CN207145223U - A kind of small impact gear-type oil pump - Google Patents
A kind of small impact gear-type oil pump Download PDFInfo
- Publication number
- CN207145223U CN207145223U CN201721031609.0U CN201721031609U CN207145223U CN 207145223 U CN207145223 U CN 207145223U CN 201721031609 U CN201721031609 U CN 201721031609U CN 207145223 U CN207145223 U CN 207145223U
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- China
- Prior art keywords
- floating seat
- gear
- rotary shaft
- rear class
- prime
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
It the utility model is related to oil pump technology field, more particularly to a kind of small impact gear-type oil pump, including the pump housing, the inside of the pump housing is provided with prime gear, rear class gear, upper floating seat and middle floating seat, prime gear includes prime driving gear and prime actively from wheel, rear class gear includes rear class driving gear and rear class actively from wheel, and upper floating seat includes upper floating seat I and upper floating seat II, and middle floating seat includes middle floating seat I and middle floating seat II；Prime driving gear axis is provided with rotary shaft I, and rear class driving gear is provided with rotary shaft II, rotary shaft III and rotary shaft IV are respectively equipped with prime driven gear and rear class driven gear；A pair of circular holes are equipped with upper floating seat and middle floating seat.The utility model is used in conjunction with each other using prime gear and rear class gear, is significantly reduced the flow pulsation and pressure fluctuation in Meshing Process of Spur Gear, is optimized gear oil pump axial clearance compensation and radial direction dynamic balancing.
Description
Technical field
Oil pump technology field is the utility model is related to, more particularly to a kind of small impact gear-type oil pump.
Background technology
Gear oil pump is applied to convey the various liquid or pressure oil for having lubricity, is transported extensively in many mechanical systems
With.Traditional gear oil pump, including the pump housing, the protecgulum and bonnet that are respectively arranged on pump housing both ends, and the active in the pump housing
Gear and driven gear, driving gear drives driven gear rotation to gear oil pump in the running, and fluid enters the pump housing from fuel feed hole
It is interior and from oil outlet discharge.
Gear oil pump of the prior art, is generally provided only with a pair of principal and subordinate wheels, and such case occurs because gear is nibbled
Contact ratio and backlash during conjunction is larger, and oil pump easily makes hydraulic pressure heating of oil in the course of the work, and volumetric efficiency is low, and power is small,
The problem of service life is short.
Utility model content
(1) technical problem solved
The utility model aims to overcome that the shortcomings that above-mentioned prior art, there is provided a kind of small impact gear-type oil pump,
It is simple in construction, effectively improve the operating efficiency and service life of gear-type oil pump.
(2) technical scheme
A kind of small impact gear-type oil pump, including the pump housing, the front side of the pump housing and rear side are respectively equipped with front pump cover with after
Pump cover, the inside of the pump housing are provided with prime gear, rear class gear, upper floating seat and middle floating seat, the prime gear bag
Prime driving gear and prime are included actively from wheel, and the rear class gear includes rear class driving gear and rear class actively from wheel, described
Upper floating seat includes upper floating seat I and upper floating seat II, and the middle floating seat includes middle floating seat I and middle floating seat
Ⅱ；The prime driving gear axis is provided with rotary shaft I, and the both ends of the rotary shaft I are equipped with external splines, the rotation
The right-hand member of axle I reaches the outside of front pump cover, and the rear class driving gear is provided with rotary shaft II, in the inside of the rotary shaft II
Sky, and internal spline is provided with, the left end of rotary shaft I is inserted in rotary shaft II, and external splines and internal spline intermeshing, institute
State and be respectively equipped with rotary shaft III and rotary shaft IV on prime driven gear and rear class driven gear；The upper floating seat and centre are floated
A pair of circular holes are equipped with dynamic seat, the upper floating seat I and upper floating seat II are respectively provided at the left and right sides of the pump housing, the centre
Floating seat I and middle floating seat II are arranged on pump housing middle part, and the right-hand member of the rotary shaft I is inserted in the upside of floating seat I
Circular hole in；The left end of the rotary shaft II is inserted in the circular hole of the upside of floating seat II, and the prime driving gear is with after
The interval that level driving gear is separately positioned on floating seat I and middle floating seat I, upper floating seat II and middle floating seat II forms
In, the both ends of rotary shaft III are respectively inserted into floating seat I and the circular hole of the downside of middle floating seat I, and prime is driven
Gear is arranged in the interval of floating seat I and middle floating seat I, and the both ends of rotary shaft IV are respectively inserted into floating seat II
In the circular hole of the middle downside of floating seat II, and rear class driven gear is arranged between floating seat II and middle floating seat II
In.
Further, outside framework oil seal is provided between the front pump cover and rotary shaft I, is provided between the rear pump cover and the pump housing
Sealing ring.
Further, the prime driving gear and rotary shaft I, rear class driving gear and rotary shaft II, prime driven tooth
Wheel and rotary shaft III, and rear class driven gear and rotary shaft IV being cast integrally structure.
Further, the prime driving gear and prime driven gear, rear class driving gear and rear class driven gear phase
Mutually engagement；Along along the perspective plane of axis, position relationship is prime driving gear for the prime driving gear and rear class driving gear
Flank profil be located in the teeth groove of rear class driving gear.
Further, figure-three groove is equipped with the upper floating seat I and upper floating seat II, is set in the figure-three groove
There is figure-three sealing ring, and respectively between upper floating seat I and front pump cover, upper floating seat II and rear pump cover；Floated among described
Seat II is provided with 8-shaped groove, 8-shaped sealing ring is provided with the 8-shaped groove, and float positioned at middle floating seat I and centre
Between dynamic seat II.
Further, the inwall of the circular hole is provided with bushing.
Further, the side wall of the prime driving gear and prime driven gear is floated with upper floating seat I and centre respectively
Dynamic seat I is brought into close contact；The rear class driving gear and rear class driven gear are tight with upper floating seat II and middle floating seat II respectively
Closely connected conjunction.
(3) beneficial effect
A kind of small impact gear-type oil pump provided by the utility model, being cooperated using prime gear and rear class gear is made
With, significantly reduce the flow pulsation and pressure fluctuation in Meshing Process of Spur Gear, optimize gear oil pump axial clearance compensation and
Radial direction dynamic balancing；Upper floating seat and middle floating seat can ensure that the stability of working gear operating, lift the using effect of oil pump；
It is flexible after figure-three sealing ring and the compression of 8-shaped sealing ring, can be in upper floating seat and middle floating seat and gear fretting wear
In the state of, carry out promotion compensation, floating seat and middle floating seat and gear side are brought into close contact in guarantee, avoid the formation of sky
Gap, cause to reveal.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, make required for being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only of the present utility model, protect some realities
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the sectional view of A-A in Fig. 1；
Fig. 3 is the sectional view of B-B in Fig. 1；
Fig. 4 is the structural representation of floating seat II and figure-three sealing ring on the utility model；
In accompanying drawing, the list of parts representated by each label is as follows：
The 1- pump housings, 2- front pump covers, 3- rear pump covers, 4- prime driving gears, 5- prime driven gears, 6- rear class driving tooths
Wheel, 7- rear class driven gears, the upper floating seats I of 8-, the upper floating seats II of 9-, 10- centres floating seat I, 11- centres floating seat II,
12- rotary shafts I, 13- rotary shafts III, 14- rotary shafts IV, 15- external splines, 16-3 font grooves, 17- outside framework oil seals, 18- sealings
Circle, 19-3 font sealing rings, 20-8 font sealing rings, 21- bushings, 22- circular holes.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belong to the scope of the utility model protection.
As shown in Figure 1 to 4, a kind of small impact gear-type oil pump, including the pump housing 1, the front side of the pump housing 1 and rear side difference
Provided with front pump cover 2 and rear pump cover 3, the inside of the pump housing 1 is provided with prime gear, rear class gear, upper floating seat and middle floating seat, preceding
Level gear includes prime driving gear 4 and prime actively from wheel 5, rear class gear include rear class driving gear 6 and rear class actively from
Wheel 7, upper floating seat include upper floating seat I 8 and upper floating seat II 9, and middle floating seat includes middle floating seat I 10 and middle floating
Seat II 11；The axis of prime driving gear 4 is provided with rotary shaft I 12, and the both ends of rotary shaft I 12 are equipped with external splines 15, rotates
The right-hand member of axle I 12 reaches the outside of front pump cover 2, and rear class driving gear 6 is provided with rotary shaft II, the inner hollow of rotary shaft II,
And internal spline is provided with, the left end of rotary shaft I 12 is inserted in rotary shaft II, and external splines 15 and internal spline intermeshing, prime
Rotary shaft III 13 and rotary shaft IV 14 are respectively equipped with driven gear 5 and rear class driven gear 7；Upper floating seat and middle floating
A pair of circular holes 22 are equipped with seat, upper floating seat I 8 and upper floating seat II 9 are respectively provided at the left and right sides of the pump housing 1, and centre is floated
Seat I 10 and middle floating seat II 11 are arranged on the middle part of the pump housing 1, and the right-hand member of rotary shaft I 12 is inserted in the upside of floating seat I 8
Circular hole 22 in；The left end of rotary shaft II 13 is inserted in the circular hole 22 of the upside of floating seat II 9, and prime driving gear 4 is with after
Level driving gear 6 is separately positioned on floating seat I 8 and middle floating seat I 10, upper floating seat II 9 and II 11 groups of middle floating seat
Into interval in, the both ends of rotary shaft III 13 are respectively inserted into floating seat I 8 and the circular hole 22 of the downside of middle floating seat I 10,
And prime driven gear 5 is arranged in the interval of floating seat I 8 and middle floating seat I 10, the both ends of rotary shaft IV 14 are inserted respectively
Enter in the circular hole 22 of upper floating seat II 9 and the downside of middle floating seat II 11, and rear class driven gear 7 is arranged on floating seat
II 9 and middle floating seat II 11 interval in.
Further, outside framework oil seal 17 is provided between front pump cover 2 and rotary shaft I 12, is provided between rear pump cover 3 and the pump housing 1
Sealing ring 18.
Further, prime driving gear 4 and rotary shaft I 12, rear class driving gear 6 and rotary shaft II, prime driven tooth
Wheel 5 and rotary shaft III 13, and rear class driven gear 7 and rotary shaft IV 14 being cast integrally structure.
Further, prime driving gear 4 and prime driven gear 5, the rear class driving gear 6 and phase of rear class driven gear 7
Mutually engagement；Along along the perspective plane of axis, position relationship is prime driving gear 4 for prime driving gear 4 and rear class driving gear 6
Flank profil is located in the teeth groove of rear class driving gear 6, can reduce the abrasion between gear indirectly, increases the strength of pinion rotation.
Further, figure-three groove 16 is equipped with upper floating seat I 8 and upper floating seat II 9, is set in figure-three groove 16
There is figure-three sealing ring 19, and respectively between upper floating seat I 8 and front pump cover 2, upper floating seat II 9 and rear pump cover 3；Centre is floating
Dynamic seat II 11 is provided with 8-shaped groove, and 8-shaped sealing ring 20 is provided with 8-shaped groove, and positioned at middle floating seat I 10 with
Between between floating seat II 11.
Further, the inwall of circular hole 22 is provided with bushing 21.
Further, the side wall of prime driving gear 4 and prime driven gear 5 is floated with upper floating seat I 8 and centre respectively
Seat I 10 is brought into close contact；Rear class driving gear 6 and rear class driven gear 7 are tight with upper floating seat II 9 and middle floating seat II 11 respectively
Closely connected conjunction.
The course of work of the present utility model, after rotary shaft I 12 rotates, the concomitant rotation of prime driving gear 4, in external splines 15
Under the cooperation of internal spline, rear class driving gear 6 in rotary shaft II also concomitant rotation, then prime driven gear 5 and rear class
Driven gear 7 associated movement, conveys under the driving of prime driving gear 4 and rear class driving gear 6 to oil.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
With reference to specific features that the embodiment or example describe, structure, material live feature be contained in it is of the present utility model at least one
In embodiment or example.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or
Example.Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or example
In combine in an appropriate manner.
The utility model preferred embodiment disclosed above is only intended to help and illustrates the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, do not limit the embodiment that the utility model is only yet.Obviously, according to this specification
Content, can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain
Principle and practical application of the present utility model, so that skilled artisan can be best understood by and utilize this practicality
It is new.The utility model is only limited by claims and its four corner and equivalent.
Claims (7)
1. a kind of small impact gear-type oil pump, including the pump housing, it is characterised in that before the front side of the pump housing and rear side are respectively equipped with
Pump cover and rear pump cover, the inside of the pump housing is provided with prime gear, rear class gear, upper floating seat and middle floating seat, before described
Level gear includes prime driving gear and prime actively from wheel, the rear class gear include rear class driving gear and rear class actively from
Wheel, the upper floating seat include upper floating seat I and upper floating seat II, and the middle floating seat includes middle floating seat I and centre
Floating seat II；The prime driving gear axis is provided with rotary shaft I, and the both ends of the rotary shaft I are equipped with external splines, institute
The right-hand member for stating rotary shaft I reaches the outside of front pump cover, and the rear class driving gear is provided with rotary shaft II, the rotary shaft II
Inner hollow, and internal spline is provided with, the left end of rotary shaft I is inserted in rotary shaft II, and external splines and internal spline are mutual
Engage, rotary shaft III and rotary shaft IV are respectively equipped with the prime driven gear and rear class driven gear；The upper floating seat
With a pair of circular holes are equipped with middle floating seat, the upper floating seat I and upper floating seat II are respectively provided at the left and right sides of the pump housing,
The middle floating seat I and middle floating seat II are arranged on pump housing middle part, and the right-hand member of the rotary shaft I is inserted in floating
In the circular hole of the upside of seat I；The left end of the rotary shaft II is inserted in the circular hole of the upside of floating seat II, the prime driving tooth
Take turns and rear class driving gear is separately positioned on floating seat I and middle floating seat I, upper floating seat II and middle floating seat II forms
Interval in, the both ends of rotary shaft III are respectively inserted into floating seat I and the circular hole of the downside of middle floating seat I, and preceding
Level driven gear is arranged in the interval of floating seat I and middle floating seat I, and the both ends of rotary shaft IV are respectively inserted into floating
In dynamic seat II and the circular hole of the downside of middle floating seat II, and rear class driven gear is arranged on floating seat II and middle floating seat
In II interval.
2. a kind of small impact gear-type oil pump according to claim 1, it is characterised in that the front pump cover and rotary shaft I
Between be provided with outside framework oil seal, sealing ring is provided between the rear pump cover and the pump housing.
A kind of 3. small impact gear-type oil pump according to claim 1, it is characterised in that the prime driving gear and turn
Moving axis I, rear class driving gear and rotary shaft II, prime driven gear and rotary shaft III, and rear class driven gear and rotary shaft
IV equal being cast integrally structure.
4. a kind of small impact gear-type oil pump according to claim 1, it is characterised in that the prime driving gear is with before
Level driven gear, rear class driving gear and the intermeshing of rear class driven gear；The prime driving gear and rear class driving gear
Along along the perspective plane of axis, position relationship is located in the teeth groove of rear class driving gear for the flank profil of prime driving gear.
5. a kind of small impact gear-type oil pump according to claim 1, it is characterised in that the upper floating seat I and floating
Be equipped with figure-three groove on dynamic seat II, be provided with figure-three sealing ring in the figure-three groove, and respectively positioned at upper floating seat I and
Between front pump cover, upper floating seat II and rear pump cover；The middle floating seat II is provided with 8-shaped groove, in the 8-shaped groove
Provided with 8-shaped sealing ring, and between middle floating seat I and middle floating seat II.
6. a kind of small impact gear-type oil pump according to claim 1, it is characterised in that the inwall of the circular hole is provided with
Bushing.
7. a kind of small impact gear-type oil pump according to claim 1, it is characterised in that the prime driving gear is with before
The side wall of level driven gear is brought into close contact with upper floating seat I and middle floating seat I respectively；The rear class driving gear and rear class from
Moving gear is brought into close contact with upper floating seat II and middle floating seat II respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721031609.0U CN207145223U (en) | 2017-08-17 | 2017-08-17 | A kind of small impact gear-type oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721031609.0U CN207145223U (en) | 2017-08-17 | 2017-08-17 | A kind of small impact gear-type oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207145223U true CN207145223U (en) | 2018-03-27 |
Family
ID=61665774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721031609.0U Expired - Fee Related CN207145223U (en) | 2017-08-17 | 2017-08-17 | A kind of small impact gear-type oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207145223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757440A (en) * | 2018-05-25 | 2018-11-06 | 西北工业大学 | A kind of fixing bearing component for gear pump |
-
2017
- 2017-08-17 CN CN201721031609.0U patent/CN207145223U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757440A (en) * | 2018-05-25 | 2018-11-06 | 西北工业大学 | A kind of fixing bearing component for gear pump |
| CN108757440B (en) * | 2018-05-25 | 2020-06-30 | 西北工业大学 | Fixed bearing assembly for gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180327 Termination date: 20200817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |