CN214500014U - Oil cylinder ceramic aluminum piston - Google Patents
Oil cylinder ceramic aluminum piston Download PDFInfo
- Publication number
- CN214500014U CN214500014U CN202120691367.8U CN202120691367U CN214500014U CN 214500014 U CN214500014 U CN 214500014U CN 202120691367 U CN202120691367 U CN 202120691367U CN 214500014 U CN214500014 U CN 214500014U
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- Prior art keywords
- piston
- sealing ring
- ring
- piston body
- spiral oil
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- 239000000919 ceramic Substances 0.000 title claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 230000007704 transition Effects 0.000 claims abstract description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 4
- 238000003754 machining Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 29
- 239000010720 hydraulic oil Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
An oil cylinder ceramic aluminum piston is suitable for large load change, long stroke and high-speed motion and mainly comprises a piston body, wherein a sealing ring and a dirt accommodating ring are arranged on the excircle of the piston body; spiral oil cavities are formed in two sides of an excircle sealing ring of the piston body; the outer diameter of the piston body is in transition fit with the inner hole of the cylinder barrel; the inner hole of the piston is matched with the piston rod; piston body adopts ceramic aluminum alloy CA7075-1 material, reaches transition fit size required precision through processing, and sealing ring both ends spiral oil pocket is obstructed with body terminal surface and sealed annular, the sealing ring with receive dirty ring and include that one sealing ring and twice receive dirty ring, by the top to down in proper order for receiving dirty ring, spiral oil pocket, sealing ring, spiral oil pocket, receive dirty ring.
Description
The technical field is as follows:
the technology relates to the technical field of hydraulic oil cylinders, in particular to a ceramic aluminum piston which is suitable for a hydraulic oil cylinder with large load change, long stroke and high-speed motion.
Background art:
the hydraulic cylinder is widely applied to various industries as a power execution element, in the hydraulic cylinder, a piston is an important part of the hydraulic cylinder, oil on two sides needs to be prevented from communicating, reciprocating motion is carried out in a cylinder barrel to prevent the inner wall of the cylinder barrel from being pulled, the existing piston structure is that a sealing groove and a supporting ring are arranged on a steel piston body, the supporting ring is made of various materials such as phenolic clamping cloth and poly clamping aldehyde, and the phenolic clamping cloth is the most. In order to prevent the cylinder barrel from being damaged by pulling of the piston body, the outer diameter of the steel piston body is far smaller than the inner diameter of the cylinder barrel, and because a gap exists between the outer diameter of the steel piston body and the outer diameter of the piston body, when the piston is pressed, a sealing element in a sealing groove is easy to extrude, and liquid at two ends of the piston is mixed; under the use condition of some special industries, the oil cylinder is large in lateral load, the force borne by the supporting ring is insufficient, the oil cylinder is easy to damage, the stress of the sealing element is uneven, the unilateral stress is caused, the sealing element is damaged, the leakage in the oil cylinder is caused, and the service life of the oil cylinder is greatly reduced.
The invention content is as follows:
aiming at the defects of the prior art, the technology provides a ceramic aluminum piston of an oil cylinder, and the ceramic aluminum piston is particularly suitable for hydraulic oil cylinder pistons which have large load change, long stroke and high-speed motion.
In order to achieve the purpose, the ceramic aluminum piston for the oil cylinder is a new material, and comprises a piston body, wherein a sealing ring and a dirt accommodating ring are arranged on the excircle of the piston body; spiral oil cavities are formed in two sides of an excircle sealing ring of the piston body; the outer diameter of the piston body is in transition fit with the inner hole of the cylinder barrel; the inner hole of the piston is matched with the piston rod.
The oil cylinder ceramic aluminum piston is characterized in that a piston body is made of ceramic aluminum alloy CA7075-1 materials, the requirement of transition fit size precision is met through machining, spiral oil cavities at two ends of a sealing ring are communicated with the end face of the piston body and a sealing ring groove, the spiral oil cavities are formed by multi-thread turning, and 3x 20-degree chamfers are arranged at two ends of the piston body.
The utility model provides an oil cylinder pottery aluminum piston, is equipped with the sealing ring on the piston body excircle, receives dirty ring sum spiral oil pocket, the sealing ring with receive dirty ring including one sealing ring and twice receive dirty ring, by the top to down in proper order for receiving dirty ring, spiral oil pocket, sealing ring, spiral oil pocket, receive dirty ring.
Compared with the prior art, the ceramic aluminum piston has the beneficial effects that: the piston body is made of a new material, namely ceramic aluminum alloy CA7075-1, and the piston body is high in mechanical property and specifically comprises the following components:
the piston body material CA7075-1 does not deform along with the change of temperature, has good wear resistance, and fills the problem that a steel piston is used due to poor mechanical property and insufficient strength of nonferrous metals; the piston body meets the requirement of transition fit size precision through processing and cylinder barrel inner holes, the supporting strength is high, and the sealing element is not easy to extrude; the service life of the hydraulic oil cylinder is greatly prolonged, and the maintenance cost of the hydraulic cylinder is reduced.
Drawings
FIG. 1 is a schematic structural view of a ceramic-aluminum piston for an oil cylinder according to the present invention;
in the figure: piston body 1, sealing ring 2, receive dirty ring 3, spiral oil pocket 4.
Detailed Description
The cylinder ceramic aluminum piston of the present technology is further described in detail with reference to the accompanying drawings and examples, and as shown in the drawings, the cylinder ceramic aluminum piston is structurally characterized in that: 1 external diameter of piston body and cylinder hole form transition fit, and the turning has sealing ring 2 and receives dirty ring 3 on the 1 excircle of piston body, and 2 both sides of sealing ring are equipped with spiral oil chamber 4, 3 both ends spiral oil chamber 4 of sealing ring are not logical with 1 terminal surface of piston body and 2 grooves of sealing ring, and 1 both ends of piston body are equipped with 3x20 degree chamfers. When the piston works, pressure hydraulic oil enters the oil cylinder, the piston is pressed, the piston body 1 moves in the oil cylinder, the dirt containing ring 3, the spiral oil cavity 4, the sealing ring 2, the spiral oil cavity 4 and the dirt containing ring 3 are sequentially arranged from the top of the piston body 1 to the bottom, the dirt containing ring 3 on the two sides of the piston body 1 can block pollutants in oil, the oil enters the spiral oil cavity 4 through the dirt containing ring 3, and the inner hole of the cylinder barrel forms transition fit with the inner hole of the cylinder barrel to form transition fit, so that the oil cylinder is better supported; the sealing ring 2 effectively prevents the oil from communicating, greatly prolongs the service life of the hydraulic cylinder, and reduces the maintenance cost of the hydraulic cylinder.
Claims (3)
1. An oil cylinder ceramic aluminum piston comprises a piston body, wherein a sealing ring and a dirt containing ring are arranged on the excircle of the piston body; spiral oil cavities are formed in two sides of an excircle sealing ring of the piston body; the outer diameter of the piston body is in transition fit with the inner hole of the cylinder barrel; the inner hole of the piston is matched with the piston rod.
2. The ceramic aluminum piston of the oil cylinder as claimed in claim 1, wherein the piston body is made of ceramic aluminum alloy CA7075-1, the dimensional accuracy requirement of transition fit is achieved by machining, the spiral oil cavities at two ends of the sealing ring are not communicated with the end surface of the body and the sealing ring groove, the spiral oil cavities are formed by multi-thread turning, and chamfers of 3x20 degrees are arranged at two ends of the piston body.
3. The oil cylinder ceramic aluminum piston as claimed in claim 1, wherein the piston body is provided with a sealing ring, a dirt containing ring and a spiral oil cavity on the excircle, the sealing ring and the dirt containing ring comprise one sealing ring and two dirt containing rings, and the dirt containing ring, the spiral oil cavity, the sealing ring, the spiral oil cavity and the dirt containing ring are arranged from top to bottom in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120691367.8U CN214500014U (en) | 2021-04-07 | 2021-04-07 | Oil cylinder ceramic aluminum piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120691367.8U CN214500014U (en) | 2021-04-07 | 2021-04-07 | Oil cylinder ceramic aluminum piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214500014U true CN214500014U (en) | 2021-10-26 |
Family
ID=78201965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120691367.8U Active CN214500014U (en) | 2021-04-07 | 2021-04-07 | Oil cylinder ceramic aluminum piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214500014U (en) |
-
2021
- 2021-04-07 CN CN202120691367.8U patent/CN214500014U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231012 Address after: 266199 No. 318, Jinshui Road, Licang District, Qingdao, Shandong Patentee after: Qingdao Longshenghe Electromechanical Equipment Co.,Ltd. Address before: 075000 No.1, nancaiyuan street, Qiaoxi District, Zhangjiakou City, Hebei Province Patentee before: Zhangjiakou Kaihang Hydraulic Technology Co.,Ltd. Patentee before: Beijing Aerospace Ruitai Hydraulic Technology Co.,Ltd. |