CN201396274Y - Variable gear pump - Google Patents
Variable gear pump Download PDFInfo
- Publication number
- CN201396274Y CN201396274Y CN2009201472748U CN200920147274U CN201396274Y CN 201396274 Y CN201396274 Y CN 201396274Y CN 2009201472748 U CN2009201472748 U CN 2009201472748U CN 200920147274 U CN200920147274 U CN 200920147274U CN 201396274 Y CN201396274 Y CN 201396274Y
- Authority
- CN
- China
- Prior art keywords
- concave arc
- arc surface
- gear
- driven gear
- surface light
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Abstract
The utility model discloses a variable gear pump comprising a pump case; a transmission shaft and a drive gear thereof; a transmission shaft and a driven gear thereof, which is characterized in that the an oil seal head and a concave arc surface smooth wheel are respectively arranged on two ends of the driven gear and the driven gear. The driven gear shifts along the axial direction. The drive gear and the driven gear are engaged. Or when the drive gear is engaged with the driven gear, a part of the drive gear fits the concave arc surface of the concave arc surface smooth wheel of the driven gear and a part of the driven gear fits the concave arc surface of the concave arc surface smooth wheel of the drive gear. The utility model changes the engagement length of two gears through the axialmovement of the driven gear, thus the working volume changes and accordingly the output flow of the gear pump changes.
Description
Technical field:
The utility model relates to hydraulic machinery, relates to hydraulic gear pump specifically.
Background technique:
At present, gear pump is widely used in industries such as engineering machinery, farm machinery, building machinery because of its advantage such as simple in structure, cheap, easy to maintenance, but the immutable shortcoming of gear pump discharge capacity, has limited the application area of gear pump.
Summary of the invention:
The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of and can realize the gear pump that discharge capacity is variable according to need of work.
The utility model is achieved through the following technical solutions:
A kind of gear pump with variable capacity comprises pump case, transmission shaft and driving gear thereof, transmission shaft and driven gear thereof, and characteristics are that the two ends of driving gear, driven gear are respectively arranged with oil sealing head and concave arc surface light face wheel; Driven gear carries out displacement vertically, driving gear and driven gear engagement, or the engagement of driving gear and driven gear the time, the concave arc surface of the concave arc surface light face wheel of the part of driving gear and driven gear coincide, the part of driven gear is identical with the concave arc surface that the concave arc surface light face of driving gear is taken turns.The concave arc surface light face wheel outer end of driven gear is connected with the shift fork seat.
The utility model moves axially by driven gear, thereby changes two gear meshing length, and swept volume is changed, and reaches the discharge capacity increase and decrease, and correspondingly the gear pump output flow changes, and has realized Variable quantity.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is Figure 1A-A cross-sectional schematic.
Fig. 3 is Figure 1B-B cross-sectional schematic.
Embodiment:
As shown in Figure 1, the utility model comprises pump case 1, transmission shaft and driving gear 2 thereof, transmission shaft and driven gear 3 thereof.Still as shown in Figure 1, the two ends of driving gear 2, driven gear 3 are respectively arranged with oil sealing head 21,31, concave arc surface light face wheel 22,32.As shown in Figure 2, the concave arc radius of described concave arc surface light face wheel 22,32 equates with the radius of driving gear 2, driven gear 3 respectively.Concave arc surface light face wheel 22 is placed on the end transmission shaft of driving gear 2, both end faces are Spielpassung, the diameter of bore of concave arc surface light face wheel 22 be slightly larger than described transmission shaft diameter (with transmission shaft be Spielpassung, when transmission shaft rotated, concave arc surface light face takes turns 22 not to be changeed).Still as shown in Figure 1, the outer end axle of concave arc surface light face wheel 22 is provided with groove, and spacing annulus 23 embeds spacingly in the grooves (prevents that concave arc surface light face wheel 22 from moving vertically, causes both in conjunction with the end face leakage of oil.It is spacing also can position limit pin to be set on the axle of outer end).
As shown in Figure 3, driven gear 3 one ends be provided with concave arc surface light face wheel 32 be connected cylinder 33, concave arc surface light face wheel 32 is placed on the cylinder 33, the end that connects cylinder 33 is provided with limited impression, that spacing annulus 34 embeds is spacing in the grooves, and (or the end is provided with bearing and seat thereof, and bearing and seat thereof are blocked in concave arc surface light face and take turns 32 spacing.Prevent that concave arc surface light face wheel 32 from moving vertically, causes both in conjunction with the end face leakage of oil); Concave arc surface light face is taken turns 32 slightly larger in diameter in cylinder 33 diameters (when driven gear 3 and cylinder thereof 33 rotated, concave arc surface light face wheel 32 did not rotate).
Shown in Fig. 1,3, fixedly connected with shift fork seat 4 in the outer end of concave arc surface light face wheel 32, and the shift fork handle passes the hole (shift fork handle and the Kong Wei that passes the pump case setting thereof provide diagram) of pump case setting.Stir shift fork seat 4 by the shift fork handle, make driven gear 3 carry out displacement vertically, driving gear 2 and driven gear 3 engagements, or driving gear 2 is with driven gear 3 engagements the time, and it is identical that the concave arc surface of the concave arc surface light face wheel 32 of the part of driving gear 2 and driven gear 3 coincide, the part of driven gear 3 and the concave arc surface light face of driving gear 2 are taken turns 22 concave arc surface 24.
As shown in Figure 1, described oil sealing head 21,31 is fixed on an end end face of driving gear 2, driven gear 3 respectively, and is isometrical with driving gear 2, driven gear 3.Oil sealing head 21,31 circumference are provided with a circle groove, are respectively arranged with seal ring 211,311 in the groove, and sealing effect is better during use.
Claims (8)
1, a kind of gear pump with variable capacity, comprise pump case (1), transmission shaft and driving gear (2) thereof, transmission shaft and driven gear (3) thereof, it is characterized in that: the two ends of driving gear (2), driven gear (3) are respectively arranged with oil sealing head (21,31), concave arc surface light face wheel (22,32); Driven gear (3) carries out displacement vertically, driving gear (2) and driven gear (3) engagement, or the engagement of driving gear (2) and driven gear (3) time, the concave arc surface of the concave arc surface light face wheel (32) of the part of driving gear (2) and driven gear (3) coincide, the part of driven gear (3) is identical with the concave arc surface that the concave arc surface light face of driving gear (2) is taken turns (22).
2, a kind of gear pump with variable capacity as claimed in claim 1 is characterized in that: the concave arc radius of concave arc surface light face wheel (22,32) equates with the radius of driving gear (2), driven gear (3) respectively.
3, a kind of gear pump with variable capacity as claimed in claim 1 or 2, it is characterized in that: concave arc surface light face wheel (22) is placed on the end transmission shaft of driving gear (2), both end faces are Spielpassung, and the diameter of bore of concave arc surface light face wheel (22) is slightly larger than the diameter of described transmission shaft.
4, a kind of gear pump with variable capacity as claimed in claim 3 is characterized in that: the outer end axle of concave arc surface light face wheel (22) is provided with position limit pin or the outer end axle is provided with groove, and spacing annulus (23) embeds in the groove spacing.
5, a kind of gear pump with variable capacity as claimed in claim 1 or 2, it is characterized in that: driven gear (3) one ends be provided with concave arc surface light face wheel (32) be connected cylinder (33), concave arc surface light face wheel (32) is placed on the cylinder (33), the end that connects cylinder (33) is provided with limited impression, spacing annulus (34) embeds in the groove spacing, or the end is provided with bearing and seat thereof, and it is spacing that bearing and seat thereof are blocked in concave arc surface light face wheel (32); The slightly larger in diameter of concave arc surface light face wheel (32) is in cylinder (33) diameter.
6, a kind of gear pump with variable capacity as claimed in claim 5 is characterized in that: fixedly connected with shift fork seat (4) in the outer end of concave arc surface light face wheel (32), and shift fork handle (5) passes the hole that pump case (1) is provided with.
7, a kind of gear pump with variable capacity as claimed in claim 1 is characterized in that: described oil sealing head (21,31) is fixed on an end end face of driving gear (2), driven gear (3) respectively, and is isometrical with driving gear (2), driven gear (3).
8, a kind of gear pump with variable capacity as claimed in claim 7 is characterized in that: oil sealing head (21,31) circumference is provided with a circle groove, is respectively arranged with seal ring (211,311) in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201472748U CN201396274Y (en) | 2008-12-08 | 2009-04-08 | Variable gear pump |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820214721 | 2008-12-08 | ||
| CN200820214721.2 | 2008-12-08 | ||
| CN2009201472748U CN201396274Y (en) | 2008-12-08 | 2009-04-08 | Variable gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396274Y true CN201396274Y (en) | 2010-02-03 |
Family
ID=41618783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201472748U Expired - Fee Related CN201396274Y (en) | 2008-12-08 | 2009-04-08 | Variable gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396274Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121561A (en) * | 2010-06-04 | 2011-07-13 | 湖南机油泵股份有限公司 | Displacement-variable gear oil pump |
| CN104879298A (en) * | 2015-06-02 | 2015-09-02 | 西北工业大学 | Variable displacement gear pump |
| CN105782019A (en) * | 2016-05-04 | 2016-07-20 | 陈金祥 | Variable gear pump |
| CN106051108A (en) * | 2016-05-04 | 2016-10-26 | 陈金祥 | Variable gear pump type automobile stepless speed changer |
| CN106989013A (en) * | 2017-05-03 | 2017-07-28 | 哈尔滨理工大学 | It is a kind of to realize the gear pump with variable capacity of stepless speed regulation |
-
2009
- 2009-04-08 CN CN2009201472748U patent/CN201396274Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121561A (en) * | 2010-06-04 | 2011-07-13 | 湖南机油泵股份有限公司 | Displacement-variable gear oil pump |
| CN102121561B (en) * | 2010-06-04 | 2015-09-16 | 湖南机油泵股份有限公司 | Variable-displacement gear-type oil pump |
| CN104879298A (en) * | 2015-06-02 | 2015-09-02 | 西北工业大学 | Variable displacement gear pump |
| CN105782019A (en) * | 2016-05-04 | 2016-07-20 | 陈金祥 | Variable gear pump |
| CN106051108A (en) * | 2016-05-04 | 2016-10-26 | 陈金祥 | Variable gear pump type automobile stepless speed changer |
| CN106989013A (en) * | 2017-05-03 | 2017-07-28 | 哈尔滨理工大学 | It is a kind of to realize the gear pump with variable capacity of stepless speed regulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20110408 |