CN104776082B - A kind of hydraulic cylinder guide sleeve oil port structure - Google Patents
A kind of hydraulic cylinder guide sleeve oil port structure Download PDFInfo
- Publication number
- CN104776082B CN104776082B CN201410656465.2A CN201410656465A CN104776082B CN 104776082 B CN104776082 B CN 104776082B CN 201410656465 A CN201410656465 A CN 201410656465A CN 104776082 B CN104776082 B CN 104776082B
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- CN
- China
- Prior art keywords
- oil duct
- fairlead
- hydraulic cylinder
- groove
- radial direction
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Classifications
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- 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
Abstract
A kind of hydraulic cylinder guide sleeve oil port structure, including being loaded on Barrel of Hydraulic Cylinders one end, the fairlead on hydraulic cylinder piston rod outer circle wall；Described fairlead is provided with the radial ringed groove being connected for the radial direction upper end oil duct connecting with external hydraulic system, two or more axial direction oil duct with upper end oil duct, radial direction upper end oil duct is connected with each axial oil duct through radial ringed groove and forms pressure oil liquid passage, fairlead right side is provided with the right side groove corresponding with hydraulic cylinder piston, and right side groove is connected with each axial oil duct；Described fairlead inwall has one for installing journal bearing mounting groove, the annular groove for installing back-up ring to prevent composite bearing from falling down of composite bearing support guide set.Compared with prior art, the present invention has structure simply, product easy processing, the feature of production low cost.
Description
Technical field
The present invention is a kind of hydraulic cylinder guide sleeve oil port structure.
Background technology
At present, known hydraulic cylinder guide sleeve oil port structure is to open oilhole in fairlead end face, this structural requirement fairlead
Cylindrical larger with endoporus Wall-Thickness Difference, can be directly in the processing of fairlead end face and hydraulic fluid port diameter identical oilhole, if fairlead
End face oilhole diameter is less than hydraulic fluid port diameter, and flow can diminish, and cylinder movement slows；If fairlead end face oilhole with diameter greater than
Hydraulic fluid port diameter, flow can become big, and cylinder movement speed accelerates, all inconsistent with design requirement flow；Or fairlead is cylindrical and interior
Hole Wall-Thickness Difference is less it is impossible to when the processing of fairlead end face is with hydraulic fluid port diameter identical oilhole, foundry goods material selected by fairlead
Matter, is directed to set end face mounting hole and casts, mounting hole sectional area is identical with fairlead hydraulic fluid port sectional area, and this structure is fitted in casting
Close batch production, be not suitable for for piece-production cost is higher.
Content of the invention
It is an object of the invention to overcoming the shortcomings of above-mentioned hydraulic cylinder guide sleeve oil port structure, provide a kind of hydraulic cylinder guiding
Set oil port structure, for guiding sleeve wall thickness is less, fairlead outer circle wall oils hole site placed in the middle it is impossible in oilhole near guiding
Cover sealing member side fittable slackening device, directly can not process the one kind with hydraulic fluid port diameter identical oilhole in fairlead end face
Structure, it is constant that this structure not only enables fluid flow, and can reduce production cost when loose mail produces.
The technical scheme is that：Including being loaded on Barrel of Hydraulic Cylinders one end, leading on hydraulic cylinder piston rod outer circle wall
To set；Described fairlead is provided with and is connected with upper end oil duct for the radial direction upper end oil duct being connected with external hydraulic system
Radial ringed groove, two or more axial direction oil duct, radial direction upper end oil duct is connected with each axial oil duct shape through radial ringed groove
Become pressure oil liquid passage, fairlead right side is provided with the right side groove corresponding with hydraulic cylinder piston, right side groove with
Each axial oil duct is connected；Described fairlead inwall has one and installs for installing the journal bearing of composite bearing support guide set
Groove, for installing back-up ring to prevent the annular groove that composite bearing falls down.
Described radial ringed groove is located at fairlead inwall, and axial oil duct is located at fairlead right side groove inner face.
Described fairlead is that step is cylindric, including the big stage portion positioned at middle part, is connected to big stage portion two
The left small stair portion at end and right small stair portion；Radial direction upper end oil duct is had on the big stage portion of described fairlead；Axial oil duct is equal
Cloth is on the circumference with fairlead axle center as concentric circular, or is symmetrically distributed on the circumference with fairlead axle center as concentric circular.
Described radial direction upper end oil duct bottom is connected with radial ringed groove one end, the other end of radial ringed groove with each
Axial oil duct is connected.
Described axial oil duct sectional area sum is equal to upper end oil duct sectional area.
The size that described radial direction upper end oil duct and radial ringed groove are crossed to form passway is equal to upper end oil duct road junction
Size.
The minimum wall thickness (MINI W.) L2 in the right small stair portion of described fairlead is less than upper end oil duct diameter of phi c.
Described fairlead right side groove depth L=1-2mm, right side groove diameter is Φ a, and each axial oil duct is distributed in directly
Footpath is on the circumference of L1, axial oil duct a diameter of Φ b, Φ a >=L1+ Φ b.
Described fairlead has the axially extending bore for being set with hydraulic cylinder piston rod, the centrage of radial direction upper end oil duct and axial direction
The centrage of through hole is mutually perpendicular to, and the centrage of axial oil duct is parallel to each other with the centrage of axially extending bore.
The present invention solve hydraulic cylinder guide sleeve wall thickness in prior art less it is impossible to directly the processing of fairlead end face with
Hydraulic fluid port diameter identical oilhole；Fairlead outer circle wall oils hole site between two parties it is impossible to seal near fairlead in oilhole
The problem of part side fittable slackening device.Compared with prior art, the present invention has structure simply, product easy processing, production
The feature of low cost, the hydraulic cylinder works filling this fairlead are stable.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the A of the present invention to structural representation.
Fig. 3 is use state schematic diagram of the present invention.（Fairlead right side and piston left side fit-state）
Fig. 4 is use state schematic diagram of the present invention.（Pressure oil liquid promotes piston movement, and fairlead right side is left with piston
End face separated position）
In figure, 1, fairlead, 2, cylinder barrel, 3, piston rod, 4, piston, 5, back-up ring, 6, composite bearing, 7, nut, 1-1, footpath
To bearing mounting groove, 1-2, radial direction upper end oil duct, 1-3, axial oil duct, 1-4, radial ringed groove, 1-5, annular groove, 1-6,
Section, 1-7, right side groove, 1-8, outer circle wall, 1-9, through hole.
Specific embodiment
Fig. 1, in 2, fairlead 1 is step, including the big stage portion positioned at middle part, is connected to big stage portion two ends
Left small stair portion and right small stair portion.The right small stair portion of fairlead 1 uniform two or more axial direction oil duct 1-3, fairlead 1 right-hand member
Fitted with piston 4 left side in face, fairlead 1 is provided with right side groove 1-7；Fairlead 1 be provided with for cylinder barrel 2 inner peripheral wall
The outer circle wall 1-8 of interference fits.Fairlead 1 is provided with the radial direction upper end oil duct 1-2 for connecting with external hydraulic system, with
The radial ringed groove 1-4, the axial oil duct 1-3 connecting with radial ringed groove 1-4 of radial direction upper end oil duct 1-2 connection.Radially
Upper end oil duct 1-2 and radial ringed groove 1-4 Formation cross-section（Passway section）1-6.Fairlead 1 is provided with compound for installing
The journal bearing mounting groove 1-1 of bearing 6 support guide set 1, prevents the annular that composite bearing 6 falls down recessed for install back-up ring 5
Groove 1-5.Fairlead 1 is provided with the through hole 1-9 of the cylindrical gap cooperation with piston rod 3.Pressure oil liquid passes through fairlead 1 radial direction upper end
Oil duct 1-2, radial ringed groove 1-4, axial oil duct 1-3, right side groove 1-7 promote piston 4 to move.Fairlead 1 right side
Fit with piston 4 left side, the cylindrical cooperation with fairlead 1 journal bearing mounting groove 1-1 gap of composite bearing 6, back-up ring 5 cylindrical with
Fairlead annular groove 1-5 coordinates.External pressure fluid pass through fairlead 1 radial direction upper end oil duct 1-2, radial ringed groove 1-4,
Axial oil duct 1-3, right side groove 1-7 flow out；Fairlead 1 journal bearing mounting groove 1-1 is used for installing composite bearing 6, annular
Groove 1-5 is used for installing back-up ring 5, prevents composite bearing 6 from falling down.Fairlead 1 outer circle wall 1-8 bottom portion of groove is pacified with journal bearing
Tankage 1-1 Wall-Thickness Difference is less than radial direction upper end oil duct diameter, i.e. L2<Φc.Fairlead 1 right side groove 1-7 depth L=1-2mm, right-hand member
Face groove 1-7 with diameter greater than the place circle diameter being distributed equal to each axial oil duct 1-3 and axial oil duct 1-3 diameter sum, that is,
Φa≥L1+Φb.Each axial oil duct 1-3 total sectional area n*3.14*b*b*/4 are equal to radial direction upper end oil duct 1-2 sectional area 3.14*
c*c/4.Fairlead section 1-6 sectional area is equal to radial direction upper end oil duct 1-2 sectional area.
In Fig. 3, fairlead 1 be located at cylinder barrel 2 left end, piston rod 3 cylindrical on, fairlead 1 and cylinder barrel 2 are bolted solid
Fixed, fairlead 1 through hole 1-9 be loaded on piston rod 3 cylindrical on, piston 4 is loaded on piston rod 3 right-hand member multidiameter 3-1, is twisted with nut 7
Fasten.Piston 4 is loaded on piston rod 3 right-hand member multidiameter 3-1.
In Fig. 4, external pressure fluid passes through fairlead 1 radial direction upper end oil duct 1-2, radial ringed groove 1-4, axial oil duct
1-3, right side groove 1-7 promote piston 4 to move, and piston 4 left side is separated with fairlead 1 right side.
Claims (8)
1. a kind of hydraulic cylinder guide sleeve oil port structure it is characterised in that；Including being loaded on Barrel of Hydraulic Cylinders（2）One end, hydraulic cylinder are lived
Stopper rod（3）Fairlead on outer circle wall（1）；Described fairlead（1）It is provided with the radial direction for connecting with external hydraulic system
Upper end oil duct（1-2）, the radial ringed groove that is connected with radial direction upper end oil duct（1-4）, two or more axial direction oil duct（1-3）,
Radial direction upper end oil duct（1-2）Through radial ringed groove（1-4）With each axial oil duct（1-3）Be connected formation pressure oil liquid passage,
Fairlead right side is provided with and hydraulic cylinder piston（4）Corresponding right side groove（1-7）, right side groove（1-7）With each
Axial oil duct（1-3）It is connected；Described axial oil duct sectional area sum is equal to upper end oil duct sectional area；
Described fairlead inwall has one and is used for installing composite bearing（6）Support guide set（1）Journal bearing mounting groove（1-
1）, be used for back-up ring is installed（5）To prevent composite bearing（6）The annular groove falling down（1-5）.
2. hydraulic cylinder guide sleeve oil port structure according to claim 1 it is characterised in that：Described radial ringed groove（1-
4）Positioned at fairlead inwall, axial oil duct（1-3）Positioned at fairlead right side groove（1-7）Inner face.
3. hydraulic cylinder guide sleeve oil port structure according to claim 1 it is characterised in that：Described fairlead（1）For step
Shape, the left small stair portion including the big stage portion positioned at middle part, being connected to big stage portion two ends and right small stair portion；Described
Radial direction upper end oil duct is had on the big stage portion of fairlead（1-2）；Axial oil duct（1-3）It is concentric for being distributed on fairlead axle center
On the circumference of circle, or it is symmetrically distributed on the circumference with fairlead axle center as concentric circular.
4. hydraulic cylinder guide sleeve oil port structure according to claim 1 it is characterised in that：Described radial direction upper end oil duct（1-
2）Bottom and radial ringed groove（1-4）One end is connected, radial ringed groove（1-4）The other end and each axial oil duct（1-
3）It is connected.
5. hydraulic cylinder guide sleeve oil port structure according to claim 1 it is characterised in that：Described radial direction upper end oil duct（1-
2）With radial ringed groove（1-4）The size being crossed to form passway is equal to the size at radial direction upper end oil duct road junction.
6. hydraulic cylinder guide sleeve oil port structure according to claim 3 it is characterised in that：The right small stair of described fairlead
The minimum wall thickness (MINI W.) L2 in portion is less than radial direction upper end oil duct diameter of phi c.
7. hydraulic cylinder guide sleeve oil port structure according to claim 1 it is characterised in that：Described fairlead right side groove
Deep L=1-2mm, right side groove diameter is Φ a, and each axial oil duct is distributed on the circumference of a diameter of L1, and axial oil duct is a diameter of
Φ b, Φ a >=L1+ Φ b.
8. hydraulic cylinder guide sleeve oil port structure according to claim 1 it is characterised in that：Described fairlead（1）Have for
Suit hydraulic cylinder piston rod（3）Axially extending bore（1-9）, radial direction upper end oil duct（1-2）Centrage and axially extending bore（1-9）'s
Centrage is mutually perpendicular to, axial oil duct（1-3）Centrage and axially extending bore（1-9）Centrage be parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410656465.2A CN104776082B (en) | 2014-11-18 | 2014-11-18 | A kind of hydraulic cylinder guide sleeve oil port structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410656465.2A CN104776082B (en) | 2014-11-18 | 2014-11-18 | A kind of hydraulic cylinder guide sleeve oil port structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104776082A CN104776082A (en) | 2015-07-15 |
| CN104776082B true CN104776082B (en) | 2017-03-08 |
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ID=53617758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410656465.2A Active CN104776082B (en) | 2014-11-18 | 2014-11-18 | A kind of hydraulic cylinder guide sleeve oil port structure |
Country Status (1)
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| CN (1) | CN104776082B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001200810A (en) * | 2000-01-17 | 2001-07-27 | Kayaba Ind Co Ltd | Hydraulic cylinder |
| CN201232677Y (en) * | 2008-09-26 | 2009-05-06 | 山东隆源液压科技有限公司 | Small arm oil cylinder for digging machine |
| DE102011009365A1 (en) * | 2011-01-25 | 2012-07-26 | Still Gmbh | Pressure cylinder for use as lifting cylinder of lifting mechanism for load bearing device of industrial truck, has piston ring comprising two semi-circular half-casings that are mounted into receiving groove, without using tools |
| CN102410277A (en) * | 2011-11-29 | 2012-04-11 | 徐州宇家医药科技有限公司 | Miniature cylinder |
| CN102943784B (en) * | 2012-11-19 | 2015-06-10 | 湖南特力液压有限公司 | Cylinder barrel, hydraulic cylinder and pumping equipment comprising hydraulic cylinder |
| CN203453183U (en) * | 2013-07-19 | 2014-02-26 | 徐州徐工液压件有限公司 | Hydraulic cylinder guide sleeve oil way buffer groove structure |
| CN204239380U (en) * | 2014-11-18 | 2015-04-01 | 湖北江山液压科技有限公司 | A kind of hydraulic cylinder guide sleeve oil port structure |
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2014
- 2014-11-18 CN CN201410656465.2A patent/CN104776082B/en active Active
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| Publication number | Publication date |
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| CN104776082A (en) | 2015-07-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20171225 Address after: 441004 Lianhua Road, Nissan Industrial Park, Xiangyang hi tech Zone, Hubei Province, No. 1 Patentee after: HUBEI JIANGSHAN HEAVY INDUSTRIES CO., LTD. Address before: 441004 Lianhua Road, high tech Industrial Zone, Hubei, Xiangfan, No. 1 Patentee before: Hubei Jiangshan Hydraulic Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 441057 No.5, zhuiri Road, high tech Zone, Xiangyang City, Hubei Province Patentee after: China Ordnance Industry Group Jiangshan Heavy Industry Research Institute Co.,Ltd. Address before: 441004 No.1, Lianhua Road, Nissan Industrial Park, high tech Zone, Xiangyang City, Hubei Province Patentee before: HUBEI JIANGSHAN HEAVY INDUSTRIES Co.,Ltd. |
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| CP03 | Change of name, title or address |