CN209444555U - A kind of high pressure gear oil pump - Google Patents
A kind of high pressure gear oil pump Download PDFInfo
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- CN209444555U CN209444555U CN201920047079.1U CN201920047079U CN209444555U CN 209444555 U CN209444555 U CN 209444555U CN 201920047079 U CN201920047079 U CN 201920047079U CN 209444555 U CN209444555 U CN 209444555U
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- oil pump
- gear
- high pressure
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- driving gear
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Abstract
The utility model discloses a kind of high pressure gear oil pumps, relate generally to gear oil pump technical field, including driving gear, driven gear, side plate, the pump housing, needle bearing, outside framework oil seal, the pump housing is connect by attachment screw with oil pump rear lid, hole retaining ring is equipped in the outside framework oil seal side, the pump housing and crude oil pump front design are integrated the referred to as pump housing, oil pump rear lid is solely integrated, shorten the total length of driving gear shaft, original supported at three point is changed to two o'clock support, static determinacy work status is changed to by original indeterminate state, reduce operating noise, improve service life.
Description
Technical field
The utility model relates generally to gear oil pump technical field, specifically a kind of high pressure gear oil pump.
Background technique
With the development of society, hydraulic control has been widely used in the mechanical equipment of all trades and professions, the pressure in hydraulic system
Power oil is usually to be supplied by oil pump, and gear oil pump is suitable for conveying the various liquid for having lubricity, it is exactly in hydraulic drive
The one kind being widely adopted.A kind of existing gear oil pump, it is very nearly the same with traditional gear oil pump, and as shown in Figure 1: it has pump
Body, needle bearing, side plate, driven gear, driving gear, screw, the composition such as oil pump front cover, oil sealing, bearing.Driving gear with from
Moving gear is 5,10 tooth of modulus, and 20 ° of pressure angle, center is away from 55 millimeters, 36 millimeters of the diameter of axle.The each revolution of discharge capacity of the type exists respectively
32,40,50,63,80,100 milliliters.Rated operating pressure 20Mpa.
The gear oil pump shares the connection of 8 screws when installing oil pump front cover, only in left figure both the above screw not by
The interference of component, remaining 6 screw have the different degrees of interference by oil pump front cover right side connecting flange in right figure, when
Therefore batch production then can influence production efficiency with having a greatly reduced quality.Furthermore oil pump front cover size X is because by mountable screw
Size limitation, and can not be small again, driving gear axial direction length only increases with it.With the increase of this structure length, rigidity
It certainly will decline, then need there are three nonstandard bearings to support, driving gear is just constrained by three, is always under indeterminate state
Work, it is higher with regard to relative requirement to machining accuracy.In conclusion contradiction goes out to limit and make in the installation dimension by oil pump front cover
More with material at huge structure, manufacturing cost is high, and production efficiency is low.Because jib-length is big in installing and using, Stiffness,
It is be easy to cause the performance and running accuracy for influencing oil pump, and be easy to cause the defects of operating is shaken, noise is big, the service life is short.
Utility model content
In view of the deficiencies in the prior art and defect, the utility model provides a kind of high pressure gear oil pump.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution: a kind of high pressure gear oil pump, including
Driving gear, driven gear, side plate, the pump housing, needle bearing, outside framework oil seal, the pump housing pass through attachment screw and oil pump rear lid
Connection is equipped with hole retaining ring in the outside framework oil seal side.
The driving gear and driven gear are 5,10 tooth of modulus, pressure as a further improvement of the utility model,
20 ° of angle, center is away from 55 millimeters, 35 millimeters of the diameter of axle.
The pump body design is integral as a further improvement of the utility model, connect with independent oil pump rear lid.
The tooth cavity thickness of the pump housing has thickeied 2 millimeters as a further improvement of the utility model, makes the specified of oil pump
Operating pressure is increased to 25Mpa by original 20Mpa.
The diameter of axle of the driving gear and driven gear is changed by original Φ 36 as a further improvement of the utility model,
The width of Φ 35, bearing are more 34.5 millimeters original by 30.
There are three bearing supports for the driving gear original as a further improvement of the utility model, are changed to two supports,
Static determinacy work status is changed to by original indeterminate state.
Compared with prior art, the utility model has the beneficial effect that
1, the pump housing of the pump is to be integrated the former pump housing and oil pump front design, improves the rigidity of oil pump, reduces oil
The entirety of pump.
2, pump housing tooth cavity thickness has thickeied 2 millimeters, is increased to the rated operating pressure of oil pump by original 20Mpa
25Mpa。
3, the diameter of axle of driving gear and driven gear changes Φ 35 by original Φ 36, optimizes diameter of axle series, makes original package
Nonstandard bearing is standardized.The width of bearing is more 34.5 millimeters original by 30, increases the compression area of bearing, drops
The low compressive load per unit area of bearing, improves the service life of oil pump.
4, the total length of driving gear is shortened, covert improves its rigidity.Difficulty of processing is fallen below, former material has been saved
Material.Pump body overall length than originally shortens 41 millimeters, and structure is more compact, reduces installation space.
5, there are three bearing supports for driving gear original, are changed to two supports, are changed to static determinacy shape by original indeterminate state
State work, reduces operating noise, improves service life.
6, oil pump rear lid is solely integrated.Pump body part is installed when installation, closes oil pump rear lid, using mechanical system
8 attachment screws are screwed.The interference that not will receive any component, production efficiency is increased substantially than originally.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and detailed description:
Fig. 1 is the main view of the prior art；
Fig. 2 is the side view of the prior art；
Fig. 3 is a kind of high pressure gear oil pump main view of the utility model；
Fig. 4 is a kind of high pressure gear oil pump side view of the utility model；
Fig. 5 is a kind of high pressure gear oil pump driving gear of the utility model and driven gear structural schematic diagram；
In figure: 1 oil pump rear lid, 2 attachment screws, 3 driving gears, 4 driven gears, 5 pump housings, 6 side plates, 7 needle bearings, 8
Outside framework oil seal, 9 outside framework oil seals.
Specific embodiment
In order to which the technical solution of the utility model and beneficial effect are more clearly understood, with reference to the accompanying drawing and it is embodied
The utility model is described in further detail in example, it should be understood that the specific embodiments described herein are only used for managing
The utility model is solved, is not used to limit the utility model, those of ordinary skill in the art are not before making creative work
Every other embodiment obtained is put, is fallen within the protection scope of the utility model.
The design utility model to be solved is the technical problem involved in technical background, is not repeated here herein,
This is a kind of high pressure gear oil pump, including oil pump rear lid 1, attachment screw 2, driving gear 3, driven gear 4, side plate 6, needle roller axis
Holding 7, outside framework oil seal 8, hole retaining ring 9, driving gear and driven gear are 5,10 tooth of modulus, and 20 ° of pressure angle, because of center for standard
Away from 50 millimeters, operating center distance=55 millimeter are taken, 35 millimeters of the diameter of axle.
Meshingangleα=arc (reference center distance/operating center distance * cos20 °)
=arc (50/55*0.9397)
=arc0.85427=31 ° 20 '
Because of tooth number Z < Zmin；It must be conjugated using positive-angle,
It is computed: net slip coefficient x=1.29,
X1=x2=x/2=0.645 is taken,
The type has each revolution of discharge capacity respectively at 32,40,50,63,80,100 milliliters.Rated operating pressure 25Mpa.
The novel utilitarian design is that the pump housing and crude oil pump front design are integrated to the referred to as pump housing 5, and oil pump rear lid 1 is solely one
Body.Original supported at three point is changed to two o'clock support by the total length for shortening driving gear shaft 3.
The pump housing 5 of the pump is to be integrated the former pump housing and oil pump front design, improves the rigidity of oil pump, reduces oil pump
Entirety.
5 tooth cavity thickness of the pump housing has thickeied 2 millimeters, is increased to the rated operating pressure of oil pump by original 20Mpa
25Mpa。
The diameter of axle of driving gear 3 and driven gear 4 changes Φ 35 by original Φ 36, optimizes diameter of axle series, makes original package
Nonstandard bearing is standardized.The width of bearing is more 34.5 millimeters original by 30, increases the compression area of bearing, drops
The low compressive load per unit area of bearing, improves the service life of oil pump.
The total length of driving gear 3 is shortened, covert improves its rigidity.Difficulty of processing is fallen below, former material has been saved
Material.Pump body overall length than originally shortens 41 millimeters, and structure is more compact, reduces installation space.
Driving gear 3 is former, and there are three bearing supports, are changed to two supports, are changed to static determinacy state by original indeterminate state
Work, reduces operating noise, improves service life.
Oil pump rear lid 1 is solely integrated.5 inner body of the pump housing is installed when installation, oil pump rear lid 1 is closed, using machinery side
Formula screws 8 attachment screws 2.The interference that not will receive any component, production efficiency is increased substantially than originally.
Working principle: extrinsic power drives driving gear 3 by being rotated clockwise in left figure, and synchronous drive is driven
Gear 4 rotates counterclockwise, and the tooth of right side oil sucting cavity is gradually disengaged, and the volume of sealing space is gradually increased, and forms oil suction.
It is drawn into the oil liquid of between cog to rotate and driven to left side pumping cavity with gear, the tooth at pumping cavity is progressively engaged, swept volume
It gradually becomes smaller, oil liquid is extruded, and forms oil extraction.Gear gyrates, and just oil is continuously sucted and is discharged, the company of being formed
Continue to oil circuit fuel feeding.
The technical requirements of oil pump rear lid 1, the pump housing 5: casting is there is not allowed that any casting flaw such as stomata, sand holes, shrinkage porosite.Casting
It must be through ageing treatment after part casting.It is R1-2 that the curving of castings, which is not specified,.The part completion of processing must make pressure test >=28Mpa
And dwell time >=5 minute.
It is worth noting that, term " center ", "upper", "lower", "left", "right", " perpendicular in the description of the present invention,
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Claims (6)
1. a kind of high pressure gear oil pump, including driving gear, driven gear, side plate, the pump housing, needle bearing, outside framework oil seal, special
Sign is: the pump housing is connect by attachment screw with oil pump rear lid, is equipped with hole retaining ring in the outside framework oil seal side.
2. a kind of high pressure gear oil pump according to claim 1, it is characterised in that: the driving gear and driven gear are equal
For 5,10 tooth of modulus, 20 ° of pressure angle, center is away from 55 millimeters, 35 millimeters of the diameter of axle.
3. a kind of high pressure gear oil pump according to claim 1, it is characterised in that: the pump body design be integral with solely
Vertical oil pump rear lid connection.
4. a kind of high pressure gear oil pump according to claim 1, it is characterised in that: the tooth cavity thickness of the pump housing thickeies
2 millimeters, the rated operating pressure of oil pump is made to be increased to 25Mpa by original 20Mpa.
5. a kind of high pressure gear oil pump according to claim 1, it is characterised in that: the driving gear and driven gear
The diameter of axle changes Φ 35 by original Φ 36, and the width of bearing is more 34.5 millimeters original by 30.
6. a kind of high pressure gear oil pump according to claim 1, it is characterised in that: there are three bearings for the driving gear original
Support is changed to two supports, is changed to static determinacy work status by original indeterminate state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920047079.1U CN209444555U (en) | 2019-01-11 | 2019-01-11 | A kind of high pressure gear oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920047079.1U CN209444555U (en) | 2019-01-11 | 2019-01-11 | A kind of high pressure gear oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209444555U true CN209444555U (en) | 2019-09-27 |
Family
ID=68017579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920047079.1U Active CN209444555U (en) | 2019-01-11 | 2019-01-11 | A kind of high pressure gear oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209444555U (en) |
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2019
- 2019-01-11 CN CN201920047079.1U patent/CN209444555U/en active Active
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