CN201407225Y - High-frequency servo oil cylinder - Google Patents
High-frequency servo oil cylinder Download PDFInfo
- Publication number
- CN201407225Y CN201407225Y CN2009200136684U CN200920013668U CN201407225Y CN 201407225 Y CN201407225 Y CN 201407225Y CN 2009200136684 U CN2009200136684 U CN 2009200136684U CN 200920013668 U CN200920013668 U CN 200920013668U CN 201407225 Y CN201407225 Y CN 201407225Y
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- China
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- hydrostatic bearing
- piston rod
- oil cylinder
- rear end
- built
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Abstract
The utility model relates to a high-frequency servo oil cylinder, which comprises a piston rod, a front end cover, a front-end hydrostatic bearing, a back end cover, a back-end hydrostatic bearing anda built-in micropulse displacement sensor, wherein the front-end hydrostatic bearing is positioned in the front end cover; the back-end hydrostatic bearing is positioned in the back end cover; the piston rod penetrates through the front-end hydrostatic bearing and the back-end hydrostatic bearing; and the built-in micropulse displacement sensor is positioned at the back end of the piston rod. Thehydrostatic bearings are adopted for guide lubrication, the friction between the piston rod and the cylinder body is reduced, and thereby, the service life of the oil cylinder is prolonged; and the built-in micropulse displacement sensor can provide sampling frequency and output accuracy.
Description
Technical field:
The utility model relates to a kind of oil cylinder, and especially a kind of high frequency servo oil cylinder is mainly used on the fatigue testing machine.
Background technique:
Fatigue machine is operating frequency 30HZ to the requirement of operating cylinder generally, forms 300mm, maximum thrust 5T, and working pressure 16Mpa, the stroke that can choose random lengths in the stroke range of 0～300mm carries out the to-and-fro motion of high-speed high frequency rate.Existing cylinder action frequency is low, and speed is slow, and under such high-speed motion, working life is very short.
Summary of the invention:
At above-mentioned the deficiencies in the prior art, the utility model provides a kind of high frequency servo oil cylinder.
For achieving the above object, the technical solution adopted in the utility model is: a kind of high frequency servo oil cylinder comprises piston rod, front cover, front end hydrostatic bearing, rear end cover, rear end hydrostatic bearing and built-in micropulse displacement transducer.The front end hydrostatic bearing is in the front cover.The rear end hydrostatic bearing is in the rear end cover.Piston rod passes front end hydrostatic bearing and rear end hydrostatic bearing.Built-in micropulse displacement transducer is in the rear end of piston rod.
It is lubricated that the utility model adopts hydrostatic bearing to lead, and reduced the friction of piston rod with cylinder body, thereby prolonged the working life of oil cylinder; The built-in micropulse displacement transducer that adopts can provide sample frequency and output accuracy.
Description of drawings:
Fig. 1 is the structural representation of model utility.
Fig. 2 is the cross-sectional view of front end hydrostatic bearing.
Fig. 3 is the longitudinal section figure of front end hydrostatic bearing.
Embodiment:
As shown in Figure 1, a kind of high frequency servo oil cylinder comprises piston rod 1, front cover 3, front end hydrostatic bearing 2, rear end cover 4, rear end hydrostatic bearing 6 and built-in micropulse displacement transducer 5.Front end hydrostatic bearing 2 is in the front cover 3.Rear end hydrostatic bearing 5 is in the rear end cover 4.Piston rod 1 passes front end hydrostatic bearing 2 and rear end hydrostatic bearing 6.Built-in micropulse displacement transducer 5 is in the rear end of piston rod 1.
As Fig. 2-shown in Figure 3: the front end hydrostatic bearing is by A, B, four mouth oil-feeds of C, D, and two mouth oil returns of E, F come the front end hydrostatic bearing is cooled off.The structure of rear end hydrostatic bearing is identical with the front end hydrostatic bearing.
The utility model adopts the built-in micropulse displacement transducer of German BALLUFF.This sensor output signal 4-20mA, power supply voltage 24V, DC sample frequency 2kHz ,≤5 μ m that lag behind, the minimum 2 μ m of repetitive positioning accuracy, the zero point of this sensor and terminal point can 100% adjustings in range ability.
Cylinder seal adopts the low drag seal of German Merkel company, has guaranteed the breakout pressure≤0.15MPa of oil cylinder, has satisfied oil cylinder rapidity requirement and frequency characteristic.
The piston area of determining this oil hydraulic cylinder according to the rated working pressure of maximum load power and system is 80mm, and the diameter of determining the piston rod of this oil hydraulic cylinder according to the requirement of cylinder diameter and speed ratio is 56mm.
This oil hydraulic cylinder adopts two rod structures, adopts hydrostatic bearing that piston rod is supported and leads for alleviating frictional force oil cylinder rear and front end.The piston place adopts bronze antifriction material.Avoided steel to contact with the direct friction of steel.
Claims (1)
1, a kind of high frequency servo oil cylinder, it is characterized in that: comprise piston rod, front cover, the front end hydrostatic bearing, rear end cover, rear end hydrostatic bearing and built-in micropulse displacement transducer, the front end hydrostatic bearing is in the front cover, the rear end hydrostatic bearing is in the rear end cover, and piston rod passes front end hydrostatic bearing and rear end hydrostatic bearing, and built-in micropulse displacement transducer is in the rear end of piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200136684U CN201407225Y (en) | 2009-05-13 | 2009-05-13 | High-frequency servo oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200136684U CN201407225Y (en) | 2009-05-13 | 2009-05-13 | High-frequency servo oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201407225Y true CN201407225Y (en) | 2010-02-17 |
Family
ID=41678159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200136684U Expired - Lifetime CN201407225Y (en) | 2009-05-13 | 2009-05-13 | High-frequency servo oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201407225Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317778A (en) * | 2015-11-05 | 2016-02-10 | 杭州邦威机电控制工程有限公司 | Center-hole type servo actuator for structure test |
| 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 |
| CN109654084A (en) * | 2018-11-27 | 2019-04-19 | 中国石油化工股份有限公司 | A kind of explosion-proof type servo hydraulic cylinder |
| CN110273887A (en) * | 2019-07-03 | 2019-09-24 | 江苏恒立液压股份有限公司 | Servo actuator |
-
2009
- 2009-05-13 CN CN2009200136684U patent/CN201407225Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317778A (en) * | 2015-11-05 | 2016-02-10 | 杭州邦威机电控制工程有限公司 | Center-hole type servo actuator for structure test |
| 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 |
| CN109654084A (en) * | 2018-11-27 | 2019-04-19 | 中国石油化工股份有限公司 | A kind of explosion-proof type servo hydraulic cylinder |
| CN110273887A (en) * | 2019-07-03 | 2019-09-24 | 江苏恒立液压股份有限公司 | Servo actuator |
| CN110273887B (en) * | 2019-07-03 | 2021-06-01 | 江苏恒立液压股份有限公司 | Servo actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100217 |