CN207830270U - Hydrostatic support type servo hydraulic cylinder - Google Patents
Hydrostatic support type servo hydraulic cylinder Download PDFInfo
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- CN207830270U CN207830270U CN201820028824.3U CN201820028824U CN207830270U CN 207830270 U CN207830270 U CN 207830270U CN 201820028824 U CN201820028824 U CN 201820028824U CN 207830270 U CN207830270 U CN 207830270U
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- end caps
- static pressure
- homonymy
- symmetrical
- pressure oil
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Abstract
The utility model discloses a kind of hydrostatic support type servo hydraulic cylinders, contain symmetrical two end caps（1）, cylinder barrel（2）, piston rod（3）, two end caps are all connected with cylinder barrel and with the O-rings of homonymy（6）Sealing uses clearance seal, two end caps to use sealing ring and wiper seal all between piston rod between piston rod and cylinder barrel；The hydrostatic support chamber there are four same volume is all set on two end caps（15）, homonymy hydrostatic support chamber is distributed in symmetrical, and is all connected with the in-line of homonymy, and four static pressure oil-recovery tanks are respectively equipped in two end caps（9）And four static pressure oil supply pipes（10）, orifice plug is all equipped in each static pressure oil supply pipe（4）, each static pressure oil supply pipe be equipped with plug I（5）And plug II（11）, four static pressure oil-recovery tanks are all connected with the oil return line of homonymy.The utility model anti-side unbalance loading ability is strong, can meet the requirement of dynamic test and unbalance loading operating mode to servo hydraulic cylinder.
Description
Technical field
The utility model is related to a kind of hydrostatic support type servo hydraulic cylinders, belong to servo-hydraulic field.
Background technology
Servo hydraulic cylinder High power output has the control of high-precision position, power control accuracy, is widely used in all types of industries
Field, especially space product slow test, fatigue test, all kinds of testing machines, all types of industries executing agency etc..Servo hydraulic cylinder
It is the critical piece of Hydrauservo System, non-standard de-sign is carried out for actual use operating mode.The structure of servo hydraulic cylinder and
Its dynamic property directly influences the performance and used life of system, so the design of servo hydraulic cylinder is the important of system design
Part.
Compared to common drive hydraulic cylinder（Or engineering hydraulic cylinder）, servo hydraulic cylinder can drive workload in high frequency, real
Now high-precision, the SERVO CONTROL of high response, intensity, rigidity will meet the requirement under high-frequency percussion, and guiding is extremely excellent,
Meet heavy duty under high frequency, the requirement of unbalance loading.The frictional force of its piston rod wants minimum, and the service life is very high.
It is domestic at present generally copper alloy type guide sleeve or support ring to be used to support piston rod, compare transmitting hydraulic
Cylinder, frictional force optimize significantly with index of aging, but do not meet the requirement of dynamic test and unbalance loading operating mode.
Invention content
The purpose of this utility model is intended to provide a kind of new servo hydraulic cylinder --- hydrostatic support type servo hydraulic cylinder, it should
The frictional resistance of hydraulic cylinder piston rod is small, and service life is long, and anti-side unbalance loading ability is strong, can meet dynamic test and unbalance loading operating mode pair
The requirement of servo hydraulic cylinder.
To realize that the above-mentioned purpose of the utility model, used technical solution be：A kind of hydrostatic support type servo-hydraulic
Cylinder it is characterized in that：Containing symmetrical two end caps, cylinder barrel, piston rods, symmetrical two end caps all with cylinder
Cylinder is connected, and symmetrical two end caps are all with cylinder barrel by the seal with O ring of homonymy, the cooperation between piston rod and cylinder barrel
Using clearance seal, symmetrical two end caps are carried out all between piston rod using the sealing ring of homonymy and dustband close
Envelope；The hydrostatic support chamber of four same volumes, four same volumes of homonymy are respectively equipped on symmetrical two end caps
Hydrostatic support chamber, in symmetrical distribution, four hydrostatic support chambers are all connected with the in-line of homonymy, symmetrical two
It is respectively equipped with four static pressure oil-recovery tanks and four static pressure oil supply pipes in a end cap, throttling is all equipped in each static pressure oil supply pipe
Plug, each static pressure oil supply pipe are equipped with plug I and plug II, four static pressure oil-recovery tanks in symmetrical two end caps all with
The oil return line of homonymy is connected.
The utility model can realize one kind between piston rod and end cap due to taking four chamber symmetric hydrostatic pressure supporting forms
Static pressure oil film supports, and the two is made to be kept completely separate, and is different from common hydrostatic bearing, the bearing under this operating mode is without circumferential rotation
Turn, and carry out axial high speed straight reciprocating motion, dynamic high-pressure, the other side are born in the axial side of symmetrical two end caps
The seal form of low pressure low friction No leakage is taken, meanwhile, when the utility model also allows for hydrostatic support failure, piston rod energy
Enough continue to work normally.When hydrostatic support chamber is by downward load, the static pressure cavity gap of lower part becomes smaller, pressure rise, on
The static pressure cavity gap in portion becomes larger, pressure reduction.The pressure difference of the oil pocket of hydrostatic support chamber top and the bottom promotes piston rod to move upwards, with
External load balances.
Since orifice plug is mounted in static pressure oil supply pipe, can be used for providing hydraulic oil.Piston rod and symmetrical two
A end cap mating surface forms minimum gap, can establish static pressure oil film.When the liquid to in-line offer pressure stability, proper temperature
When pressure oil, by each orifice plug, into the hydrostatic support intracavitary on corresponding end cap, since each hydrostatic support chamber is symmetrical etc.
The throttle resistance of area distributions, each orifice plug is identical, and piston rod will float in the center of end cap, and each at this time quiet
The sealing oil edge gap of hydraulic support chamber is identical, and piston rod is made to be completely disengaged with end cap.Since the cooperation between piston rod and cylinder barrel is adopted
With clearance seal, in this way, when piston rod floats completely, gap circumferencial direction is impartial between piston rod and cylinder barrel, and the two is complete
It is detached from, forms clearance seal, effectively reduce frictional force.
The utility model has the following advantages that and good effect：
（1）The starting power of hydraulic cylinder is small.Due to realizing pure liquid lubrication, the frictional resistance that piston rod is contacted with end cap
Small, transmission efficiency improves the dynamic response of system.
（2）Service life is long.Since piston rod is separated with end cap contact surface by one layer of oil film, them is made not contact,
Contact surface will not be worn, and service life is very long.
（3）Anti-side unbalance loading ability is strong.There is high oil film rigidity since symmetrical static-pressure oil chamber forms oil film, make
Piston rod has good supporting when receiving unbalance loading.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is A-A sectional views.
Specific implementation mode
Further detailed description done to the utility model in the following with reference to the drawings and specific embodiments, however the implementation
Example should not be construed in a limiting sense.
The utility model contains symmetrical two end caps 1, cylinder barrel 2, piston rod 3 it can be seen from Fig. 1-Fig. 3, left
Right symmetrical two end caps 1 are all connected with cylinder barrel 2 by screw 14, and symmetrical two end caps 1 are all with cylinder barrel 2 by same
The O-ring 6 of side seals, and the cooperation between piston rod 3 and cylinder barrel 2 uses clearance seal, symmetrical two end caps 1 all with work
It is sealed using the sealing ring 7 of homonymy and dustband 8 between stopper rod 3；It is respectively equipped with four on symmetrical two end caps 1
The hydrostatic support chamber 15 of the hydrostatic support chamber 15 of a same volume, four same volumes of homonymy is distributed in symmetrical, and four quiet
Hydraulic support chamber 15 is all connected with the in-line of homonymy 12, and four static pressure are respectively equipped in symmetrical two end caps 1 and are returned
Oil groove 9 and four static pressure oil supply pipes 10 are all equipped with orifice plug 4, each static pressure oil supply pipe in each static pressure oil supply pipe 10
10 are equipped with plug I 5 and plug II 11, four static pressure oil-recovery tanks 9 in symmetrical two end caps 1 all with the oil return line of homonymy
13 are connected.
Cooperation between piston rod 3 and cylinder barrel 2 uses clearance seal, when piston rod 3 floats completely, piston rod 3 and cylinder
Gap circumferencial direction is impartial between cylinder 2, and the two completely disengages, and forms clearance seal.Taper thread can be used with end cap 1 in orifice plug 4
Connection, sealing are reliably sealed using fluid sealant.
Claims (1)
1. a kind of hydrostatic support type servo hydraulic cylinder, it is characterized in that：Contain symmetrical two end caps（1）, cylinder barrel（2）, it is living
Stopper rod（3）, symmetrical two end caps（1）All with cylinder barrel（2）It is connected, symmetrical two end caps（1）All with cylinder barrel
（2）Pass through the O-ring of homonymy（6）Sealing, piston rod（3）With cylinder barrel（2）Between cooperation use clearance seal, it is symmetrical
Two end caps（1）All with piston rod（3）Between use homonymy sealing ring（7）And dustband（8）It is sealed；Symmetrical
Two end caps（1）On be respectively equipped with the hydrostatic support chambers of four same volumes（15）, the static pressure of four same volumes of homonymy
Supporting cavity（15）It is distributed in symmetrical expression, four hydrostatic support chambers（15）All with the in-line of homonymy（12）It is connected, in left and right pair
Two end caps claimed（1）Inside it is respectively equipped with four static pressure oil-recovery tanks（9）And four static pressure oil supply pipes（10）, each static pressure fuel feeding
Pipeline（10）Inside all it is equipped with orifice plug（4）, each static pressure oil supply pipe（10）Equipped with plug I（5）And plug II（11）, left and right pair
Two end caps claimed（1）Four interior static pressure oil-recovery tanks（9）All with the oil return line of homonymy（13）It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820028824.3U CN207830270U (en) | 2018-01-09 | 2018-01-09 | Hydrostatic support type servo hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820028824.3U CN207830270U (en) | 2018-01-09 | 2018-01-09 | Hydrostatic support type servo hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207830270U true CN207830270U (en) | 2018-09-07 |
Family
ID=63392252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820028824.3U Active CN207830270U (en) | 2018-01-09 | 2018-01-09 | Hydrostatic support type servo hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207830270U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735596A (en) * | 2020-08-10 | 2020-10-02 | 苏州东菱振动试验仪器有限公司 | Hydraulic vibration table |
| CN111980986A (en) * | 2020-08-19 | 2020-11-24 | 江苏恒立液压股份有限公司 | Single-rod high-frequency impact test hydraulic cylinder |
| CN112692071A (en) * | 2020-12-11 | 2021-04-23 | 陕西龙门钢铁有限责任公司 | Lifting device for replacing working roll of strip steel four-high mill |
| CN114483703A (en) * | 2022-02-28 | 2022-05-13 | 东北大学 | Rock mechanics high-amplitude-frequency response characteristic hydraulic actuator |
-
2018
- 2018-01-09 CN CN201820028824.3U patent/CN207830270U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735596A (en) * | 2020-08-10 | 2020-10-02 | 苏州东菱振动试验仪器有限公司 | Hydraulic vibration table |
| CN111980986A (en) * | 2020-08-19 | 2020-11-24 | 江苏恒立液压股份有限公司 | Single-rod high-frequency impact test hydraulic cylinder |
| CN112692071A (en) * | 2020-12-11 | 2021-04-23 | 陕西龙门钢铁有限责任公司 | Lifting device for replacing working roll of strip steel four-high mill |
| CN112692071B (en) * | 2020-12-11 | 2023-10-24 | 陕西龙门钢铁有限责任公司 | Lifting device for replacing working rolls of strip steel four-high mill |
| CN114483703A (en) * | 2022-02-28 | 2022-05-13 | 东北大学 | Rock mechanics high-amplitude-frequency response characteristic hydraulic actuator |
| CN114483703B (en) * | 2022-02-28 | 2022-11-25 | 东北大学 | Rock mechanics high-amplitude-frequency response characteristic hydraulic actuator |
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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: 20220424 Address after: 265500 Fenghuangshan Road, Fushan District, Yantai City, Shandong Province Patentee after: Yantai aeronautical Hydraulic Control Co.,Ltd. Address before: 265500 Yantai aviation hydraulic control Co., Ltd., No. 181, Fenghuangshan Road, Fushan District, Yantai City, Shandong Province Patentee before: Wu Guangyu |