CN107816469A - A kind of dither servo hydraulic cylinder - Google Patents
A kind of dither servo hydraulic cylinder Download PDFInfo
- Publication number
- CN107816469A CN107816469A CN201711260760.6A CN201711260760A CN107816469A CN 107816469 A CN107816469 A CN 107816469A CN 201711260760 A CN201711260760 A CN 201711260760A CN 107816469 A CN107816469 A CN 107816469A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston
- lid
- cylinder lid
- piston rod
- 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.)
- Pending
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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
- F15B15/1457—Piston rods
-
- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention discloses a kind of dither servo hydraulic cylinder, including cylinder barrel, the left and right end face seal of cylinder barrel is fixed with two identical left cylinder lids and right cylinder lid, piston rod is arranged with cylinder barrel, piston rod both ends are through left cylinder lid and right cylinder lid and are sealingly fastened in left cylinder lid and right cylinder lid；The surface of the left cylinder lid and right cylinder lid is provided with through hole；The piston rod includes being sequentially connected fixed and integrally formed left piston bar, piston and right piston bar, piston side wall outer surface, which is arranged, is fixed with piston seal, piston is tightly connected by piston seal and cylinder barrel side wall inner surfaces, and the wall outer surface of left piston bar and right piston bar is arranged with metal supporting rings and piston rod packing.Cylinder device response is fast, and dynamic characteristic is good, and kinematic accuracy is high, and low amplitude high frequency can be achieved by servo valve group and high accuracy displacement sensor cooperation and vibrate, while can also adjust amplitude as needed.
Description
Technical field
The invention belongs to hydraulic cylinder field, is related to a kind of dither servo hydraulic cylinder.
Background technology
Hydraulic cylinder be by the pressure energy of hydraulic oil change into mechanical energy to realize the executive component of straight reciprocating motion,
Traditional hydraulic cylinder is typically controlled by electrohydraulic servo system or electro-hydraulic proportional system, though have can be to hydraulic system displacement, speed
The physical quantitys such as degree, power are accurately controlled, but can not be realized directly digital control, it is necessary to by D/A-analog/digital conversion
Device, its application is limited to a certain degree, in hydraulic servocontrol, there is higher control to position, speed or power
Required precision processed, and the usual precision of existing hydraulic cylinder is not high, while system low-response also be present, vibration frequency is low, vibration width
Spend the problem of big.
The content of the invention
It is an object of the invention to provide a kind of dither servo hydraulic cylinder, cylinder device response is fast, and dynamic is special
Property it is good, kinematic accuracy is high, and passes through servo valve group and coordinate with high accuracy displacement sensor and low amplitude high frequency can be achieved vibrate, frequency
Rate reaches as high as hertz up to a hundred, while can also adjust amplitude as needed.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of dither servo hydraulic cylinder, including cylinder barrel, the left and right end face seal of cylinder barrel are fixed with two identical left sides
Cylinder cap and right cylinder lid, piston rod is arranged with cylinder barrel, piston rod both ends are through left cylinder lid and right cylinder lid and are sealingly fastened in left cylinder
In lid and right cylinder lid；
The surface of the left cylinder lid and right cylinder lid is provided with through hole；
The piston rod includes being sequentially connected fixed and integrally formed left piston bar, piston and right piston bar, piston
Wall outer surface, which is arranged, is fixed with piston seal, and piston is tightly connected by piston seal and cylinder barrel side wall inner surfaces, left piston
The wall outer surface of bar and right piston bar is arranged with metal supporting rings and piston rod packing, metal supporting rings and piston rod packing
Wall outer surface and left cylinder lid and right cylinder lid in the inwall of through hole compress and be tightly connected；
The end face of the left cylinder lid is fixed with some support bars, and the threaded one end of support bar is fixedly connected with sensor installation
Component, it is arranged in sensor mount assemblies and displacement transducer is installed, one end installation of displacement transducer and the end of left piston bar
Portion.
Further, the left cylinder lid and right cylinder lid include cylinder cap and are fixed on the sealing retainer plate of cylinder cap end face, sealing
The radius of retainer plate is less than the radius 3-5cm of cylinder cap, and the both ends of the surface sealing shroud of cylinder barrel is located at the wall outer surface of sealing retainer plate,
The end face of the both ends of the surface of cylinder barrel and cylinder cap compresses sealing and fixed simultaneously；Metal supporting rings are positioned at the end of sealing retainer plate, metal
Support is bad to be prepared using brass material.
Further, the piston seal and piston rod packing use co-axial seals, and the seal is seal with O ring
Static seal, while drain path has been opened up in piston rod packing.
Further, the end of the left piston bar is provided with groove, and one end of displacement transducer is installed in groove, and
It is threadedly coupled between displacement transducer and left piston bar.
Further, the left cylinder lid and right cylinder Gai Zhongjun are provided with pipeline road, left cylinder lid and right cylinder lid wall outer surface
Between be fixed with servo valve housing, installed on servo valve housing has servo valve surely, and servo valve has hydraulic pressure by pipeline road
Cylinder connects.
Beneficial effects of the present invention：
The cylinder device response of the present invention is fast, and dynamic characteristic is good, and kinematic accuracy is high, and passes through servo valve group and high accuracy
Displacement transducer, which coordinates, can be achieved low amplitude high frequency vibration, and frequency reaches as high as hertz up to a hundred, while can also adjust as needed
Whole amplitude.
End of the invention by the way that one end of displacement transducer to be mounted on to left piston bar, piston rod can be measured
Displacement, in order to the reciprocating motion of piston, measured value accuracy is high, and displacement transducer is located at the groove of left piston boom end
In so that displacement transducer is partially in piston rod, saves space.
Metal support ring is provided with the hydraulic cylinder of the present invention, metal support ring uses brass material, thicker than plastic supporting ring
And it is long, it is oriented to, supporting role is stronger.
Spring is respectively and fixedly provided with two metal supporting rings of the present invention, spring housing is located at the both ends of piston rod, in piston rod
During the high-speed motion of left and right, cushioning effect can be played by the compression of two springs, ensure that piston rod is flat in high-speed motion
Stability.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is servo hydraulic cylinder structural representation of the present invention.
Embodiment
A kind of dither servo hydraulic cylinder, as shown in figure 1, including cylinder barrel 1, the left and right end face seal of cylinder barrel 1 is fixed with
Two identical left cylinder lids 2 and right cylinder lid 3, piston rod 4 are arranged with cylinder barrel 1, the both ends of piston rod 4 pass through left cylinder lid 2 and right cylinder
Lid 3 is simultaneously sealingly fastened in left cylinder lid 2 and right cylinder lid 3；
The left cylinder lid 2 and right cylinder lid 3 include cylinder cap and are fixed on the sealing retainer plate of cylinder cap end face, seal retainer plate
Radius is less than the radius 3-5cm of cylinder cap, and the both ends of the surface sealing shroud of cylinder barrel 1 is located at the wall outer surface of sealing retainer plate, while cylinder
The both ends of the surface of cylinder 1 and the end face of cylinder cap compress sealing and fixed, and the surface of left cylinder lid 2 and right cylinder lid 3 is provided with through hole；
The piston rod 4 includes being sequentially connected fixed and integrally formed left piston bar 401, piston 402 and right piston
Bar 403, the wall outer surface of piston 402, which is arranged, is fixed with piston seal 5, and piston 402 passes through in piston seal 5 and the side wall of cylinder barrel 1
Face seal connects, and piston 402 moves reciprocatingly in the presence of hydraulic oil in hydraulic cylinder, left piston bar 401 and right piston
The wall outer surface of bar 403 is arranged with metal supporting rings 6 and piston rod packing 7, metal supporting rings 6 and piston rod packing 7
The inwall of wall outer surface and through hole in left cylinder lid 2 and right cylinder lid 3, which compresses, to be tightly connected, left piston bar 401 and right piston bar 403
It is sealingly fastened in by metal supporting rings 6 and piston rod packing 7 in the through hole of left cylinder lid 2 and right cylinder lid 3, metal supporting rings 6
In the end of sealing retainer plate, two ends of metal supporting rings 6 are respectively fixed with the first spring 12 and second spring 13, the first bullet
Spring 12 is sheathed on left piston bar 401, and second spring 13 is sheathed on right piston bar 403, and piston rod 4 is when to left movement, and
The end of one spring 12 compresses with the end of piston 402 to connect, and plays cushioning effect, during piston rod 4 moves right, the second bullet
The end of spring 13 compresses with the end of piston 402 to connect, and then plays cushioning effect, and metal support bad 6 uses brass material, than modeling
Expect that support ring is thick and long, it is oriented to, supporting role is stronger；Piston seal 5 and piston rod packing 7 use co-axial seals, should
Seal is the static seal of seal with O ring, while has opened up drain path in piston rod packing 5；
The end face of the left cylinder lid 2 is fixed with some support bars 8, and the threaded one end of support bar 8 is fixedly connected with sensor
Mounting assembly 9, be arranged in sensor mount assemblies 9 and displacement transducer 10 be installed, one end installation of displacement transducer 10 with it is left
The end of piston rod 401；
The end of the left piston bar 401 is provided with groove, and one end of displacement transducer 10 is installed in groove, and displacement
It is threadedly coupled between sensor 10 and left piston bar 401, to measure the displacement of piston rod, in order to the reciprocating motion of piston,
Simultaneously because the one end of displacement transducer 10 is partially in left piston bar, space can be saved；
Pipeline road is provided with the left cylinder lid 2 and right cylinder lid 3, it is solid between left cylinder lid 2 and the wall outer surface of right cylinder lid 3
Surely there is servo valve housing 11, installed on servo valve housing 11 has servo valve surely, and servo valve has hydraulic cylinder by pipeline road
Connection.
Above content is only to structure example of the present invention and explanation, affiliated those skilled in the art couple
Described specific embodiment is made various modifications or supplement or substituted using similar mode, without departing from invention
Structure surmounts scope defined in the claims, all should belong to protection scope of the present invention.
Claims (6)
1. a kind of dither servo hydraulic cylinder, including cylinder barrel (1), it is characterised in that the left and right end face seal of cylinder barrel (1) is fixed
There are two identical left cylinder lids (2) and right cylinder lid (3), piston rod (4) is arranged with cylinder barrel (1), piston rod (4) both ends pass through a left side
Cylinder cap (2) and right cylinder lid (3) are simultaneously sealingly fastened in left cylinder lid (2) and right cylinder lid (3)；
The surface of the left cylinder lid (2) and right cylinder lid (3) is provided with through hole；
The piston rod (4) includes being sequentially connected fixed and integrally formed left piston bar (401), piston (402) and right work
Stopper rod (403), piston (402) wall outer surface, which is arranged, is fixed with piston seal (5), piston (402) by piston seal (5) with
Cylinder barrel (1) side wall inner surfaces are tightly connected, and the wall outer surface of left piston bar (401) and right piston bar (403) is arranged with gold
Belong to the wall outer surface and left cylinder lid of support ring (6) and piston rod packing (7), metal supporting rings (6) and piston rod packing (7)
(2) and in right cylinder lid (3) inwall of through hole compresses sealed connection；
The end face of the left cylinder lid (2) is fixed with some support bars (8), and the threaded one end of support bar (8) is fixedly connected with sensing
Device mounting assembly (9), it is arranged in sensor mount assemblies (9) and displacement transducer (10) is installed, the one of displacement transducer (10)
End is installed on the end of left piston bar (401).
2. a kind of dither servo hydraulic cylinder according to claim 1, it is characterised in that the left cylinder lid (2) and the right side
Cylinder cap (3) includes cylinder cap and is fixed on the sealing retainer plate of cylinder cap end face, and the radius for sealing retainer plate is less than the radius 3- of cylinder cap
5cm, the both ends of the surface sealing shroud of cylinder barrel (1) are located at the wall outer surface of sealing retainer plate, while the both ends of the surface and cylinder cap of cylinder barrel (1)
End face compress sealing fix；Metal supporting rings (6) support bad (6) to use brass material positioned at the end of sealing retainer plate, metal
It is prepared by material.
A kind of 3. dither servo hydraulic cylinder according to claim 1, it is characterised in that two metal supporting rings
(6) end is respectively fixed with the first spring (12) and second spring (13), and the first spring (12) is sheathed on left piston bar (401)
On, second spring (13) is sheathed on right piston bar (403).
A kind of 4. dither servo hydraulic cylinder according to claim 1, it is characterised in that the piston seal (5) and
Piston rod packing (7) uses co-axial seals, and the seal is the static seal of seal with O ring, while in piston rod packing (5)
Drain path is opened up.
A kind of 5. dither servo hydraulic cylinder according to claim 1, it is characterised in that the left piston bar (401)
End be provided with groove, one end of displacement transducer (10) is installed in groove；And displacement transducer (10) and left piston bar
(401) it is threadedly coupled between.
6. a kind of dither servo hydraulic cylinder according to claim 1, it is characterised in that the left cylinder lid (2) and the right side
Pipeline road is provided with cylinder cap (3), servo valve housing is fixed between left cylinder lid (2) and right cylinder lid (3) wall outer surface
(11), installed on servo valve housing (11) has servo valve surely, and servo valve has hydraulic cylinder connection by pipeline road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260760.6A CN107816469A (en) | 2017-12-04 | 2017-12-04 | A kind of dither servo hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260760.6A CN107816469A (en) | 2017-12-04 | 2017-12-04 | A kind of dither servo hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107816469A true CN107816469A (en) | 2018-03-20 |
Family
ID=61605350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711260760.6A Pending CN107816469A (en) | 2017-12-04 | 2017-12-04 | A kind of dither servo hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107816469A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141790A (en) * | 2018-07-24 | 2019-01-04 | 山河智能装备股份有限公司 | Using the energy-efficient high voltage pulse generation device of self-excited vibration |
| CN110594233A (en) * | 2019-09-03 | 2019-12-20 | 浙江大学 | Hydraulic cylinder structure of hydraulic system with higher frequency response requirement and limited installation space |
| CN110953212A (en) * | 2019-12-11 | 2020-04-03 | 常州大学 | High-frequency sound vibration servo hydraulic cylinder |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201836139U (en) * | 2010-07-23 | 2011-05-18 | 三一重工股份有限公司 | Hydraulic cylinder, hydraulic buffering system, excavator and concrete pump truck |
| CN203159123U (en) * | 2013-04-17 | 2013-08-28 | 济宁金世诺机电设备有限公司 | Advancing jack for hydraulic support |
| CN103438048A (en) * | 2013-08-28 | 2013-12-11 | 无锡市长江液压缸厂 | Static pressure supporting high-frequency vibration servo hydraulic cylinder |
| CN103452946A (en) * | 2013-09-05 | 2013-12-18 | 常州大学 | Novel hydraulic cylinder |
| CN105650055A (en) * | 2016-03-31 | 2016-06-08 | 江阴市洪腾机械有限公司 | Dual-piston-rod hydraulic cylinder |
| CN106762957A (en) * | 2017-02-08 | 2017-05-31 | 临沂金利液压科技有限公司 | A kind of hydraulic cylinder with buffer structure |
| WO2017113606A1 (en) * | 2015-12-30 | 2017-07-06 | 山东科技大学 | Integrated hydraulic cylinder having telescoping function and swinging function and application thereof |
| CN207634436U (en) * | 2017-12-04 | 2018-07-20 | 合肥工业大学 | A kind of high-frequency vibration servo hydraulic cylinder |
-
2017
- 2017-12-04 CN CN201711260760.6A patent/CN107816469A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201836139U (en) * | 2010-07-23 | 2011-05-18 | 三一重工股份有限公司 | Hydraulic cylinder, hydraulic buffering system, excavator and concrete pump truck |
| CN203159123U (en) * | 2013-04-17 | 2013-08-28 | 济宁金世诺机电设备有限公司 | Advancing jack for hydraulic support |
| CN103438048A (en) * | 2013-08-28 | 2013-12-11 | 无锡市长江液压缸厂 | Static pressure supporting high-frequency vibration servo hydraulic cylinder |
| CN103452946A (en) * | 2013-09-05 | 2013-12-18 | 常州大学 | Novel hydraulic cylinder |
| WO2017113606A1 (en) * | 2015-12-30 | 2017-07-06 | 山东科技大学 | Integrated hydraulic cylinder having telescoping function and swinging function and application thereof |
| CN105650055A (en) * | 2016-03-31 | 2016-06-08 | 江阴市洪腾机械有限公司 | Dual-piston-rod hydraulic cylinder |
| CN106762957A (en) * | 2017-02-08 | 2017-05-31 | 临沂金利液压科技有限公司 | A kind of hydraulic cylinder with buffer structure |
| CN207634436U (en) * | 2017-12-04 | 2018-07-20 | 合肥工业大学 | A kind of high-frequency vibration servo hydraulic cylinder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141790A (en) * | 2018-07-24 | 2019-01-04 | 山河智能装备股份有限公司 | Using the energy-efficient high voltage pulse generation device of self-excited vibration |
| CN109141790B (en) * | 2018-07-24 | 2020-04-03 | 山河智能装备股份有限公司 | Energy-saving high-voltage pulse generating device applying self-excited vibration |
| CN110594233A (en) * | 2019-09-03 | 2019-12-20 | 浙江大学 | Hydraulic cylinder structure of hydraulic system with higher frequency response requirement and limited installation space |
| CN110953212A (en) * | 2019-12-11 | 2020-04-03 | 常州大学 | High-frequency sound vibration servo hydraulic cylinder |
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