CN203035366U - Steel top and aluminum skirt combining piston - Google Patents
Steel top and aluminum skirt combining piston Download PDFInfo
- Publication number
- CN203035366U CN203035366U CN 201220667832 CN201220667832U CN203035366U CN 203035366 U CN203035366 U CN 203035366U CN 201220667832 CN201220667832 CN 201220667832 CN 201220667832 U CN201220667832 U CN 201220667832U CN 203035366 U CN203035366 U CN 203035366U
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- Prior art keywords
- piston
- piston crown
- skirt
- crown
- bolt
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- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a steel top and aluminum skirt combining piston comprising a piston head part and a piston skirt part which are combined and connected through a bolt an a nut. The steel top and aluminum skirt combining piston is characterized in that the bolt or the nut are combined with the piston head part into a whole. The steel top and aluminum skirt combining piston has the advantages that the combination strength of the piston head part and the piston skirt part is improved, risks possibly existing in fit are reduced and eliminated, space reserved for assembly is narrowed and the structural strength of the piston is improved.
Description
Technical field
The utility model belongs to piston and makes field, particularly a kind of combination of steel roof aluminum piston skirt.
Background technique
Along with the continuous development of engine technology, to improving constantly of engine power and reinforcement index request, the detonation pressure that makes engine piston bear also progressively increases, and the operating temperature that piston head bears constantly raises.All-aluminium piston has been difficult to satisfy the demand of motor development gradually, and in order to guarantee motor at work, piston head can bear High Temperature High Pressure, piston skirt also can bear the effect of high side pressure power, and piston weight can not increase too much.
In order to address the above problem, whole forged steel piston has appearred, though whole forged steel piston structural strength is better, piston weight increases big and processing is very difficult.Steel crown and aluminum skirt piston occurred, the requirement that can satisfy on the structural strength of this piston can make the weight of piston increase less again thereupon.As shown in Figure 1, its piston crown of steel crown and aluminum skirt piston and piston skirt are fixed together by bolt and nut independently, but the space that this independent bolt and nut needs is bigger, has reduced structure of piston intensity, and have increased and connect the risk that lost efficacy.
The model utility content
The technical problems to be solved in the utility model provides a kind of combination of steel roof aluminum piston skirt, the combination of steel roof aluminum piston skirt that the utility model provides improves the adhesive strength of piston crown and piston skirt, reduce to push up, skirt and bolt cooperate the risk that may exist, also dwindle simultaneously the assembling headspace, improve piston structure intensity.
For solving the problems of the technologies described above, the utility model provides a kind of combination of steel roof aluminum piston skirt, comprises piston crown and piston skirt, and described piston crown and described piston skirt are connected by bolts and nuts, it is characterized in that described bolt and described piston crown are one.
Preferably, the external diameter of described piston crown is less than or equal to 200mm, and described bolt is located at the piston crown center, and described bolt quantity is 1.
Preferably, described piston crown external diameter is greater than 200mm, and described bolt quantity is more than 2, and described bolt evenly distributes along described piston crown circumference.
The utility model also provides a kind of combination of steel roof aluminum piston skirt, comprises piston crown and piston skirt, and described piston crown and described piston skirt are connected by bolts and nuts, it is characterized in that, described nut and described piston crown are one.
Preferably, described nut is the tapped hole that is located at the piston crown below.
Preferably, the external diameter of described piston crown is less than or equal to 200mm, and described tapped hole is located at the piston crown center, and described tapped hole quantity is 1.
Preferably, described piston crown external diameter is greater than 200mm, and described tapped hole quantity is more than 2, and described tapped hole evenly distributes along described piston crown circumference.
Combination of steel roof aluminum piston skirt provided by the utility model, compared with prior art, be designed to one owing to be used for to connect the bolt of piston crown and piston skirt or nut and piston crown, improved the two adhesive strength of piston crown and piston skirt, reduced to eliminate and cooperated the risk that may exist, simultaneously also dwindle the assembling headspace, improved structure of piston intensity; When piston crown external diameter during greater than 200mm, a plurality of bolt and nuts evenly distribute along the piston crown circumference, can improve the adhesive strength between piston crown and the piston skirt, have reduced the connection failure risk.
Description of drawings
Fig. 1 is the combination of steel roof aluminum piston skirt structural representation that connects by independent bolt and nut;
Fig. 2 is that nut and piston crown are the combined piston schematic representation of one;
Fig. 3 is that bolt and piston crown are the combined piston schematic representation of one.
Among the figure,
1, piston crown; 2, piston skirt; 3, independent bolt and nut; 4, tapped hole; 5, bolt; 6, nut.
Embodiment
In order to make those skilled in the art person understand the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
See also Fig. 2, a kind of combination of steel roof aluminum piston skirt provided by the utility model, comprise piston crown 1 and piston skirt 2, be provided with tapped hole 4 below piston crown 1,2 are provided with the hole corresponding with tapped hole 4 in the piston skirt, and bolt 5 matches with tapped hole 4, bolt 5 passes on the piston skirt 2 hole corresponding with tapped hole 4, piston crown 1 and piston skirt 2 are fixed together, because tapped hole 4 is arranged on the piston crown 1, have improved the adhesive strength of piston crown 1 with piston skirt 2.When the external diameter of piston crown 1 was less than or equal to 200mm, tapped hole 4 was arranged on the central position of piston crown 1, and tapped hole is one.When the external diameter of piston crown 1 during greater than 200mm, the number of tapped hole 4 is 2 or 4, and tapped hole 4 evenly distributes along piston crown 1 circumference.
See also Fig. 2, another kind of combination of steel roof aluminum piston skirt provided by the utility model, comprise piston crown 1 and piston skirt 2, below piston crown 1, be provided with bolt 5,2 are provided with the hole corresponding with bolt 5 in the piston skirt, bolt 5 passes on the piston skirt 2 hole corresponding with bolt 5, nut 6 matches with bolt 5, nut 6 is tightened on the bolt 5, piston crown 1 and piston skirt 2 are fixed together, because bolt 5 is designed to one with piston crown 1, improved the adhesive strength of piston crown 1 with piston skirt 2.When the external diameter of piston crown 1 was less than or equal to 200mm, bolt 5 was arranged on the central position of piston crown 1, and bolt 5 quantity are one.When the external diameter of piston crown 1 during greater than 200mm, the quantity of bolt 5 is 2 or 4, and bolt 5 evenly distributes along piston crown 1 circumference below piston crown 1.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use model utility.Multiple modification to these embodiments will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments herein.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a combination of steel roof aluminum piston skirt comprises piston crown and piston skirt, and described piston crown and described piston skirt are connected by bolts and nuts, it is characterized in that, described bolt and described piston crown are one.
2. combination of steel roof aluminum piston skirt according to claim 1 is characterized in that, the external diameter of described piston crown is less than or equal to 200mm, and described bolt is located at the piston crown center, and described bolt quantity is 1.
3. combination of steel roof aluminum piston skirt according to claim 1 is characterized in that, described piston crown external diameter is greater than 200mm, and described bolt quantity is more than 2, and described bolt evenly distributes along described piston crown circumference.
4. a combination of steel roof aluminum piston skirt comprises piston crown and piston skirt, and described piston crown and described piston skirt are connected by bolts and nuts, it is characterized in that, described nut and described piston crown are one.
5. combination of steel roof aluminum piston skirt according to claim 4 is characterized in that, described nut is the tapped hole that is located at the piston crown below.
6. combination of steel roof aluminum piston skirt according to claim 5 is characterized in that, the external diameter of described piston crown is less than or equal to 200mm, and described tapped hole is located at the piston crown center, and described tapped hole quantity is 1.
7. combination of steel roof aluminum piston skirt according to claim 5 is characterized in that, described piston crown external diameter is greater than 200mm, and described tapped hole quantity is more than 2, and described tapped hole evenly distributes along described piston crown circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220667832 CN203035366U (en) | 2012-12-06 | 2012-12-06 | Steel top and aluminum skirt combining piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220667832 CN203035366U (en) | 2012-12-06 | 2012-12-06 | Steel top and aluminum skirt combining piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035366U true CN203035366U (en) | 2013-07-03 |
Family
ID=48687498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220667832 Expired - Fee Related CN203035366U (en) | 2012-12-06 | 2012-12-06 | Steel top and aluminum skirt combining piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943717A (en) * | 2012-12-06 | 2013-02-27 | 湖南江滨机器（集团）有限责任公司 | Steel roof aluminum skirt combinational piston |
-
2012
- 2012-12-06 CN CN 201220667832 patent/CN203035366U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943717A (en) * | 2012-12-06 | 2013-02-27 | 湖南江滨机器（集团）有限责任公司 | Steel roof aluminum skirt combinational piston |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20201206 |