CN106321561A - Sealing structure of hydraulic cylinder cover - Google Patents
Sealing structure of hydraulic cylinder cover Download PDFInfo
- Publication number
- CN106321561A CN106321561A CN201510350121.3A CN201510350121A CN106321561A CN 106321561 A CN106321561 A CN 106321561A CN 201510350121 A CN201510350121 A CN 201510350121A CN 106321561 A CN106321561 A CN 106321561A
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- China
- Prior art keywords
- cylinder
- cylinder body
- sealing structure
- cap
- piston rod
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Abstract
The invention discloses a sealing structure of a hydraulic cylinder cover. A hydraulic cylinder includes a cylinder body, a piston, a piston rod, a cylinder bottom and a cylinder cover; the cylinder body is provided with an axially through cavity; the piston slides in the cavity; one end of the piston rod is fixed to the piston, and the other end of the piston rod extends out of the cavity; the cylinder bottom is fixed at one end of the cylinder body in a sealing manner; the cylinder cover sleeves the outer side of the piston rod, and is fixed at the other end of the cylinder body; one end, positioned on the cylinder cover, of the cylinder body is sleeved with a second cylinder body flange; the end surface of the second cylinder body flange is level with the end surface of the cylinder body; a cylinder jacket and a guide sleeve are arranged between the second cylinder body flange and the cylinder cover; the guide sleeve is positioned between the cylinder jacket and the cylinder cover; the cylinder jacket and the guide sleeve sleeve the outer side of the piston rod; and a sealing ring is arranged between the contacted surfaces of the cylinder jacket and the cylinder body. The sealing structure of the hydraulic cylinder cover is convenient for installation of the hydraulic cylinder, low in manufacturing cost and excellent in sealing performance.
Description
Technical field
The application relates to a kind of hydraulic cylinder, particularly relates to the sealing structure of a kind of hydraulic cylinder cylinder cap.
Background technology
Hydraulic energy is changed into mechanical energy, does straight reciprocating motion (or oscillating motion) by hydraulic cylinder
Hydraulic actuator.Its simple in construction, reliable operation.When realizing moving back and forth with it, can remove from and subtracting
Speed variator, and there is no drive gap, stable movement, therefore obtain in the hydraulic system of various machineries
Extensively application.The pressure reduction on hydraulic cylinder power output and piston effective area and both sides thereof is directly proportional；Hydraulic cylinder base
It is made up of with exhaust apparatus cylinder barrel and cylinder cap, piston and piston rod, sealing device, buffer unit on Ben.
There is the technical problem that assembling is inconvenient, sealing is poor in traditional hydraulic cylinder.
Summary of the invention
It is an object of the invention to provide the sealing structure of a kind of hydraulic cylinder cylinder cap, to overcome in prior art
Deficiency.
For achieving the above object, the present invention provides following technical scheme:
The embodiment of the present application discloses the sealing structure of a kind of hydraulic cylinder cylinder cap, described hydraulic cylinder include cylinder body,
Piston, piston rod, cylinder bottom and cylinder cap, described cylinder body has the cavity communicated vertically, and described piston is sliding
Moving in described cavity, one end of described piston rod is fixed with described piston, and the other end extends described chamber
The outside of body, described cylinder bottom is sealingly fastened in one end of described cylinder body, and described cylinder cap is sheathed on described piston
The other end of described cylinder body is also fixed in the outside of bar, and described cylinder body is positioned at one end of described cylinder cap and is arranged with
Second cylinder body flange, the end face of described second cylinder body flange is concordant with the end face of described cylinder body, and described second
Be additionally provided with cylinder sleeve and fairlead between cylinder body flange and described cylinder cap, described fairlead be positioned at described cylinder sleeve and
Between cylinder cap, described cylinder sleeve and fairlead are sheathed on the outside of piston rod, described cylinder sleeve and described cylinder body
Sealing ring it is provided with between contact surface.
Preferably, in the sealing structure of above-mentioned a kind of hydraulic cylinder cylinder cap, described cylinder sleeve is towards described cylinder
The recessed sealing ring mounting groove being formed with annular of the one side of body, described sealing ring is fixed on described sealing ring peace
In tankage.
Preferably, in the sealing structure of above-mentioned a kind of hydraulic cylinder cylinder cap, described second cylinder body flange with
It is welded and fixed between described cylinder body.
Preferably, in the sealing structure of above-mentioned a kind of hydraulic cylinder cylinder cap, described cylinder sleeve is towards described chamber
The side of body protrudes out the convex extension part of annular, and the external diameter of this convex extension part is equal to the diameter of described cavity, described
Convex extension part is positioned at described cavity.
Preferably, in the sealing structure of above-mentioned a kind of hydraulic cylinder cylinder cap, the plated surface of described piston rod
Having layers of chrome, the thickness of this layers of chrome is 0.05mm.
Preferably, in the sealing structure of above-mentioned a kind of hydraulic cylinder cylinder cap, the inner surface plating of described cylinder body
Having layers of chrome, the thickness of this layers of chrome is 30～40 μm.
Preferably, in the sealing structure of above-mentioned a kind of hydraulic cylinder cylinder cap, described piston and described cylinder body
Inwall between be provided with sealing ring.
Preferably, in the sealing structure of above-mentioned a kind of hydraulic cylinder cylinder cap, described cylinder cap and described piston
Dust ring and rubber oil sea it is additionally provided with between bar.
Preferably, in the sealing structure of above-mentioned a kind of hydraulic cylinder cylinder cap, the company of offering on described cylinder bottom
Lead in the air release valve hole of described cavity.
Compared with prior art, it is an advantage of the current invention that: present hydraulic cylinder is easy for installation, be fabricated to
This low, good seal performance.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments described in the application, for those of ordinary skill in the art
From the point of view of, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 show the structural representation of hydraulic cylinder in the specific embodiment of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Detailed description, it is clear that described embodiment is only a part of embodiment of the present invention rather than complete
The embodiment in portion.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work on the premise of the every other embodiment that obtained, broadly fall into the scope of protection of the invention.
Shown in ginseng Fig. 1, hydraulic cylinder includes cylinder body 1, piston 2, piston rod 3, cylinder bottom 4 and cylinder cap 5,
Cylinder body 1 has the cavity communicated vertically, and piston 2 slides in described cavity, described piston rod 3
One end is fixed with described piston 2, and the other end extends the outside of described cavity, and described cylinder bottom 4 seals solid
Due to one end of described cylinder body 1, described cylinder cap 5 is sheathed on the outside of described piston rod 3 and is fixed on institute
State the other end of cylinder body 1.
One end of described cylinder body 1 is arranged with the first cylinder body flange 6, and the end face of the first cylinder body flange 6 is with described
The end face of cylinder body 1 is concordant, detachable by bolt between described cylinder bottom 4 and described first cylinder body flange 6
Fixing, it is provided with sealing ring 7 between described cylinder bottom 4 and the contact surface of described cylinder body 1.
Further, described cylinder bottom 4 is towards the recessed sealing ring being formed with annular of one side of described cylinder body 1
Mounting groove, described sealing ring 7 is fixed in described sealing ring mounting groove.
Further, it is welded and fixed between the first cylinder body flange 6 and described cylinder body 1.
Further, described cylinder bottom 4 protrudes out annular convex extension part 41 towards the side of described cavity, should
The external diameter of convex extension part 41 is equal to the diameter of described cavity, and described convex extension part 41 is positioned at described cavity.
Described cylinder body 1 is arranged with the second cylinder body flange 8 relative to the other end of the first cylinder body flange 6, and second
The end face of cylinder body flange 8 is concordant with the end face of described cylinder body 1, described second cylinder body flange 8 and described cylinder
Being additionally provided with cylinder sleeve 9 and fairlead 10 between lid 5, described fairlead 10 is positioned at described cylinder sleeve 9 and cylinder cap 5
Between.Described cylinder sleeve 9 and fairlead 10 are sheathed on the outside of piston rod 3.Described cylinder sleeve 9 and described cylinder
Sealing ring 11 it is provided with between the contact surface of body 1.
Further, described cylinder sleeve 9 is towards the recessed sealing ring being formed with annular of one side of described cylinder body 1
Mounting groove, described sealing ring 11 is fixed in described sealing ring mounting groove.
Further, it is welded and fixed between described second cylinder body flange 8 and described cylinder body 1.
Further, described cylinder sleeve 9 protrudes out annular convex extension part 91 towards the side of described cavity, should
The external diameter of convex extension part 91 is equal to the diameter of described cavity, and described convex extension part 91 is positioned at described cavity.
Described second cylinder body flange 8, cylinder sleeve 9 and cylinder cap 5 offer respectively communicate vertically there is interior spiral shell
The installing hole on stricture of vagina surface, cylinder sleeve 9 and cylinder cap 5 are fixed on institute by being arranged in the bolt 12 of described installing hole
State on the second cylinder body flange 8.
Described cylinder cap 5 protrudes out annular convex extension part 51, described cylinder sleeve 9 towards the side of described cylinder sleeve 9
Coordinating described convex extension part 51 to be formed with stage portion 92, described convex extension part 51 is resisted against described stage portion 92
Side, is provided with the sealing ring 13 of annular between described convex extension part 51 and described stage portion 92.
Further, the recessed sealing ring mounting groove being formed with annular, described sealing on described convex extension part 51
Circle 13 is fixed in described sealing ring mounting groove.
Further, it is additionally provided with dust ring 14 and rubber oil sea between described cylinder cap 5 and described piston rod 3
15。
Further, it is provided with sealing ring 16 between described piston 2 and the inwall of described cylinder body 1.
Further, described cylinder bottom 4 offers the air release valve hole 17 being communicated in described cavity.
Further, the surface of described piston rod 3 is coated with layers of chrome, and the thickness of this layers of chrome is 0.05mm.
Further, the inner surface of described cylinder body 1 is coated with layers of chrome, and the thickness of this layers of chrome is 30～40 μm.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to
One entity or operation are separated with another entity or operating space, and not necessarily requires or imply
Relation or the order of any this reality is there is between these entities or operation.And, term " includes ",
" comprise " or its any other variant is intended to comprising of nonexcludability, so that include that one is
The process of row key element, method, article or equipment not only include those key elements, but also include the brightest
Other key elements really listed, or also include intrinsic for this process, method, article or equipment
Key element.In the case of there is no more restriction, statement " including ... " key element limited,
It is not precluded from there is also in including the process of described key element, method, article or equipment other identical
Key element.
The above is only the detailed description of the invention of the application, it is noted that general for the art
For logical technical staff, on the premise of without departing from the application principle, it is also possible to make some improvement and profit
Decorations, these improvements and modifications also should be regarded as the protection domain of the application.
Claims (9)
1. the sealing structure of a hydraulic cylinder cylinder cap, it is characterised in that described hydraulic cylinder includes cylinder body, work
Plug, piston rod, cylinder bottom and cylinder cap, described cylinder body has the cavity communicated vertically, and described piston slides
In described cavity, one end of described piston rod is fixed with described piston, and the other end extends described cavity
Outside, described cylinder bottom is sealingly fastened in one end of described cylinder body, and described cylinder cap is sheathed on described piston rod
Outside and be fixed on the other end of described cylinder body, described cylinder body is positioned at one end of described cylinder cap and is arranged with
Two cylinder body flanges, the end face of described second cylinder body flange is concordant with the end face of described cylinder body, described second cylinder
Being additionally provided with cylinder sleeve and fairlead between body flange and described cylinder cap, described fairlead is positioned at described cylinder sleeve and cylinder
Between lid, described cylinder sleeve and fairlead are sheathed on the outside of piston rod, and described cylinder sleeve connects with described cylinder body
Sealing ring it is provided with between contacting surface.
The sealing structure of a kind of hydraulic cylinder cylinder cap the most according to claim 1, it is characterised in that: institute
Stating the cylinder sleeve recessed sealing ring mounting groove being formed with annular of one side towards described cylinder body, described sealing ring is solid
In described sealing ring mounting groove.
The sealing structure of a kind of hydraulic cylinder cylinder cap the most according to claim 1, it is characterised in that: institute
State and be welded and fixed between the second cylinder body flange and described cylinder body.
The sealing structure of a kind of hydraulic cylinder cylinder cap the most according to claim 1, it is characterised in that: institute
Stating cylinder sleeve and protrude out the convex extension part of annular towards the side of described cavity, the external diameter of this convex extension part is equal to described
The diameter of cavity, described convex extension part is positioned at described cavity.
The sealing structure of a kind of hydraulic cylinder cylinder cap the most according to claim 1, it is characterised in that: institute
The surface stating piston rod is coated with layers of chrome, and the thickness of this layers of chrome is 0.05mm.
The sealing structure of a kind of hydraulic cylinder cylinder cap the most according to claim 1, it is characterised in that: institute
The inner surface stating cylinder body is coated with layers of chrome, and the thickness of this layers of chrome is 30～40 μm.
The sealing structure of a kind of hydraulic cylinder cylinder cap the most according to claim 1, it is characterised in that: institute
State and be provided with sealing ring between the inwall of piston and described cylinder body.
The sealing structure of a kind of hydraulic cylinder cylinder cap the most according to claim 1, it is characterised in that: institute
State and between cylinder cap and described piston rod, be additionally provided with dust ring and rubber oil sea.
The sealing structure of a kind of hydraulic cylinder cylinder cap the most according to claim 1, it is characterised in that: institute
State and on cylinder bottom, offer the air release valve hole being communicated in described cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510350121.3A CN106321561A (en) | 2015-06-23 | 2015-06-23 | Sealing structure of hydraulic cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510350121.3A CN106321561A (en) | 2015-06-23 | 2015-06-23 | Sealing structure of hydraulic cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106321561A true CN106321561A (en) | 2017-01-11 |
Family
ID=57728013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510350121.3A Withdrawn CN106321561A (en) | 2015-06-23 | 2015-06-23 | Sealing structure of hydraulic cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321561A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412923A (en) * | 2020-11-27 | 2021-02-26 | 徐州徐工液压件有限公司 | Flange type connecting vertical hydraulic cylinder with embedded guide sleeve |
-
2015
- 2015-06-23 CN CN201510350121.3A patent/CN106321561A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412923A (en) * | 2020-11-27 | 2021-02-26 | 徐州徐工液压件有限公司 | Flange type connecting vertical hydraulic cylinder with embedded guide sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170111 |