CN209855920U - Assembled piston based on movable anti-expansion ring - Google Patents
Assembled piston based on movable anti-expansion ring Download PDFInfo
- Publication number
- CN209855920U CN209855920U CN201920541507.6U CN201920541507U CN209855920U CN 209855920 U CN209855920 U CN 209855920U CN 201920541507 U CN201920541507 U CN 201920541507U CN 209855920 U CN209855920 U CN 209855920U
- Authority
- CN
- China
- Prior art keywords
- pin shaft
- piston
- base body
- ring
- shaft installation
- 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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Abstract
The utility model discloses an equipment piston based on expander is prevented in activity, it includes: the piston comprises a piston base body, an anti-expansion ring and a pin shaft installation sleeve, wherein through holes are symmetrically formed in the skirt portion of the piston base body, the pin shaft installation sleeve is arranged in the through holes, spring clamps located at the outer end of the pin shaft installation sleeve are arranged in the through holes, the pin shaft installation sleeve is internally provided with a pin shaft installation hole, the bottom of the piston base body is provided with an annular groove extending upwards, and the anti-expansion ring is arranged in the annular groove and located above the pin shaft installation sleeve. Based on equipment piston that expander was prevented in activity, the expander is prevented in the specially designed activity, avoids pre-buried in the piston base body of cast aluminium, has promoted the production facility and the yield of piston base body, prevents holding of expander through the ring channel, promotes the skirt section high temperature of piston base body and prevents the bloated effect to it is spacing to utilize round pin axle installation cover to prevent the bottom of expander, stable in structure, dismantles and maintains the facility.
Description
Technical Field
The utility model relates to a piston technical field especially relates to an equipment piston based on expander is prevented in activity.
Background
The automobile piston is better than the center part of an automobile engine and is used for bearing gas pressure, a connecting rod is driven by a piston pin to drive a crankshaft to rotate, and the top of the piston is also a component of a combustion chamber, so that the automobile piston occupies an extremely important position when the engine runs.
The aluminum alloy piston is light in weight and beneficial to reducing the energy consumption of an engine, but the aluminum alloy piston is high in thermal expansion coefficient, easy to expand in a high-temperature environment to accelerate abrasion, and the service life of the engine is shortened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an equipment piston based on expander is prevented in the activity, strengthens preventing the effect that expands, promotes the components of a whole that can function independently and retrieves the convenience.
To achieve the purpose, the utility model adopts the following technical proposal:
an assembled piston based on a movable anti-expansion ring, comprising: the piston comprises a piston base body, an anti-expansion ring and a pin shaft installation sleeve, wherein through holes are symmetrically formed in the skirt portion of the piston base body, the pin shaft installation sleeve is arranged in the through holes, spring clamps located at the outer end of the pin shaft installation sleeve are arranged in the through holes, the pin shaft installation sleeve is internally provided with a pin shaft installation hole, the bottom of the piston base body is provided with an annular groove extending upwards, and the anti-expansion ring is arranged in the annular groove and located above the pin shaft installation sleeve.
And a clamping groove corresponding to the spring clamp is arranged in the through hole.
Wherein, the anti-expansion ring is a steel ring with a rectangular section.
Wherein, the upper portion of piston base member excircle is provided with gas ring groove and oil ring groove.
The pin shaft mounting hole is a stepped hole.
The top surface of the anti-expansion ring is in contact with the top surface of the annular groove, and the bottom surface of the anti-expansion ring is in contact with the top of the pin shaft mounting sleeve and limited.
The utility model has the advantages that: the utility model provides an equipment piston based on expander is prevented in activity, components of a whole that can function independently package assembly, the expander is prevented in the activity that has designed very much that can dismantle, avoid pre-buried in the piston base body of cast aluminium, the production convenience and the yield of piston base body have been promoted, prevent holding of expander through the ring channel, promote the skirt section high temperature of piston base body and prevent the bloated effect, and it is spacing to utilize round pin axle installation cover to prevent the bottom of expander, stable in structure, it is convenient to dismantle and maintain, the recycle who prevents the expander has been promoted.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution of the present invention is further explained by the specific embodiment with reference to fig. 1.
A mobile expansion-ring based assembled piston as shown in figure 1, comprising: piston base member 1, prevent expander 4 and round pin axle installation cover 9, piston base member 1 adopts cast aluminium structure, and the dead weight is light, and structural strength is high. In the prior art, the expansion-proof ring is embedded in a die in the production of cast aluminum of the piston matrix 1, the production cost of the cast aluminum is high, the cast aluminum is difficult to separate, and the recycling difficulty is increased.
The piston is characterized in that through holes 6 are symmetrically formed in the skirt portion of the piston base body 1, the pin shaft installation sleeve 9 is arranged in the through holes 6, spring clamps 5 located at the outer ends of the pin shaft installation sleeve 9 are arranged in the through holes 6, the outer ends of the pin shaft installation sleeve 9 are axially limited, and clamping grooves corresponding to the spring clamps 5 are formed in the through holes 6.
The pin shaft mounting sleeve 9 is internally provided with a pin shaft mounting hole 8, the pin shaft mounting hole 8 is a stepped hole, so that the pin shaft is convenient to mount, the two ends of the pin shaft are limited by the stepped hole, and the axial limitation of the inner end of the pin shaft mounting sleeve 9 is realized by the pin shaft.
The bottom of the piston base body 1 is provided with an annular groove 7 which extends upwards to reduce the dead weight, the anti-expansion ring 4 is arranged in the annular groove 7 and is positioned above the pin shaft installation sleeve 9, the anti-expansion ring 4 is installed firstly, the pin shaft installation sleeve 9 is installed later, and the operation is more convenient.
The top surface of the anti-expansion ring 4 is in contact with the top surface of the annular groove 7, the bottom surface of the anti-expansion ring 4 is in contact with the top of the pin shaft mounting sleeve 9 and limited, the anti-expansion ring 4 is limited through the pin shaft mounting sleeve 9, the structure is stable, and the anti-expansion ring 4 is prevented from loosening.
The anti-expansion ring 4 is a steel ring with a rectangular cross section and high strength, the steel ring is made of alloy materials with low expansion coefficients, the thermal expansion coefficient is reduced, the thermal expansion problem of the skirt part of the piston base body 1 is effectively improved, and the service life of the piston is prolonged.
The upper portion of the outer circle of the piston base body 1 is provided with a gas ring groove 2 and an oil ring groove 3, the gas ring and the oil ring are installed respectively, the gas tightness of piston movement is improved, and lubricating oil entering into a combustion chamber is reduced.
After the anti-expansion ring 4 is arranged in the annular groove 7, the problem of thermal expansion deformation of the piston base body 1 can be reduced, and the anti-expansion ring 4 can be taken out after the pin shaft mounting sleeve 9 is disassembled, so that the maintenance and the split recovery of the piston base body 1 are facilitated, and the cost for recovering the anti-expansion ring 4 is reduced.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (6)
1. An assembled piston based on a movable anti-expansion ring, comprising: the piston comprises a piston base body, an anti-expansion ring and a pin shaft installation sleeve, wherein through holes are symmetrically formed in the skirt portion of the piston base body, the pin shaft installation sleeve is arranged in the through holes, spring clamps located at the outer end of the pin shaft installation sleeve are arranged in the through holes, the pin shaft installation sleeve is internally provided with a pin shaft installation hole, the bottom of the piston base body is provided with an annular groove extending upwards, and the anti-expansion ring is arranged in the annular groove and located above the pin shaft installation sleeve.
2. The assembled piston based on the movable anti-expansion ring as claimed in claim 1, wherein a clamping groove corresponding to the spring clamp is arranged in the through hole.
3. The assembled piston based on the movable anti-expansion ring as claimed in claim 1, characterized in that said anti-expansion ring is a steel ring with rectangular section.
4. The assembled piston based on the movable anti-expansion ring as claimed in claim 1, characterized in that the upper part of the outer circle of the piston base body is provided with a gas ring groove and an oil ring groove.
5. The assembled piston based on the movable anti-expansion ring as claimed in claim 1, wherein said pin shaft mounting hole is a stepped hole.
6. The assembled piston based on the movable expansion-proof ring as claimed in claim 1, wherein the top surface of the expansion-proof ring is in contact with the top surface of the annular groove, and the bottom surface of the expansion-proof ring is in contact with the top of the pin shaft mounting sleeve to be limited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920541507.6U CN209855920U (en) | 2019-04-20 | 2019-04-20 | Assembled piston based on movable anti-expansion ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920541507.6U CN209855920U (en) | 2019-04-20 | 2019-04-20 | Assembled piston based on movable anti-expansion ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209855920U true CN209855920U (en) | 2019-12-27 |
Family
ID=68938307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920541507.6U Expired - Fee Related CN209855920U (en) | 2019-04-20 | 2019-04-20 | Assembled piston based on movable anti-expansion ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209855920U (en) |
-
2019
- 2019-04-20 CN CN201920541507.6U patent/CN209855920U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 Termination date: 20200420 |