CN109185269A - A kind of hydraulic cylinder - Google Patents
A kind of hydraulic cylinder Download PDFInfo
- Publication number
- CN109185269A CN109185269A CN201811422291.8A CN201811422291A CN109185269A CN 109185269 A CN109185269 A CN 109185269A CN 201811422291 A CN201811422291 A CN 201811422291A CN 109185269 A CN109185269 A CN 109185269A
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- piston
- ring
- sealing element
- ring seals
- 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
Links
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
- F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
-
- 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
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention provides a kind of hydraulic cylinders, including cylinder barrel, piston and sealing element, sealing element is between cylinder barrel and piston, and sealing element is made of square ring and more than two O-ring seals, and described two above O-ring seals nested side-by-sides are in the inside of the square ring；Present invention employs novel seal configurations, in the case where guaranteeing sealing performance, biggish O-ring seals in original Glais ring can be replaced with multiple lesser O-ring seals, to keep the overall structure of hydraulic cylinder more compact, the outer diameter for reducing hydraulic cylinder meets the demand needed under certain special mounting structures to small size multistage hydraulic cylinder.
Description
Technical field
The present invention relates to technical field of hydraulic pressure more particularly to a kind of hydraulic cylinders.
Background technique
Glais ring is mainly used in the sealing of the inner piston of Hydraulic Industry, piston rod, and solution has in high-pressure medium
The leakage of relative movement part and wear problem, also known as " hole combination sealing ".Glais ring is close by a square ring and O shape
Seal composition, O-ring seals are nested on the inside of square ring；The piston seal of multistage hydraulic cylinder generally uses two guiding branch
The movable sealing structure of pushing out ring and a Glais ring composition piston.The piston movable sealing structure of multistage hydraulic cylinder is by guide support ring 1 '
It is formed with Glais ring 2 '.When multistage hydraulic cylinder is small-scale liquid cylinder pressure, first order piston rod 4 ' and second level piston rod 3 ' with respectively
From piston using be integrally formed.This multistage hydraulic cylinder structure of the prior art reduces the outer of hydraulic cylinder to a certain extent
Diameter, but this structure is still unable to meet demand in certain structures arrangement.
Summary of the invention
To overcome problem above existing in the prior art, the present invention provides a kind of hydraulic cylinders, it is characterised in that: including
Cylinder barrel, piston and sealing element, the sealing element between cylinder barrel and piston, the sealing element by square ring and two with
Upper O-ring seals composition, described two above O-ring seals nested side-by-sides are in the inside of the square ring.
On this basis, the quantity of the O-ring seals is two, and the specification of two O-ring seals is identical.
On this basis, the hydraulic cylinder is multistage hydraulic cylinder, between the every grade of cylinder barrel and piston of the multistage hydraulic cylinder
It is equipped with the sealing element.
On this basis, at least one guide support is also equipped between the every grade of cylinder barrel and piston of the multistage hydraulic cylinder
Ring, the guide support ring and the sealing element collectively form the piston movable sealing structure of the multistage hydraulic cylinder.
On this basis, the quantity of the guide support ring of every grade of cylinder barrel of the multistage hydraulic cylinder and piston is two
A, the specification of two guide support rings is identical, is distributed in the two sides of the sealing element.
On this basis, the multistage hydraulic cylinder is small-scale liquid cylinder pressure, the piston of at least one level of the multistage hydraulic cylinder
It is integrally formed with piston rod.
On this basis, the series of the multistage hydraulic cylinder be 3 grades, the first order of the multistage hydraulic cylinder from the outside to the core and
The piston and piston rod of the second level are integrally formed.
Compared with prior art, the beneficial effects of the present invention are:
Present invention employs novel seal configurations, can be close with multiple lesser O shapes in the case where guaranteeing sealing performance
Seal replaces biggish O-ring seals in original Glais ring to reduce hydraulic to keep the overall structure of hydraulic cylinder more compact
The outer diameter of cylinder meets the demand needed under certain special mounting structures to small size multistage hydraulic cylinder.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of sealing element of the invention.
In figure: 1, guide support ring, 2, sealing element, 21, square ring, 22, O-ring seals, 3, second level piston, 4,
First order piston,
Specific embodiment
Below in conjunction with drawings and examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific examples are only used to explain the present invention, is not intended to limit the present invention.
As Figure 1-Figure 2, the present invention schematically illustrates a kind of hydraulic cylinder.
A kind of hydraulic cylinder of present disclosure, as shown in Figure 1 include cylinder barrel, piston and sealing element 2, sealing element be located at cylinder barrel with
Between piston, sealing element is made of square ring and more than two O-ring seals, more than two O-ring seals nested side-by-sides
In the inside of the square ring, Fig. 1 is the preferred embodiment of compact multi-level hydraulic cylinder sealing structure of the invention, this implementation
Multistage hydraulic cylinder in example is 3 grades of nested telescopic hydraulic cylinders, and the movable sealing structure of every grade of piston is by two guide support rings 1 and one
A sealing element 2 forms, and two 1 specifications of guide support ring of every section are identical and are distributed in the two sides of sealing element 2.As shown in Fig. 2, close
Sealing 2 is made of a square ring 21 and the identical O-ring seals 22 of two specifications, and two O-ring seals 22 are side by side
It is nested in the inside of square ring 21.Since to change two lesser O shapes into close for the O-ring seals for enclosing lattice in the prior art
Seal, for example, changing the O-ring seals of end face diameter 5.3mm into the O-ring seals that two end face diameters are 3.1mm, piston rod
Upper lattice adjust accordingly come the trench depth enclosed, also can guarantee the dynamic sealing performance of hydraulic cylinder, can preferably reduce piston
Interval between the thickness and cylinder barrel and piston rod of bar, so as to so that the overall structure of multistage hydraulic cylinder is more compact, from
And reaches some and need the lesser requirement of compact multi-level hydraulic cylinder outer diameter；In the premise for not changing afterbody piston rod size
Under, the first order piston 4 and second level piston 3 and respective piston rod of multistage hydraulic cylinder, which are integrally formed, to be made, can be further
The effective outer diameter for reducing hydraulic cylinder；Due to being innovated to sealing element, so as to not change afterbody piston rod size
Under the premise of, accomplish the outer diameter of small-scale liquid cylinder pressure smaller, is needed under certain special mounting structures with meeting to small size multistage
The demand of hydraulic cylinder.
Only the preferred embodiment of the present invention, those skilled in the art are hydraulic meeting in conjunction with common knowledge shown in Fig. 1 ~ 2
In the case where dynamic sealing performance, various simple deformations or combination can be carried out, to obtain suitable multistage hydraulic cylinder outer diameter ruler
It is very little.Such as on the inside of the square ring of sealing element nested more than two identical or different specifications O-ring seals, it is dynamic in piston
The guide support ring and sealing element of identical or different quantity are used in sealing structure, at least one piston and piston rod are integrally formed
Production etc..It above should all be within protection scope of the present invention.
Present invention employs novel seal configurations, in the case where guaranteeing sealing performance, can use multiple lesser O
Shape sealing ring replaces biggish O-ring seals in original Glais ring to reduce to keep the overall structure of hydraulic cylinder more compact
The outer diameter of hydraulic cylinder meets the demand needed under certain special mounting structures to small size multistage hydraulic cylinder.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification and
Environment, and can be changed within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of protection of the claims.
Claims (7)
1. a kind of hydraulic cylinder, it is characterised in that: including cylinder barrel, piston and sealing element, the sealing element be located at cylinder barrel and piston it
Between, the sealing element is made of square ring and more than two O-ring seals, and described two above O-ring seals are embedding side by side
It covers in the inside of the square ring.
2. a kind of hydraulic cylinder according to claim 1, it is characterised in that: the quantity of the O-ring seals is two, two
The specification of the O-ring seals is identical.
3. a kind of hydraulic cylinder according to claim 2, it is characterised in that: the hydraulic cylinder is multistage hydraulic cylinder, described more
The sealing element is equipped between the every grade of cylinder barrel and piston of grade hydraulic cylinder.
4. a kind of hydraulic cylinder according to claim 3, it is characterised in that: the every grade of cylinder barrel and piston of the multistage hydraulic cylinder
Between be also equipped at least one guide support ring, the guide support ring and the sealing element collectively form the multistage hydraulic
The piston movable sealing structure of cylinder.
5. a kind of hydraulic cylinder according to claim 4, it is characterised in that: the every grade of cylinder barrel and piston of the multistage hydraulic cylinder
The guide support ring quantity be two, the specification of two guide support rings is identical, is distributed in the sealing element
Two sides.
6. a kind of hydraulic cylinder according to claim 5, it is characterised in that: the multistage hydraulic cylinder is small-scale liquid cylinder pressure, institute
The piston and piston rod for stating at least one level of multistage hydraulic cylinder are integrally formed.
7. a kind of hydraulic cylinder according to claim 6, it is characterised in that: the series of the multistage hydraulic cylinder is 3 grades, described
The piston and piston rod of the multistage hydraulic cylinder first order from the outside to the core and the second level are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811422291.8A CN109185269A (en) | 2018-11-27 | 2018-11-27 | A kind of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811422291.8A CN109185269A (en) | 2018-11-27 | 2018-11-27 | A kind of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109185269A true CN109185269A (en) | 2019-01-11 |
Family
ID=64938064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811422291.8A Pending CN109185269A (en) | 2018-11-27 | 2018-11-27 | A kind of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109185269A (en) |
-
2018
- 2018-11-27 CN CN201811422291.8A patent/CN109185269A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MY196914A (en) | Depth compensated actuator and use of same in association with a tranportable heave compensator | |
| CN108019394A (en) | A kind of hydraulic cylinder piston rod construction | |
| CN109185269A (en) | A kind of hydraulic cylinder | |
| CN110345127B (en) | Multi-stage hydraulic cylinder | |
| CN204459167U (en) | A kind of two-way general plug sealing ring | |
| CN204300013U (en) | A kind of hydraulic jack | |
| CN104405720A (en) | Piston-free reciprocating hydraulic cylinder | |
| CN202646221U (en) | Large aperture hydraulic cylinder | |
| CN203847467U (en) | Sealing structure of narrow piston hydraulic cylinder | |
| CN204985161U (en) | Superhigh pressure hydro -cylinder | |
| CN203098461U (en) | Hydraulic cylinder and sealing assembly thereof | |
| JP2007100646A (en) | Piston ring | |
| CN206801847U (en) | A kind of piston that can improve nuclear submarine rudder arrangement servo variable pump sealing property | |
| CN208919323U (en) | A kind of long life and the good combination packing ring of sealing effect | |
| CN208169233U (en) | A kind of synchronous collaboration hydraulic cylinder | |
| CN206988213U (en) | A kind of oil cylinder interval nested structure | |
| CN216241609U (en) | Oil leakage prevention oil cylinder | |
| CN205036873U (en) | Eliminate cone valve of mechanical noise | |
| CN204371820U (en) | Without piston reciprocating oil hydraulic cylinder | |
| CN207879751U (en) | Constant speed oil cylinder | |
| CN205203179U (en) | Tension device | |
| CN205780032U (en) | A kind of modified model oil cylinder cylinder cap seals structure | |
| CN207879762U (en) | A kind of multistage hydraulic cylinder piston ring combined sealing structure | |
| CN204677784U (en) | A kind of three eccentricity hard seal butterfly valve | |
| CN207470520U (en) | A kind of high-efficiency and energy-saving type more piece cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190111 |
|
| WD01 | Invention patent application deemed withdrawn after publication |