CN108895056A - A kind of static pressure chamber bearing guiding device hydraulic cylinder - Google Patents
A kind of static pressure chamber bearing guiding device hydraulic cylinder Download PDFInfo
- Publication number
- CN108895056A CN108895056A CN201810849534.XA CN201810849534A CN108895056A CN 108895056 A CN108895056 A CN 108895056A CN 201810849534 A CN201810849534 A CN 201810849534A CN 108895056 A CN108895056 A CN 108895056A
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- China
- Prior art keywords
- hydrostatic support
- cylinder
- static pressure
- leakage
- machined
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1433—End caps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The present invention relates to a kind of hydraulic cylinders with static pressure chamber bearing guiding device, including cylinder bottom, cylinder barrel, piston, piston rod, sealing ring and cylinder cap；There are two I-shaped hydrostatic support chambers for the processing of cylinder cap internal circular surfaces, it is machined with oil inlet passage respectively in the middle part of two I-shaped hydrostatic support chambers, oil inlet passage, which leads in I-shaped hydrostatic support chamber, is machined with damping hole, it machined two annular leakage grooves on the outside of hydrostatic support chamber, a channel is processed in leakage grooves, it is communicated through cylinder barrel with leakage hole, cylinder barrel is machined with oil inlet and outlet, it is provided with hydrostatic support hydraulic fluid port on hydrostatic support and enters hydrostatic support chamber through hydrostatic support hydraulic fluid port, oil inlet passage and damping hole for adjusting the balance of hydrostatic support, control oil.Have the characteristics that structure simple, low friction, high frequency sound, the long-life, high reliablity, without external leakage.
Description
Technical field
The invention belongs to hydraulic cylinder technical fields, are related to a kind of static pressure chamber bearing guiding device hydraulic cylinder.
Background technique
Currently, interval oil leak of the hydraulic oil between piston rod and guide sleeve, generally all exists in order to prevent in hydraulic cylinder
Sealing ring is loaded on guide sleeve or cylinder cap, although this can prevent external leakage, increases frictional resistance, when hydraulic cylinder is in high frequency sound
When work, piston rod and sealing ring contact position generate friction, and fever damages sealing ring and piston rod surface, external leakage occurs, sternly
It cannot work, reduce the service life when weight.So using hydrostatic bearing technology in the section hydraulic cylinder of high frequency sound, sealing is not had to
Part sealing, but this hydrostatic support is generally used four hydrostatic support oil pockets, is also configured in this way using four damping holes, processing
Workload doubles, and the probability for damping hole plug also increases, and when there is a damping hole to be blocked, hydrostatic support power is just uneven
Weighing apparatus, deviates piston rod, surface is easily damaged.After some hydraulic cylinders use hydrostatic support oil pocket, also reservation sealing ring is prevented outer
Leakage, but still there are fretting wears, influence working performance.
Summary of the invention
For one, in order to overcome the disadvantages mentioned above of the prior art, the present invention provides a kind of static pressure chamber bearing guiding device hydraulic cylinder,
It has there are two hydrostatic support chamber and two damping holes and two leakage grooves, simple, low friction, high frequency sound, length with structure
Service life, high reliablity, without external leakage the characteristics of.
The technical solution adopted by the present invention to solve the technical problems is：A kind of liquid with static pressure chamber bearing guiding device
Cylinder pressure, including cylinder bottom, cylinder barrel, piston, piston rod, sealing ring and cylinder cap；There are two I-shaped static pressure for the processing of cylinder cap internal circular surfaces
Supporting cavity, two I-shaped hydrostatic support chambers middle parts are machined with oil inlet passage respectively, and oil inlet passage leads to I-shaped hydrostatic support
It is machined with damping hole in chamber, machined two annular leakage grooves on the outside of hydrostatic support chamber, process a channel, warp in leakage grooves
Cylinder barrel is communicated with leakage hole, and cylinder barrel is machined with oil inlet and outlet, and hydrostatic support hydraulic fluid port is provided on hydrostatic support for adjusting static pressure
The balance of bearing, control oil enter hydrostatic support chamber through hydrostatic support hydraulic fluid port, oil inlet passage and damping hole, since damping hole is made
With generation static pressure oil film supporting piston bar prevents piston rod and cylinder cap from generating dry friction, plays lubricating action.
The circumferential angle of the I-shaped hydrostatic support chamber is 150 °, and maximum width is 0.8~1 times of piston diameter, minimum
Width is 0.4~0.5 times of piston diameter, and the angle of circumference of minimum widith is 50 °, and hydrostatic support chamber depth is 1~2mm.
It is machined with damping hole in the middle part of the I-shaped hydrostatic support chamber, damping bore dia is 1~2mm, length is 2~
5mm, damping hole one end are communicated with hydrostatic support chamber, and the other end is communicated with oil inlet passage, oil inlet passage be damping bore dia 1.5~
2 times, control oil enters from control port.
The hydraulic cylinder guide sleeve uses integrated, ladder-type structure with cylinder cap, and material is spheroidal graphite cast-iron.
The leakage grooves, each leakage 0.8~1mm of groove depth, 0.8~1.2mm of width, the back gauge of two annular leakage grooves are
2~4mm；Leakage Energy is flowed out by leakage hole, prevents Leakage Energy from leaking from piston rod.
Clearance seal is used between the cylinder cap and piston rod, unilateral fit clearance is 10~15 μm, remove sealing ring,
Improve dynamic property.
The positive effect of the present invention is：Using hydrostatic support technology and two annular leakage grooves, simplify hydraulic cylinder structure,
Frictional force is reduced, improves frequency response, high reliablity, long working life, no external leakage is easy to maintain, can be widely applied to height
Speed, high frequency sound large, medium and small type hydraulic system, as smelter steel mill mold oscillation, steel rolling mill's steel band correction, lathe,
Engineering machinery, military project hydraulic equipment etc..
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is the plane outspread drawing of Fig. 1.
In figure：1- cylinder bottom, 2- cylinder barrel, 3- piston, 4- piston rod, 5- hydrostatic support chamber, 6- sealing ring, 7- damping hole, 8-
Leakage grooves, 9- cylinder cap, 10- leakage hole, 11- hydrostatic support hydraulic fluid port, 12- oil inlet passage, 13- oil inlet and outlet.
Specific embodiment
Below with reference to embodiment, the present invention is further described.
A kind of hydraulic cylinder with static pressure chamber bearing guiding device, including cylinder bottom 1, cylinder barrel 2, piston 3, piston rod 4, sealing
Circle 6 and cylinder cap 9；There are two I-shaped hydrostatic support chamber 5, two I-shaped 5 middle parts of hydrostatic support chamber for the processing of 9 internal circular surfaces of cylinder cap
It is machined with oil inlet passage 12 respectively, oil inlet passage 12, which leads in I-shaped hydrostatic support chamber 5, is machined with damping hole 7, hydrostatic support
The outside of chamber 5 machined two annular leakage grooves 8, processes a channel in leakage grooves 8, communicates through cylinder barrel 2 with leakage hole 10, cylinder
Cylinder 2 is machined with oil inlet and outlet 13, and hydrostatic support hydraulic fluid port 11 is provided on hydrostatic support for adjusting the balance of hydrostatic support, control
Liquefaction enters hydrostatic support chamber 5 through hydrostatic support hydraulic fluid port 11, oil inlet passage 12 and damping hole 7, since damping hole 7 acts on, generates
Static pressure oil film supporting piston bar 4 prevents piston rod 4 and cylinder cap 9 from generating dry friction, plays lubricating action.
The circumferential angle of the I-shaped hydrostatic support chamber 5 is 150 °, and maximum width is 0.8~1 times of 3 diameter of piston, most
Small width is 0.4~0.5 times of 3 diameter of piston, and the angle of circumference of minimum widith is 50 °, and 5 depth of hydrostatic support chamber is 1~2mm.
The middle part of the I-shaped hydrostatic support chamber 5 is machined with damping hole 7, and 7 diameter of damping hole is 1~2mm, length 2
~5mm, 7 one end of damping hole are communicated with hydrostatic support chamber 5, and the other end is communicated with oil inlet passage 12, and oil inlet passage 12 is damping hole 7
1.5~2 times of diameter, control oil enters from control port 11.
The hydraulic cylinder guide sleeve uses integrated, ladder-type structure with cylinder cap 9, and material is spheroidal graphite cast-iron.
The leakage grooves 8, each 8 0.8~1mm of depth of leakage grooves, 0.8~1.2mm of width, the side of two annular leakage grooves 8
Away from for 2~4mm；Leakage Energy is flowed out by leakage hole 10, prevents Leakage Energy from leaking from piston rod 4.
Clearance seal is used between the cylinder cap 9 and piston rod 4, unilateral fit clearance is 10~15 μm, removes sealing
Circle 6 improves dynamic property.
Present invention employs hydrostatic support technologies and two annular leakage grooves 8, simplify hydraulic cylinder structure, reduce frictional force,
Frequency response is improved, high reliablity, long working life, no external leakage is easy to maintain, can be widely applied to high speed, high frequency sound
Large, medium and small type hydraulic system, such as smelter steel mill mold oscillation, steel rolling mill's steel band correction, lathe, engineering machinery, army
Work hydraulic equipment etc..
Claims (6)
1. a kind of hydraulic cylinder with static pressure chamber bearing guiding device, including cylinder bottom, cylinder barrel, piston, piston rod, sealing ring and cylinder
Lid；It is characterized in that：There are two I-shaped hydrostatic support chamber, two I-shaped hydrostatic support chambers middle parts for the processing of cylinder cap internal circular surfaces
It is machined with oil inlet passage respectively, oil inlet passage, which leads in I-shaped hydrostatic support chamber, is machined with damping hole, outside hydrostatic support chamber
Side machined two annular leakage grooves, processes a channel in leakage grooves, communicates through cylinder barrel with leakage hole, cylinder barrel is machined with disengaging
Hydraulic fluid port, hydrostatic support hydraulic fluid port is provided on hydrostatic support for adjusting the balance of hydrostatic support, control oil through hydrostatic support hydraulic fluid port,
Oil inlet passage and damping hole enter hydrostatic support chamber, since damping hole acts on, generate static pressure oil film supporting piston bar, prevent piston
Bar and cylinder cap generate dry friction, play lubricating action.
2. as described in claim 1 with the hydraulic cylinder of static pressure chamber bearing guiding device, it is characterised in that：The I-shaped static pressure
The circumferential angle of supporting cavity is 150 °, and maximum width is 0.8~1 times of piston diameter, and minimum widith is piston diameter 0.4~0.5
Times, the angle of circumference of minimum widith is 50 °, and hydrostatic support chamber depth is 1~2mm.
3. as described in claim 1 with the hydraulic cylinder of static pressure chamber bearing guiding device, it is characterised in that：The I-shaped static pressure
Damping hole is machined in the middle part of supporting cavity, damping bore dia is 1~2mm, and length is 2~5mm, damping hole one end and hydrostatic support
Chamber communicates, and the other end is communicated with oil inlet passage, oil inlet passage be damping 1.5~2 times of bore dia, control oil from control port into
Enter.
4. as described in claim 1 with the hydraulic cylinder of static pressure chamber bearing guiding device, it is characterised in that：The hydraulic cylinder guiding
Set uses integrated, ladder-type structure with cylinder cap, and material is spheroidal graphite cast-iron.
5. as described in claim 1 with the hydraulic cylinder of static pressure chamber bearing guiding device, it is characterised in that：The leakage grooves, often
A leakage 0.8~1mm of groove depth, 0.8~1.2mm of width, the back gauge of two annular leakage grooves is 2~4mm；Leakage Energy passes through leakage
Mouth outflow, prevents Leakage Energy from leaking from piston rod.
6. as described in claim 1 with the hydraulic cylinder of static pressure chamber bearing guiding device, it is characterised in that：The cylinder cap and piston
Clearance seal is used between bar, unilateral fit clearance is 10~15 μm, removes sealing ring, improves dynamic property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849534.XA CN108895056A (en) | 2018-07-28 | 2018-07-28 | A kind of static pressure chamber bearing guiding device hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849534.XA CN108895056A (en) | 2018-07-28 | 2018-07-28 | A kind of static pressure chamber bearing guiding device hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108895056A true CN108895056A (en) | 2018-11-27 |
Family
ID=64352126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810849534.XA Pending CN108895056A (en) | 2018-07-28 | 2018-07-28 | A kind of static pressure chamber bearing guiding device hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108895056A (en) |
Cited By (2)
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2900887Y (en) * | 2006-04-27 | 2007-05-16 | 中冶连铸技术工程股份有限公司 | Static pressure oil film guide hydraulic cylinder |
| CN103867526A (en) * | 2014-04-11 | 2014-06-18 | 武汉科技大学 | Low-friction hybrid support guide sleeve hydraulic cylinder |
| CN104500498A (en) * | 2014-12-31 | 2015-04-08 | 太原科技大学 | Pressure-variable oil-supply-type load-deflection-resistant horizontal servo oil cylinder design method |
| CN207377900U (en) * | 2017-10-25 | 2018-05-18 | 烟台比吉流体控制技术有限公司 | A kind of single-acting hydrostatic support actuator |
| CN108194453A (en) * | 2018-03-22 | 2018-06-22 | 哈尔滨理工大学 | A kind of hydrostatic support sealing fluid cylinder pressure of anti-bias load |
-
2018
- 2018-07-28 CN CN201810849534.XA patent/CN108895056A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2900887Y (en) * | 2006-04-27 | 2007-05-16 | 中冶连铸技术工程股份有限公司 | Static pressure oil film guide hydraulic cylinder |
| CN103867526A (en) * | 2014-04-11 | 2014-06-18 | 武汉科技大学 | Low-friction hybrid support guide sleeve hydraulic cylinder |
| CN104500498A (en) * | 2014-12-31 | 2015-04-08 | 太原科技大学 | Pressure-variable oil-supply-type load-deflection-resistant horizontal servo oil cylinder design method |
| CN207377900U (en) * | 2017-10-25 | 2018-05-18 | 烟台比吉流体控制技术有限公司 | A kind of single-acting hydrostatic support actuator |
| CN108194453A (en) * | 2018-03-22 | 2018-06-22 | 哈尔滨理工大学 | A kind of hydrostatic support sealing fluid cylinder pressure of anti-bias load |
Cited By (2)
| 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 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181127 |
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| RJ01 | Rejection of invention patent application after publication |