CN211819693U - Anti-expansion split piston - Google Patents
Anti-expansion split piston Download PDFInfo
- Publication number
- CN211819693U CN211819693U CN202020167319.4U CN202020167319U CN211819693U CN 211819693 U CN211819693 U CN 211819693U CN 202020167319 U CN202020167319 U CN 202020167319U CN 211819693 U CN211819693 U CN 211819693U
- Authority
- CN
- China
- Prior art keywords
- barrel
- piston
- arc
- pull rod
- top cap
- 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
Links
Images
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a components of a whole that can function independently piston of preventing inflation, include: piston top cap, barrel, arc prevent board and pull rod expand, piston top cap sets up the top at the barrel with one heart, the barrel top is provided with the round spacing groove, piston top cap bottom is provided with the spacing collar that the round extends to the spacing inslot, be provided with the cavity in the barrel, barrel lower part symmetry is provided with the pinhole seat that extends to the cavity in, the arc prevents that the board bilateral symmetry that expands is pre-buried in the inside wall of barrel, the pull rod level sets up in the cavity of barrel. In this way, the utility model provides a prevent components of a whole that can function independently piston that expands utilizes the cooperation of spacing groove and spacing collar, carries out the radial positioning of piston top cap on the barrel, has strengthened the sealed of junction to utilize the bolt to the connection of opposite post, carry out the axial positioning of piston top cap on the barrel, stable in structure.
Description
Technical Field
The utility model relates to a piston technical field especially relates to an anti-expansion's components of a whole that can function independently piston.
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.
In recent years, the engine has been strengthened more and more, and the engine speed, the average effective pressure and the piston average speed have been improved more and more than before, so that the thermal load and the mechanical load of the engine have been increased. After the piston is damaged, the piston can be replaced or maintained, but the overall replacement cost is high, and the structural stability of the split piston is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides an anti-expansion's components of a whole that can function independently 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 split piston preventing expansion, including: piston top cap, barrel, arc prevent board and pull rod that expands, piston top cap sets up the top at the barrel with one heart, the barrel top is provided with the round spacing groove, piston top cap bottom is provided with the spacing collar that the round extends to the spacing inslot, be provided with the cavity in the barrel, barrel lower part symmetry is provided with the pinhole seat that extends to the cavity in, the arc prevents that the board bilateral symmetry that expands is pre-buried in the inside wall of barrel, the pull rod level sets up in the cavity of barrel, the both ends of pull rod are connected with the arc is prevented expanding in extending to the inside wall of barrel respectively, piston top cap middle part is provided with the stand that extends to the pull rod, the pull rod bottom is provided with the bolt that is connected with the stand, the top surface and the bottom surface that the board that expand are prevented to the arc all are.
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 expansion-preventing plate 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 expansion-preventing plate are both provided with at least 3 triangular grooves.
In a preferred embodiment of the present invention, the piston top cover and the stop collar are an integral aluminum alloy structure.
In a preferred embodiment of the present invention, the two ends of the pull rod are fixed to the arc-shaped expansion-preventing plate 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 outer circle of the cylinder is provided with a gas ring groove and an oil ring groove, and the gas ring groove is located above the oil ring groove.
In a preferred embodiment of the present invention, the pull rod is provided with a through hole for inserting a bolt.
The utility model has the advantages that: the utility model discloses an anti-expansion split piston, utilize the cooperation of spacing groove and spacing collar, carry out the radial positioning of piston top cap on the barrel, strengthened the sealed of junction, and utilize the bolt to connect the upright post, carry out the axial positioning of piston top cap on the barrel, stable in structure reduces the maintenance frequency, and the maintenance of components of a whole that can function independently structure is convenient, use cost is low; prevent the setting of bloated board and pull rod through the arc, the pull rod prevents the bloated board to the arc and draws admittedly, has promoted the suppression effect to the barrel thermal energy greatly, and further top surface and the low side that prevent the bloated board through at the arc set up the indent structure, strengthen the arc and prevent the combination effect of bloated board and barrel.
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 split piston for preventing expansion according to the present invention;
FIG. 2 is a schematic structural view of a pull rod and an arc-shaped expansion prevention plate;
fig. 3 is a schematic structural diagram of embodiment 2 of a split piston for preventing expansion according to the present invention.
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, an embodiment of the present invention includes:
a split piston that resists expansion, comprising: piston top cap 1, barrel 2, arc prevent expand plate 3 and pull rod 4, piston top cap 1 sets up the top at barrel 2 with one heart, 2 tops of barrel are provided with round spacing groove 5, 1 bottom of piston top cap is provided with the spacing collar 6 that the round extends to spacing groove 5, utilizes the cooperation of spacing groove 5 and spacing collar 6, carries out the radial positioning of piston top cap 1 on barrel 2, has strengthened the sealed of junction.
The improved structure is characterized in that a cavity 7 is formed in the barrel body 2, pin hole seats 8 extending into the cavity 7 are symmetrically arranged on the lower portion of the barrel body 2, pin shaft mounting holes 9 are formed in the pin hole seats 8 and used for supporting two ends of a pin shaft, clamp spring mounting grooves 10 are formed in the pin shaft mounting holes 9, installation of clamp springs is facilitated, the two ends of the pin shaft are limited, and axial sliding is avoided.
The arc prevents that expansion plate 3 bilateral symmetry is pre-buried in the inside wall of barrel 2, pull rod 4 level sets up in cavity 7 of barrel 2, the both ends of pull rod 4 extend to respectively in the inside wall of barrel 2 with the arc prevent that expansion plate 3 is connected, the both ends of pull rod 4 and arc prevent through welded fastening between the expansion plate 3. Through the setting of the arc-shaped expansion-preventing plate 3 and the pull rod 4, the pull rod 4 is used for pulling and fixing the arc-shaped expansion-preventing plate 3, and the inhibition effect on the thermal expansion of the barrel 2 is greatly improved.
The middle part of the piston top cover 1 is provided with an upright post 11 extending to the pull rod 4, the bottom of the pull rod 4 is provided with a bolt 12 connected with the upright post 11, and the pull rod 4 is provided with a through hole 13 for the bolt 12 to be inserted. Utilize the bolt 12 to the connection of stand 11, carry out the axial positioning of piston top cap 1 on barrel 2, stable in structure reduces and maintains the frequency, and the maintenance of components of a whole that can function independently structure is convenient moreover, and use cost is low.
The top surface and the bottom surface that the board 3 is prevented expanding by the arc all are provided with the indent structure, the indent structure is rectangle recess 14, and the top surface and the bottom surface that the board 3 is prevented expanding by the arc all are provided with 3 at least rectangle recesses 14, the board 3 is prevented expanding by the arc and is put into the mould, carry out the casting of barrel 2, partly cast aluminium material fills in getting into rectangle recess 14, strengthened the arc and prevented expanding plate 3 and barrel 2's combination effect, prevent expanding on the basis of preventing of board 3 at the arc, utilize rectangle recess 14 to partly cast aluminium material spacing, promote the effect of restraining 2 lateral walls inflation of barrel.
Piston top cap 1 and spacing collar 6 are integrated aluminum alloy structure, light in weight, and structural strength is high moreover.
Be provided with gas ring groove 15 and oil ring groove 16 on the excircle of barrel 2, gas ring groove 15 is located oil ring groove 16's top, carries out the installation of gas ring and oil ring respectively, promotes piston motion's gas tightness, reduces the machine oil loss.
The arc-shaped expansion-preventing plate 3 and the pull rod 4 are made of metal materials with low expansion coefficients, such as iron-nickel alloy, so that the problem of thermal expansion deformation is solved.
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 17, and the top surface and the bottom surface of the arc-shaped expansion-preventing plate 3 are both provided with at least triangular grooves 17, the arc-shaped expansion-preventing plate 3 is placed into a mold, casting of the cylinder 2 is performed, and part of the cast aluminum material enters the triangular grooves 17 for filling, so that the combination effect of the arc-shaped expansion-preventing plate 3 and the cylinder 2 is enhanced.
To sum up, the utility model provides an anti-expansion split piston, utilize the cooperation of spacing groove and spacing collar, carry out the radial positioning of piston top cap on the barrel, strengthened the sealed of junction, and utilize the bolt to connect the upright post, carry out the axial positioning of piston top cap on the barrel, stable in structure reduces the maintenance frequency, and the maintenance of components of a whole that can function independently structure is convenient, use cost is low; prevent the setting of bloated board and pull rod through the arc, the pull rod prevents the bloated board to the arc and draws admittedly, has promoted the suppression effect to the barrel thermal energy greatly, and further top surface and the low side that prevent the bloated board through at the arc set up the indent structure, strengthen the arc and prevent the combination effect of bloated board and barrel.
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 (8)
1. An anti-expansion split piston, comprising: piston top cap, barrel, arc prevent board and pull rod that expands, piston top cap sets up the top at the barrel with one heart, the barrel top is provided with the round spacing groove, piston top cap bottom is provided with the spacing collar that the round extends to the spacing inslot, be provided with the cavity in the barrel, barrel lower part symmetry is provided with the pinhole seat that extends to the cavity in, the arc prevents that the board bilateral symmetry that expands is pre-buried in the inside wall of barrel, the pull rod level sets up in the cavity of barrel, the both ends of pull rod are connected with the arc is prevented expanding in extending to the inside wall of barrel respectively, piston top cap middle part is provided with the stand that extends to the pull rod, the pull rod bottom is provided with the bolt that is connected with the stand, the top surface and the bottom surface that the board that expand are prevented to the arc all are.
2. The split piston with expansion prevention 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 prevention plate are provided with at least 3 rectangular grooves.
3. The split piston with expansion prevention 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 prevention plate are provided with at least 3 triangular grooves.
4. The split piston with expansion prevention according to claim 1, wherein the piston top cover and the limiting ring are of an integrated aluminum alloy structure.
5. The split piston with expansion prevention according to claim 1, wherein both ends of the tie rod and the arc-shaped expansion prevention plate are fixed by welding.
6. The split piston with expansion prevention 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.
7. The split piston with expansion prevention according to claim 1, wherein a gas ring groove and an oil ring groove are provided on an outer circumference of the cylinder body, and the gas ring groove is located above the oil ring groove.
8. The split piston for preventing expansion according to claim 1, wherein a through hole into which a bolt is inserted is provided on the rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020167319.4U CN211819693U (en) | 2020-02-13 | 2020-02-13 | Anti-expansion split piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020167319.4U CN211819693U (en) | 2020-02-13 | 2020-02-13 | Anti-expansion split piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211819693U true CN211819693U (en) | 2020-10-30 |
Family
ID=72992841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020167319.4U Expired - Fee Related CN211819693U (en) | 2020-02-13 | 2020-02-13 | Anti-expansion split piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211819693U (en) |
-
2020
- 2020-02-13 CN CN202020167319.4U patent/CN211819693U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211819693U (en) | Anti-expansion split piston | |
| CN211819692U (en) | Cast aluminum piston capable of preventing thermal expansion deformation | |
| CN211819694U (en) | Top structure reinforced expansion-proof piston | |
| CN210003407U (en) | split pulling-fixing expansion-resisting piston | |
| KR950008329B1 (en) | Cast engine block and a crankshaft bearing assembly | |
| CN211819691U (en) | Cast aluminum piston based on expansion assembly | |
| CN111550325A (en) | High-strength light internal combustion engine piston | |
| CN211819696U (en) | Expansion-preventing piston with built-in heat dissipation column | |
| CN210003406U (en) | cast aluminum piston based on expansion-resistant component | |
| CN210003415U (en) | expansion-resistant pistons with enhanced heat dissipation | |
| CN211975193U (en) | Anti-expansion ring oil storage type antifriction piston | |
| CN210003408U (en) | expansion-proof reinforced cast aluminium piston | |
| CN210003417U (en) | cast aluminium piston containing expanding-proof ring | |
| CN211101418U (en) | Aluminum alloy casting mould | |
| CN210003414U (en) | cast aluminium piston with reinforced top structure | |
| CN210003413U (en) | cast aluminum piston for anti-expansion reinforcement by pin hole seat | |
| CN209800111U (en) | Screw hidden type assembled piston | |
| CN210003412U (en) | stereo anti-expansion cast aluminum piston | |
| CN210003416U (en) | cast aluminium piston resisting thermal expansion deformation | |
| CN211819688U (en) | Detachable anti-expansion piston of pin shaft fixing seat | |
| CN210003411U (en) | expansion-proof cast aluminum piston with limited tile end | |
| CN216554137U (en) | Aluminum piston with annular high-temperature-resistant welding ring welded at throat of combustion chamber | |
| CN211819686U (en) | Expansion-preventing piston assembly convenient to recycle | |
| CN211975200U (en) | Antifriction piston based on prevent expander | |
| CN209855918U (en) | Combined expansion-proof piston |
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 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |