CN200975378Y - Servo straight-line actuator - Google Patents
Servo straight-line actuator Download PDFInfo
- Publication number
- CN200975378Y CN200975378Y CN 200620010311 CN200620010311U CN200975378Y CN 200975378 Y CN200975378 Y CN 200975378Y CN 200620010311 CN200620010311 CN 200620010311 CN 200620010311 U CN200620010311 U CN 200620010311U CN 200975378 Y CN200975378 Y CN 200975378Y
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- CN
- China
- Prior art keywords
- piston
- cylinder sleeve
- cylinder
- linear actuator
- servo
- 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 - Lifetime
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Abstract
A servo straight line actuator has the advantages of low damping, high response, long service life and large clearance design. The utility model is composed of a front cylinder cover, a rear cylinder cover, a cylinder sleeve arranged between the front and rear cylinder covers and a piston that is matched with the cylinder sleeve in a sliding way. The utility model is characterized in that: a nonmetal wearing ring is arranged between the piston and the cylinder sleeve. The utility model is mainly applied in the dynamic testing machine for the electric hydraulic servo.
Description
Technical field
The utility model relates to the electro-hydraulic servo dynamic testing machine, relates in particular to the servo linear actuator of electro-hydraulic servo dynamic testing machine.
Background technique
Servo linear actuator is the executive component of electro-hydraulic servo dynamic testing machine.The shortcoming that common actuator exists is, the gap is very little between oil cylinder and the piston, usually has only 0.03-0.05mm, and adopt metallic sheath guiding and support, sintering phenomenon can appear after the long-time continuously test, thereby influence the life-span of actuator greatly, and if add man-hour because machining error causes piston and cylinder sleeve, piston rod and cylinder cap centre hole axis to decentraction, do not install at all.
Summary of the invention
The utility model has proposed a kind of servo linear actuator with low resistance, high response, long-life, big gap design characteristics at deficiency of the prior art.
This programme is realized by following technical measures: it comprises front end housing, back cylinder cover and the cylinder sleeve between front end housing and back cylinder cover, also has the piston of joining with the cylinder sleeve cunning, it is characterized in that adopting between piston and the cylinder sleeve nonmetal wear ring.
The beneficial effect of this programme can be learnt according to the narration to such scheme, because to the support of the servo linear actuator piston rod design that breaks traditions, adopt nonmetal support promptly to adopt nonmetal wear ring, just can dwindle the diameter of piston, gap between piston and the cylinder sleeve can be extended to 0.2～0.4mm, sintering phenomenon may appear after the long-time continuously test that can effectively avoid very little owing to the gap and adopt metallic supports to bring, gap increase simultaneously can make oil arrive nonmetal wear ring lubricate, thereby it is simple to have fabrication and processing, be easy to assembling, the characteristics of sintering and selflubricating not at a high speed, thereby improve the life-span of servo linear actuator greatly, therefore the utility model has compared with prior art been realized technical purpose.
The concrete characteristics of this programme also have, be provided with the seal ring of joining in described piston central authorities with the cylinder sleeve cunning, the nonmetal wear ring that is arranged at piston face seal ring both sides is at least 2, and nonmetal wear ring distributes and the seal ring both sides, can make piston keep axially concentric with cylinder sleeve.Front end housing and back cylinder cover are provided with the nonmetal wear ring of joining with the piston rod cunning and seal ring and carry the oilhole of lubricant oil to piston rod, make cunning between the sealing of piston rod and cylinder cap and maintenance piston rod and the cylinder cap join and lubricate.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is servo linear actuator structural representation;
Among the figure, 1, displacement transducer, 2, piston rod, 3, front end housing, 4, nonmetal wear ring, 5, cylinder sleeve, 6, back cylinder cover, 7, piston, 8, seal ring.
Embodiment
As shown in Figure 1, servo linear actuator comprises front end housing 3, back cylinder cover 6 and the cylinder sleeve 5 between front end housing 3 and back cylinder cover 6, also has and cylinder sleeve 5 sliding pistons 7 of joining, and adopts nonmetal wear ring 4 between piston 7 and the cylinder sleeve 5.The described nonmetal wear ring 4 that is arranged at piston 7 surfaces is at least 2, is provided with and cylinder sleeve 5 sliding seal rings 8 of joining in piston 7 central authorities.Front end housing 3 and back cylinder cover 6 are provided with and piston rod 2 sliding nonmetal wear ring and seal rings of joining.Servo linear actuator is outside equipped with electrohydraulic control, inbuilt displacement sensor 1.
Servo linear actuator amplitude threshold Position Design hydraulic cushion district avoids moving generation damage out of control.Servo linear actuator frequency response is not less than 250Hz.Servo linear actuator is in running, and piston rod surface can form one deck oil film, and this helps improving the working life of servo actuator.If servo actuator is little amplitude fatigue test when often growing, the suggestion user often adjusts the zero-bit of the width of cloth of fatigue test, avoids occurring seal ring the fixed position of piston rod is rubbed for a long time.Carry out unnecessary damage for fear of the working life that shortens actuator with to actuator, should avoid actuator is applied lateral load in the process of the test as far as possible.
Claims (3)
1, a kind of servo linear actuator, it comprises front end housing, back cylinder cover and the cylinder sleeve between front end housing and back cylinder cover, also has the piston of joining with the cylinder sleeve cunning, it is characterized in that adopting between piston and the cylinder sleeve nonmetal wear ring.
2, servo linear actuator according to claim 1 is characterized in that being provided with the seal ring of joining with the cylinder sleeve cunning in described piston central authorities, and the nonmetal wear ring that is arranged at piston face seal ring both sides is at least 2.
3, servo linear actuator according to claim 1 and 2 is characterized in that the oilhole that front end housing and back cylinder cover are provided with the nonmetal wear ring of joining with the piston rod cunning and seal ring and carry lubricant oil to piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620010311 CN200975378Y (en) | 2006-09-27 | 2006-09-27 | Servo straight-line actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620010311 CN200975378Y (en) | 2006-09-27 | 2006-09-27 | Servo straight-line actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200975378Y true CN200975378Y (en) | 2007-11-14 |
Family
ID=38901663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620010311 Expired - Lifetime CN200975378Y (en) | 2006-09-27 | 2006-09-27 | Servo straight-line actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200975378Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922481B (en) * | 2009-06-09 | 2012-11-28 | 天津市天二锻压机床有限公司 | Precise force through rod cylinder |
| CN103321883A (en) * | 2013-06-24 | 2013-09-25 | 北京化工大学 | Actuating cylinder of reciprocating compressor gas flow regulating system |
| CN104458228A (en) * | 2014-11-28 | 2015-03-25 | 济南瑞晟机械有限公司 | External limit actuator |
| CN104847710A (en) * | 2015-03-17 | 2015-08-19 | 北京理工大学 | Electro-hydraulic hybrid actuator based on oil-gas balance |
| CN105156409A (en) * | 2015-09-06 | 2015-12-16 | 哈尔滨工业大学 | Ring plug type electro-hydraulic actuator |
| CN106762962A (en) * | 2017-03-07 | 2017-05-31 | 长春机械科学研究院有限公司 | A kind of linear actuator |
-
2006
- 2006-09-27 CN CN 200620010311 patent/CN200975378Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922481B (en) * | 2009-06-09 | 2012-11-28 | 天津市天二锻压机床有限公司 | Precise force through rod cylinder |
| CN103321883A (en) * | 2013-06-24 | 2013-09-25 | 北京化工大学 | Actuating cylinder of reciprocating compressor gas flow regulating system |
| CN103321883B (en) * | 2013-06-24 | 2015-07-15 | 北京化工大学 | Actuating cylinder of reciprocating compressor gas flow regulating system |
| CN104458228A (en) * | 2014-11-28 | 2015-03-25 | 济南瑞晟机械有限公司 | External limit actuator |
| CN104458228B (en) * | 2014-11-28 | 2017-01-25 | 济南瑞晟机械有限公司 | External limit actuator |
| CN104847710A (en) * | 2015-03-17 | 2015-08-19 | 北京理工大学 | Electro-hydraulic hybrid actuator based on oil-gas balance |
| CN105156409A (en) * | 2015-09-06 | 2015-12-16 | 哈尔滨工业大学 | Ring plug type electro-hydraulic actuator |
| CN105156409B (en) * | 2015-09-06 | 2016-12-28 | 哈尔滨工业大学 | A kind of electro-hydraulic actuator of ring taps formula |
| CN106762962A (en) * | 2017-03-07 | 2017-05-31 | 长春机械科学研究院有限公司 | A kind of linear actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081128 Address after: Shanghai City, Songjiang District Spring Road No. 18, zip code: 201612 Patentee after: MTS Industry System (China) Co., Ltd. Address before: No. 1992, Qinghe North Road, Tianqiao District, Shandong, Ji'nan: 250032 Patentee before: Jinan SANS Testing Machine Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: METERS INDUSTRY SYSTEMS ( CHINA) CO., LTD. Free format text: FORMER OWNER: JINAN XINSANSI DYNAMIC EXPERIMENT TECHNOLOGY CO., LTD. Effective date: 20081128 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071114 |
|
| EXPY | Termination of patent right or utility model |