CN109899614A - A kind of high speed rotation hydraulic fitting - Google Patents
A kind of high speed rotation hydraulic fitting Download PDFInfo
- Publication number
- CN109899614A CN109899614A CN201711398898.2A CN201711398898A CN109899614A CN 109899614 A CN109899614 A CN 109899614A CN 201711398898 A CN201711398898 A CN 201711398898A CN 109899614 A CN109899614 A CN 109899614A
- Authority
- CN
- China
- Prior art keywords
- fitting body
- high speed
- speed rotation
- fitting
- distribution casing
- 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
Landscapes
- Joints Allowing Movement (AREA)
Abstract
The present invention discloses a kind of high speed rotation hydraulic fitting, it is made of mandrel oil distribution casing (1), oil inlet (2), drive end bearing bracket (3), attachment screw (4,9), sealing ring (5), fitting body (6), deep groove ball bearing (7), rear end cap (8), pressing plate (10), oil sealing (11), wherein mandrel oil distribution casing (1) is fitted into the inner hole of fitting body (6), is sealed with sealing ring (5)；The rear and front end of fitting body (6) is respectively provided with drive end bearing bracket (3), rear end cap (8), and two end cover screws are connect with fitting body (6)；Oil inlet (2) are set on mandrel oil distribution casing (1).This high speed rotation hydraulic fitting can transmit cooling medium under high pressure, high revolving speed, and have Packed effect.
Description
1, technical field
The present invention relates to hydraulic transmission technology field, specifically a kind of high speed rotation hydraulic fitting.
2, background technique
In the design and application of fluid system, it is frequently encountered the feelings that high-pressure fluid is input to rotary body from static pipeline
Condition.When moving component and fixation member need opposite continuous rotary, hydraulic hose and electric wire are not available then.In order to solve this
A problem, we use rotary-type fluid conveying connector and hydrostatic slip ring in practice.Hydrostatic slip ring be mainly used in ultrahigh speed,
Under the operating condition of high pressure.Its structure is complicated, it is more expensive to make processing difficulties, price, and studies discovery in use, and static pressure is sliding
Bearing capacity, the pressure of ring are distributed and the oil film rigidity of sealing off gap has much relations, viscosity change in Varying Oil Viscosity
Causing lubrication actual effect, bearing capacity to reduce, accident occurred is more and more, its use scope of these factors is by certain limit
System.
In many special purpose machine tools and machining center, machine tool machine, work station, deep hole rig, the machinery such as glass machinery are set
It is standby that high speed rotation head is above widely used, to achieve the effect that transmission cooling medium and sealing under high pressure, high revolving speed.
Currently, the domestic application to rotary joint still falls within the starting stage.Falling behind relatively plus domestic manufacturing technology simultaneously, rotation connects
There is also some difficult points not yet broken through for the research and development of head, are mainly manifested in sealing material and are not able to satisfy high speed, high temperature and high pressure
Operating condition, serious wear, service life are short etc..
3, summary of the invention
The purpose of the present invention is to provide a kind of high speed rotation hydraulic fittings, by mandrel oil distribution casing 1, oil inlet 2, front end
Lid 3, attachment screw (4,9), sealing ring 5, fitting body 6, deep groove ball bearing 7, rear end cap 8, pressing plate 10, oil sealing 11 form, wherein
Mandrel oil distribution casing 1 is fitted into the inner hole of fitting body 6, is sealed with sealing ring 5；The rear and front end of fitting body 6 is respectively provided with front end
Lid 3, rear end cap 8, two end cover screws are connect with fitting body 6；Oil inlet 2 is set on mandrel oil distribution casing 1.Axis oil distribution casing 1 with
There are gaps between fitting body 6, are non-contact seals, can avoid direct friction between solid, therefore have and be suitable for running at high speed, nothing
It is mechanical wear, long service life, reliable, connection parts are used as using deep-groove ball ball bearing 7, make structure it is more compact, it is simple,
Occupied space is few, part is few, quick detachable maintenance.
The working principle of the invention is:
When high-speed joint works, mandrel oil distribution casing 1 is connected on rotating machinery and therewith together by ring flange
Rotation, fitting body 6 remain stationary.The medium that need to be transmitted is entered by oil inlet 2 to be flowed into rotating machinery.Using deep-groove ball
Bearing 7 is used as connecting component, since bearing clearance is less than the gap between mandrel and fitting body, ensures mandrel to a certain extent
Whenever all there is gap in oil distribution casing and fitting body, keep the structure of rotary joint more reasonable.It is now common with using
Rotary joint structure is compared, and the hydrostatic bearing of connector front end is increased so that have between mandrel and fitting body one it is stable between
Gap is flooded with lubricating oil between fitting body 6 and mandrel oil distribution casing 1, reduces friction between the two, improves rotary joint
Service life.
4, Detailed description of the invention
Attached drawing is a kind of high speed rotation hydraulic fitting structure principle chart.
5, specific embodiment
Embodiment:
For Multi-channel rotating joint, being mutually mixed and outwardly leaking for interchannel transmission medium how is prevented
As one of the key technology factor for restricting raising product specification.The effect of sealing ring 5 is to prevent oil seepage, and prevent ash
The intrusion of dirt and other impurities, and prevent ganging up between fluid in each hydraulic oil channel from mutually mixing.If sealing surface is relatively sliding
Dynamic speed is higher, or works in the high temperature environment, is difficult to keep ideal lubricating condition, or because friction increases, frictional heat is increased
And out of hand cause seal failure.Non-contact seals are to reach sealing by generating pressure drop in the fluid sealed
Purpose, and allow to generate the smallest leakage rate by certain gap, without the rotary motion of movement parts in influence system, this is just
It is required that the necessary very little in the gap of non-contact seals, can just be such that leakage is maintained within the limit of permission only so.For this purpose, just answering
Design and the accuracy of manufacture to machine propose corresponding require.
Root is used under the operating condition of rotary sealing according to the relevant information working as sealing ring, compression ratio ability between 5%-9%
It can achieve the effect that satisfied.It compensates, compresses in view of O-ring will provide sealing force and wear to it for the slip ring of Glais ring
Rate can constantly reduce, so prefetching its compression ratio 9% is to be calculated.
High-speed joint material must have the characteristics that high rigidity, high resiliency, corrosion-resistant, high thermal conductivity.Mandrel is matched
Food tray 1 uses steel, has good comprehensive mechanical property can be through loaded after carbo-nitriding and high-frequency quenching after modulated
Larger and require wear-resisting and not by the part of great impact, its Young's modulus needs to reach E=210 × 109Pa.
Claims (3)
1. a kind of high speed rotation hydraulic fitting, by mandrel oil distribution casing (1), oil inlet (2), drive end bearing bracket (3), attachment screw (4,
9), sealing ring (5), fitting body (6), deep groove ball bearing (7), rear end cap (8), pressing plate (10), oil sealing (11) form, wherein mandrel
Oil distribution casing (1) is fitted into the inner hole of fitting body (6), is sealed with sealing ring (5).
2. a kind of high speed rotation hydraulic fitting according to claim 1, it is characterised in that the rear and front end of fitting body (6)
It is respectively provided with drive end bearing bracket (3), rear end cap (8), two end cover screws are connect with fitting body (6).
3. a kind of high speed rotation hydraulic fitting according to claim 1, it is characterised in that mandrel oil distribution casing is arranged on (1)
Oil inlet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711398898.2A CN109899614A (en) | 2017-12-11 | 2017-12-11 | A kind of high speed rotation hydraulic fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711398898.2A CN109899614A (en) | 2017-12-11 | 2017-12-11 | A kind of high speed rotation hydraulic fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109899614A true CN109899614A (en) | 2019-06-18 |
Family
ID=66943020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711398898.2A Pending CN109899614A (en) | 2017-12-11 | 2017-12-11 | A kind of high speed rotation hydraulic fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109899614A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336253A (en) * | 2020-03-12 | 2020-06-26 | 中航飞机起落架有限责任公司 | Movable hinged sealing structure for aircraft landing gear |
-
2017
- 2017-12-11 CN CN201711398898.2A patent/CN109899614A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336253A (en) * | 2020-03-12 | 2020-06-26 | 中航飞机起落架有限责任公司 | Movable hinged sealing structure for aircraft landing gear |
| CN111336253B (en) * | 2020-03-12 | 2022-04-12 | 中航飞机起落架有限责任公司 | Movable hinged sealing structure for aircraft landing gear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2519615C (en) | Rotary union for directing a heat exchange fluid | |
| CA2547152C (en) | Multi-media rotating union | |
| CN207893297U (en) | A kind of coke-oven plant's flaker rotary joint | |
| CN101169205A (en) | High pressure high speed rotation joint | |
| CN101718380A (en) | New type rotation joint having flexible float ring sealing structure | |
| CN101806362A (en) | Mechanical sealing device of middle rotating ring | |
| CN112412347A (en) | High-pressure manifold rotating nipple | |
| CN201748076U (en) | Novel rotary connector for sealing pneumatically pressed end face | |
| CN109899614A (en) | A kind of high speed rotation hydraulic fitting | |
| CN101457841B (en) | Mechanical seal device for rubber bellows | |
| GB2106196A (en) | Seals | |
| CN203099164U (en) | High-rotating-speed rotary joint | |
| CN201575250U (en) | Novel swivel joint provided with soft floating ring sealing structure | |
| CN202251058U (en) | Oil film double mechanical sealing device for compressors | |
| CN101865343A (en) | Novel pneumatic compacted end-face-seal rotary joint | |
| CN202065468U (en) | Corrugated slot sealing ring structure | |
| CN101709817A (en) | Novel spring compression type end-face-seal rotary joint | |
| CN212564389U (en) | Mechanical sealing element | |
| CN201575249U (en) | Novel revolving joint for sealing spring compressing type end surface | |
| CN209180104U (en) | A kind of generator gland seal device | |
| CN104132142A (en) | Trapezoidal slip-ring-type combination sealing ring | |
| CN201417988Y (en) | Motor shaft end seal of direct-connected planetary cone disc type stepless speed changer | |
| CN1114018A (en) | Static balance combined high pressure rotary shaft oil seal | |
| CN201992078U (en) | Rotating seal structure | |
| CN103752615B (en) | Oil-gas lubrication connecting device of twenty-high rolling mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190618 |
|
| WD01 | Invention patent application deemed withdrawn after publication |