CN211819692U - Cast aluminum piston capable of preventing thermal expansion deformation - Google Patents
Cast aluminum piston capable of preventing thermal expansion deformation Download PDFInfo
- Publication number
- CN211819692U CN211819692U CN202020167317.5U CN202020167317U CN211819692U CN 211819692 U CN211819692 U CN 211819692U CN 202020167317 U CN202020167317 U CN 202020167317U CN 211819692 U CN211819692 U CN 211819692U
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- Prior art keywords
- arc
- piece
- piston
- base member
- pull rod
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Abstract
The utility model discloses a cast aluminium piston of thermal expansion deformation prevention, include: piston base member, arc prevent expanding piece and pull rod, be provided with the cavity in the piston base member, piston base member lower part symmetry is provided with the pinhole seat that extends to the cavity in, the arc prevents expanding piece bilateral symmetry pre-buried in the inner wall of piston base member, the pull rod level sets up in the cavity of piston base member, the both ends of pull rod are extended to respectively and are prevented expanding the piece with the arc in the inner wall of piston base member and be connected, the both ends of pull rod are and prevent expanding the corresponding arc structure of piece with the arc, the arc is prevented expanding piece and pull rod and all is located the top of pinhole seat, the arc is prevented expanding the top surface and the bottom surface of piece and all is provided with the indent structure. In this way, the utility model provides a prevent cast aluminium piston of thermal expansion deformation, the pull rod prevents the bloated piece to the arc and draws admittedly, has promoted the suppression effect to piston side wall thermal energy greatly.
Description
Technical Field
The utility model relates to a piston technical field especially relates to a cast aluminium piston of thermal expansion deformation prevention.
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 has a high thermal expansion coefficient, is easy to expand under a high-temperature environment to accelerate abrasion, and reduces the service life of the engine. Part aluminum alloy piston resists the heat altered shape through burying the expander ring of preventing, but the simple structure of ordinary expander ring of preventing, and the effect of preventing expanding is relatively poor with the combination effect of piston, and it is limited to prevent the expansion effect, needs the improvement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a thermal expansion deformation's cast aluminium piston to solve the problem that exists among the background art.
In order to solve the technical problem, the utility model discloses a technical scheme be: provided is a cast aluminum piston resistant to thermal expansion deformation, including: piston base member, arc prevent expanding piece and pull rod, be provided with the cavity in the piston base member, piston base member lower part symmetry is provided with the pinhole seat that extends to the cavity in, the arc prevents expanding piece bilateral symmetry pre-buried in the inner wall of piston base member, the pull rod level sets up in the cavity of piston base member, the both ends of pull rod are extended to respectively and are prevented expanding the piece with the arc in the inner wall of piston base member and be connected, the both ends of pull rod are and prevent expanding the corresponding arc structure of piece with the arc, the arc is prevented expanding piece and pull rod and all is located the top of pinhole seat, the arc is prevented expanding the top surface and the bottom surface of piece and all is provided with the indent structure.
In a preferred embodiment of the present invention, the concave structure is a rectangular groove, and the top surface and the bottom surface of the arc-shaped anti-expansion sheet are both provided with at least 3 rectangular grooves.
In a preferred embodiment of the present invention, the concave structure is a triangular groove, and the top surface and the bottom surface of the arc-shaped anti-expansion sheet are provided with at least 3 triangular grooves.
In a preferred embodiment of the present invention, the two ends of the pull rod are fixed to the arc-shaped anti-expansion pieces by welding.
In a preferred embodiment of the present invention, a pin shaft mounting hole is provided in the pin shaft seat, and a snap spring mounting groove is provided in the pin shaft mounting hole.
In a preferred embodiment of the present invention, the piston base and the pin hole seat are an integrated cast aluminum structure.
In a preferred embodiment of the present invention, the piston base body is provided with a gas ring groove and an oil ring groove on the outer circumference, and the gas ring groove is located above the oil ring groove.
The utility model has the advantages that: the utility model provides a cast aluminium piston of thermal expansion deformation prevents the setting of bloated piece and pull rod through the arc, and the pull rod prevents to expand the piece to the arc and draws admittedly, has promoted the suppression effect to piston side wall thermal energy greatly, and further top surface and the low side that prevent the piece that expands through at the arc set up the indent structure, strengthen the arc and prevent the combination effect of the piece that expands and piston base member.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic structural view of an embodiment 1 of a cast aluminum piston of the present invention, which is resistant to thermal expansion deformation;
FIG. 2 is a schematic structural view of an arc-shaped expansion prevention piece and a pull rod;
fig. 3 is a schematic structural diagram of an embodiment 2 of the cast aluminum piston of the present invention, which is resistant to thermal expansion deformation.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1:
referring to fig. 1-2, embodiment 1 of the present invention includes: a cast aluminum piston resistant to thermal expansion deformation comprising: piston base member 1, arc prevent bloated piece 2 and pull rod 3, be provided with cavity 4 in the piston base member 1, 1 lower part symmetry of piston base member is provided with the pinhole seat 5 that extends to cavity 4, be provided with round pin axle mounting hole 6 in the pinhole seat 5, support the both ends of round pin axle, be provided with jump ring mounting groove 7 in the round pin axle mounting hole 6, make things convenient for the installation of jump ring, carry on spacingly to the both ends of round pin axle, avoid axial to slide.
The piston base body 1 and the pin hole base 5 are of an integrated cast aluminum structure, and are light in weight, high in structural strength and beneficial to reducing the energy consumption of an engine.
Be provided with gas ring groove 8 and oil ring groove 9 on the excircle of piston base member 1, gas ring groove 8 is located the top of oil ring groove 9, carries out the installation of gas ring and oil ring respectively, promotes piston motion's gas tightness, reduces the machine oil loss.
The arc prevents that bloated piece 2 bilateral symmetry is pre-buried in the inner wall of piston base member 1, pull rod 3 level sets up in the cavity 4 of piston base member 1, the both ends of pull rod 3 extend to respectively in the inner wall of piston base member 1 with the arc prevent bloated piece 2 and be connected, the both ends of pull rod 3 are and prevent the corresponding arc structure of bloated piece 2 with the arc, the both ends of pull rod 3 and arc prevent through welded fastening between the bloated piece 3. Through the setting of the arc anti-expansion piece 2 and the pull rod 3, the pull rod 3 is used for pulling and fixing the arc anti-expansion piece 2, and the inhibition effect on the thermal expansion of the side wall of the piston is greatly improved.
The arc-shaped anti-expansion sheet 2 and the pull rod 3 are made of metal materials with low expansion coefficients, such as iron-nickel alloy, so that the problem of thermal expansion deformation is solved.
The arc is prevented bloated piece 2 and pull rod 3 and is all located the top of pinhole seat 5, the arc is prevented bloated piece 2's top surface and bottom surface and all is provided with the indent structure, the indent structure is rectangle recess 10, and the arc is prevented bloated piece 2's top surface and bottom surface and all is provided with 3 at least rectangle recesses 10, the arc is prevented bloated piece 2 and is put into the mould, carry out the casting of piston base member 1, partial cast aluminium material gets into and fills in rectangle recess 10, strengthened the arc and prevented bloated piece 2 and piston base member 1's combination effect, on the arc is prevented bloating the basis of preventing of bloating of piece 2, utilize rectangle recess 10 to the spacing of partial cast aluminium material, promote the effect of restraining the expansion of piston base member 1 lateral wall.
Example 2:
referring to fig. 3, the embodiment 2 of the present invention is basically similar to the embodiment 1 in structure, and the only difference is that the concave structure is a triangular groove 11, and the top surface and the bottom surface of the arc-shaped expansion-preventing piece 2 are both provided with at least 3 triangular grooves 11, the arc-shaped expansion-preventing piece 2 is placed into the mold, the piston base body 1 is cast, and a part of cast aluminum material enters the triangular grooves 11 for filling, so that the combination effect of the arc-shaped expansion-preventing piece 2 and the piston base body 1 is enhanced.
To sum up, the utility model provides a prevent cast aluminium piston of thermal expansion deformation, through the arc prevent the setting of bloated piece and pull rod, the pull rod prevents the piece that expands to the arc and draws admittedly, has promoted the suppression effect to piston side wall thermal energy greatly, and further top surface and the low side that prevent the piece that expands through at the arc set up the indent structure, strengthen the arc and prevent the combination effect of bloated piece and piston base member.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (7)
1. A cast aluminum piston resistant to thermal expansion deformation, comprising: piston base member, arc prevent expanding piece and pull rod, be provided with the cavity in the piston base member, piston base member lower part symmetry is provided with the pinhole seat that extends to the cavity in, the arc prevents expanding piece bilateral symmetry pre-buried in the inner wall of piston base member, the pull rod level sets up in the cavity of piston base member, the both ends of pull rod are extended to respectively and are prevented expanding the piece with the arc in the inner wall of piston base member and be connected, the both ends of pull rod are and prevent expanding the corresponding arc structure of piece with the arc, the arc is prevented expanding piece and pull rod and all is located the top of pinhole seat, the arc is prevented expanding the top surface and the bottom surface of piece and all is provided with the indent structure.
2. The cast aluminum piston capable of preventing thermal expansion deformation according to claim 1, wherein the concave structure is a rectangular groove, and the top surface and the bottom surface of the arc-shaped expansion-preventing piece are provided with at least 3 rectangular grooves.
3. The cast aluminum piston capable of preventing thermal expansion deformation according to claim 1, wherein the concave structure is a triangular groove, and the top surface and the bottom surface of the arc-shaped expansion-preventing piece are provided with at least 3 triangular grooves.
4. The cast aluminum piston capable of preventing thermal expansion deformation according to claim 1, wherein the two ends of the tie rod and the arc-shaped anti-expansion piece are fixed by welding.
5. The cast aluminum piston capable of preventing thermal expansion deformation according to claim 1, wherein a pin shaft mounting hole is formed in the pin shaft seat, and a snap spring mounting groove is formed in the pin shaft mounting hole.
6. The cast aluminum piston protected against thermal expansion deformation of claim 1, wherein the piston base and the pin bore seat are of an integral cast aluminum construction.
7. The cast aluminum piston protected against thermal expansion deformation of claim 1 wherein the outer circumference of the piston base body is provided with a gas ring groove and an oil ring groove, the gas ring groove being located above the oil ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020167317.5U CN211819692U (en) | 2020-02-13 | 2020-02-13 | Cast aluminum piston capable of preventing thermal expansion deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020167317.5U CN211819692U (en) | 2020-02-13 | 2020-02-13 | Cast aluminum piston capable of preventing thermal expansion deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211819692U true CN211819692U (en) | 2020-10-30 |
Family
ID=72992850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020167317.5U Expired - Fee Related CN211819692U (en) | 2020-02-13 | 2020-02-13 | Cast aluminum piston capable of preventing thermal expansion deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211819692U (en) |
-
2020
- 2020-02-13 CN CN202020167317.5U patent/CN211819692U/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: 20201030 Termination date: 20210213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |