CN207634436U - A kind of high-frequency vibration servo hydraulic cylinder - Google Patents
A kind of high-frequency vibration servo hydraulic cylinder Download PDFInfo
- Publication number
- CN207634436U CN207634436U CN201721663139.XU CN201721663139U CN207634436U CN 207634436 U CN207634436 U CN 207634436U CN 201721663139 U CN201721663139 U CN 201721663139U CN 207634436 U CN207634436 U CN 207634436U
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- cylinder
- piston
- lid
- cylinder lid
- piston rod
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Abstract
The utility model discloses a kind of high-frequency vibration servo hydraulic cylinder, including cylinder barrel, the left and right end face seal of cylinder barrel is fixed there are two identical left cylinder lid and right cylinder lid, is arranged with piston rod in cylinder barrel, piston rod both ends pass 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 vibration can be achieved by servo valve group and high accuracy displacement sensor cooperation, while can also adjust amplitude as needed.
Description
Technical field
The utility model belongs to hydraulic cylinder field, is related to a kind of high-frequency vibration servo hydraulic cylinder.
Background technology
Hydraulic cylinder be by the pressure energy of hydraulic oil be converted to mechanical energy to realize the executive component of straight reciprocating motion,
Traditional hydraulic cylinder is generally controlled by electrohydraulic servo system or electro-hydraulic proportional system, though the displacement that having can be to hydraulic system, speed
The physical quantitys such as degree, power are accurately controlled, but can not achieve directly it is digital control, need through D/A-analog/digital conversion
Device limits its scope of application to a certain degree, in hydraulic servocontrol, has higher control to position, speed or power
Required precision processed, and the usual precision of existing hydraulic cylinder is not high, while there is also system low-response, vibration frequency is low, vibrates width
Spend big problem.
Utility model content
The purpose of this utility model is to provide a kind of high-frequency vibration servo hydraulic cylinder, cylinder device response is fast, moves
Step response is good, and kinematic accuracy is high, and coordinates achievable low amplitude high frequency to shake by servo valve group and high accuracy displacement sensor
Dynamic, frequency reaches as high as hertz up to a hundred, while can also adjust amplitude as needed.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of high-frequency vibration servo hydraulic cylinder, including cylinder barrel, there are two an identical left sides for the left and right end face seal fixation of cylinder barrel
Cylinder cap and right cylinder lid, piston rod is arranged in cylinder barrel, and piston rod both ends pass 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 inner wall of through-hole compress and be tightly connected；
The end face of the left cylinder lid is fixed with several supporting rods, and the threaded one end of supporting rod is fixedly connected with sensor installation
Component is arranged in sensor mount assemblies and is equipped with displacement sensor, the end of one end installation and left piston bar of displacement sensor
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 set to 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 fixes simultaneously；Metal supporting rings are located 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 are all made of co-axial seals, which 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 sensor is installed in groove, and
It is threadedly coupled between displacement sensor 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.
The beneficial effects of the utility model：
The cylinder device response of the utility model is fast, and dynamic characteristic is good, and kinematic accuracy is high, and passes through servo valve group and height
Low amplitude high frequency vibration can be achieved in the cooperation of Accuracy Displacement sensor, and frequency reaches as high as hertz up to a hundred, while also can be according to need
Adjust amplitude.
The utility model can measure piston by the way that one end of displacement sensor to be mounted on to the end of left piston bar
The displacement of bar, in order to the reciprocating motion of piston, measured value accuracy is high, and displacement sensor is located at left piston boom end
In groove so that displacement sensor is partially in piston rod, saves space.
Metal support ring is equipped in the hydraulic cylinder of the utility model, metal support ring uses brass material, compares plastic supporting
Ring is thick and long, and guiding, supporting role are stronger.
Spring is respectively and fixedly provided in two metal supporting rings of the utility model, spring pocket is set to the both ends of piston rod, in work
When stopper rod or so high-speed motion, cushioning effect can be played by the compression of two springs, ensure piston rod in high-speed motion
Stationarity.
Description of the drawings
The utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the utility model servo hydraulic cylinder structural schematic diagram.
Specific implementation mode
A kind of high-frequency vibration 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 is arranged in cylinder barrel 1, and 4 both ends of piston rod 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 the sealing retainer plate for being fixed on 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 set to 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 fix, 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 403,402 wall outer surface of piston, which is arranged, is fixed with piston seal 5, and piston 402 passes through in piston seal 5 and 1 side wall of cylinder barrel
Face seal connects, and piston 402 moves reciprocatingly under the action 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 inner wall 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 the through-hole of left cylinder lid 2 and right cylinder lid 3 by metal supporting rings 6 and piston rod packing 7, metal supporting rings 6
In the end of sealing retainer plate, two 6 ends of metal supporting rings 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 moving downward, and
The end of one spring 12 is compressed with 402 end of piston to connect, and plays cushioning effect, during piston rod 4 moves right, the second bullet
The end of spring 13 is compressed with 402 end of piston 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, guiding, supporting role are stronger；Piston seal 5 and piston rod packing 7 are all made of co-axial seals, should
Sealing element is the static seal of seal with O ring, while having opened up drain path in piston rod packing 5；
The end face of the left cylinder lid 2 is fixed with several supporting rods 8, and the threaded one end of supporting rod 8 is fixedly connected with sensor
Mounting assembly 9 is arranged in sensor mount assemblies 9 and is equipped with displacement sensor 10, one end installation of displacement sensor 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 sensor 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 10 one end of displacement sensor is partially in left piston bar, space can be saved；
It is provided with pipeline road in the left cylinder lid 2 and right cylinder lid 3, consolidates between 3 wall outer surface of left cylinder lid 2 and right cylinder lid
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 the utility model structure example and explanation, the technology people of affiliated the art
Member makes various modifications or additions to the described embodiments or substitutes by a similar method, without departing from reality
With novel structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (6)
1. a kind of high-frequency vibration servo hydraulic cylinder, including cylinder barrel (1), which is characterized in that the left and right end face seal of cylinder barrel (1) is fixed
There are two identical left cylinder lid (2) and right cylinder lid (3), piston rod (4) is arranged in 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 support ring (6) and piston rod packing (7), the wall outer surface and left cylinder lid of metal supporting rings (6) and piston rod packing (7)
(2) and in right cylinder lid (3) inner wall of through-hole compresses sealed connection；
The end face of the left cylinder lid (2) is fixed with several supporting rods (8), and the threaded one end of supporting rod (8) is fixedly connected with sensing
Device mounting assembly (9) is arranged in sensor mount assemblies (9) and is equipped with displacement sensor (10), and the one of displacement sensor (10)
End is installed on the end of left piston bar (401).
2. a kind of high-frequency vibration servo hydraulic cylinder according to claim 1, which is characterized 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 set to 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) are located at the end of sealing retainer plate, and metal supports bad (6) to use brass material
It is prepared by material.
3. a kind of high-frequency vibration servo hydraulic cylinder according to claim 1, which is characterized 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).
4. a kind of high-frequency vibration servo hydraulic cylinder according to claim 1, which is characterized in that the piston seal (5) and
Piston rod packing (7) is all made of co-axial seals, which is the static seal of seal with O ring, while in piston rod packing (5)
Drain path is opened up.
5. a kind of high-frequency vibration servo hydraulic cylinder according to claim 1, which is characterized in that the left piston bar (401)
End be provided with groove, one end of displacement sensor (10) is installed in groove；And displacement sensor (10) and left piston bar
(401) it is threadedly coupled between.
6. a kind of high-frequency vibration servo hydraulic cylinder according to claim 1, which is characterized in that the left cylinder lid (2) and the right side
It is provided with pipeline road in 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 |
|---|---|---|---|
| CN201721663139.XU CN207634436U (en) | 2017-12-04 | 2017-12-04 | A kind of high-frequency vibration servo hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721663139.XU CN207634436U (en) | 2017-12-04 | 2017-12-04 | A kind of high-frequency vibration servo hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207634436U true CN207634436U (en) | 2018-07-20 |
Family
ID=62855393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721663139.XU Expired - Fee Related CN207634436U (en) | 2017-12-04 | 2017-12-04 | A kind of high-frequency vibration servo hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207634436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816469A (en) * | 2017-12-04 | 2018-03-20 | 合肥工业大学 | A kind of dither servo hydraulic cylinder |
-
2017
- 2017-12-04 CN CN201721663139.XU patent/CN207634436U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816469A (en) * | 2017-12-04 | 2018-03-20 | 合肥工业大学 | A kind of dither servo hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180720 Termination date: 20181204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |