CN203847383U - Double circular-arc harmonic compound gear pump - Google Patents

Double circular-arc harmonic compound gear pump Download PDF

Info

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
Authority
CN
China
Prior art keywords
gear
driven
wheel
side plate
rigid
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.)
Expired - Fee Related
Application number
CN201420285817.3U
Other languages
Chinese (zh)
Inventor
李秀莲
刘伟
施晓芳
何庆
朱福先
王泽�
王江涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu University of Technology
Original Assignee
Jiangsu University of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu University of Technology filed Critical Jiangsu University of Technology
Priority to CN201420285817.3U priority Critical patent/CN203847383U/en
Application granted granted Critical
Publication of CN203847383U publication Critical patent/CN203847383U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a double circular-arc harmonic compound gear pump which comprises a pump body, a side plate, crescent-shaped plates and a gear set, wherein the gear set comprises a driving rigid gear, driven rigid gears and a flexible gear; the driving rigid gear and the driven rigid gears are double circular-arc outer gears; the driving rigid gear is meshed with the driven rigid gears; the flexible gear is arranged outside the driving rigid gear and the driven rigid gears in a sleeving way, is a flexible double circular-arc inner gear ring, and is meshed with the two driven rigid gears respectively; the crescent-shaped plats are filled between the flexible gear, the driving rigid gear and the driven rigid gears; a sealed working cavity is formed between the flexible gear, the driving rigid gear and the driven rigid gears and the side plate and the crescent-shaped plates, and is divided into four symmetric oil suction cavities and four symmetric pressure oil cavities by gear tooth meshing lines of the crescent-shaped plates and the side plate and the driving rigid gear, the driven rigid gears and the flexible gear. Compared with a conventional gear pump, the double circular-arc harmonic compound gear pump has the advantages of increasing the displacement, reducing vibration, lowering noise, prolonging the service life and increasing the pump pressure so as to have broad engineering application prospect.

Description

Two circular arc harmonic composite gear pumps
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.
CN201420285817.3U 2014-05-30 2014-05-30 Double circular-arc harmonic compound gear pump Expired - Fee Related CN203847383U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420285817.3U CN203847383U (en) 2014-05-30 2014-05-30 Double circular-arc harmonic 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 circular-arc harmonic compound gear pump

Publications (1)

Publication Number Publication Date
CN203847383U true CN203847383U (en) 2014-09-24

Family

ID=51560408

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420285817.3U Expired - Fee Related CN203847383U (en) 2014-05-30 2014-05-30 Double circular-arc harmonic compound gear pump

Country Status (1)

Country Link
CN (1) CN203847383U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994068A (en) * 2014-05-30 2014-08-20 江苏理工学院 Bi-arc harmonic compound gear pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994068A (en) * 2014-05-30 2014-08-20 江苏理工学院 Bi-arc harmonic compound gear pump

Similar Documents

Publication Publication Date Title
CN103291609B (en) Biaxial harmonic gear pump
CN201627714U (en) Gear pump with novel annular gear
CN203847383U (en) Double circular-arc harmonic compound gear pump
CN102644588A (en) Fluid pressure and mechanical energy converter
CN103291612B (en) Harmonic gear pump
CN203847381U (en) Double circular-arc harmonic gear pump
CN201902323U (en) Marine high-speed cycloid gear pump
CN201748136U (en) Two-in-one engine-oil pump
CN100392249C (en) Arc screw tooth shape of large flow double screw pump
CN202250817U (en) Low-noise dual-gear pump
CN202381323U (en) Cycloid pump for automatic transmission of car
CN103994068A (en) Bi-arc harmonic compound gear pump
CN201176930Y (en) Gear ring pump
CN215633740U (en) Gear pump casing, gear pump and oil supply system
CN201228635Y (en) Low-pressure high flow rate composite gear pump
CN106989011A (en) External toothing button pump
CN105626514A (en) Novel difunctional gear pump
CN201636004U (en) High temperature hydraulic pump with planetary gear
CN105952637A (en) Large displacement high pressure gear pump with driving and driven wheels in different sizes
CN201225280Y (en) Internal gear pump
CN202833121U (en) Circular gear pump
CN202194824U (en) Oil supply device integrated with large discharge pump motor
CN103291610A (en) Quadruple-action harmonic gear pump
CN200961576Y (en) Linearly conjugated inside engaged gear pump
CN2537835Y (en) Double screw pump

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