at the top of the steel cylinder is of a two-step type, the steel cylinder is sleeved on the piston skirt, the circumferential wall of the top of the steel cylinder is radially provided with bolt holes, and the circumferential wall of the piston skirt is also provided with bolt holes.
4. The durable piston of claim 1 wherein a mounting groove is formed in the top of the steel cylinder below the bolt in the circumferential wall of the steel cylinder, and a mounting groove is formed in the steel cylinder below the hole corresponding to the piston pin boss hole, and a balance ring is disposed in the mounting groove.
5. The durable piston of claim 4 wherein the steel cylinder has heat sink grooves on both sides of the bore corresponding to the piston pin boss bore.
6. The durable piston of claim 5 wherein said heat sink bottom wall defines a plurality of heat sinks.
7. The durable piston of claim 6 wherein the heat sink hole diameter is: 2-3mm, the number of heat dissipation holes: 10-20.
8. The durable piston of claim 1 wherein the piston head peripheral wall and the steel can peripheral wall are coated with a graphite layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020975035.8U CN212774529U (en) | 2020-06-01 | 2020-06-01 | Durable piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020975035.8U CN212774529U (en) | 2020-06-01 | 2020-06-01 | Durable piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212774529U true CN212774529U (en) | 2021-03-23 |
Family
ID=75070016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020975035.8U Expired - Fee Related CN212774529U (en) | 2020-06-01 | 2020-06-01 | Durable piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212774529U (en) |
-
2020
- 2020-06-01 CN CN202020975035.8U patent/CN212774529U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |