CN208381026U - A kind of stable type hydraulic cylinder - Google Patents
A kind of stable type hydraulic cylinder Download PDFInfo
- Publication number
- CN208381026U CN208381026U CN201821068791.1U CN201821068791U CN208381026U CN 208381026 U CN208381026 U CN 208381026U CN 201821068791 U CN201821068791 U CN 201821068791U CN 208381026 U CN208381026 U CN 208381026U
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- piston
- oil circuit
- seal
- cylinder body
- ring
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Abstract
A kind of stable type hydraulic cylinder, including cylinder body, piston rod, piston, outer wall of cylinder block is equipped with a pair of close to switch, cylinder body one end is connected and fixed mounting portion, piston rod and piston are set in cylinder body, piston is connected to piston rod bottom, the piston rod other end reaches outside the other end of cylinder body and is rotatablely connected active installation division, piston and cylinder body bottom cavity form the first oil circuit chamber, piston rod and cylinder body middle wall form the second oil circuit chamber, piston rod top is equipped with guide sleeve, guide sleeve is located at cylinder body top opening, first oil circuit chamber is connected to by oil circuit with the first oil circuit seat of outer wall of cylinder block, second oil circuit chamber is connected to by oil circuit with the second oil circuit seat of outer wall of cylinder block, first oil circuit seat is equipped with the first hydraulic fluid port, second oil circuit seat is equipped with the second hydraulic fluid port, first oil circuit seat side wall and the second oil circuit seat side wall pass through oil circuit connection to the same balanced valve.Sealing mechanism is improved, it is ensured that the stability of long-time service improves oil cylinder service life.
Description
Technical field
The utility model relates to a kind of stable type hydraulic cylinders.
Background technique
Hydraulic cylinder is that hydraulic energy is changed into mechanical energy, does straight reciprocating motion or the hydraulic of pendulum motion executes member
Part is widely used in various mechanized equipments.Existing hydraulic cylinder, piston rod and guide sleeve, piston rod and piston,
Sealing performance between piston and cylinder body is not ideal enough, and stability, which is used for a long time, cannot obtain effective guarantee, needs to improve.
Utility model content
The utility model proposes a kind of stable type hydraulic cylinders to change sealing mechanism with solving above-mentioned existing issue
Into, it is ensured that the stability of long-time service improves oil cylinder service life.
The utility model uses following technology:
A kind of stable type hydraulic cylinder, including cylinder body, piston rod, piston, outer wall of cylinder block be equipped with it is a pair of close to switch interface,
Cylinder body one end is connected and fixed mounting portion, and piston rod and piston are set in cylinder body, and piston is connected to piston rod bottom, and piston rod is another
End reaches outside the other end of cylinder body and is rotatablely connected active installation division, and piston and cylinder body bottom cavity form the first oil circuit chamber, piston
Bar and cylinder body middle wall form the second oil circuit chamber, and piston rod top is equipped with guide sleeve, and guide sleeve is located at cylinder body top opening, feature
It is,
First oil circuit chamber is connected to by oil circuit with the first oil circuit seat of outer wall of cylinder block, and the second oil circuit chamber passes through oil circuit and cylinder body
Second oil circuit seat of outer wall is connected to, and the first oil circuit seat is equipped with the first hydraulic fluid port, and the second oil circuit seat is equipped with the second hydraulic fluid port, the first oil
Road seat side wall and the second oil circuit seat side wall pass through oil circuit connection to the same balanced valve；
First axis washer, the second axial gasket, the first sealing, the are disposed between piston rod and guide sleeve from inside to outside
Two sealings, dust washer；First sealing is set in the first annular seal space of guide sleeve, including longitudinally arranged first O-ring seal
With the first rectangular end-face seal ring, the first O-ring seal is located above the first rectangular end-face seal ring and contacts, first party
Shape end-face seal ring and plunger rod contacts；Second sealing is set in the second seal chamber of guide sleeve, the 2nd O including lateral arrangement
Type sealing ring and the second rectangular end-face seal ring, the second O-ring seal are located on the left of the second rectangular end-face seal ring and connect therewith
Touching, the second O-ring seal and the second rectangular end-face seal ring are and plunger rod contacts；Dust washer is located at cylinder body top opening；
Guide sleeve sealing rubber ring is equipped between guide sleeve and inboard wall of cylinder block；
Rod seal is equipped between underpart of the piston rod and piston, the rod seal that rod seal is set to piston is intracavitary, including
The third O-ring seal and third square end-face seal ring of lateral arrangement, third O-ring seal are located at third square end face seal
Circle left side simultaneously contacts, and third O-ring seal and third square end-face seal ring are and plunger rod contacts；
Piston seal is equipped between piston and inboard wall of cylinder block, the piston seal that piston seal is set to piston is intracavitary, and piston is close
It seals two sides at the accent of chamber and is equipped with annular concave platform, piston seal includes set on the intracavitary first piston gasket of piston seal, the
Two piston gaskets, third piston gasket, first piston gasket two sides are equipped with installation concave station, second piston gasket end face
For inverted L shape, first piston gasket two sides are symmetrical arranged, are fastened between installation concave station and piston seal cavity wall on one side, separately
It is fitted on annular concave platform on one side, third piston gasket is located at first piston gasket top surface and is located at the second piston of two sides
Between gasket；
Fixed installation portion is equipped with the mounting hole with bearing holder (housing, cover)；
Active installation division is equipped with the pilot hole with bearing holder (housing, cover).
The utility model the utility model has the advantages that
1, be equipped with balanced valve, when needed can to oil circuit it is hydraulic regulate and control；
2, it is equipped with close to switch interface, can be connected according to demand close to switch, to reach oil cylinder applied to during backgauge
When detection effect；
3, be disposed with from inside to outside between piston rod and guide sleeve first axis washer, the second axial gasket, first sealing,
Second sealing, dust washer cooperate two-stage sealing, then additional dust-proof processing by two-stage axial gasket, improve sealing effect；The
One O-ring seal provides longitudinal force to the first rectangular end-face seal ring, and the second O-ring seal is to the second rectangular end face seal
Circle provides horizontal force, compared with traditional put forth effort, passes through the two kinds of seal forms for having an effect rectangular cooperations, it is ensured that sealing effect
Fruit；
4, it is equipped with rod seal between piston rod and piston, passes through the third O-ring seal and third square of lateral tension
End-face seal ring improves sealing effect；
5, there is piston seal between piston and cylinder body, formed to fall between piston seal chamber and the first piston gasket of assembly
L-type second piston gasket is caught in space on one side, and the annular concave platform of piston seal chamber two sides is another as second piston gasket
The bonding position on side, third piston gasket be located at first piston gasket top surface and be located at two sides second piston gasket it
Between, the resilient support on basis is provided by first piston gasket, by second piston gasket wherein on one side as in sealing contact
Layer, another side provide clamping force for intermediate third piston gasket, it is ensured that the centre that third piston gasket is capable of providing is close
Envelope effect, to improve the sealing effect of piston and oil cylinder.
Detailed description of the invention
Fig. 1 is the utility model structure diagram one.
Fig. 2 is the utility model structure diagram two.
Fig. 3 is the enlarged view that the utility model first seals.
Fig. 4 is the enlarged view that the utility model second seals.
Fig. 5 is the enlarged view of the utility model rod seal.
Fig. 6 is the enlarged view of the utility model piston seal.
Specific embodiment
As shown in Fig. 1 ~ 6, a kind of stable type hydraulic cylinder, including cylinder body 1, piston rod 2, piston 3,1 outer wall of cylinder body are equipped with
For a pair close to switch interface 12,1 one end of cylinder body is connected and fixed mounting portion 11, and piston rod 2 and piston 3 are set in cylinder body, and piston 3 connects
It is connected to 2 bottom of piston rod, 2 other end of piston rod reaches outside the other end of cylinder body 1 and is rotatablely connected active installation division 22, piston
3 form the first oil circuit chamber 31 with 1 bottom cavity of cylinder body, and piston rod 2 and 1 middle wall of cylinder body form the second oil circuit chamber 21,2 top of piston rod
Equipped with guide sleeve 4, guide sleeve 4 is located at 1 top opening of cylinder body.
First oil circuit chamber 31 is connected to by oil circuit with the first oil circuit seat 311 of 1 outer wall of cylinder body, and the second oil circuit chamber 21 passes through oil
Road is connected to the second oil circuit seat 211 of 1 outer wall of cylinder body, and the first oil circuit seat 311 is equipped with the first hydraulic fluid port 312, the second oil circuit seat 211
It is equipped with the second hydraulic fluid port 212,311 side wall of the first oil circuit seat and 211 side wall of the second oil circuit seat pass through oil circuit connection to same
Balanced valve 301.
First axis washer 61, the second axial gasket 62, first are disposed between piston rod 2 and guide sleeve 4 from inside to outside
The 7, second sealing of sealing 8, dust washer 5；First sealing 7 is set in the first annular seal space 71 of guide sleeve 4, including longitudinally arranged
First O-ring seal 72 and the first rectangular end-face seal ring 73, the first O-ring seal 72 are located at the first rectangular end-face seal ring 73
Top simultaneously contacts, and the first rectangular end-face seal ring 73 is contacted with piston rod 2；Second sealing 8 is set to the second close of guide sleeve 4
It seals in chamber 81, the second O-ring seal 82 and the second rectangular end-face seal ring 83 including lateral arrangement, the second O-ring seal 82
Positioned at the second rectangular 83 left side of end-face seal ring and contact, the second O-ring seal 82 and the second rectangular end-face seal ring 83
Contacted with piston rod 2；Dust washer 5 is located at 1 top opening of cylinder body.
Guide sleeve sealing rubber ring 41 is equipped between 1 inner wall of guide sleeve 4 and cylinder body.
Rod seal 900 is equipped between 2 lower part of piston rod and piston 3, rod seal 900 is set to the rod seal of piston 3
In chamber 901, third O-ring seal 902 and third square end-face seal ring 903 including lateral arrangement, third O-ring seal
902 are located at 903 left side of third square end-face seal ring and contact, third O-ring seal 902 and third square end face seal
Circle 903 is contacted with piston rod 2.
Piston seal 9 is equipped between 1 inner wall of piston 3 and cylinder body, piston seal 9 is set in the piston seal chamber 91 of piston 3,
Two sides are equipped with annular concave platform 92 at the accent of piston seal chamber 91, and piston seal 9 includes first in piston seal chamber 91
Piston gasket 93, second piston gasket 94, third piston gasket 95, it is recessed that 93 two sides of first piston gasket are equipped with installation
Platform, 94 end face of second piston gasket are inverted L shape, are symmetrical arranged 93 two sides of first piston gasket, it is recessed to be fastened on installation on one side
Between 91 inner wall of platform and piston seal chamber, another side is fitted on annular concave platform 92, and it is living that third piston gasket 95 is located at first
It fills in 93 top surface of gasket and is located between the second piston gasket 94 of two sides.
Fixed installation portion 11 is equipped with the mounting hole with bearing holder (housing, cover).
Active installation division 22 is equipped with the pilot hole with bearing holder (housing, cover).
Pass through the hydraulic pressure of balanced valve 301 adjustable second oil circuit chamber 21 and the first oil circuit chamber 31.Pass through the first oil
Mouthfuls 312 and second hydraulic fluid port 21 conveying liquid and return liquid and realize stretching for piston 3 and piston rod 2.When needing to be adjusted, can lead to
Overbalance valve 301 is realized.Equipped with that close to switch interface 12, can connect according to demand close to switch, to reach oil cylinder application
Detection effect when during backgauge.
First axis washer 61, the second axial gasket 62, first are disposed between piston rod 2 and guide sleeve 4 from inside to outside
The 7, second sealing of sealing 8, dust washer 5, cooperate two-stage sealing, then additional dust-proof processing by two-stage axial gasket, improve close
Seal effect；First O-ring seal 72 provides longitudinal force to the first rectangular end-face seal ring 73, the second O-ring seal 82 to
Second rectangular end-face seal ring 83 provides horizontal force, compared with traditional put forth effort, the sealing shape of having an effect rectangular by two kinds
Formula cooperation, it is ensured that sealing effect.
It is equipped with rod seal 900 between piston rod 2 and piston 3, passes through the third O-ring seal 902 of lateral tension and the
Three rectangular end-face seal rings 903 improve sealing effect.
There is piston seal 9 between piston 3 and cylinder body 1, between piston seal chamber 91 and the first piston gasket 93 of assembly
It forms inverted L shape second piston gasket and is caught in space on one side, the annular concave platform 92 of 91 two sides of piston seal chamber is used as second piston
The bonding position of 94 another side of gasket, third piston gasket 95 are located at 93 top surface of first piston gasket and are located at two sides
Between second piston gasket 94, the resilient support on basis is provided by first piston gasket 93, by second piston gasket 94
Be wherein used as layer in sealing contact on one side, another side is that intermediate third piston gasket 95 provides clamping force, it is ensured that third is living
The intermediate seal effect that plug gasket 95 is capable of providing, to improve the sealing effect of piston 3 Yu oil cylinder 1.
Claims (3)
1. a kind of stable type hydraulic cylinder, including cylinder body (1), piston rod (2), piston (3), cylinder body (1) outer wall is equipped with a docking
Nearly switch interface (12), cylinder body (1) one end are connected and fixed mounting portion (11), and piston rod (2) and piston (3) are set in cylinder body, living
Plug (3) is connected to piston rod (2) bottom, and piston rod (2) other end reaches outside the other end of cylinder body (1) and rotation connection activity
Mounting portion (22), piston (3) and cylinder body (1) bottom cavity form the first oil circuit chamber (31), piston rod (2) and cylinder body (1) middle wall shape
At the second oil circuit chamber (21), piston rod (2) top is equipped with guide sleeve (4), and guide sleeve (4) is located at cylinder body (1) top opening, feature
It is:
First oil circuit chamber (31) is connected to by oil circuit with the first oil circuit seat (311) of cylinder body (1) outer wall, and the second oil circuit chamber (21) is logical
Oil circuit to be crossed to be connected to the second oil circuit seat (211) of cylinder body (1) outer wall, the first oil circuit seat (311) is equipped with the first hydraulic fluid port (312),
Second oil circuit seat (211) is equipped with the second hydraulic fluid port (212), and the first oil circuit seat (311) side wall and second oil circuit seat (211) side wall are equal
Pass through oil circuit connection to the same balanced valve (301)；
Be disposed with from inside to outside between piston rod (2) and guide sleeve (4) first axis washer (61), the second axial gasket (62),
First sealing (7), the second sealing (8), dust washer (5)；First sealing (7) is set to the first annular seal space (71) of guide sleeve (4)
It is interior, including longitudinally arranged first O-ring seal (72) and the first rectangular end-face seal ring (73), the first O-ring seal (72)
It above the first rectangular end-face seal ring (73) and contacts, the first rectangular end-face seal ring (73) connects with piston rod (2)
Touching；Second sealing (8) is set in second seal chamber (81) of guide sleeve (4), the second O-ring seal (82) including lateral arrangement
With the second rectangular end-face seal ring (83), the second O-ring seal (82) be located on the left of the second rectangular end-face seal ring (83) and with
Contact, the second O-ring seal (82) and the second rectangular end-face seal ring (83) contact with piston rod (2)；Dust washer (5)
At cylinder body (1) top opening；
Guide sleeve sealing rubber ring (41) are equipped between guide sleeve (4) and cylinder body (1) inner wall；
Rod seal (900) are equipped between piston rod (2) lower part and piston (3), rod seal (900) is set to the plug of piston (3)
In bar seal chamber (901), third O-ring seal (902) and third square end-face seal ring (903) including lateral arrangement, the
Three O-ring seals (902) are located on the left of third square end-face seal ring (903) and contact, third O-ring seal (902)
It is contacted with piston rod (2) with third square end-face seal ring (903)；
Piston seal (9) are equipped between piston (3) and cylinder body (1) inner wall, piston seal (9) is set to the piston seal of piston (3)
In chamber (91), two sides are equipped with annular concave platform (92) at the accent of piston seal chamber (91), and piston seal (9) includes close set on piston
Seal first piston gasket (93), the second piston gasket (94), third piston gasket (95) in chamber (91), first piston
Gasket (93) two sides are equipped with installation concave station, and second piston gasket (94) end face is inverted L shape, are symmetrical arranged first piston sealing
(93) two sides are padded, are fastened between installation concave station and piston seal chamber (91) inner wall on one side, another side is fitted in annular concave platform
(92) on, third piston gasket (95) is located at first piston gasket (93) top surface and is located at the second piston gasket of two sides
(94) between.
2. stable type hydraulic cylinder according to claim 1, it is characterised in that: the fixed installation portion (11) is equipped with band
The mounting hole of bearing holder (housing, cover).
3. stable type hydraulic cylinder according to claim 1, it is characterised in that: the active installation division (22) is equipped with band
The pilot hole of bearing holder (housing, cover).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068791.1U CN208381026U (en) | 2018-07-06 | 2018-07-06 | A kind of stable type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068791.1U CN208381026U (en) | 2018-07-06 | 2018-07-06 | A kind of stable type hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208381026U true CN208381026U (en) | 2019-01-15 |
Family
ID=64963122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821068791.1U Active CN208381026U (en) | 2018-07-06 | 2018-07-06 | A kind of stable type hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208381026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111264133A (en) * | 2020-03-01 | 2020-06-12 | 宁波奔野重工股份有限公司 | Adjustable integrated distance adjusting device of double-chain ditcher |
-
2018
- 2018-07-06 CN CN201821068791.1U patent/CN208381026U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111264133A (en) * | 2020-03-01 | 2020-06-12 | 宁波奔野重工股份有限公司 | Adjustable integrated distance adjusting device of double-chain ditcher |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |