CN203847383U - Double-arc harmonic wave compound gear pump - Google Patents
Double-arc harmonic wave compound gear pump Download PDFInfo
- Publication number
- CN203847383U CN203847383U CN201420285817.3U CN201420285817U CN203847383U CN 203847383 U CN203847383 U CN 203847383U CN 201420285817 U CN201420285817 U CN 201420285817U CN 203847383 U CN203847383 U CN 203847383U
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- Prior art keywords
- gear
- wheel
- driven
- rigid wheel
- flexbile gear
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- 150000001875 compounds Chemical class 0.000 title abstract 2
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 238000005086 pumping Methods 0.000 claims description 14
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 3
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 239000012530 fluid Substances 0.000 description 4
- 230000010349 pulsation Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000021615 conjugation Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The utility model relates to a compound gear pump of biarc harmonic, which comprises a pump body, a side plate, crescent moon board and gear train, the gear train includes the initiative rigid wheel, driven rigid wheel and flexbile gear, initiative rigid wheel and driven rigid wheel are the biarc external gear, initiative rigid wheel meshes with driven rigid wheel mutually, the flexbile gear cover is established outside initiative rigid wheel and driven rigid wheel, the flexbile gear is flexible biarc ring gear, the flexbile gear meshes with two driven rigid wheels mutually respectively, the crescent moon board is filled at the flexbile gear, the initiative rigid wheel, between the driven rigid wheel, the flexbile gear, the initiative rigid wheel, driven rigid wheel and curb plate, form sealed working chamber between the crescent moon board, curb plate and initiative rigid wheel, driven rigid wheel, the teeth of a cogwheel meshing line of flexbile gear will seal the working chamber and separate into the oil absorption chamber of four symmetries and the pressure oil chamber. Compared with the existing gear pump, the double-circular-arc harmonic composite gear pump has the advantages of increasing the discharge capacity, reducing vibration, reducing noise, prolonging the service life and improving the pump pressure, thereby having wider engineering application prospect.
Description
Technical field
The utility model relates to oil hydraulic pump technical field, especially a kind of pair of circular arc harmonic composite gear pump.
Background technique
Oil hydraulic pump is to rely on the variation of the volume in seal operation space to realize suction liquid.Gear pump is that a kind of utilization is sealed in pitch wheel in housing and the oil hydraulic pump of working.
Gear pump at present used, due to reasons in structure, only has an oil sucting cavity and a pumping cavity, thereby exists the defects such as radial force imbalance, flow pulsation is large, vibration is large, noise is high, volumetric efficiency is low.For the defect of gear pump, people have carried out a series of research work.A large amount of researchs show, although take rational structural design to reduce to a certain extent radial hydraulic pressure, reduce flow pulsation, improve volumetric efficiency, extend life-span of gear pump, still can not tackle the problem at its root.
Although existing harmonic gear pump can solve the unbalanced problem of radial force, because reasons in structure still exists, pump pressure is little, the defects such as gear teeth fatigue strength deficiency of flexbile gear.Therefore, be necessary very much the gear pump of development of new.
Model utility content
The technical problems to be solved in the utility model is: two circular arc harmonic composite gear pumps that can increase discharge capacity in order to provide a kind of, reduce flow pulsation, reduce vibration and noise, life-saving, raising pump pressure.
The utility model solves the technological scheme that its technical problem adopts: a kind of pair of circular arc harmonic composite gear pump, comprise the pump housing, side plate, swing link and gear train, described gear train comprises initiatively just wheel, driven firm wheel and flexbile gear, top has just been taken turns in described active and bottom is respectively arranged with driven firm wheel, described active has just been taken turns and driven firm wheel is two circular arc external gears, initiatively just wheel is meshed with driven firm wheel, described flexbile gear is set in outside the firm wheel of active and driven firm wheel, flexbile gear is flexible two circular arc ring gear, flexbile gear is meshed with two driven firm wheels respectively, described swing link is filled in flexbile gear, initiatively just take turns, between driven firm wheel, flexbile gear, initiatively just take turns, driven firm wheel and side plate, between swing link, form pressurization working lumen, swing link, side plate is just taken turns with active, driven firm wheel, the gear teeth meshing line of flexbile gear is separated into four symmetrical oil sucting cavities and four symmetrical pumping cavities by pressurization working lumen.
Described side plate comprises front side plate and back side panel, and front side plate, back side panel are arranged on described gear train both sides.
Described swing link is fixed on side plate by some locating studs.
Described active just wheel is connected by flat key and driving shaft, and described driven firm wheel is connected by flat key and driven shaft, initiatively just takes turns, the facewidth of driven firm wheel and flexbile gear equates, has initiatively just taken turns and the center line of flexbile gear coincides.
The utility model is incorporated into one by the advantage of harmonic gear, Novikov gears with double circular arc tooth profiles and gear pump, is specially:
1) flow large, pulse little, vibrate little, noise is low, balanced radial force.In Harmonic Gears process, the gear teeth meshing line of swing link, side plate and initiatively firm wheel, driven firm wheel, flexbile gear is separated into four symmetrical oil sucting cavity m and four symmetrical pumping cavity n by sealing active chamber.Increasing of oil sucting cavity and pumping cavity, causes flow obviously to increase, i.e. initiatively just wheel rotation 1 week, and by the flow of discharging four times, and flow pulsation will further reduce, thus vibration is less, noise is lower; And because the radial force that pumping cavity produces is cancelled out each other, solved balanced radial force problem.
2) torsional stiffness of flexbile gear and intensity improve.Because the gear tooth profile of wheel, driven firm wheel and flexbile gear initiatively just all adopts double circular arc tooth shape, initiatively just the gear tooth profile of wheel, driven firm wheel and flexbile gear has respectively the wide and recessed flank profil of double wedge simultaneously; When the firm wheel of active and driven firm wheel engagement driving, double circular arc tooth shape not only guaranteed initiatively just the flank profil of wheel and driven firm wheel in engagement driving process all the time in conjugate movement state, but also due to initiatively just the double wedge of wheel exterior feature and recessed flank profil respectively and the recessed flank profil of driven firm wheel and double wedge exterior feature mesh simultaneously and exist between biconjugate meshing zone.
In like manner, when driven firm wheel and flexbile gear engagement driving, the flank profil that double circular arc tooth shape has not only guaranteed driven firm wheel and flexbile gear in engagement driving process all the time in conjugate movement state, but also due to the double wedge of driven firm wheel is wide and recessed flank profil respectively and the recessed flank profil of flexbile gear and double wedge exterior feature mesh simultaneously and exist between biconjugate meshing zone.The existence of biconjugate meshing zone has improved torsional stiffness and the intensity of flexbile gear greatly.
The raising of the releasing of radial hydraulic pressure and flexbile gear torsional stiffness and intensity, will extend the working life of gear pump greatly.
The beneficial effects of the utility model are: the two circular arc harmonic composite gear pumps of the utility model are compared with existing gear pump, there is the discharge capacity of increase, reduce to vibrate, reduce noise, life-saving and improve pump pressure, thereby there is more wide future in engineering applications.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the perspective view of a preferred embodiment of the two circular arc harmonic composite gear pumps of the utility model;
In figure: 1. locating stud, 2. locating stud, the 3. pump housing, 4. driven shaft, 5. side plate, 6. flat key, 7. screw, 8. swing link, 9. flexbile gear, 10. just wheel initiatively, 11. driving shafts, 12. driven firm wheels.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model is only described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Figure 1, a kind of pair of circular arc harmonic composite gear pump, comprise the pump housing 3, side plate 5, swing link 8 and gear train, described gear train comprises initiatively just wheel 10, driven firm wheel 12 and flexbile gear 9, described active has just been taken turns 10 tops and bottom and has been respectively arranged with driven firm wheel 12, the firm wheel 10 of described active and driven firm wheel 12 are two circular arc external gears, initiatively just wheel 10 is meshed with driven firm wheel 12, described flexbile gear 9 is set in outside the firm wheel 10 of active and driven firm wheel 12, flexbile gear 9 is flexible two circular arc ring gear, flexbile gear 9 is meshed with two driven firm wheels 12 respectively, described swing link 8 is filled in flexbile gear 9, initiatively just take turns 10, between driven firm wheel 12, flexbile gear 9, initiatively just take turns 10, driven firm wheel 12 and side plate 5, between swing link 8, form pressurization working lumen, swing link 8, side plate 5 takes turns 10 with initiatively firm, driven firm wheel 12, the gear teeth meshing line of flexbile gear 9 is separated into four symmetrical oil sucting cavity m and four symmetrical pumping cavity n by pressurization working lumen.
Of the present utility model pair of circular arc harmonic composite gear pump is mainly by initiatively just wheel 10, driven firm wheel 12, flexbile gear 9, swing link 8, the pump housing 3, side plate 5, driving shaft 11, driven shaft 4 form.
Initiatively just wheel 10 is connected by flat key 6 with driving shaft 11, and initiatively just wheel 10 is the two circular arc external gears of rigidity, has recessed flank profil and double wedge wide on gear tooth profile simultaneously.
Driven firm wheel 12 is connected by flat key 6 with driven shaft 4, and driven firm wheel 12 is also the two circular arc external gears of rigidity, has recessed flank profil and double wedge wide on gear tooth profile simultaneously.
Flexbile gear 9, for having two circular arc ring gears of certain flexible flexibility, thin-walled, activity, has double wedge exterior feature and recessed flank profil simultaneously on gear tooth profile.
Initiatively just the facewidth of wheel 10, driven firm wheel 12 and flexbile gear 9 equates, initiatively just the center line of wheel 10 and flexbile gear 9 overlaps.
Locating stud 1 and screw 7 are fixing for the pump housing 3.
In transmission process, initiatively just the double wedge of wheel 10 exterior feature and recessed flank profil mesh with recessed flank profil and the double wedge exterior feature of driven firm wheel 12 respectively simultaneously, thereby form between two conjugation meshing zones.
In transmission process, the double wedge of driven firm wheel 12 exterior feature and recessed flank profil mesh with recessed flank profil and the double wedge exterior feature of flexbile gear 9 respectively simultaneously, thereby form between two conjugation meshing zones.
The existence of biconjugate meshing zone has improved torsional stiffness and the intensity of flexbile gear greatly, solved the problem of flexbile gear insufficient rigidity in existing Harmonic Gears, improve the torsional stiffness of harmonic gear, thereby extended the working life and the working pressure that has improved gear pump of gear pump.
Swing link 8 is between the tooth top of the firm wheel 10 of active, driven firm wheel 12 and flexbile gear 9, and the pin 2 that is positioned is fixed on side plate 5.
Side plate 5 is divided into two of front and back, is fixed on initiatively the just both sides, front and back of wheel 10, driven firm wheel 12 and flexbile gear 9.
Feature based on harmonic gear engagement driving, initiatively just wheel 10 and driven firm wheel 12, flexbile gear 9, swing link 8, side plate 5 form the oil pocket of 8 sealings altogether, i.e. four oil sucting cavity m and four pumping cavity n, and be arranged symmetrically; Because oil sucting cavity and pumping cavity are symmetrical between two, the radial hydraulic pressure therefore acting on transmission shaft is cancelled out each other, thereby has reduced bearing load, has improved the working life of gear pump.
Working principle of the present utility model is as follows: when motor clockwise rotates, by driving shaft 11, drive initiatively just wheel 10 to rotate, initiatively just taken turns 10 by the engagement driving with driven firm wheel 12, drive driven firm wheel 12 to rotate, driven firm wheel 12, by the engagement driving with flexbile gear 9, drives flexbile gear 9 to rotate.
The source of nibbling at the firm wheel 10 of active with driven firm wheel 12 gear teeth, between cog Seal cage becomes greatly gradually, forms parital vacuum, and fluid is under atmospheric effect, and the oil inlet hole on front-end bearing pedestal enters into two oil sucting cavity m that are arranged symmetrically, and completes oil-absorbing process.Meanwhile, the source of nibbling at driven firm wheel 12 with flexbile gear 9 gear teeth, it is large that between cog Seal cage also becomes gradually, forms parital vacuum, and fluid is under atmospheric effect, and the oil inlet hole on front-end bearing pedestal enters into two oil sucting cavity m that are arranged symmetrically, and completes oil-absorbing process.Be whole oil-absorbing process, will form four oil sucting cavities that are arranged symmetrically with.
, there are two pumping cavity n that are arranged symmetrically with at engaging-in place at the firm wheel 10 of active with driven firm wheel 12 gear teeth, and takes turns 10 continue rotation along with active is firm, pumping cavity n diminishes gradually, and the fluid that sucks between cog is extruded, the oil outlet on rear bearing block, pressure oil output, completes oil extraction process.Meanwhile,, there are two pumping cavity n that are arranged symmetrically with at the engaging-in place at driven firm wheel 12 with flexbile gear 9 gear teeth, along with the rotation of driven firm wheel 12, pumping cavity n diminishes gradually, and the fluid that sucks between cog is extruded, oil outlet on rear bearing block, pressure oil output, completes oil extraction process.Therefore whole oil extraction process, will form four pumping cavities that are arranged symmetrically with.
Along with motor ceaselessly turns round, suction oil process is carried out again and again.
The two circular arc harmonic composite gear pumps of the utility model are compared with existing gear pump, have advantages of the discharge capacity of increase, reduce to vibrate, reduce noise, life-saving and improve pump pressure, thereby have more wide future in engineering applications.
The above-mentioned foundation desirable embodiment of the present utility model of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this model utility technological thought, carry out various change and modification completely.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to claim scope.
Claims (6)
1. a two circular arc harmonic composite gear pump, comprise the pump housing, side plate, swing link and gear train, it is characterized in that: described gear train comprises initiatively just wheel, driven firm wheel and flexbile gear, top has just been taken turns in described active and bottom is respectively arranged with driven firm wheel, described active has just been taken turns and driven firm wheel is two circular arc external gears, initiatively just wheel is meshed with driven firm wheel, described flexbile gear is set in outside the firm wheel of active and driven firm wheel, flexbile gear is flexible two circular arc ring gear, flexbile gear is meshed with two driven firm wheels respectively, described swing link is filled in flexbile gear, initiatively just take turns, between driven firm wheel, flexbile gear, initiatively just take turns, driven firm wheel and side plate, between swing link, form pressurization working lumen, swing link, side plate is just taken turns with active, driven firm wheel, the gear teeth meshing line of flexbile gear is separated into four symmetrical oil sucting cavities and four symmetrical pumping cavities by pressurization working lumen.
2. as claimed in claim 1 pair of circular arc harmonic composite gear pump, is characterized in that: described side plate comprises front side plate and back side panel, and front side plate, back side panel are arranged on described gear train both sides.
3. as claimed in claim 1 pair of circular arc harmonic composite gear pump, is characterized in that: described swing link is fixed on side plate by some locating studs.
4. as claimed in claim 1 pair of circular arc harmonic composite gear pump, is characterized in that: described active just wheel is connected by flat key and driving shaft, and described driven firm wheel is connected by flat key and driven shaft.
5. as claimed in claim 1 pair of circular arc harmonic composite gear pump, is characterized in that: described active is just taken turns, the facewidth of driven firm wheel and flexbile gear equates.
6. as claimed in claim 1 pair of circular arc harmonic composite gear pump, is characterized in that: described active just wheel coincides with the center line of flexbile gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420285817.3U CN203847383U (en) | 2014-05-30 | 2014-05-30 | Double-arc harmonic wave compound gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420285817.3U CN203847383U (en) | 2014-05-30 | 2014-05-30 | Double-arc harmonic wave compound gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847383U true CN203847383U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420285817.3U Expired - Fee Related CN203847383U (en) | 2014-05-30 | 2014-05-30 | Double-arc harmonic wave compound gear pump |
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| Country | Link |
|---|---|
| CN (1) | CN203847383U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994068A (en) * | 2014-05-30 | 2014-08-20 | 江苏理工学院 | Double-arc harmonic wave compound gear pump |
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2014
- 2014-05-30 CN CN201420285817.3U patent/CN203847383U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994068A (en) * | 2014-05-30 | 2014-08-20 | 江苏理工学院 | Double-arc harmonic wave compound gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20160530 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |