CN206429476U - A kind of high-precision hydraulic cylinder - Google Patents
A kind of high-precision hydraulic cylinder Download PDFInfo
- Publication number
- CN206429476U CN206429476U CN201621378735.9U CN201621378735U CN206429476U CN 206429476 U CN206429476 U CN 206429476U CN 201621378735 U CN201621378735 U CN 201621378735U CN 206429476 U CN206429476 U CN 206429476U
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- piston
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- sealing ring
- piston rod
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model belongs to hydraulic cylinder technical field, to solve the technical problem that existing hydraulic cylinder precision is low, there is provided a kind of high-precision hydraulic cylinder, including cylinder body, piston, piston rod and cylinder cap, one end of cylinder body is installed by cylinder cap, a piston is provided with cylinder body, cylinder body is separated into two annular seal spaces by piston, one end of piston rod is connected with piston, the other end passes cylinder cap, the roughness of cylinder inner bore and the piston rod outer surface is 0.2um, linearity≤0.03mm/m, circularity is 0.005mm, the first sealing ring is provided between the piston and cylinder body, second sealing ring and some support rings, the position of the cylinder cap and piston rod Relative friction sets drag ring.The utility model is simple in construction, and accurate pressure can not only be exported using the utility model, and service life is greatly improved.
Description
Technical field
The utility model belongs to hydraulic cylinder technical field, and in particular to a kind of high-precision hydraulic cylinder.
Background technology
Hydraulic cylinder is applied in the field such as metallurgical forging equipment, mine engineering machinery, chemical petroleum equipment, military project and aviation,
Particularly in large-sized hydraulic press equipment, its advantage is more highlighted.Hydraulic press is equipment most widely used during product molding is produced
One of, work characteristics is to transmit energy to complete various pressure processings by the linear stretch process power of hydraulic press, and it needs
High pressure, high accuracy, in particular with the development and popularization and application of microelectric technique, hydraulic technique etc., hydraulic press, which has, more to be entered
The development of one step, while also requiring that its power-equipment is more accurate.General hydraulic cylinder precision is low, and sliding surface is coarse, holds during work
Inner hole of cylinder and piston rod surface are easily scratched, so that hydraulic cylinder leakage, does not reach expected power.
The content of the invention
There is provided a kind of high-precision hydraulic cylinder to solve the low technical problem of existing hydraulic cylinder precision for the utility model.
The technical solution adopted in the utility model is as follows：
Install in cylinder cap, cylinder body a kind of high-precision hydraulic cylinder, including cylinder body, piston, piston rod and cylinder cap, one end of cylinder body
A piston is provided with, cylinder body is separated into two annular seal spaces by piston, and one end of piston rod is connected with piston, and the other end passes cylinder
Lid, the roughness of cylinder inner bore and the piston rod outer surface is that 0.2um, linearity≤0.03mm/m, circularity are 0.005mm,
The first sealing ring, the second sealing ring and some support rings are provided between the piston and cylinder body, the first sealing ring is arranged on work
The middle part of plug, the left and right sides of the first sealing ring respectively symmetrically sets the second sealing ring, and the support ring is separately positioned on left and right
Between the outside of the sealing ring of both sides second and the first sealing ring and the second sealing ring, the cylinder cap and piston rod Relative friction
Position sets drag ring.
It is equipped with the face that the face and drag ring that the support ring is in contact with cylinder inner bore are in contact with piston rod thin
Small oil groove.
The support ring is made with drag ring using copper product.
Temperature sensor or/and displacement transducer are provided with the cylinder body.
The beneficial effects of the utility model：The utility model is simple in construction, is matched somebody with somebody by improving cylinder inner bore and outside piston
Conjunction face and the smoothness on the cylindrical mating surface surface of gland endoporus and piston rod, substantially increase the precision of hydraulic cylinder, and this practicality is new
Tiny oil is equipped with the face that type is in contact by the face being in contact in support ring with cylinder inner bore and drag ring with piston rod
Groove, serves lubrication, adds the wearability of parts, improves hydraulic cylinder life.Can not only using the utility model
Accurate pressure is enough exported, and service life is greatly improved.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1- cylinder bodies, 2- pistons, 3- piston rods, 4- cylinder caps, the sealing rings of 5- first, the sealing rings of 6- second, 7- supports
Ring, 8- drag rings, 9- sensors.
Embodiment
As shown in figure 1, a kind of high-precision hydraulic cylinder, including cylinder body 1, piston 2, piston rod 3 and cylinder cap 4, one end of cylinder body 1
Install in cylinder cap 4, cylinder body 1 and be provided with a piston 2, cylinder body 1 is separated into two annular seal spaces, one end of piston rod 3 and work by piston 2
Plug 2 is connected, and the other end passes cylinder cap 4, and the roughness of the endoporus of cylinder body 1 and piston rod 3 outer surface is 0.2um, linearity≤
0.03mm/m, circularity be 0.005mm, if be provided between the piston 2 and cylinder body 1 first sealing ring 5, the second sealing ring 6 and
Heavenly Stems and Earthly Branches pushing out ring 7, the first sealing ring 5 is arranged on the middle part of piston 2, and the left and right sides of the first sealing ring 5 respectively symmetrically sets second
Sealing ring 6, the support ring 7 is separately positioned on outside and the first sealing ring 5 and second close of the second sealing ring of the left and right sides 6
Between seal ring 6, the support ring 7 is made using copper product, plays guide support, the cylindrical precision of support ring 7 is according to national 7 grades
Precision f7 is designed, the outer surface of the support ring 7（The face that i.e. support ring 7 is in contact with the endoporus of cylinder body 1）Radially set along support ring
Tiny oil groove, a diameter of 2mm-3mm of the tiny oil groove are equipped with, tiny oil groove can play lubrication, increase parts
Wearability, improve hydraulic cylinder life.The position of the cylinder cap 4 and the Relative friction of piston rod 3 sets copper drag ring 8, friction
Ring 8 plays guide support, and the face that drag ring 8 is in contact with piston rod 3 is provided with some tiny oil grooves, and oil groove plays lubrication and made
With.First sealing ring, the second sealing ring use the high-precision high-performance sealed part of import material, considerably increase the essence of oil cylinder
Parasexuality.
According further to being actually needed, temperature sensor or/and displacement transducer are provided with the cylinder body 1, is hydraulic cylinder
Necessary condition is provided into digital area.
Cylinder diameter of the present utility model is maximum up to Φ 1600mm, and pressure is up to 5000T.
Hydraulic cylinder of the present utility model not only increases precision, and substantially increases its service life.
Claims (4)
1. a kind of high-precision hydraulic cylinder, it is characterised in that：Including cylinder body（1）, piston（2）, piston rod（3）And cylinder cap（4）, cylinder body
（1）One end install cylinder cap（4）, cylinder body（1）Inside it is provided with a piston（2）, piston（2）By cylinder body（1）It is separated into two sealings
Chamber, piston rod（3）One end and piston（2）Connection, the other end passes cylinder cap（4）, the cylinder body（1）Endoporus and piston rod（3）
The roughness of outer surface is that 0.2um, linearity≤0.03mm/m, circularity are 0.005mm, the piston（2）With cylinder body（1）Between
It is provided with the first sealing ring（5）, the second sealing ring（6）With some support rings（7）, the first sealing ring（5）It is arranged on piston（2）'s
Middle part, the first sealing ring（5）The left and right sides the second sealing ring is respectively symmetrically set（6）, the support ring（7）It is separately positioned on
The sealing ring of the left and right sides second（6）Outside and the first sealing ring（5）With the second sealing ring（6）Between, the cylinder cap（4）With
Piston rod（3）The position of Relative friction sets drag ring（8）.
2. a kind of high-precision hydraulic cylinder according to claim 1, it is characterised in that：The support ring（7）With cylinder body（1）It is interior
Face and drag ring that hole is in contact（8）With piston rod（3）Tiny oil groove is equipped with the face being in contact.
3. a kind of high-precision hydraulic cylinder according to claim 1 or 2, it is characterised in that：The support ring（7）With drag ring
（8）Made using copper product.
4. a kind of high-precision hydraulic cylinder according to claim 1 or 2, it is characterised in that：The cylinder body（1）Inside it is provided with temperature
Spend sensor or/and displacement transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621378735.9U CN206429476U (en) | 2016-12-15 | 2016-12-15 | A kind of high-precision hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621378735.9U CN206429476U (en) | 2016-12-15 | 2016-12-15 | A kind of high-precision hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206429476U true CN206429476U (en) | 2017-08-22 |
Family
ID=59587887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621378735.9U Active CN206429476U (en) | 2016-12-15 | 2016-12-15 | A kind of high-precision hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206429476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113893721A (en) * | 2021-10-22 | 2022-01-07 | 浡江生态建设集团有限公司 | Insecticide sprayer with automatic dilution structure based on landscaping |
-
2016
- 2016-12-15 CN CN201621378735.9U patent/CN206429476U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113893721A (en) * | 2021-10-22 | 2022-01-07 | 浡江生态建设集团有限公司 | Insecticide sprayer with automatic dilution structure based on landscaping |
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