CN109113989A - Gear box oil pump and gearbox with sealing structure - Google Patents
Gear box oil pump and gearbox with sealing structure Download PDFInfo
- Publication number
- CN109113989A CN109113989A CN201710482360.3A CN201710482360A CN109113989A CN 109113989 A CN109113989 A CN 109113989A CN 201710482360 A CN201710482360 A CN 201710482360A CN 109113989 A CN109113989 A CN 109113989A
- Authority
- CN
- China
- Prior art keywords
- oil
- gear box
- sealing
- rotor
- axis hole
- 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
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Classifications
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
-
- 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
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The present invention provides a kind of gear box oil pump and gearbox with sealing structure.Gear box oil pump of the invention, including pump case, pump cover and transmission shaft, rotor is provided in the cavity that the pump case and the pump cover surround, axis hole is offered on the pump case, the transmission shaft is threaded through in the axis hole, and the transmission shaft is connected with the rotor, and the axis hole end is provided with oil sealing, sealing ring is provided on the shaft hole inner wall, the sealing ring is between the axis hole and the transmission shaft.The present invention can make the oil sealing in oil pump oil pump will not be avoided oil leakage phenomenon occur by excessive pressure and impact force.
Description
Technical field
The present invention relates to machinery field more particularly to a kind of gear box oil pumps and gearbox with sealing structure.
Background technique
With the development of science and technology more and more automobiles use automatic gear-box as variable transmission mechanism.With it is manual
Gearbox is compared, and automatic gear-box does not need to manually control clutch, can automatically be changed transmission ratio and driving torque, be reached
Speed changing effect.
Currently, automatic gear-box has generally included gear box oil pump, power source of the gear box oil pump as automatic gear-box,
The hydraulic oil for having certain flow and pressure is provided to gearbox, and passes through Hydraulic coupling for power transmission to gearbox.Speed change
It is provided with rotor in the shell of case oil pump, and offers through-hole on shell, transmission shaft is worn by outside into shell, and and
Rotor connection.Gear box oil pump at work, due to the presence of fit-up gap between part, has certain hydraulic oil leakage, because
And oil sealing can be provided on oil pump, and by setting oil drainage structure, the oil of leakage is passed through inlet port.
However, there are certain pressure for the oil liquid of leakage, oil sealing can be impacted, leads to oil seal failure or damage, generates oil leak
Phenomenon.
Summary of the invention
The present invention provides a kind of gear box oil pump and gearbox with sealing structure, can make the oil sealing in oil pump will not
By excessive pressure and impact force, oil pump is avoided oil leakage phenomenon occur.
In a first aspect, the present invention provides a kind of gear box oil pump with sealing structure, including pump case, pump cover and transmission
It is provided with rotor in the cavity that axis, pump case and pump cover surround, axis hole is offered on pump case, transmission shaft is threaded through in axis hole, transmission
Axis is connected with rotor, and axis hole end is provided with oil sealing, and sealing ring is provided on shaft hole inner wall, and sealing ring is located at axis hole and transmission shaft
Between.
Optionally, sealing ring is between oil sealing and cavity.
Optionally, axis hole side wall offers the resettlement groove of annular, and sealing ring is arranged in resettlement groove.
Optionally, the working face of sealing ring protrudes from outside resettlement groove.
Optionally, resettlement groove and transmission shaft is axially vertical.
Optionally, resettlement groove is rectangle in the section on axis hole axial direction.
Optionally, the inside of sealing ring is contacted with transmission shaft.
Optionally, sealing ring is wear-resistant seal ring.
Optionally, rotor includes internal rotor and outer rotor, and internal rotor and transmission axis connection, outer rotor and internal rotor engage,
Cavity between internal rotor and outer rotor is divided into oil sucting cavity and pumping cavity, and the oil inlet opened up on oil sucting cavity and shell is connected to,
The oil outlet opened up on pumping cavity and shell is connected to.
Second aspect, the present invention provide a kind of gearbox, including as described above with the gear box oil pump of sealing structure.
Gear box oil pump with sealing structure of the invention includes pump case, pump cover and transmission shaft, and pump case is surrounded with pump cover
Cavity in be provided with rotor, axis hole is offered on pump case, transmission shaft is threaded through in axis hole, and transmission shaft is connected with rotor, axis hole
End is provided with oil sealing, sealing ring is provided on shaft hole inner wall, sealing ring is between axis hole and transmission shaft.Sealing is utilized in this way
Ring is blocked between axis hole and rotation axis, can block the high-voltage oil liquid in pump housing cavity in advance, to play buffering
Effect, the hydraulic oil liquid after sealing ring buffers, pressure and flow velocity when flowing to oil sealing reduces, and makes oil sealing will not be by
Big pressure and impact force avoids oil leakage phenomenon so that oil sealing can normally be sealed.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the gear box oil pump with sealing structure that the embodiment of the present invention one provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is the structural schematic diagram for the gear box oil pump with sealing structure that the embodiment of the present invention one provides.Such as Fig. 1 institute
Show, the gear box oil pump provided in this embodiment with sealing structure, including pump case 1, pump cover 2 and transmission shaft 3, pump case 1 and pump
It is provided with rotor 4 in the cavity that lid 2 surrounds, axis hole 11 is offered on pump case 1, transmission shaft 3 is threaded through in axis hole 11, transmission shaft 3
It is connected with rotor 4,11 end of axis hole is provided with oil sealing 5, sealing ring 6 is provided on 11 inner wall of axis hole, and sealing ring 6 is located at axis hole 11
Between transmission shaft 3.
Wherein, the pump case 1 of gear box oil pump and pump cover 2 define the pump housing of gear box oil pump, pump body setting jointly
There is rotor 4, and is provided with the axis hole 11 that can wear transmission shaft 3 on pump case 1, transmission shaft 3 is penetrated in pump housing cavity by axis hole 11,
It is connected again with the rotor of cavity inside 4, to drive rotor 4 to be rotated, has the function that provide pressure oil liquid.Because of gearbox
There is each part of the pump body of oil pump gap to cause oil liquid leakage to avoid hydraulic oil liquid from oozing out from these gaps, pump
11 end of axis hole of shell is provided with oil sealing 5, and oil sealing 5 can prevent hydraulic oil liquid from leaking to outside pump case 1, guarantees the leakproofness of the pump housing.
In addition, it is optional, it is additionally provided with oil return circuit inside pump case 1, so that the hydraulic oil of leakage can flow back into pump along oil return circuit
In internal cavity.
In addition, the rotor 4 inside gear box oil pump can be diversified forms, for example, the rotor 4 inside gear box oil pump wraps
Include internal rotor and outer rotor, internal rotor and transmission axis connection, outer rotor and internal rotor engagement, the sky between internal rotor and outer rotor
Chamber is divided into oil sucting cavity and pumping cavity, and the oil inlet opened up on oil sucting cavity and pump case is connected to, and what is opened up on pumping cavity and pump case goes out
Hydraulic fluid port connection.In general, internal rotor and outer rotor are gear rotor, and internal rotor usually with outer rotor internal messing, in this way when
When internal rotor rotates under the driving of transmission shaft, outer rotor is also rotate in same direction, so that the cavity volume of oil sucting cavity expands.It inhales in this way
Oil pocket internal pressure reduces, and under pressure, hydraulic oil is constantly inhaled among oil sucting cavity from oil inlet, and in oil sucting cavity
Oil is transmitted among pumping cavity by internal rotor or outer rotor；And at this point, causing the cavity of pumping cavity because of the rotation of inner and outer rotors
Volume reduces, so pressure oil cavity pressure becomes larger, so that the oil in pumping cavity is pressed into oil outlet.In this way in internal rotor and outside
Under the continuous turning effort of rotor, hydraulic oil is pressed into oil outlet from pumping cavity constantly out of inlet port sucking oil sucting cavity.
Because the oil liquid pressure inside Lube pump body of speed changing box is larger, oil sealing 5 when being sealed, suffered by
Pressure is also larger, and in order to avoid oil sealing 5 is washed away by excessive oil pressure, sealing ring 6, sealing ring 6 can be arranged on 11 inner wall of axis hole
It is blocked between axis hole 11 and rotation axis 3, and the position of sealing ring 6 is between oil sealing 5 and cavity, thus can block in advance
High-voltage oil liquid in pump housing cavity, to play buffer function, the hydraulic oil liquid after the buffering of sealing ring 6 is flow to
Pressure and flow velocity when oil sealing 5 reduce, and make oil sealing 5 will not be by excessive pressure and impact force, to ensure that oil sealing 5
Normal sealing and use.
Common, in order to which sealing ring 6 to be arranged in the pump housing of gear box oil pump, 11 side wall of axis hole offers the peace of annular
Slot 61 is set, sealing ring 6 is arranged in resettlement groove 61.The slot position on axis hole 11 is utilized in this way, so that it may which sealing ring 6 is fixed on it
In, sealing ring 6 is fixed in resettlement groove 61, and when by Oil shocking, a part of active force being subject to can be transmitted to placement
On slot 61, thus disperse Oil shocking power, it is preferable to the positioning and fixing effect of sealing ring 6.In addition, sealing ring 6 and axis hole
11 side walls may be unitary design, to reinforce the structural strength of sealing ring 6.
In order to guarantee sealing ring 6 to the buffering effect of high-voltage oil liquid, the working face of sealing ring 6 is protruded from outside resettlement groove 61.
At least a part of protrusion of sealing ring 6 in this way is in the gap of 1 axis hole 11 of transmission shaft 3 and pump case, when high-voltage oil liquid passes through transmission
When gap between axis 3 and axis hole 11, it can be stopped by part of the protrusion of sealing ring 6 among gap, and the flow velocity of oil liquid
It is slack-off, it is buffered.
Optionally, in order to make uniform force in 11 all directions of axis hole, the axial direction of resettlement groove 61 Yu transmission shaft 3 can generally be made
Vertically.Sealing ring 6 in this way in resettlement groove 61, axial direction is also consistent with axially retaining for transmission shaft 3, i.e. sealing ring 6
In on the same section of transmission shaft 3 in the axial direction.The thus suffered oil liquid pressure and impact in all directions of sealing ring 6
Power is equal, can to avoid sealing ring 6 because it is damaged caused by unbalance stress, fall off phenomena such as.
Optionally, to reduce difficulty of processing, usual annular arrangements slot 61 can be in the section on 11 axial direction of axis hole
Rectangle.The annular groove of rectangular section can guarantee the normal placement of sealing ring 6 and fix, and be convenient for carrying out on 11 inner wall of axis hole
Machine-shaping.
In addition, to reinforce sealing ring 6 to the buffering effect of oil liquid, the height and axis hole 11 and transmission of sealing ring 6 can be allowed
Spacing between axis 3 keeps approximate consistent.At this point, the inside of sealing ring 6 is contacted with transmission shaft 3.Axis hole 11 is flowed through in this way and is passed
The oil liquid in 3 gap of moving axis can be stopped by sealing ring 6, thus the pressure of oil liquid and flow velocity can decline to a great extent, and play
Buffering effect is preferable.
Optionally, because gear box oil pump at work, transmission shaft 3 do not stalled in axis hole 11 it is dynamic, so sealing ring 6 with
Friction can be generated between transmission shaft 3, to avoid sealing ring 6 from being damaged because of friction, sealing ring 6 is wear-resistant seal ring, i.e., by wear-resisting
The preferable sealing material of property is made.The continuous friction of transmission shaft 3 can be born on the inside of sealing ring 6 in this way, ensures the structure of sealing ring 6
Integrality.
In the present embodiment, the gear box oil pump with sealing structure includes pump case, pump cover and transmission shaft, and pump case is enclosed with pump cover
At cavity in be provided with rotor, axis hole is offered on pump case, transmission shaft is threaded through in axis hole, and transmission shaft is connected with rotor, axis
Bore ends are provided with oil sealing, sealing ring are provided on shaft hole inner wall, sealing ring is between axis hole and transmission shaft.In this way using close
Seal ring is blocked between axis hole and rotation axis, can block the high-voltage oil liquid in pump housing cavity in advance, to play slow
Punching effect, the hydraulic oil liquid after sealing ring buffers, pressure and flow velocity when flowing to oil sealing reduce, and will receive oil sealing not
Excessive pressure and impact force avoids oil leakage phenomenon so that oil sealing can normally be sealed.
Embodiment two
The present invention also provides a kind of gearbox, inside include the structures such as fluid torque-converter, further include such as aforementioned implementation
With the gear box oil pump of sealing structure described in example one.Wherein, the specific structure of gear box oil pump and function are aforementioned
It is described in detail and illustrates in embodiment one, details are not described herein again.
It include gear box oil pump in gearbox in the present embodiment, gear box oil pump includes pump case, pump cover and transmission shaft,
Be provided with rotor in the cavity that pump case and pump cover surround, axis hole offered on pump case, transmission shaft is threaded through in axis hole, transmission shaft and
Rotor connection, axis hole end is provided with oil sealing, is provided with sealing ring on shaft hole inner wall, sealing ring be located at axis hole and transmission shaft it
Between.It is blocked between axis hole and rotation axis using sealing ring in this way, the high-voltage oil liquid in pump housing cavity can be blocked in advance,
To play buffer function, the hydraulic oil liquid after sealing ring buffers, pressure and flow velocity when flowing to oil sealing are reduced, and make
Oil sealing will not be avoided oil leakage phenomenon so that oil sealing can normally be sealed by excessive pressure and impact force.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of gear box oil pump with sealing structure, which is characterized in that including pump case, pump cover and transmission shaft, the pump case
It is provided with rotor in the cavity surrounded with the pump cover, axis hole is offered on the pump case, the transmission shaft is threaded through the axis
In hole, the transmission shaft is connected with the rotor, and the axis hole end is provided with oil sealing, and sealing is provided on the shaft hole inner wall
Ring, the sealing ring is between the axis hole and the transmission shaft.
2. gear box oil pump according to claim 1, which is characterized in that the sealing ring is located at the oil sealing and the sky
Between chamber.
3. gear box oil pump according to claim 1 or 2, which is characterized in that the axis hole side wall offers the peace of annular
Slot is set, the sealing ring is arranged in the resettlement groove.
4. gear box oil pump according to claim 3, which is characterized in that the axial direction of the resettlement groove and the transmission shaft is hung down
Directly.
5. gear box oil pump according to claim 1 or 2, which is characterized in that the resettlement groove is along axis hole axial direction
On section be rectangle.
6. gear box oil pump according to claim 1 or 2, which is characterized in that the inside of the sealing ring and the transmission
Axis contact.
7. gear box oil pump according to claim 1 or 2, which is characterized in that the sealing ring is wear-resistant seal ring.
8. gear box oil pump according to claim 1 or 2, which is characterized in that the rotor includes internal rotor and outer rotor,
The internal rotor and the transmission axis connection, the outer rotor and internal rotor engagement, the internal rotor and the outer rotor
Between cavity be divided into oil sucting cavity and pumping cavity, the oil inlet opened up on the oil sucting cavity and the shell is connected to, the pressure
The oil outlet opened up on oil pocket and the shell is connected to.
9. a kind of gearbox, which is characterized in that including the described in any item gearboxes with sealing structure of such as claim 1-8
Oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710482360.3A CN109113989A (en) | 2017-06-22 | 2017-06-22 | Gear box oil pump and gearbox with sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710482360.3A CN109113989A (en) | 2017-06-22 | 2017-06-22 | Gear box oil pump and gearbox with sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109113989A true CN109113989A (en) | 2019-01-01 |
Family
ID=64732867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710482360.3A Pending CN109113989A (en) | 2017-06-22 | 2017-06-22 | Gear box oil pump and gearbox with sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109113989A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339099A (en) * | 2021-04-29 | 2021-09-03 | 东风商用车有限公司 | Power take-off system of integrated oil pump and gearbox |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1246664A (en) * | 1959-05-14 | 1960-11-18 | Teves Kg Alfred | Hydraulic rotary piston machine |
| JPH09159033A (en) * | 1995-12-11 | 1997-06-17 | Nissan Motor Co Ltd | Seal structure of oil pump for automatic transmission |
| JP2000179466A (en) * | 1998-10-06 | 2000-06-27 | Denso Corp | Rotary pump and brake device provided with rotary pump |
| CN101571121A (en) * | 2009-06-02 | 2009-11-04 | 安徽合力股份有限公司 | Oil supplementing pump for gear-box of 2-3.5 ton fork truck |
| CN202381323U (en) * | 2011-11-18 | 2012-08-15 | 杭州萧山东方液压件有限公司 | Cycloid pump for automatic transmission of car |
| CN205841187U (en) * | 2016-08-04 | 2016-12-28 | 中国神华能源股份有限公司 | Sealing structure and gear pump for gear pump |
| CN207539027U (en) * | 2017-06-22 | 2018-06-26 | 江阴华欧德汽车动力***研发有限公司 | Gear box oil pump and gearbox with sealing structure |
-
2017
- 2017-06-22 CN CN201710482360.3A patent/CN109113989A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1246664A (en) * | 1959-05-14 | 1960-11-18 | Teves Kg Alfred | Hydraulic rotary piston machine |
| JPH09159033A (en) * | 1995-12-11 | 1997-06-17 | Nissan Motor Co Ltd | Seal structure of oil pump for automatic transmission |
| JP2000179466A (en) * | 1998-10-06 | 2000-06-27 | Denso Corp | Rotary pump and brake device provided with rotary pump |
| CN101571121A (en) * | 2009-06-02 | 2009-11-04 | 安徽合力股份有限公司 | Oil supplementing pump for gear-box of 2-3.5 ton fork truck |
| CN202381323U (en) * | 2011-11-18 | 2012-08-15 | 杭州萧山东方液压件有限公司 | Cycloid pump for automatic transmission of car |
| CN205841187U (en) * | 2016-08-04 | 2016-12-28 | 中国神华能源股份有限公司 | Sealing structure and gear pump for gear pump |
| CN207539027U (en) * | 2017-06-22 | 2018-06-26 | 江阴华欧德汽车动力***研发有限公司 | Gear box oil pump and gearbox with sealing structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339099A (en) * | 2021-04-29 | 2021-09-03 | 东风商用车有限公司 | Power take-off system of integrated oil pump and gearbox |
| CN113339099B (en) * | 2021-04-29 | 2022-06-28 | 东风商用车有限公司 | Power take-off system of integrated oil pump and gearbox |
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