CN206943116U - A kind of waterproof hydraulic cylinder - Google Patents
A kind of waterproof hydraulic cylinder Download PDFInfo
- Publication number
- CN206943116U CN206943116U CN201720446844.8U CN201720446844U CN206943116U CN 206943116 U CN206943116 U CN 206943116U CN 201720446844 U CN201720446844 U CN 201720446844U CN 206943116 U CN206943116 U CN 206943116U
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- Prior art keywords
- ring
- cylinder
- seal
- piston
- lip
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Abstract
The utility model discloses a kind of waterproof hydraulic cylinder,Including earrings and cylinder body,The inside of earrings is installed with earrings fixing hole,The inside left of cylinder body is provided with dust washer,The first O-ring seal is provided with the right side of dust washer,Lower position outside cylinder body close to the first O-ring seal is provided with the second y-type seal ring,Outside cylinder body the first hydraulic fluid port is provided with above the right side of cylinder cap,Piston is provided with the right side of raised pressing plate,The outside of piston is provided with the first y-type seal ring,Wear ring is provided with the right side of first y-type seal ring,This new structure is scientific and reasonable,It is safe and convenient to use,There is provided lip seal mechanism,And the μ of the surface roughness Ra of the protective case in lip seal mechanism≤0.4,Oil seal lip can be made to have good protection,Lip seal mechanism can greatly improve the sealing effectiveness of this hydraulic cylinder,Prevent into water,There is provided the second O-ring seal,Stabilized seal between piston and piston rod can be made.
Description
Technical field
Hydraulic cylinder technical field is the utility model is related to, specially a kind of waterproof hydraulic cylinder.
Background technology
Hydraulic cylinder be hydraulic energy is changed into mechanical energy, the hydraulic pressure that does straight reciprocating motion (or oscillating motion) performs member
Part.Its simple in construction, reliable operation.During with it to realize reciprocating motion, deceleration device can be removed from, and do not have drive gap,
Stable movement, therefore be used widely in various mechanical hydraulic systems.Hydraulic cylinder power output and piston effective area and
The pressure difference on its both sides is directly proportional；Hydraulic cylinder substantially by cylinder barrel and cylinder cap, piston and piston rod, sealing device, buffer unit with
Exhaust apparatus forms.For buffer unit with exhaust apparatus depending on concrete application occasion, other devices are then essential.
There are some defects in existing hydraulic cylinder, such as the sealing effectiveness of hydraulic cylinder is poor in use, waterproof effect
Fruit is bad, and hydraulic cylinder causes piston seal to be squeezed failure easily by back pressure.
Utility model content
The purpose of this utility model is to provide a kind of waterproof hydraulic cylinder, to solve the hydraulic pressure proposed in above-mentioned background technology
The sealing effectiveness of cylinder is poor, and waterproof effect is bad, and hydraulic cylinder causes piston seal to be squeezed mistake easily by back pressure
The problem of effect.
To achieve the above object, the utility model provides following technical scheme：A kind of waterproof hydraulic cylinder, including earrings are fixed
Hole, earrings, nut, dust washer, lip-type seal mechanism, protective case, guide sleeve, oil seal lip, the first O-ring seal, first
It is hydraulic fluid port, cylinder body, raised pressing plate, the second O-ring seal, card key cap, the second hydraulic fluid port, piston rod, cylinder bottom, bushing, check ring, resistance to
Bull ring, the first y-type seal ring, piston, cylinder cap and the second y-type seal ring, the inside of the earrings are installed with earrings fixing hole,
And the right-hand member of earrings is provided with nut, the inside left of the cylinder body is provided with dust washer, and the top of dust washer is set
There is lip-type seal mechanism, the first O-ring seal is provided with the right side of the dust washer, close first is O-shaped outside the cylinder body
The lower position of sealing ring is provided with the second y-type seal ring, and the inside left of cylinder body is provided with cylinder cap, outside the cylinder body
The first hydraulic fluid port is provided with above the right side of cylinder cap, and cylinder interior is provided with raised pressure at the right positions of cylinder cap
Plate, piston is provided with the right side of the raised pressing plate, the outside of the piston is provided with the first y-type seal ring, the first Y types
Wear ring is provided with the right side of sealing ring, the piston is internally provided with the second O-ring seal, and the right-hand member of piston is provided with
Piston rod, the outside of the piston rod are provided with check ring, and the outside of the cylinder body is set at the top position of piston rod
Card key cap is equipped with, the right side opening of the card key cap is provided with the second hydraulic fluid port, and the right-hand member of the cylinder body is connected with cylinder bottom, the cylinder bottom
Bushing is internally provided with, the lip-type seal mechanism includes protective case, guide sleeve and oil seal lip, and is oriented to and is set on guarantor
The inside of sheath, it is described to protect the left side for being set on oil seal lip.
Further, the cylinder body with cylinder bottom by being welded and fixed.
Further, the nut is provided with four altogether, and four nuts are uniformly arranged on the side of earrings.
Further, the μ of the surface roughness Ra of the protective case≤0.4.
Further, first y-type seal ring is provided with two altogether, and two the first y-type seal rings are separately positioned on
The both sides of piston.
Compared with prior art, the beneficial effect that the utility model is reached is：This new structure is scientific and reasonable, uses peace
It is complete convenient, there is provided lip seal mechanism, the μ of the and surface roughness Ra of the protective case in lip seal mechanism≤0.4, can make
Oil seal lip has good protection, and lip seal mechanism can greatly improve the sealing effectiveness of this hydraulic cylinder, prevent into water, if
The second O-ring seal has been put, stabilized seal between piston and piston rod can be made, there is provided the first y-type seal ring, can make work
Plug and cylinder holes stabilized seal, can be when raised pressing plate be by back pressure clamping platen, due to pressing plate periphery there is provided raised pressing plate
With bossing, cause seal to tilt, make often to keep certain interval between raised pressing plate periphery back and inboard wall of cylinder block,
Be avoided that quite a lot of fluid gather caused by back pressure, because raised pressing plate diameter is smaller than diameter of cylinder several millimeters, moreover it is possible to prevent
Seal is extruded from the sealing mounting groove of piston.
Brief description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and a part for constitution instruction, with this practicality
New embodiment is used to explain the utility model together, does not form to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the utility model lip-type seal mechanism；
In figure：1st, earrings fixing hole；2nd, earrings；3rd, nut；4th, dust washer；5th, lip-type seal mechanism；51st, protective case；
52nd, guide sleeve；53rd, oil seal lip；6th, the first O-ring seal；7th, the first hydraulic fluid port；8th, cylinder body；9th, raised pressing plate；10th, second is O-shaped
Sealing ring；11st, card key cap；12nd, the second hydraulic fluid port；13rd, piston rod；14th, cylinder bottom；15th, bushing；16th, check ring；17th, wear ring；
18th, the first y-type seal ring；19th, piston；20th, cylinder cap；21st, the second y-type seal ring.
Embodiment
Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellent
Select embodiment to be merely to illustrate and explain the utility model, be not used to limit the utility model.
Embodiment 1
Fig. 1-2 is referred to, the utility model provides a kind of technical scheme：A kind of waterproof hydraulic cylinder, including earrings fixing hole
1st, earrings 2, nut 3, dust washer 4, lip-type seal mechanism 5, protective case 51, guide sleeve 52, oil seal lip 53, first are O-shaped close
Seal 6, the first hydraulic fluid port 7, cylinder body 8, raised pressing plate 9, the second O-ring seal 10, card key cap 11, the second hydraulic fluid port 12, piston rod 13,
Cylinder bottom 14, bushing 15, check ring 16, wear ring 17, the first y-type seal ring 18, piston 19, the sealing of the Y types of cylinder cap 20 and the 2nd
Circle 21, the inside of earrings 2 is installed with earrings fixing hole 1, and the right-hand member of earrings 2 is provided with nut 3, the inside left of cylinder body 8
Dust washer 4 is provided with, and the top of dust washer 4 is provided with lip-type seal mechanism 5, the right side of dust washer 4 is provided with
One O-ring seal 6, the outside of cylinder body 8 are provided with the second y-type seal ring 21 close to the lower position of the first O-ring seal 6, and
The inside left of cylinder body 8 is provided with cylinder cap 20, and the outside of cylinder body 8 is provided with the first hydraulic fluid port 7, and cylinder above the right side of cylinder cap 20
The inside of body 8 is provided with raised pressing plate 9 at the right positions of cylinder cap 20, and the right side of raised pressing plate 9 is provided with piston 19, piston
19 outside is provided with the first y-type seal ring 18, and the right side of the first y-type seal ring 18 is provided with wear ring 17, piston 19 it is interior
Portion is provided with the second O-ring seal 10, and the right-hand member of piston 19 is provided with piston rod 13, and the outside of piston rod 13 is provided with spring
Back-up ring 16, the outside of cylinder body 8 are provided with card key cap 11 at the top position of piston rod 13, and the right side opening of card key cap 11 is provided with
Second hydraulic fluid port 12, the right-hand member of cylinder body 8 are connected with cylinder bottom 14, and cylinder bottom 14 is internally provided with bushing 15, and lip-type seal mechanism 5 includes
There are protective case 51, guide sleeve 52 and oil seal lip 53, and guide sleeve 52 is arranged on the inside of protective case 51, protective case 51 is arranged on
The left side of oil seal lip 53.
In order that the Stability Analysis of Structures of this hydraulic cylinder, in the present embodiment, it is preferred that cylinder body 8 is with cylinder bottom 14 by being welded and fixed.
In order that the Stability Analysis of Structures of this hydraulic cylinder, in the present embodiment, it is preferred that nut 3 is provided with four, and four spiral shells altogether
Mother 3 is uniformly arranged on the side of earrings 2.
In order that the sealing effectiveness of this hydraulic cylinder is more preferably, in the present embodiment, it is preferred that the surface roughness Ra of protective case 51
≤0.4μ。
In order that the sealing effectiveness of this hydraulic cylinder is more preferably, in the present embodiment, it is preferred that the first y-type seal ring 18 is set altogether
There are two, and two the first y-type seal rings 18 are separately positioned on the both sides of piston 19.
Operation principle：After a kind of waterproof hydraulic cylinder installs, there is provided lip seal mechanism 5, and lip seal machine
The μ of the surface roughness Ra of protective case 51 on structure≤0.4, can make oil seal lip 53 have good protection, lip seal machine
Structure 5 can greatly improve the sealing effectiveness of this hydraulic cylinder, prevent into water, there is provided the second O-ring seal 10, can make piston 19
The stabilized seal between piston rod 13, there is provided the first y-type seal ring 18, can make piston 19 and cylinder holes stabilized seal, sets
Raised pressing plate 9, can when raised pressing plate 9 is by back pressure clamping platen, because the raised periphery of pressing plate 9 has bossing,
Cause seal to tilt, make often to keep certain interval between the raised periphery back of pressing plate 9 and the inwall of cylinder body 8, be avoided that quite
More fluid gather caused by back pressure, because the raised diameter of pressing plate 9 is smaller several millimeters than the diameter of cylinder body 8, moreover it is possible to prevent seal from
Extruded in the sealing mounting groove of piston.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristic
Carry out equivalent substitution.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc.,
It should be included within the scope of protection of the utility model.
Claims (5)
1. a kind of waterproof hydraulic cylinder, including earrings fixing hole (1), earrings (2), nut (3), dust washer (4), lip-type seal machine
Structure (5), protective case (51), guide sleeve (52), oil seal lip (53), the first O-ring seal (6), the first hydraulic fluid port (7), cylinder body
(8), raised pressing plate (9), the second O-ring seal (10), card key cap (11), the second hydraulic fluid port (12), piston rod (13), cylinder bottom
(14), bushing (15), check ring (16), wear ring (17), the first y-type seal ring (18), piston (19), cylinder cap (20) and
Two y-type seal rings (21), it is characterised in that：The inside of the earrings (2) is installed with earrings fixing hole (1), and earrings (2)
Right-hand member is provided with nut (3), and the inside left of the cylinder body (8) is provided with dust washer (4), and the top of dust washer (4)
Lip-type seal mechanism (5) is provided with, the first O-ring seal (6), the cylinder body (8) are provided with the right side of the dust washer (4)
The outside lower position close to the first O-ring seal (6) is provided with the second y-type seal ring (21), and the inside of cylinder body (8) is left
Side is provided with cylinder cap (20), and the cylinder body (8) is outside to be provided with the first hydraulic fluid port (7), and cylinder above the right side of cylinder cap (20)
Body (8) is internal to be provided with raised pressing plate (9) at the right positions of cylinder cap (20), and the right side of the raised pressing plate (9) is set
There is piston (19), the outside of the piston (19) is provided with the first y-type seal ring (18), first y-type seal ring (18)
Right side is provided with wear ring (17), and the piston (19) is internally provided with the second O-ring seal (10), and the right side of piston (19)
End is provided with piston rod (13), and the outside of the piston rod (13) is provided with check ring (16), and the outside of the cylinder body (8) is leaned on
Card key cap (11) is provided with the top position of nearly piston rod (13), the right side opening of the card key cap (11) is provided with the second hydraulic fluid port
(12), the right-hand member of the cylinder body (8) is connected with cylinder bottom (14), and the cylinder bottom (14) is internally provided with bushing (15), the lip
Type sealing mechanism (5) includes protective case (51), guide sleeve (52) and oil seal lip (53), and guide sleeve (52) is arranged on protection
The inside of (51) is covered, the protective case (51) is arranged on the left side of oil seal lip (53).
A kind of 2. waterproof hydraulic cylinder according to claim 1, it is characterised in that：The cylinder body (8) passes through with cylinder bottom (14)
It is welded and fixed.
A kind of 3. waterproof hydraulic cylinder according to claim 1, it is characterised in that：The nut (3) is provided with four altogether, and
Four nuts (3) are uniformly arranged on the side of earrings (2).
A kind of 4. waterproof hydraulic cylinder according to claim 1, it is characterised in that：The surface roughness of the protective case (51)
Ra≤0.4μ。
A kind of 5. waterproof hydraulic cylinder according to claim 1, it is characterised in that：First y-type seal ring (18) sets altogether
Two are equipped with, and two the first y-type seal rings (18) are separately positioned on the both sides of piston (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720446844.8U CN206943116U (en) | 2017-04-26 | 2017-04-26 | A kind of waterproof hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720446844.8U CN206943116U (en) | 2017-04-26 | 2017-04-26 | A kind of waterproof hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206943116U true CN206943116U (en) | 2018-01-30 |
Family
ID=61358867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720446844.8U Expired - Fee Related CN206943116U (en) | 2017-04-26 | 2017-04-26 | A kind of waterproof hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206943116U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307211A (en) * | 2019-07-09 | 2019-10-08 | 南通翔骜液压润滑设备有限公司 | The hydraulic cylinder for having waterproof |
| CN110748530A (en) * | 2019-11-29 | 2020-02-04 | 东莞市金钊宇机械科技有限公司 | Balance oil cylinder |
-
2017
- 2017-04-26 CN CN201720446844.8U patent/CN206943116U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307211A (en) * | 2019-07-09 | 2019-10-08 | 南通翔骜液压润滑设备有限公司 | The hydraulic cylinder for having waterproof |
| CN110748530A (en) * | 2019-11-29 | 2020-02-04 | 东莞市金钊宇机械科技有限公司 | Balance oil 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180130 Termination date: 20210426 |