CN206449109U - High-speed fuel oil gear pump floating bearing - Google Patents
High-speed fuel oil gear pump floating bearing Download PDFInfo
- Publication number
- CN206449109U CN206449109U CN201720041040.XU CN201720041040U CN206449109U CN 206449109 U CN206449109 U CN 206449109U CN 201720041040 U CN201720041040 U CN 201720041040U CN 206449109 U CN206449109 U CN 206449109U
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- China
- Prior art keywords
- gear pump
- floating bearing
- fuel oil
- magnetic patch
- speed fuel
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model belongs to gear pump technical field, is related to a kind of high-speed fuel oil gear pump floating bearing.The high-speed fuel oil gear pump floating bearing includes bearing body, the thrust surface one coordinated with gear face is provided with bearing body, the step surface parallel with thrust surface one is additionally provided with bearing body, step surface is provided with multiple magnetic patch, mounting surface is additionally provided with bearing body, mounting surface is a part for bearing body outer peripheral face, and vertical with thrust surface one.The utility model can make floating bearing axially loaded uniform, can be compensated automatically after abrasion, can effectively reduce the leakage of gear pump, improve the volumetric efficiency of gear pump, extend the service life of floating bearing.
Description
Technical field
The utility model belongs to gear pump technical field, is related to a kind of high-speed fuel oil gear pump floating bearing.
Background technology
Gear pump belongs to the dynamical element of hydraulic system, is widely used in machine industry, aviation field, shipbuilding industry, various
It is the key element of hydraulic system in engineering machinery and agricultural machinery.High-speed fuel oil gear pump is because rotating speed is high, fuel-viscosity variation
Small, the leakage of gear face axial gap is larger, causes the volumetric efficiency of high-speed fuel oil gear pump relatively low, therefore, between reduction end face
The leakage of gap, conclusive effect is played to improving volumetric efficiency.Floating bearing is the key components and parts in gear pump, can be right
Axial gap is compensated automatically, it is ensured that axial gap substantially constant.The general bullet by counterbalance spring of existing floating bearing
Power makes the mode that floating bearing is close to gear face to reduce the leakage of end clearance, long to the elastic force and spring of counterbalance spring
Degree requires very high, and elastic force is uneven to make floating bearing occur eccentric wear with gear face, increase gear face liquid leakage, from
And influence the performance of gear pump and the service life of floating bearing.
Current Aero-Space propose higher requirement, it is necessary to more reliable to the performance of gear pump, life-span and reliability
End face compensation way the axial gap of gear pump is compensated.
Utility model content
In order to solve problems of the prior art, the utility model proposes a kind of gear face uniform force, abrasion
After can compensate automatically, be effectively reduced gear face axial gap leakage floating bearing.
Technical solution of the present utility model is：The high-speed fuel oil gear pump floating bearing provided includes bearing sheet
Body, is provided with the thrust surface one coordinated with gear face on bearing body, it is characterised in that：It is additionally provided with bearing body with stopping
The parallel step surface of pushing surface one, step surface is provided with multiple magnetic patch；Mounting surface is additionally provided with bearing body, mounting surface is bearing sheet
A part for external side face, and it is vertical with thrust surface one.
Magnetic patch on step surface is engaged with the magnetic patch on gear pump case, and produces repulsion each other, and the repulsion can make
The thrust surface one of floating bearing all the time with gear face automatic paste tightening, reduce gear face liquid leakage.Floating bearing makes in pairs
With two mounting surfaces, which coordinate, during installation prevents floating bearing from rotating.
It is preferred that：Mounting surface is provided with pin hole, is positioned when floating bearing can be made to use in pairs.
Further improving is：In the region corresponding with higher-pressure region circumferentially, distribution is β to the magnetic patch,
180°≤β≤240°.When being not provided with magnetic patch, the power that the thrust surface one of floating bearing is subject to is unequal, point high pressure and low pressure
Area, therefore, it can set magnetic patch in higher-pressure region, i.e.,：Magnetic patch step surface distribution circumferentially be β, 180 °≤β≤
240 °, make that magnetic force and high nip pressures are formed make a concerted effort and low-pressure area pressure is equal, so as to ensure the thrust surface one of floating bearing
It is under pressure uniform, had so both can guarantee that thrust surface one is close to gear face, can prevent eccentric wear again.
It is preferred that：The magnetic patch section is sector.
Compared with prior art, the utility model has the advantages that：Magnetic patch is provided with floating bearing, and in gear pump case
Magnetic patch on intracoelomic cavity produces repulsion, makes floating bearing end face and gear face automatic paste tightening, after floating bearing end wear
It will automatically compensate, and to ensure axial gap substantially constant, reduce the leakage of gear pump axial gap；The uniform magnetic patch in higher-pressure region can
To ensure that the pressure that floating bearing end face is subject to is uniform, eccentric wear is prevented.
Brief description of the drawings
Fig. 1 is the utility model structure chart；
Fig. 2 is the utility model top view；
Fig. 3 is the utility model left view；
Fig. 4 is installation diagram of the utility model on gear pump.
Wherein：1- bearing bodies；2- step surfaces；3- mounting surfaces；4- pin holes；5- magnetic patch；6- thrust surfaces two；7- thrust surfaces
One；8- gear pump cases；9- floating bearings；10- pins；11- gears.
α --- the angle between adjacent two magnetic patch center line；
β --- magnetic patch step surface distribution circumferentially；
H --- magnetic patch thickness.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, Fig. 2 and Fig. 3, this high-speed fuel oil gear pump includes bearing body 1 with floating bearing, and it is by two differences
The big end part of diameter and small end are grouped into, wherein big end part is step surface 2, big end with the end face that small end split-phase is handed over
The other end divided is thrust surface 1, and the end face of small end part is thrust surface 26；There is a plane area periphery of big end part, should
Plane area is used as mounting surface 3 and, positioning during for floating bearing 9 mounted in pairs vertical with thrust surface 1.
Referring to Fig. 4, two high-speed fuel oil gear pump floating bearings 9 are used in pairs, make 3 pairs of mounting surface by pin 10
Together, the smaller one end of bearing body external diameter is placed in gear pump case, and thrust surface 26 is contacted with the internal chamber wall of gear pump case 8, tooth
Axle journal is stretched into inside bearing body 1, thrust surface 1 and the end contact of gear 11.Between gear shaft neck and floating bearing 9
There is one layer of oil film, operationally, floating bearing 9 is not rotated, be sliding friction between axle journal and floating bearing.
There is a step surface on the internal chamber wall of gear pump case 8, it is relative with the step surface of floating bearing 9, which is provided with magnetic patch,
Repulsion is produced between the magnetic patch on magnetic patch 5 and housing on floating bearing, makes the end face and floating bearing thrust surface 1 of gear 11
Remain and be close to, such as thrust surface 1 is worn and torn, and automatic compensation can be realized under magnetic force moving, axle is thereby may be ensured that
To gap substantially constant, reduce the leakage of gear pump axial gap.
When being not provided with magnetic patch, the power being subject on floating bearing axial direction is unequal, point high pressure and low-pressure area, its mesohigh
Area includes high pressure chest hydraulic region and liquid discharge mouth region, and low-pressure area includes high pressure unloading area and liquid inlet area, therefore, magnetic patch is set
Put in higher-pressure region, i.e.,：Magnetic patch step surface distribution circumferentially be β, 180 °≤β≤240 °, make magnetic force and high pressure
Area's pressure initiation make a concerted effort and low-pressure area power it is equal, so as to ensure that floating bearing end face is under pressure uniformly, both ensure thrust
Gear face is close in face one, and eccentric wear is prevented again.
The present embodiment is Aero-Space gear pump, and it is higher to volume requirement, in order to reduce size, should choose less
Angle α between magnetic patch thickness and distributed quantity, the preferred 1.5mm of magnetic patch thickness H, magnetic patch number 10, adjacent two magnetic patch center line
=24 °.
Claims (5)
1. a kind of high-speed fuel oil gear pump floating bearing, including bearing body, are provided with bearing body and match somebody with somebody with gear face
The thrust surface one of conjunction, it is characterised in that：It is additionally provided with bearing body on the step surface parallel with thrust surface one, the step surface
Provided with multiple magnetic patch, the bearing body is provided with mounting surface, and mounting surface is a part for bearing body outer peripheral face, and and thrust
Face one is vertical.
2. a kind of high-speed fuel oil gear pump floating bearing according to claim 1, it is characterised in that：On the mounting surface
Provided with pin hole.
3. a kind of high-speed fuel oil gear pump floating bearing according to claim 2, it is characterised in that：The magnetic patch with
The corresponding region in higher-pressure region is circumferentially.
4. a kind of high-speed fuel oil gear pump floating bearing according to claim 3, it is characterised in that：Point of the magnetic patch
Cloth scope is β, 180 °≤β≤240 °.
5. a kind of high-speed fuel oil gear pump floating bearing according to claim any one of 1-4, it is characterised in that：It is described
Magnetic patch section is sector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720041040.XU CN206449109U (en) | 2017-01-13 | 2017-01-13 | High-speed fuel oil gear pump floating bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720041040.XU CN206449109U (en) | 2017-01-13 | 2017-01-13 | High-speed fuel oil gear pump floating bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206449109U true CN206449109U (en) | 2017-08-29 |
Family
ID=59671215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720041040.XU Active CN206449109U (en) | 2017-01-13 | 2017-01-13 | High-speed fuel oil gear pump floating bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206449109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704360A (en) * | 2017-01-13 | 2017-05-24 | 西安航天动力研究所 | Floating bearing used for high-speed fuel gear pump |
-
2017
- 2017-01-13 CN CN201720041040.XU patent/CN206449109U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704360A (en) * | 2017-01-13 | 2017-05-24 | 西安航天动力研究所 | Floating bearing used for high-speed fuel gear pump |
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