CN202381440U - Novel hydraulic servo oil cylinder - Google Patents
Novel hydraulic servo oil cylinder Download PDFInfo
- Publication number
- CN202381440U CN202381440U CN2011205587964U CN201120558796U CN202381440U CN 202381440 U CN202381440 U CN 202381440U CN 2011205587964 U CN2011205587964 U CN 2011205587964U CN 201120558796 U CN201120558796 U CN 201120558796U CN 202381440 U CN202381440 U CN 202381440U
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- China
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- cylinder
- cylinder cover
- hydraulic servo
- piston body
- novel hydraulic
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Abstract
The utility model relates to a novel hydraulic servo oil cylinder. The novel hydraulic servo oil cylinder comprises a piston body, a front cylinder cover and a back cylinder cover, wherein conical annular cavities are formed inside the piston body, the front cylinder cover and the back cylinder cover; respective central parts of the piston body, the front cylinder cover and the back cylinder cover are connected with pressure oil inlets; and a plurality of independent gaps are uniformly formed on the peripheral edge of the piston body. The novel hydraulic servo oil cylinder has the advantages as follows: the servo oil cylinder is produced by a new sealing and hydraulically-suspending automatically-centering technology, and a piston and the piston rod can be automatically centered, so that a centering suspending force is generated, the piston rod is in a floating state and the frictional force between the piston rod and a cylinder barrel is reduced, and further the frequency response of the servo cylinder is improved; and by arranging the plurality of independent gaps, the plurality of independent gaps can generate a certain hydraulically-suspending and centering effect, and the frictional force in the cylinder can be reduced relatively, so that the novel hydraulic servo oil cylinder has very high frequency response and very good low-pressure startup characteristic.
Description
Technical field
The utility model relates to the hydraulics field, relates in particular to a kind of novel hydraulic servo-cylinder.
Background technique
General servo-cylinder all is to set about consideration aspect sealing configuration and the machining accuracy, thereby improves its frequency response.But at first to consider to live the success of in-oil cylinder fluid is close because of sealing configuration, it is leaked in not producing and leak, thereby certainly will on piston and piston rod, produce some Sealing decrements, and then produce friction, greatly restrict the further raising of its frequency response.In addition, the deadweight meeting of piston rod and piston further strengthens its motion friction, also restricts the raising of its frequency response.
Summary of the invention
To above defective, the utility model provides a kind of and makes in-oil cylinder friction reduce, have good frequency response relatively, can improve the novel hydraulic servo-cylinder of low pressure starting characteristic, to solve many deficiencies of existing technology.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
A kind of novel hydraulic servo-cylinder; Comprise piston body, front end housing and back cylinder cover; Said piston body, front end housing and back cylinder cover inside are equipped with the taper ring cavity; Said piston body, front end housing and back cylinder cover center portion separately connects the pressure oil import respectively, and said piston body surrounding is along evenly offering some independently slits.
The beneficial effect of the described novel hydraulic servo-cylinder of the utility model is: the technology through new sealing and hydraulic pressure suspension automatic centering are set is produced servo-cylinder; Promptly through introducing pressure oil respectively in centre, protecgulum and bonnet; Flow to small gaps by big slit simultaneously, can produce heart effect automatically piston and piston rod, thereby produce suspending power the heart; Make piston rod be in quick condition and reduced friction, thereby improved the frequency response of servocylinder with cylinder barrel; Through some discrete gap are set, because it can produce certain hydraulic pressure suspension effect and centering effect, in-oil cylinder friction can reduce relatively, thereby has extraordinary frequency response and low pressure starting characteristic.
Description of drawings
According to accompanying drawing the utility model is done further explain below.
Fig. 1 is the structural representation of the said novel hydraulic servo-cylinder of the utility model embodiment;
Fig. 2 is the piston suspending part schematic representation of the said novel hydraulic servo-cylinder of the utility model embodiment.
Among the figure:
1, pressure oil import; 2, hydraulic pressure suspension oil return apparatus; 3, piston body; 4, front end housing; 5, back cylinder cover; 6, taper ring cavity; 7, slit.
Embodiment
Shown in Fig. 1-2; The described novel hydraulic servo-cylinder of the utility model embodiment comprises piston body 1, front end housing 4 and back cylinder cover 5, and said piston body 3 two ends are respectively equipped with front end housing 4 and back cylinder cover 5; Said piston body 1, front end housing 4 and back cylinder cover 5 inside are equipped with taper ring cavity 6; Said piston body 3, front end housing 4 and back cylinder cover 5 center portion separately connect pressure oil import 1 respectively and introduce pressure oil, flow to both sides through separately taper ring cavity 6, through by big slit flowing to small gaps again; Can produce automatically heart effect piston and piston rod; Thereby produce suspending power, make piston rod be in quick condition and reduced friction, thereby improved the frequency response of servocylinder with cylinder barrel to the heart; Said piston body 3, front end housing 4 and back cylinder cover 5 inner throttle orifices are connected with hydraulic pressure suspension oil return apparatus 2 through oil circuit respectively; Said piston body 1 surrounding is along evenly offering 8-36 independently slits 7, and independent suspension oil return behind each fixed orifice fuel feeding prevents eccentric back some places decompression; This kind structure not only has the automatic centering effect; And the aperture suspension effect of automatic compensation is arranged, two kinds of factors stacks make piston rod be suspended in the center better; Greatly reduced the sound friction, made the SFG servo-cylinder obtain higher frequency response and low pressure starting characteristic.
Claims (1)
1. novel hydraulic servo-cylinder; Comprise piston body, front end housing and back cylinder cover; Said piston body, front end housing and back cylinder cover inside are equipped with the taper ring cavity; It is characterized in that: said piston body, front end housing and back cylinder cover center portion separately connects the pressure oil import respectively, and the piston body surrounding is along evenly offering some independently slits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205587964U CN202381440U (en) | 2011-04-06 | 2011-12-28 | Novel hydraulic servo oil cylinder |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120097838.9 | 2011-04-06 | ||
| CN201120097838 | 2011-04-06 | ||
| CN2011205587964U CN202381440U (en) | 2011-04-06 | 2011-12-28 | Novel hydraulic servo oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381440U true CN202381440U (en) | 2012-08-15 |
Family
ID=46629945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205587964U Expired - Fee Related CN202381440U (en) | 2011-04-06 | 2011-12-28 | Novel hydraulic servo oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145509A (en) * | 2019-05-28 | 2019-08-20 | 哈尔滨工程大学 | A kind of connection structure between hydraulic cylinder piston rod and load |
-
2011
- 2011-12-28 CN CN2011205587964U patent/CN202381440U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145509A (en) * | 2019-05-28 | 2019-08-20 | 哈尔滨工程大学 | A kind of connection structure between hydraulic cylinder piston rod and load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 201508 Shanghai city Jinshan District Shanyang Zhen Shan Feng Road No. 58 Patentee after: SHANGHAI CHAOTIAN INDUSTRY CO., LTD. Address before: 201508 Jinshan District Feng Shan Road, Shanghai, No. 88 Patentee before: Shanghai Chaotian Industrial Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20191228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |