CN211975186U - Assembly piston that oil return utilized - Google Patents
Assembly piston that oil return utilized Download PDFInfo
- Publication number
- CN211975186U CN211975186U CN202020229640.0U CN202020229640U CN211975186U CN 211975186 U CN211975186 U CN 211975186U CN 202020229640 U CN202020229640 U CN 202020229640U CN 211975186 U CN211975186 U CN 211975186U
- Authority
- CN
- China
- Prior art keywords
- piston
- oil
- ring groove
- leak protection
- skirt portion
- 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 that oil return utilized, it includes: piston top, piston leak protection portion and skirt portion, the piston top sets up the upper portion in piston leak protection portion, piston leak protection portion inner chamber lower part is provided with the inlay hole, skirt portion's top sets up in the inlay hole, be provided with the oil ring groove on the piston leak protection portion excircle, skirt portion excircle top indent is provided with the oil gallery that corresponds with the oil ring groove, be provided with the oil gallery that communicates with the oil gallery in the oil ring groove, skirt portion interval is provided with the overflow launder of radial extension. The equipment piston that the oil return utilized, when the engine cold start, lubricating oil in the oil gallery passes through the oil gallery and gets into the oil ring groove, paints formation oil film, the reducing wear problem on the cylinder body inner wall.
Description
Technical Field
The utility model relates to a piston technical field especially relates to an equipment piston that oil return utilized.
Background
The automobile piston is used for bearing gas pressure in an automobile engine, 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, beneficial to reducing energy consumption of an engine and wide in application range, but when the engine is started in a cold state, lubricating oil is poor in liquidity, so that the lubricating oil is difficult to fully reach the inner wall of the cylinder body to form an oil film, and abrasion between the piston and the inner wall of the cylinder body is aggravated.
In addition, in the process of piston movement, redundant lubricating oil on the inner wall of the cylinder body needs to be scraped, and the redundant lubricating oil is guided into the inner cavity of the piston by using an oil return hole, flows back to the bottom of an engine and is recycled.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an equipment piston that oil return utilized utilizes the oil return to carry out the lubrication when cold start, reducing wear.
To achieve the purpose, the utility model adopts the following technical proposal:
an assembled piston for return oil utilization, comprising: piston top, piston leak protection portion and skirt portion, the piston top sets up the upper portion in piston leak protection portion, piston leak protection portion inner chamber lower part is provided with the inlay hole, skirt portion's top sets up in the inlay hole, be provided with the oil ring groove on the piston leak protection portion excircle, skirt portion excircle top indent is provided with the oil gallery that corresponds with the oil ring groove, be provided with the oil gallery that communicates with the oil gallery in the oil ring groove, skirt portion interval is provided with the overflow launder of radial extension.
The top of the piston and the leakage-proof part of the piston are of an integrated aluminum alloy structure.
The outer circle lower portion of the piston leakage-proof portion is concavely provided with a circle avoiding groove, a threaded hole pointing to the skirt portion of the piston is formed in the avoiding groove, a positioning blind hole corresponding to the threaded hole is formed in the outer circle of the skirt portion of the piston, and a positioning pin column extending into the positioning blind hole is arranged in the threaded hole.
And a stud is arranged in the threaded hole to limit the positioning pin.
Wherein, be provided with the gas ring groove that is located the oil ring groove top on the piston leak protection portion excircle.
The piston is characterized in that pin bosses are symmetrically arranged in the piston skirt, pin shaft mounting holes are formed in the pin bosses, and clamp spring mounting grooves are formed in the pin shaft mounting holes.
The utility model has the advantages that: during the movement process of the piston, redundant lubricating oil on the inner wall of a cylinder body is scraped by a piston ring, redundant lubricating oil is guided into an oil return groove by an oil return hole, the oil return groove is full and flows out through an overflow groove, when an engine is in cold start, the lubricating oil in the oil return groove enters an oil ring groove through the oil return hole, an oil film is formed on the inner wall of the cylinder body by coating, the abrasion problem is reduced, a piston skirt can be detached, and the recycling performance is good.
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.
The assembled piston for oil return use shown in fig. 1 includes: piston top 1, piston leak protection portion 2 and piston skirt portion 6, piston top 1 sets up on the upper portion of piston leak protection portion 2, piston top 1 and 2 integration aluminum alloy structures of piston leak protection portion, structural strength is high, and the dead weight is light moreover, is favorable to reducing the engine energy consumption.
The lower part of the inner cavity of the piston leakage-proof part 2 is provided with an embedding hole 13, the top of the piston skirt part 6 is arranged in the embedding hole 13, the assembly is convenient, the piston skirt part 6 can be detached, and the reutilization property is good. 2 excircle lower part indents of piston leak protection portion are provided with the round and dodge groove 5, dodge and be provided with the screw hole of directional skirt portion 66 in the groove 5, be provided with the location blind hole that corresponds with the screw hole on the 6 excircle of skirt portion, be provided with the locating pin post 15 that extends to in the location blind hole in the screw hole, carry out the axial spacing, stable in structure of piston leak protection portion 2 and skirt portion 6 through locating pin post 15. The threaded hole is internally provided with the stud 14 for limiting the positioning pin 15, so that the positioning pin 15 is prevented from falling off, the positioning pin 15 is taken out after the stud 14 is disassembled, the piston skirt part 6 can be disassembled, the reutilization property is good, and the maintenance cost is reduced.
An oil ring groove 4 is formed in the outer circle of the piston leakage-proof portion 2, so that the installation of a combined oil ring is facilitated, and redundant lubricating oil in the cylinder body is scraped. And an air ring groove 11 positioned above the oil ring groove 4 is arranged on the excircle of the piston leakage-proof part 2, so that the air ring is installed, and the air tightness is improved.
The piston is characterized in that an oil return groove 3 corresponding to the oil ring groove 4 is concavely arranged on the top of the outer circle of the piston skirt portion 6, an oil return hole 12 communicated with the oil return groove 3 is formed in the oil ring groove 4, redundant lubricating oil on the inner wall of the cylinder body is scraped by a piston ring in the piston movement process, and the redundant lubricating oil is guided into the oil return groove 3 by the oil return hole 12. And overflow grooves 10 extending in the radial direction are arranged at intervals on the piston skirt, and after the oil return groove 3 is filled, redundant lubricating oil flows out through the overflow grooves 10 and flows back to the inside of the engine for cyclic utilization. When the engine is in cold start, lubricating oil in the oil return groove 3 enters the oil ring groove through the oil return hole 12 and is coated on the inner wall of the cylinder body to form an oil film, so that the abrasion problem is reduced.
The piston skirt 6 is provided with pin bosses 9 symmetrically, pin shaft mounting holes 8 are formed in the pin bosses 9, so that the pin shaft is convenient to mount, clamp spring mounting grooves 7 are formed in the pin shaft mounting holes 8, the clamp springs are convenient to mount, and the two ends of the pin shaft are limited.
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 for return oil utilization, comprising: piston top, piston leak protection portion and skirt portion, the piston top sets up the upper portion in piston leak protection portion, piston leak protection portion inner chamber lower part is provided with the inlay hole, skirt portion's top sets up in the inlay hole, be provided with the oil ring groove on the piston leak protection portion excircle, skirt portion excircle top indent is provided with the oil gallery that corresponds with the oil ring groove, be provided with the oil gallery that communicates with the oil gallery in the oil ring groove, skirt portion interval is provided with the overflow launder of radial extension.
2. The assembled piston for oil return utilization of claim 1, wherein the piston top and the piston leakage prevention portion are of an integrated aluminum alloy structure.
3. The assembled piston that oil return utilized of claim 1, characterized in that, piston leak protection portion excircle lower part indent is provided with round dodge groove, be provided with the screw hole of directional skirt portion in the dodge groove, be provided with the location blind hole that corresponds with the screw hole on the skirt portion excircle, be provided with the location pin post that extends to in the location blind hole in the screw hole.
4. The assembled piston for oil return utilization according to claim 3, characterized in that a stud is arranged in the threaded hole for limiting the positioning pin.
5. The assembled piston for oil return utilization according to claim 1, wherein an air ring groove located above the oil ring groove is formed on an outer circle of the piston leakage-proof portion.
6. The assembled piston for oil return utilization according to claim 1, characterized in that pin bosses are symmetrically arranged in the piston skirt portion, pin shaft mounting holes are arranged in the pin bosses, and clamp spring mounting grooves are arranged in the pin shaft mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020229640.0U CN211975186U (en) | 2020-02-29 | 2020-02-29 | Assembly piston that oil return utilized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020229640.0U CN211975186U (en) | 2020-02-29 | 2020-02-29 | Assembly piston that oil return utilized |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211975186U true CN211975186U (en) | 2020-11-20 |
Family
ID=73376865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020229640.0U Expired - Fee Related CN211975186U (en) | 2020-02-29 | 2020-02-29 | Assembly piston that oil return utilized |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211975186U (en) |
-
2020
- 2020-02-29 CN CN202020229640.0U patent/CN211975186U/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: 20201120 Termination date: 20210228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |