CN110094423A - A kind of pressure applied to gear pump automatically supplies static-pressure sliding bearing - Google Patents
A kind of pressure applied to gear pump automatically supplies static-pressure sliding bearing Download PDFInfo
- Publication number
- CN110094423A CN110094423A CN201910340368.5A CN201910340368A CN110094423A CN 110094423 A CN110094423 A CN 110094423A CN 201910340368 A CN201910340368 A CN 201910340368A CN 110094423 A CN110094423 A CN 110094423A
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- Prior art keywords
- pressure
- bearing
- static
- fluid
- sliding bearing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/064—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a kind of pressure applied to gear pump to automatically supply static-pressure sliding bearing, when work, power is inputted by driving gear shaft, pass through gear engagement, drive driven gear shaft rotation, squeeze the fluid entered by low-pressure inlet, so that the fluid that fluid enters high pressure chest becomes high-pressure fluid, high-pressure fluid is largely pumped from high-pressure outlet, small part high-pressure fluid enters connectivity slot by the high-pressure oil feed slot on high pressure resonator end surface, if and then entering the dry bearing oil-feed tank of axial high pressure through slot and circumferential direction, high-pressure fluid in bearing oil-feed tank pours in the bearing static pressure chamber of static-pressure sliding bearing inner wall, support driven gear shaft and driving gear shaft, the fluid of outflow bearing static pressure chamber has restored low pressure, low-pressure fluid is flowed out from static-pressure sliding bearing both ends, low pressure chamber is returned to by bearing side drain pan and draining guide channel, And it is squeezed into high pressure chest again, guarantee gear pump continuous service.
Description
Technical field
The invention belongs to Machine Designs and sliding bearing field, and in particular to a kind of pressure applied to gear pump automatically supplies
Static-pressure sliding bearing.
Background technique
Fuel system is the exclusive source of aeroplane engine mechanomotive force, and combustion process is once oil-break occur and will cause seriously
Fruit.Fuel oil is normal and continuous feed is to guarantee the premise of aero-engine stable operation, therefore fuel oil gear pump is engine
One of core component.Aero-engine fuel oil gear pump generallys use centrifugal pump and gear pump two stages of compression at present, wherein tooth
Wheel pump rotor generallys use hydrodynamic sliding bearing support, directly using Aviation Fuel as lubricant medium, produces by dynamic pressure effect
Raw bearing capacity.As aero-engine pushes away ratio, high power development to height, gear pump outlet pressure is increasingly improved, what bearing was born
Radial load also dramatically increases, this proposes rigors to the performance of spring bearing.Since Aviation Fuel viscosity is low, bearing carries
The problems such as lotus is big, only relies on dynamic pressure effect and causes bearing minimum oil film thickness too small (< 5 μm), is also easy to produce abrasion, gluing, in turn
Cause catastrophic effect.Therefore, the reliability for how improving aero-engine fuel oil gear pump rotor supports bearing is aviation hair
One of the key points and difficulties of motivation fuel oil Design of gear pump.
It compares and hydrodynamic bearing, hydrostatic bearing floats rotor using extraneous high-pressure fluid, there is precision height, bearing capacity
The advantages that big is to be best suited for one of sliding supported condition mode of low viscosity fluid.However, traditional hydrostatic bearing needs complexity
And the attachmentes such as expensive extraneous high-pressure oil pump, limit the application of its industrial circle.
Summary of the invention
The purpose of the present invention is to provide a kind of pressure applied to gear pump to automatically supply static-pressure sliding bearing, by leading
The high-pressure fluid of light fluid gear pump provides high pressure oil for static-pressure sliding bearing, and it is dynamic which solves conventional fuel oil gear pump
Press sliding bearing under the conditions of big load, oil film thickness is too small, is also easy to produce the problems such as touching mill, gluing, low reliability.The present invention adopts
Use hydrostatic bearing as the spring bearing of aero-engine fuel oil gear pump rotor, while using itself high pressure fuel as static pressure
The high-voltage power supply of bearing provides a kind of completely new solution for the design of fuel oil gear pump bearing.
The present invention adopts the following technical scheme that realize:
A kind of pressure applied to gear pump automatically supplies static-pressure sliding bearing, the gear pump include cabinet and external toothing and
It is arranged in parallel the intracorporal driving gear shaft of case and driven gear shaft, the both ends of driving gear shaft and driven gear shaft pass through suit
Static-pressure sliding bearing on transmission shaft is flexibly connected with cabinet, and the side of the cabinet offers high-pressure outlet, and the other side opens up
There is low-pressure inlet；Wherein,
The ipsilateral static-pressure sliding bearing installation site of two transmission shafts is symmetrical and symmetrical configuration, the two joint place are plane,
The side of bonding position towards high-pressure outlet offers high pressure chest, offers low pressure chamber, high pressure towards the other side of low-pressure inlet
High-pressure oil feed slot is offered on resonator end surface, so that high-pressure fluid provides branch bulging by high-pressure oil feed slot for static-pressure sliding bearing
Power；If being uniformly provided with dry bearing oil-feed tank in each static-pressure sliding bearing internal circumferential and for being connected to two neighboring bearing
The axial high pressure through slot of oil-feed tank, if the inner wall of each static-pressure sliding bearing offers bearing corresponding with dry bearing oil-feed tank
Static pressure chamber, the bearing static pressure chamber are rectangular cavity, and the ipsilateral static-pressure sliding bearing of two transmission shafts passes through connectivity slot for high pressure respectively
Oil supply tank is connected with the bearing oil-feed tank of two static-pressure sliding bearings, each bearing static pressure chamber and corresponding bearing oil-feed tank phase
Connection；
Each static-pressure sliding bearing inner side end offers bearing side drain pan, and static-pressure sliding bearing end face offers company
Continuous draining guide channel, so that leaking fluid between static-pressure sliding bearing and transmission shaft passes sequentially through bearing side drain pan
Low pressure chamber is returned to draining guide channel.
A further improvement of the present invention lies in that each bearing static pressure chamber is connected with corresponding bearing oil-feed tank by flow controller
It is logical.
A further improvement of the present invention lies in that flow controller is orifice restriction device or capillary restrictor.
A further improvement of the present invention lies in that be uniformly provided in each static-pressure sliding bearing internal circumferential four bearings into
Oil groove.
A further improvement of the present invention lies in that power is inputted by driving gear shaft when work, is engaged and made by gear
With drive driven gear shaft rotation squeezes the fluid entered by low-pressure inlet, so that the fluid that fluid enters high pressure chest becomes height
Fluid is pressed, high-pressure fluid is largely pumped from high-pressure outlet, and small part high-pressure fluid is supplied by the high pressure on high pressure resonator end surface
Oil groove enters connectivity slot, and if then entering axial high pressure through slot and circumferential dry bearing oil-feed tank, the high pressure in bearing oil-feed tank
Fluid pours in the bearing static pressure chamber of static-pressure sliding bearing inner wall, supports driven gear shaft and driving gear shaft, flows out bearing
The fluid of static pressure chamber has restored low pressure, and low-pressure fluid is flowed out from static-pressure sliding bearing both ends, passes through bearing side drain pan and draining
Guide channel returns to low pressure chamber, and is squeezed into high pressure chest again, guarantees gear pump continuous service.
The present invention has following beneficial technical effect:
A kind of pressure applied to gear pump provided by the invention automatically supplies static-pressure sliding bearing, two biographies in the gear pump
The ipsilateral static-pressure sliding bearing installation site of moving axis is symmetrical and symmetrical configuration, the two joint place are plane, and bonding position direction is high
The side for extruding mouth offers high pressure chest, offers low pressure chamber towards the other side of low-pressure inlet, offers on high pressure resonator end surface
High-pressure oil feed slot, so that high-pressure fluid provides support pressure, partial high pressure fluid by high-pressure oil feed slot for static-pressure sliding bearing
Into axial high pressure through slot and the bearing oil-feed tank of circumferential direction, then pour in by bearing oil-feed tank the axis of static-pressure sliding bearing inner wall
Static pressure chamber is held, and then supports driven gear shaft and driving gear shaft, the low-pressure fluid for flowing out bearing static pressure chamber is slided from static pressure
The outflow of bearing both ends, and low pressure chamber is returned to by bearing side drain pan and draining guide channel.Thus, the present invention passes through guiding combustion
The high-pressure fluid of oilgear pump provides high pressure oil for static-pressure sliding bearing, guarantees sliding bearing stable operation.In short, originally
Invention has the advantages that
(1) compared to the hydrodynamic sliding bearing of conventional fuel oil gear pump, the static-pressure sliding bearing in the present invention can be significant
The problems such as improving bearing capacity, guarantee enough oil film thicknesses, can effectively avoid abrasion, gluing, is remarkably improved fuel oil tooth
The reliability of wheel pump.(2) as fuel oil gear pump outlet pressure further increases, although bearing load is higher, static pressure simultaneously
The charge oil pressure of sliding bearing is also bigger, and the bearing capacity of bearing is synchronous to be increased, and achievees the effect that " meeting Qiang Zeqiang ", is remarkably improved
The anti-overload ability of system.(3) compared to the static-pressure sliding bearing applied in standard machinery equipment, the static pressure in the present invention is sliding
The high-pressure fluid that dynamic bearing is had using fuel oil gear pump itself does not need additional oil-servicing facilities, structure is tight as high-voltage power supply
It gathers, high reliablity.
The present invention by traditional hydrodynamic sliding bearing that fuel oil gear pump is used and static-pressure sliding bearing of the invention into
Row emulation, obtains emulated pressure cloud atlas (see Fig. 5) and Lubrication Film Thickness comparison diagram (see Fig. 6), obtained performance comparison data
It see the table below:
By comparing traditional hydrodynamic sliding bearing and the present invention, it can prove that the present invention can be shown under identical operating condition
It writes and increases minimum oil film thickness, reduces maximum oil film pressure, and then reduce temperature rise and reduce power consumption, improve the operation of fuel oil gear pump
Reliability.
Detailed description of the invention
Fig. 1 is fuel oil gear pump radial cross-section.
Fig. 2 is fuel oil gear pump axial sectional view.
Fig. 3 is bearing cross-sectional view, and Fig. 3 (a) is bearing cavity cross-sectional view, and Fig. 3 (b) is bearing radial cross-section.
Fig. 4 is schematic diagram on the inside of bearing, and Fig. 4 (a) is bearing axial sectional view, and Fig. 4 (b) is bearing inner wall face circumferentially deploying
Figure.
Fig. 5 is dynamic pressure and static-pressure sliding bearing pressure-plotting, and Fig. 5 (a) is hydrodynamic sliding bearing operating pressure distribution map,
Fig. 5 (b) is static-pressure sliding bearing operating pressure distribution map.
Fig. 6 is dynamic pressure and static-pressure sliding bearing oil film thickness distribution map, and Fig. 6 (a) is hydrodynamic sliding bearing graphs of Oil Film Thickness,
Fig. 6 (b) is static-pressure sliding bearing graphs of Oil Film Thickness.
Description of symbols:
1 is driving gear shaft, and 2 be driven gear shaft, and 3 be high-pressure outlet, and 4 be low-pressure inlet, and 5 be preceding pedestal, and 6 be rear base
Seat, 7 be attachment screw, and 8 be middle part pedestal, and 9 be sealing ring, and 101 be end bearing before driven shaft, and 102 be end bearing before driving shaft,
103 be driven shaft rear end bearing, and 104 be driving shaft rear end bearing, and 12 be bearing side drain pan, and 13 be high pressure chest, and 14 be draining
Guide channel, 15 be high-pressure oil feed slot, and 16 be low pressure chamber, and 17 be bearing oil-feed tank, and 18 be flow controller, and 19 be connectivity slot, and 20 be axis
To high pressure through slot, 21 be bearing static pressure chamber.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
As depicted in figs. 1 and 2, a kind of pressure applied to gear pump provided by the invention automatically supplies static-pressure sliding bearing,
Including end bearing 101, active before driving gear shaft 1, driven gear shaft 2, preceding pedestal 5, rear pedestal 6, middle part pedestal 8, driven shaft
End bearing 102, driven shaft rear end bearing 103 and driving shaft rear end bearing 104 before axis.
As shown in Figure 1,101 inner wall of end bearing and the preceding end-journal of driven gear shaft 2 are assembled together before driven shaft, it is driven
101 outside of end bearing is assembled with preceding pedestal 5 before axis；The preceding end-journal of 102 inner wall of end bearing and driving gear shaft 1 fills before driving shaft
With together, 102 outside of end bearing is assembled with preceding pedestal 5 before driving shaft, has sealing ring between driving gear shaft 1 and preceding pedestal 5
9；Driving gear shaft 1 is meshed with driven gear shaft 2；Preceding pedestal 5 uses attachment screw 7 with middle part pedestal 8 and rear pedestal 6 in order
It is assembled together.End bearing 101 is symmetrical before driven shaft rear end bearing 103 and driven shaft is assemblied in 2 rear axle of driven gear shaft
Neck；End bearing 102 is symmetrical before driving shaft rear end bearing 104 and driving shaft is assemblied in 1 rear end axle journal of driving gear shaft；Positioned at master
Movable gear shaft 1 and two bearings of 2 front end of driven gear shaft and two bearing arrangements positioned at rear end are symmetrical, subsequent structural explanation
In the past for end bearing.
As shown in Fig. 2, driving gear shaft 1 rotates clockwise, the driven gear shaft 2 engaged rotates counterclockwise.According to
It is indicated in figure, left side is high-pressure outlet 3, and to pump high pressure fluid output when fluid, it is pump flow that right side, which is low-pressure inlet 4,
The entrance of low-pressure fluid when body.
Referring to Fig. 2 and Fig. 3, end bearing 102 and 101 position of end bearing before driven shaft are symmetrical above and below before driving shaft, structure
Symmetrically, the two joint place is plane, and bonding position has high-pressure oil feed slot 15 there are high pressure chest 13 on 13 end face of high pressure chest, high
Fluid is pressed to provide support pressure by high-pressure oil feed slot 15 for static-pressure sliding bearing；101 inner side end of end bearing before driven shaft
With bearing side drain pan 12,101 end face of end bearing has continuous draining guide channel 14 before driven shaft, from static-pressure sliding bearing
Fluid is leaked between transmission shaft will pass sequentially through bearing side drain pan 12 and draining guide channel 14 back to low pressure chamber 16.
Referring to Fig. 3 and Fig. 4, end bearing 102,103 and of driven shaft rear end bearing before end bearing 101, driving shaft before driven shaft
104 4 bearing arrangements of driving shaft rear end bearing are identical, and only the draining guide channel 14 positioned at side is symmetrical, therefore to axis
The explanation of bearing structure is by taking end bearing 101 before driven shaft as an example；There are inside end bearing 101 four circumferentially uniformly distributed axis before driven shaft
Hold oil-feed tank 17 and the axial high pressure through slot 20 for being connected to four bearing oil-feed tanks 17；End bearing 101 and active before driven shaft
102 joint place of end bearing has been connected to the bearing oil-feed tank 17 of two static-pressure sliding bearings, and and high pressure by connectivity slot 19 before axis
High-pressure oil feed slot 15 on 13 end face of chamber is connected, and high-pressure fluid will enter high-pressure oil feed slot 15, Jin Ertong by high pressure chest 13
Cross connectivity slot 19, axial high pressure through slot 20 enters four axial bearing oil-feed tanks 17；Bearing oil-feed tank 17 be located at driven shaft
The bearing static pressure chamber 21 of preceding 101 inner wall of end bearing is communicated by flow controller 18, and flow controller 18 is orifice restriction device or capillary section
Device is flowed, bearing static pressure chamber 21 is rectangular cavity；It is bearing inner wall face circumferentially deploying figure referring to Fig. 4 (b), inner wall is four uniformly distributed squares
Shape slot provides the bearing capacity of bearing by static pressure.
The course of work of the invention is as follows:
Power is inputted by driving gear shaft 1, by gear engagement, driven gear shaft 2 is driven to rotate, squeezed by low
It is pressed into the fluid that mouth 4 enters, so that the fluid that fluid enters high pressure chest 13 becomes high-pressure fluid, high-pressure fluid is largely pumped
High-pressure outlet 3 out, small part high-pressure fluid enter connectivity slot 19, Jin Erjin by the high-pressure oil feed slot 15 on 13 end face of high pressure chest
Enter four bearing oil-feed tanks 17 of axial high pressure through slot 20 and circumferential direction, the high-pressure fluid in bearing oil-feed tank 17 passes through flow controller 18
The static pressure chamber 21 for pouring in bearing inner wall face supports driven gear shaft 2 and driving gear shaft 1, has flowed out the fluid of static pressure chamber 21
Restore low pressure, low-pressure fluid is flowed out from the both ends of static-pressure sliding bearing, returned by bearing side drain pan 12 with draining guide channel 14
Low pressure chamber 16 is returned to, and is squeezed into high pressure chest 13 again, guarantees fuel oil gear pump continuous service.
Claims (5)
1. a kind of pressure applied to gear pump automatically supplies static-pressure sliding bearing, which is characterized in that the gear pump include cabinet with
And external toothing and the intracorporal driving gear shaft of case (1) and driven gear shaft (2) is arranged in parallel, driving gear shaft (1) and driven tooth
The both ends of wheel shaft (2) are flexibly connected by the static-pressure sliding bearing being sleeved on transmission shaft with cabinet, and the side of the cabinet is opened
Equipped with high-pressure outlet (3), the other side offers low-pressure inlet (4)；Wherein,
The ipsilateral static-pressure sliding bearing installation site of two transmission shafts is symmetrical and symmetrical configuration, the two joint place are plane, fitting
The side for being positioned against high-pressure outlet (3) offers high pressure chest (13), offers low pressure chamber towards the other side of low-pressure inlet (4)
(16), high-pressure oil feed slot (15) are offered on high pressure chest (13) end face, so that high-pressure fluid is quiet by high-pressure oil feed slot (15)
Sliding bearing is pressed to provide support pressure；If being uniformly provided with dry bearing oil-feed tank (17) in each static-pressure sliding bearing internal circumferential
And the axial high pressure through slot (20) for being connected to two neighboring bearing oil-feed tank (17), the inner wall of each static-pressure sliding bearing are opened
Equipped with bearing static pressure chamber (21) corresponding with dry bearing oil-feed tank if (17), the bearing static pressure chamber (21) be rectangular cavity, two
The ipsilateral static-pressure sliding bearing of transmission shaft passes through connectivity slot (19) for high-pressure oil feed slot (15) and two static-pressure sliding bearings respectively
Bearing oil-feed tank (17) be connected, each bearing static pressure chamber (21) is connected with corresponding bearing oil-feed tank (17)；
Each static-pressure sliding bearing inner side end offers bearing side drain pan (12), and static-pressure sliding bearing end face offers company
Continuous draining guide channel (14) is let out so that leaking fluid between static-pressure sliding bearing and transmission shaft and passing sequentially through bearing side
Oil groove (12) and draining guide channel (14) return to low pressure chamber (16).
2. a kind of pressure applied to gear pump according to claim 1 automatically supplies static-pressure sliding bearing, which is characterized in that
Each bearing static pressure chamber (21) is connected with corresponding bearing oil-feed tank (17) by flow controller (18).
3. a kind of pressure applied to gear pump according to claim 2 automatically supplies static-pressure sliding bearing, which is characterized in that
Flow controller (18) is orifice restriction device or capillary restrictor.
4. a kind of pressure applied to gear pump according to claim 1 automatically supplies static-pressure sliding bearing, which is characterized in that
Four bearing oil-feed tanks (17) are uniformly provided in each static-pressure sliding bearing internal circumferential.
5. a kind of pressure applied to gear pump according to claim 1 automatically supplies static-pressure sliding bearing, which is characterized in that
When work, power is inputted by driving gear shaft (1), by gear engagement, is driven driven gear shaft (2) rotation, is squeezed
The fluid entered by low-pressure inlet (4), so that the fluid that fluid enters high pressure chest (13) becomes high-pressure fluid, the big portion of high-pressure fluid
Divide and be pumped from high-pressure outlet (3), small part high-pressure fluid is entered by the high-pressure oil feed slot (15) on high pressure chest (13) end face
Connectivity slot (19), so enter axial high pressure through slot (20) and if circumferential dry bearing oil-feed tank (17), bearing oil-feed tank (17)
Interior high-pressure fluid pours in the bearing static pressure chamber (21) of static-pressure sliding bearing inner wall, supports driven gear shaft (2) and active
Gear shaft (1), the fluid of outflow bearing static pressure chamber (21) have restored low pressure, and low-pressure fluid is flowed out from static-pressure sliding bearing both ends,
Low pressure chamber (16) are returned to by bearing side drain pan (12) and draining guide channel (14), and are squeezed into high pressure chest again
(13), guarantee gear pump continuous service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340368.5A CN110094423A (en) | 2019-04-25 | 2019-04-25 | A kind of pressure applied to gear pump automatically supplies static-pressure sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340368.5A CN110094423A (en) | 2019-04-25 | 2019-04-25 | A kind of pressure applied to gear pump automatically supplies static-pressure sliding bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110094423A true CN110094423A (en) | 2019-08-06 |
Family
ID=67445952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910340368.5A Pending CN110094423A (en) | 2019-04-25 | 2019-04-25 | A kind of pressure applied to gear pump automatically supplies static-pressure sliding bearing |
Country Status (1)
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| CN (1) | CN110094423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594150A (en) * | 2019-10-24 | 2019-12-20 | 山东大学 | Spiral tooth double-arc tooth-shaped hydraulic gear pump with axial and radial static pressure support |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1474821A (en) * | 1974-05-29 | 1977-05-25 | Bosch Gmbh Robert | Gear fluid machine |
| CN86204876U (en) * | 1986-07-05 | 1987-06-17 | 机械工业部洛阳拖拉机研究所 | High-pressure gear pump (or motor) with combined dynamic-static pressure bearing |
| JPH04325785A (en) * | 1991-04-23 | 1992-11-16 | Shimadzu Corp | Gear pump |
| CN201461739U (en) * | 2009-06-17 | 2010-05-12 | 重庆大学 | Dynamic-static hybrid oil film bearing |
| CN102927002A (en) * | 2012-12-04 | 2013-02-13 | 泸州众大科技液压件有限公司 | High-pressure gear pump |
| CN204921361U (en) * | 2015-08-28 | 2015-12-30 | 河南航天液压气动技术有限公司 | Long -life is slide bearing for gear pump |
| CN106481551A (en) * | 2015-08-28 | 2017-03-08 | 河南航天液压气动技术有限公司 | A kind of long-life gear Sliding bearing for pump with spring-compensating |
-
2019
- 2019-04-25 CN CN201910340368.5A patent/CN110094423A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1474821A (en) * | 1974-05-29 | 1977-05-25 | Bosch Gmbh Robert | Gear fluid machine |
| CN86204876U (en) * | 1986-07-05 | 1987-06-17 | 机械工业部洛阳拖拉机研究所 | High-pressure gear pump (or motor) with combined dynamic-static pressure bearing |
| JPH04325785A (en) * | 1991-04-23 | 1992-11-16 | Shimadzu Corp | Gear pump |
| CN201461739U (en) * | 2009-06-17 | 2010-05-12 | 重庆大学 | Dynamic-static hybrid oil film bearing |
| CN102927002A (en) * | 2012-12-04 | 2013-02-13 | 泸州众大科技液压件有限公司 | High-pressure gear pump |
| CN204921361U (en) * | 2015-08-28 | 2015-12-30 | 河南航天液压气动技术有限公司 | Long -life is slide bearing for gear pump |
| CN106481551A (en) * | 2015-08-28 | 2017-03-08 | 河南航天液压气动技术有限公司 | A kind of long-life gear Sliding bearing for pump with spring-compensating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594150A (en) * | 2019-10-24 | 2019-12-20 | 山东大学 | Spiral tooth double-arc tooth-shaped hydraulic gear pump with axial and radial static pressure support |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190806 |
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| RJ01 | Rejection of invention patent application after publication |