CN220890338U - Wear-resisting piston structure - Google Patents
Wear-resisting piston structure Download PDFInfo
- Publication number
- CN220890338U CN220890338U CN202322762065.7U CN202322762065U CN220890338U CN 220890338 U CN220890338 U CN 220890338U CN 202322762065 U CN202322762065 U CN 202322762065U CN 220890338 U CN220890338 U CN 220890338U
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- piston
- oil
- hole
- skirt
- wall
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- 239000003921 oil Substances 0.000 claims description 153
- 239000010705 motor oil Substances 0.000 claims description 34
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The application relates to the technical field of pistons, in particular to a wear-resistant piston structure which comprises a piston top, a piston head and a piston skirt, wherein an oil conveying hole is formed in the side wall of the piston skirt, and an oil conveying groove connected with the oil conveying hole is formed in the outer wall of the piston skirt. The application has the effect of improving the wear resistance of the piston.
Description
Technical Field
The application relates to the technical field of pistons, in particular to a wear-resistant piston structure.
Background
The piston is a part which reciprocates in a cylinder of an automobile engine and is used for bearing combustion pressure in the cylinder and transmitting the force to a crankshaft through a piston pin and a connecting rod, and the piston is required to work under the conditions of high temperature, high pressure and high load, so that the requirement on the piston is relatively high, and meanwhile, the piston can be worn in the process of moving the cylinder.
At present, the piston material has enough strength and rigidity, smaller density and expansion coefficient, and the common material is aluminum alloy. The generally known pistons are composed of a top, a head and a skirt, the piston skirt being in contact with the cylinder inner wall and guiding the movement of the piston. In order to reduce the abrasion between the piston and the cylinder and prolong the service lives of the piston and the cylinder, the prior piston is generally provided with an oil guide hole on the head part.
In the related art, when the piston works, engine oil is thrown to the outer wall of the piston through the oil guide hole, so that oil film lubrication is attached to the contact surface of the cylinder and the outer wall of the piston, and when the oil film lubrication is insufficient, the outer wall of the piston and the cylinder are worn.
Disclosure of utility model
In order to improve the wear resistance of the piston, the application provides a wear-resistant piston structure.
The application provides a wear-resistant piston structure, which adopts the following technical scheme:
The utility model provides a wear-resisting piston structure, includes piston top, piston head and piston skirt, the oil transfer hole has been seted up on the piston skirt lateral wall, set up on the piston skirt outer wall with the oil transfer groove that the oil transfer hole links up.
Through adopting above-mentioned technical scheme, when the piston during operation, the oil of landing on the piston inner wall reaches the oil groove through the oil delivery hole on the skirt portion lateral wall, and the oil groove provides the engine oil for the piston outer wall, makes the outer wall contact more engine oil of piston for lubricate the piston and improve the heat dispersion of piston, and then alleviate the wearing and tearing of piston, improve the life of piston.
Optionally, an oil collecting plate for collecting engine oil is fixedly connected to the inner wall of the skirt portion of the piston, and one side, close to the top of the piston, of the oil collecting plate is connected with oil delivery Kong Xianjie.
By adopting the technical scheme, the oil collecting plate can collect the engine oil on the inner wall of the piston skirt more comprehensively and guide the engine oil to the vicinity of the oil delivery hole.
Optionally, the oil collecting plate is arc and the middle part is to keeping away from the direction protrusion of piston top, the oil delivery hole butt joint is in oil collecting plate middle part position.
By adopting the technical scheme, the oil collecting plate is beneficial to guiding engine oil to the oil inlet of the oil conveying hole.
Optionally, the oil collecting plate is obliquely arranged at one end far away from the piston skirt part in a direction approaching to the top of the piston.
Through adopting above-mentioned technical scheme, promoted the collection effect of machine oil to can let the machine oil flow direction collection oiled board middle part.
Optionally, the distance from the connecting point of the oil delivery groove and the oil delivery hole to the top of the piston is smaller than the distance from other points on the oil delivery groove to the top of the piston.
By adopting the technical scheme, the oil outlet of the oil delivery hole is communicated with the oil delivery groove, so that engine oil flowing out of the oil delivery hole can flow to the end part of the oil delivery groove conveniently.
Optionally, the oil delivery groove is the chevron, the oil-out of oil delivery groove midpoint and oil delivery hole links up, the both ends of oil delivery groove extend to the direction that keeps away from the piston top.
By adopting the technical scheme, the engine oil flows to the oil delivery groove from the oil outlet of the oil delivery hole, and the engine oil flows to the two ends of the oil delivery groove along the midpoint of the oil delivery groove, so that the engine oil is more fully acted on the outer wall of the piston skirt, and further the outer wall of the piston skirt is lubricated.
Optionally, the oil delivery hole inclines to set up, the distance of the one end that the oil delivery hole is close to the piston inside to the piston top is less than the one end that the oil delivery hole is close to the piston outside to the distance at piston top.
By adopting the technical scheme, the engine oil collected by the oil collecting plate can smoothly reach the oil conveying groove through the oil conveying hole.
Optionally, an oil guide needle is arranged in the oil delivery hole, and the needle point of the oil guide needle faces the inside of the piston.
By adopting the technical scheme, the oil guide needle is used for destroying the oil film of the engine oil, so that the engine oil passes through the oil delivery hole under the guiding action of the oil guide needle.
In summary, the present application includes at least one of the following beneficial technical effects:
When the piston works, engine oil sliding on the inner wall of the piston is collected through the oil collecting plate and reaches the outer wall of the skirt part of the piston through the oil conveying hole and the oil conveying groove, so that more engine oil is adhered to the outer wall of the piston, the lubricating performance of the outer wall of the piston is improved, and the wear resistance of the piston is improved;
The oil collecting plate can collect the engine oil on the inner wall of the skirt part of the piston more comprehensively, so that the oil collecting effect is improved, the engine oil can flow to the middle part of the oil collecting plate, and the engine oil is guided to the vicinity of the oil delivery hole;
An oil guide needle is arranged in a channel of the oil delivery hole and used for destroying an oil film of engine oil, so that the engine oil passes through the oil delivery hole under the guiding action of the oil guide needle.
Drawings
Fig. 1 is a schematic overall structure of a wear-resistant piston structure according to an embodiment of the present application.
Fig. 2 is a cross-sectional view of a wear resistant piston structure in accordance with an embodiment of the present application.
Fig. 3 is an enlarged schematic view of the portion a in fig. 2.
Reference numerals illustrate: 1. a piston top; 2. a piston head; 20. a heat insulation tank; 21. a first air ring groove; 22. a second air ring groove; 23. an oil ring groove; 24. an oil guide hole; 3. a piston skirt; 30. a piston pin hole; 31. an oil delivery hole; 32. an oil delivery groove; 4. a piston pin boss; 5. an oil collecting plate; 6. an oil guide needle.
Detailed Description
The present application will be described in further detail with reference to fig. 1 to 3.
The embodiment of the application discloses a wear-resistant piston structure. Referring to fig. 1 and 2, the wear resistant piston structure comprises a piston top 1, a piston head 2 and a piston skirt 3; the piston head 2 is provided with a heat insulation groove 20, a first air ring groove 21, a second air ring groove 22 and an oil ring groove 23 in sequence around the side wall of the piston head 2, the side wall of the piston head 2 is provided with an oil guide hole 24, one end of the oil guide hole 24 is communicated with the oil ring groove 23, and the other end is communicated with the interior of the piston; the heat insulation groove 20 can lose part of the heat load, so that the heat dissipation performance of the piston head 2 is improved; the first air ring groove 21 and the second air ring groove 22 are used for accommodating and fixing the air ring; the oil ring groove 23 is used for accommodating and fixing an oil ring; the oil guide hole 24 is used for throwing engine oil to the outer wall of the piston through the oil guide hole 24 when the piston works; two symmetrically arranged piston pin holes 30 are formed in the piston skirt 3 for mounting and dismounting the piston pin.
Referring to fig. 2, a piston pin boss 4 is welded on the inner wall of the piston skirt 3, and the piston pin boss 4 communicates with a piston pin hole 30 for fixing a piston pin; an oil collecting plate 5 is welded on the inner wall of the piston skirt 3, the oil collecting plate 5 is arc-shaped and is positioned on one side of the piston pin seat 4, which is away from the piston top 1, the middle part of the oil collecting plate 5 protrudes towards the direction away from the piston top 1, and one end of the oil collecting plate 5, which is away from the piston skirt 3, is obliquely arranged towards the direction close to the piston top 1 and is used for collecting engine oil sliding on the inner wall of the piston skirt 3; the side wall of the piston skirt 3 is provided with an oil delivery hole 31, one end of the oil delivery hole 31, which is close to the oil collecting plate 5, is connected with the side surface of the oil collecting plate 5, which is close to the piston top 1, the oil delivery hole 31 is obliquely arranged, the distance from an oil inlet of the oil delivery hole to the piston top 1 is smaller than the distance from an oil outlet of the oil delivery hole to the piston top 1, and engine oil can conveniently flow to the outer wall of the piston skirt 3.
Referring to fig. 2 and 3, an oil guide needle 6 is disposed in a channel of the oil delivery hole 31, a needle tip of the oil guide needle 6 faces an oil inlet end of the oil delivery hole 31 and is suspended, a needle tail of the oil guide needle 6 is welded on a wall of the oil delivery hole 31, and the oil guide needle 6 is used for breaking an oil film of engine oil, so that the engine oil passes through the oil delivery hole 31 under the guiding action of the oil guide needle 6.
Referring to fig. 1 and 3, two oil delivery grooves 32 are formed in the outer wall of the piston skirt 3, the oil delivery grooves 32 are in a herringbone shape, the middle points of the oil delivery grooves 32 are connected with oil outlets of the oil delivery holes 31, two ends of the oil delivery grooves 32 extend towards the direction away from the top 1 of the piston, oil can flow towards two ends of the oil delivery grooves 32 along the center of the oil delivery grooves 32, the cross section of each oil delivery groove 32 is semicircular, the oil delivery grooves 32 can enable the oil flowing out of the oil delivery holes 31 to be released on the outer wall of the piston skirt 3, so that the oil on the outer wall of the piston skirt 3 is increased, and when the piston works, the outer wall of the piston contacts more oil for lubricating the piston and improving the heat dissipation capacity of the piston, and further abrasion of the piston is slowed down.
The implementation principle of the wear-resistant piston structure provided by the embodiment of the application is as follows: when the piston works, the oil collecting plate 5 on the inner wall of the piston skirt 3 collects the sliding engine oil on the inner wall of the piston skirt 3, the collected engine oil flows to the oil conveying groove 32 through the oil conveying hole 31, the oil guide needle 6 arranged in the oil conveying hole 31 is used for breaking an oil film, the oil guide needle 6 guides the engine oil to flow out of the oil conveying hole 31, and the engine oil flows into the oil conveying groove 32; the structure can enable the engine oil on the inner wall of the piston skirt 3 to flow to the outer wall of the piston skirt 3, so that more engine oil is smeared on the outer wall of the piston skirt 3, and when the piston works, the outer wall of the piston contacts with more engine oil for lubricating the piston and improving the heat dissipation capacity of the piston, thereby reducing the abrasion of the piston skirt 3 and prolonging the service life of the piston.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. A wear resistant piston structure, characterized by: the oil delivery device comprises a piston top (1), a piston head (2) and a piston skirt (3), wherein an oil delivery hole (31) is formed in the side wall of the piston skirt (3), and an oil delivery groove (32) connected with the oil delivery hole (31) is formed in the outer wall of the piston skirt (3).
2. A wear resistant piston structure in accordance with claim 1, wherein: an oil collecting plate (5) for collecting engine oil is fixedly connected to the inner wall of the piston skirt (3), and one side, close to the piston top (1), of the oil collecting plate (5) is connected with an oil conveying hole (31).
3. A wear resistant piston structure in accordance with claim 2, wherein: the oil collecting plate (5) is arc-shaped, the middle part of the oil collecting plate protrudes towards the direction away from the top (1) of the piston, and the oil conveying hole (31) is butted at the middle part of the oil collecting plate (5).
4. A wear resistant piston structure in accordance with claim 2 or 3, wherein: the oil collecting plate (5) is obliquely arranged at one end far away from the piston skirt (3) in a direction approaching the piston top (1).
5. A wear resistant piston structure in accordance with claim 1, wherein: the distance from the engagement point of the oil delivery groove (32) and the oil delivery hole (31) to the piston top (1) is smaller than the distance from other points on the oil delivery groove (32) to the piston top (1).
6. A wear resistant piston structure in accordance with claim 5, wherein: the oil conveying groove (32) is in a herringbone shape, the middle point of the oil conveying groove (32) is connected with the oil outlet of the oil conveying hole (31), and two ends of the oil conveying groove (32) extend towards the direction away from the top (1) of the piston.
7. A wear resistant piston structure in accordance with claim 1, wherein: the oil delivery hole (31) is obliquely arranged, and the distance from one end, close to the interior of the piston, of the oil delivery hole (31) to the top (1) of the piston is smaller than the distance from one end, close to the exterior of the piston, of the oil delivery hole (31) to the top (1) of the piston.
8. A wear resistant piston structure in accordance with claim 1, wherein: an oil guide needle (6) is arranged in the oil delivery hole (31), and the needle point of the oil guide needle (6) faces the inside of the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322762065.7U CN220890338U (en) | 2023-10-16 | 2023-10-16 | Wear-resisting piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322762065.7U CN220890338U (en) | 2023-10-16 | 2023-10-16 | Wear-resisting piston structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220890338U true CN220890338U (en) | 2024-05-03 |
Family
ID=90869310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322762065.7U Active CN220890338U (en) | 2023-10-16 | 2023-10-16 | Wear-resisting piston structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890338U (en) |
-
2023
- 2023-10-16 CN CN202322762065.7U patent/CN220890338U/en active Active
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