CN203868022U - Stable type hydraulic cylinder - Google Patents
Stable type hydraulic cylinder Download PDFInfo
- Publication number
- CN203868022U CN203868022U CN201420115807.5U CN201420115807U CN203868022U CN 203868022 U CN203868022 U CN 203868022U CN 201420115807 U CN201420115807 U CN 201420115807U CN 203868022 U CN203868022 U CN 203868022U
- Authority
- CN
- China
- Prior art keywords
- piston
- oil
- ring groove
- hydraulic cylinder
- stable type
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000004512 die casting Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a stable type hydraulic cylinder which comprises a piston, an oil return cavity, a cylinder cover and an oil outlet formed in the cylinder cover. The piston comprises a piston body, the piston body comprises a piston groove, a piston head, a piston oil ring groove, a piston skirt portion, an oil passing hole and a piston pin hole, a piston rod is connected in the piston pin hole, the front end of the piston rod stretches out of the piston pin hole to form a boss, the piston oil ring groove is formed in the piston body, the piston oil ring groove is formed between the piston head and the piston skirt portion, the shape of the piston skirt portion is formed by connecting two arcs and two parallel line segments, the oil passing hole is formed in the arc on one side of the piston skirt portion, and the oil passing hole penetrates through the piston groove, the piston oil ring groove and the piston skirt portion. The structure is simple, smoothness and compactness are high, powder is effectively prevented from remaining in the piston groove to block an oil hole, the rejection rate of the piston is greatly reduced, and the service life is prolonged.
Description
Technical field
The utility model relates to a kind of stable type oil hydraulic cylinder.
Background technique
In hydraulicdriven process, for preventing that hydraulic cylinder piston from when the backhaul, moving to end of travel, the too high shock cylinder cap of speed, cause hydraulic shock and noise, the phenomenon of even damaging, need to arrange damping device conventionally, but generally the damping device in use just relies on and reduces fuel-displaced flow merely, increase back oil cavity pressure, thereby slow down piston speed, but cannot accomplish to adjust compensator or trimmer pressure in good time, very flexible, Applicable scope is narrower.
And the piston top of conventional piston and piston skirt are provided with a plurality of groove structures, cause this kind of piston complexity, cost is higher, and research is found, piston ring is more than there is no need together, once because upper track Piston Ring Fault, other piston ring just can not play seal action.The smooth degree of fiting of traditional piston is not high, and sealability is low, and in groove, easy residual powder, stops up oilhole, affects gas permeability and oil pump capacity, thereby has shortened the working life of piston.
Summary of the invention
The utility model provides a kind of stable type oil hydraulic cylinder, improves the stability of oil hydraulic cylinder operation, noise reduction, extends its working life.
The technological scheme that the utility model adopts is to achieve the above object of the invention: a kind of stable type oil hydraulic cylinder, the oil outlet that comprises piston, oil back chamber, cylinder cap and be arranged on described cylinder cap;
Described piston comprises piston only, piston only comprises pistion recess, piston crown, piston oil ring groove, piston skirt, oil through, piston pin hole, in piston pin hole, be connected with piston rod, the front end of piston rod stretches out piston pin hole and forms boss, described piston only is provided with piston oil ring groove one, described piston oil ring groove is between piston crown and piston skirt, the shape of described piston skirt is connected and composed by two circular arcs and two parallel segments, described oil through is positioned at one side circular arc place, piston skirt, described oil through is through pistion recess, piston oil ring groove, piston skirt.
Further, described cylinder cap is provided with cavity, and seal ring is housed on cavity, between cavity and oil outlet, is provided with first flow, and needle regulator is housed on cylinder cap, is provided with the second runner between oil back chamber and needle regulator.
Further, the distance between two parallel segments of described piston skirt is 15mm.
Further, the diameter of described oil through is 2.5mm.
Further, described piston only is by aluminium die-casting moulding.
The beneficial effects of the utility model are: simple in structure, smooth tightness is high, effectively prevent that powder from remaining in obstruction oilhole in pistion recess, greatly reduce the scrappage of piston, have extended working life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of piston.
Wherein, 1, cylinder cap, 2, oil outlet, 3, cavity, 4, throttle valve, 5, piston, 51, piston only, 52, piston oil ring groove, 53, pistion recess, 54, oil through.
Embodiment
As shown in Figure 1, a kind of stable type oil hydraulic cylinder, the oil outlet 2 that comprises piston 5, oil back chamber, cylinder cap 1 and be arranged on described cylinder cap 11.
As shown in Figure 2, piston 5 comprises piston only 51, piston only 51 comprises pistion recess 53, piston crown, piston oil ring groove 52, piston skirt, oil through 54, piston pin hole, in piston pin hole, be connected with piston rod, the front end of piston rod stretches out piston pin hole and forms boss, described piston only 51 is provided with piston oil ring groove 52 one, described piston oil ring groove 52 is between piston crown and piston skirt, the shape of described piston skirt is connected and composed by two circular arcs and two parallel segments, described oil through 54 is positioned at one side circular arc place, piston skirt, described oil through 54 is through pistion recess 53, piston oil ring groove 52, piston skirt.
Cylinder cap 1 is provided with cavity 3, on cavity 3, seal ring is housed, and between cavity 3 and oil outlet 2, is provided with first flow, and needle regulator 4 is housed on cylinder cap 1, between oil back chamber and needle regulator 4, is provided with the second runner.
Distance between two parallel segments of piston skirt is 15mm.The diameter of oil through 54 is 2.5mm.Piston only 51 is by aluminium die-casting moulding.
Simple in structure, smooth tightness is high, effectively prevents that powder from remaining in the interior obstruction oilhole of pistion recess 53, greatly reduces the scrappage of piston, has extended working life.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technician in the art, all should fall in protection domain of the present utility model on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment according to design of the present utility model.
Claims (5)
1. a stable type oil hydraulic cylinder, is characterized in that, the oil outlet that comprises piston, oil back chamber, cylinder cap and be arranged on described cylinder cap;
Described piston comprises piston only, piston only comprises pistion recess, piston crown, piston oil ring groove, piston skirt, oil through, piston pin hole, in piston pin hole, be connected with piston rod, the front end of piston rod stretches out piston pin hole and forms boss, described piston only is provided with piston oil ring groove one, described piston oil ring groove is between piston crown and piston skirt, the shape of described piston skirt is connected and composed by two circular arcs and two parallel segments, described oil through is positioned at one side circular arc place, piston skirt, described oil through is through pistion recess, piston oil ring groove, piston skirt.
2. a kind of stable type oil hydraulic cylinder according to claim 1, is characterized in that, described cylinder cap is provided with cavity, seal ring is housed on cavity, between cavity and oil outlet, be provided with first flow, needle regulator is housed on cylinder cap, between oil back chamber and needle regulator, be provided with the second runner.
3. a kind of stable type oil hydraulic cylinder according to claim 1, is characterized in that, the distance between two parallel segments of described piston skirt is 15mm.
4. a kind of stable type oil hydraulic cylinder according to claim 1, is characterized in that, the diameter of described oil through is 2.5mm.
5. a kind of stable type oil hydraulic cylinder according to claim 1, is characterized in that, described piston only is by aluminium die-casting moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420115807.5U CN203868022U (en) | 2014-03-14 | 2014-03-14 | Stable type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420115807.5U CN203868022U (en) | 2014-03-14 | 2014-03-14 | Stable type hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203868022U true CN203868022U (en) | 2014-10-08 |
Family
ID=51648981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420115807.5U Expired - Fee Related CN203868022U (en) | 2014-03-14 | 2014-03-14 | Stable type hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203868022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821792A (en) * | 2014-03-14 | 2014-05-28 | 汤海涛 | Stable hydraulic cylinder |
-
2014
- 2014-03-14 CN CN201420115807.5U patent/CN203868022U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821792A (en) * | 2014-03-14 | 2014-05-28 | 汤海涛 | Stable hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DATANG HULUNBEIER POWER DEVELOPMENT CO., LTD. Free format text: FORMER OWNER: TANG HAITAO Effective date: 20141211 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Ying Inventor after: Hou Yufeng Inventor before: Tang Haitao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: TANG HAITAO TO: ZHOU YING HOU YUFENG Free format text: CORRECT: ADDRESS; FROM: 224621 YANCHENG, JIANGSU PROVINCE TO: 021000 HULUNBUIR, INNER MONGOLIA AUTONOMOUS REGION |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141211 Address after: 021000 No. 106, Zhalantun Road, Hailar District, the Inner Mongolia Autonomous Region, Hulun Buir Patentee after: Datang Hulun Buir Energy Development Co., Ltd. Address before: 224621 Jiangsu province Yancheng City Xiangshui canal town of armed forces (Zhicheng) Patentee before: Tang Haitao |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20150314 |
|
| EXPY | Termination of patent right or utility model |