CN105041639A - External gearing variable gear pump - Google Patents
External gearing variable gear pump Download PDFInfo
- Publication number
- CN105041639A CN105041639A CN201510534079.0A CN201510534079A CN105041639A CN 105041639 A CN105041639 A CN 105041639A CN 201510534079 A CN201510534079 A CN 201510534079A CN 105041639 A CN105041639 A CN 105041639A
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- gear
- rear end
- end cover
- platen
- driven
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Abstract
The invention discloses an external gearing variable gear pump which comprises a front end cover, a pump body, a rear end cover, a driving shaft, a driving gear large platen, a driving gear small platen, a driving gear, a driven shaft, a driven gear large platen, a driven gear small platen, a driven gear, a disc spring and a variable control annular oil cylinder. The front end cover and the rear end cover are fixedly arranged on the left side and the right side of the pump body respectively. The driving gear large platen is attached to the inner surface of the front end cover. The driving gear is in key joint with the driving shaft. The driving gear small platen is attached to one side of the driving gear and the inner side of the rear end cover. The driven gear large platen is attached to the inner surface of the rear end cover. The driven gear is in key joint with the driven shaft. The driven gear small platen is attached to one side of the driven gear. The external gearing variable gear pump is simple in structure, and the variable function of the gear pump is achieved by changing the engaging length between the two gears through the arranged disc spring; and a semicircular face structure is adopted, so that the gear pump is compact in structure and low in cost.
Description
Technical field
The present invention relates to a kind of hydraulic power unit, be specifically related to a kind of outer gearing gear pump with variable capacity, belong to technical field of hydraulic mechanical equipment.
Background technique
In hydraulic control system, oil hydraulic pump has extremely important status as the heart of hydraulic system.And as gear pump, although there are many shortcomings, it has other superior function---extremely strong anti-pollution abilities not available for form pump.This makes it have irreplaceable status in less demanding field of hydraulic control.But, gear pump can not variable characteristics, make gear pump in the process used, can only carry out control system pressure by relief valve, this greatly increases the waste of energy undoubtedly in system standby process.Therefore a kind of gear pump that can realize variable function meets energy-saving and cost-reducing development principle.
Summary of the invention
For the problems referred to above, the invention provides a kind of outer gearing gear pump with variable capacity, it carrys out the flow of control gear pump by the length of action changed in gear pump between two gears, realizes the variable function of common gear pump.
The technological scheme that the present invention takes is: a kind of outer gearing gear pump with variable capacity, comprise front cover, the pump housing, rear end cover, driving shaft, the large platen of driving gear and the little platen of driving gear, driving gear, driven shaft, the large platen of driven gear and the little platen of driven gear, driven gear, disc spring, Variable Control annular cylinder, it is characterized in that: the described pump housing left and right sides is unenclosed construction, and left and right sides end face is provided with tapped hole; Described front cover and rear end cover end face surrounding are respectively arranged with front cover through hole and rear end cover through hole, and with the tapped hole one_to_one corresponding of the pump housing left and right sides, front cover and rear end cover are fixedly mounted on the pump housing left and right sides respectively by screw; Front cover center is respectively arranged with front cover driving shaft mounting hole and front cover driven shaft mounting hole, rear end cover center is respectively arranged with rear end cover driving shaft mounting hole and rear end cover driven shaft mounting hole, the axis of described front cover driving shaft mounting hole and rear end cover driving shaft mounting hole overlaps, and the axis of described front cover driven shaft mounting hole and rear end cover driven shaft mounting hole overlaps; Described both ends of main drive shaft is rotatably installed in front cover driving shaft mounting hole on front cover and rear end cover and rear end cover driving shaft mounting hole respectively; Described driven shaft two ends are rotatably installed in front cover driven shaft mounting hole on front cover and rear end cover and rear end cover driven shaft mounting hole respectively; The large platen of described driving gear is provided with through hole, and through hole through driving shaft, and fits with front cover internal surface; Described driving gear is connected with active axle key, and fits with the large platen of driving gear; The little platen of described driving gear is provided with through hole, through hole through driving shaft, and with driving gear side and rear end cover inside fit; The large platen of described driven gear is provided with through hole, and through hole through driven shaft, and fits with rear end cover internal surface; Described driven gear is connected with driven shaft key, and fits with the large platen of driven gear; The little platen of described driven gear is provided with through hole, and through hole through driven shaft, and fits with driven gear side; Described disc spring is arranged on driven shaft, and disc spring both sides fit inside little platen and front cover with driven gear respectively; Described Variable Control annular cylinder is arranged on driven shaft, and large platen and rear end cover fit both ends of the surface with driven gear respectively; The large platen of described driving gear and the large platen of driven gear are respectively arranged with driving gear large platen semi circular surface and the large platen semi circular surface of driven gear, driving gear large platen semi circular surface matches with the little platen circumferential surface of driven gear, and driven gear large platen semi circular surface matches with the little platen circumferential surface of driving gear; Driving gear is meshed with driven gear.
Further, before and after the described pump housing, both sides are respectively arranged with hydraulic fluid port.
Further, described driving shaft is provided with keyway near one end of front cover.
Owing to present invention employs technique scheme, the present invention has the following advantages: (1) structure of the present invention is simple, by being provided with disc spring and changing the length of action between two gears thus realizing the variable function of gear pump; (2) by being provided with semi circular surface structure, make gear pump structure of the present invention compact, cost is lower.
Accompanying drawing explanation
Fig. 1 is entirety assembling exploded perspective schematic diagram of the present invention.
Fig. 2 is entirety assembling exploded perspective front view of the present invention.
Fig. 3 is overall assembling perspective view in the present invention.
Fig. 4 is the assembling perspective view after hiding the pump housing in the present invention.
Fig. 5 is the perspective view after hiding the pump housing and rear end cover in the present invention.
Fig. 6 is the perspective view of front cover in the present invention.
Fig. 7 is the perspective view of the large platen of driving gear in the present invention.
Fig. 8 is the perspective view of middle pump body of the present invention.
Fig. 9 is the perspective view of rear end cover in the present invention.
Drawing reference numeral: 1-front cover; The 2-pump housing; 3-rear end cover; 4-driving shaft; The large platen of 5-driving gear; 6-driving gear; The little platen of 7-driving gear; 8-Variable Control annular cylinder; 9-driven shaft; 10-disc spring; The little platen of 11-driven gear; 12-driven gear; The large platen of 13-driven gear; 14-screw; 101-front cover through hole; 102-front cover driving shaft mounting hole; 103-front cover driven shaft mounting hole; 201-hydraulic fluid port; 202-tapped hole; 301-rear end cover through hole; 302-rear end cover driving shaft mounting hole; 303-rear end cover driven shaft mounting hole; 501-through hole; 502-semi circular surface.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, is used for explaining the present invention in this illustrative examples of inventing and explanation, but not as a limitation of the invention.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, a kind of outer gearing gear pump with variable capacity, comprise front cover 1, the pump housing 2, rear end cover 3, driving shaft 4, the large platen of driving gear 5 and the little platen of driving gear 7, driving gear 6, driven shaft 9, the large platen of driven gear 13 and the little platen 11 of driven gear, driven gear 12, disc spring 10, Variable Control annular cylinder 8, the pump housing 2 left and right sides is unenclosed construction, and left and right sides end face is provided with tapped hole 202.Front cover 1 and rear end cover 3 end face surrounding are respectively arranged with front cover through hole 101 and rear end cover through hole 301, and with tapped hole 202 one_to_one corresponding of the pump housing 2 left and right sides, front cover 1 and rear end cover 3 are fixedly mounted on the pump housing 2 left and right sides respectively by screw 14.Front cover 1 center is respectively arranged with front cover driving shaft mounting hole 102 and front cover driven shaft mounting hole 103, rear end cover 3 center is respectively arranged with rear end cover driving shaft mounting hole 302 and rear end cover driven shaft mounting hole 303, the axis of front cover driving shaft mounting hole 102 and rear end cover driving shaft mounting hole 302 overlaps, and the axis of front cover driven shaft mounting hole 103 and rear end cover driven shaft mounting hole 303 overlaps.Driving shaft 4 two ends are rotatably installed in front cover driving shaft mounting hole 102 on front cover 1 and rear end cover 3 and rear end cover driving shaft mounting hole 302 respectively.Driven shaft 9 two ends are rotatably installed in front cover driven shaft mounting hole 103 on front cover 1 and rear end cover 3 and rear end cover driven shaft mounting hole 303 respectively.The large platen 5 of driving gear is provided with through hole 501, and through hole 501 through driving shaft 4, and fits with front cover 1 internal surface.Driving gear 6 is connected with driving shaft 4 key, and fits with the large platen 5 of driving gear.The little platen 7 of driving gear is provided with through hole, through hole through driving shaft 4, and with driving gear 6 side and rear end cover 3 inside fit.The large platen 13 of driven gear is provided with through hole, and through hole through driven shaft 9, and fits with rear end cover 3 internal surface.Driven gear 6 is connected with driven shaft 9 key, and fits with the large platen 13 of driven gear.The little platen 11 of driven gear is provided with through hole, and through hole through driven shaft 9, and fits with driven gear 6 side.Disc spring 10 is arranged on driven shaft 9, and disc spring 10 both sides fit inside little platen 11 and front cover 1 with driven gear respectively.Variable Control annular cylinder 8 is arranged on driven shaft 9, and large platen 13 and rear end cover 3 fit both ends of the surface with driven gear respectively.The large platen of driving gear 5 and the large platen of driven gear 13 are respectively arranged with driving gear large platen semi circular surface 502 and the large platen semi circular surface of driven gear, driving gear large platen semi circular surface 502 matches with driven gear little platen 11 circumferential surface, and driven gear large platen 13 semi circular surface matches with driving gear little platen 7 circumferential surface.Driving gear 6 is meshed with driven gear 12.
In order to realize the function of gear pump, before and after the pump housing 2, both sides are respectively arranged with hydraulic fluid port 201.In order to realize the input of power, described driving shaft 4 is provided with keyway near one end of front cover 1.
Working principle of the present invention is: the present invention is by the mesh volume between change driving gear 6 and driven gear 12 to change pump delivery, thus reaches the change realizing exporting fluid amount when input speed is certain.When gear air pump inoperative (namely external load is zero) time, due to the existence of disc spring 10 spring force, driven gear 12 part of the present invention is moved in end cap 3 direction backward, thus make the length of action S between driving gear 6 and driven gear 12 be in maximum rating, now gear pump delivery is maximum.When external loading change, when being got back to the oil liquid pressure increase of gear pump control chamber by hydraulic fluid port 201, under oil pressure effect, promote driven gear 12 to move in end cap 1 direction forward, compress disc spring simultaneously, thus the length of action S between driving gear 6 and driven gear 12 is reduced thereupon, the output of gear pump can be reduced.When the output of gear pump and the flow of system requirements reach balance, driven gear 6 rests on a certain position and reaches stable.When external load changes again, driven gear 6 is again mobile to reach new balance.
Claims (3)
1. an outer gearing gear pump with variable capacity, comprise front cover (1), the pump housing (2), rear end cover (3), driving shaft (4), the large platen of driving gear (5) and the little platen of driving gear (7), driving gear (6), driven shaft (9), the large platen of driven gear (13) and the little platen of driven gear (11), driven gear (12), disc spring (10), Variable Control annular cylinder (8), it is characterized in that: the described pump housing (2) left and right sides is unenclosed construction, and left and right sides end face is provided with tapped hole (202); Described front cover (1) and rear end cover (3) end face surrounding are respectively arranged with front cover through hole (101) and rear end cover through hole (301), and with tapped hole (202) one_to_one corresponding of the pump housing (2) left and right sides, front cover (1) and rear end cover (3) are fixedly mounted on the pump housing (2) left and right sides respectively by screw (14); Front cover (1) center is respectively arranged with front cover driving shaft mounting hole (102) and front cover driven shaft mounting hole (103), rear end cover (3) center is respectively arranged with rear end cover driving shaft mounting hole (302) and rear end cover driven shaft mounting hole (303), described front cover driving shaft mounting hole (102) and the axis of rear end cover driving shaft mounting hole (302) overlap, and described front cover driven shaft mounting hole (103) and the axis of rear end cover driven shaft mounting hole (303) overlap; Described driving shaft (4) two ends are rotatably installed in front cover driving shaft mounting hole (102) on front cover (1) and rear end cover (3) and rear end cover driving shaft mounting hole (302) respectively; Described driven shaft (9) two ends are rotatably installed in front cover driven shaft mounting hole (103) on front cover (1) and rear end cover (3) and rear end cover driven shaft mounting hole (303) respectively; The large platen of described driving gear (5) is provided with through hole (501), and through hole (501) through driving shaft (4), and fits with front cover (1) internal surface; Described driving gear (6) is connected with driving shaft (4) key, and fits with the large platen of driving gear (5); The little platen of described driving gear (7) is provided with through hole, and through hole through driving shaft (4), and fits with driving gear (6) side and rear end cover (3) inner side; The large platen of described driven gear (13) is provided with through hole, and through hole through driven shaft (9), and fits with rear end cover (3) internal surface; Described driven gear (6) is connected with driven shaft (9) key, and fits with the large platen of driven gear (13); The little platen of described driven gear (11) is provided with through hole, and through hole through driven shaft (9), and fits with driven gear (6) side; Described disc spring (10) is arranged on driven shaft (9), and little platen (11) and front cover (1) inner side fit with driven gear respectively in disc spring (10) both sides; Described Variable Control annular cylinder (8) is arranged on driven shaft (9), and large platen (13) and rear end cover (3) fit both ends of the surface with driven gear respectively; The large platen of described driving gear (5) and the large platen of driven gear (13) are respectively arranged with driving gear large platen semi circular surface (502) and the large platen semi circular surface of driven gear, driving gear large platen semi circular surface (502) matches with the little platen of driven gear (11) circumferential surface, and the large platen of driven gear (13) semi circular surface matches with the little platen of driving gear (7) circumferential surface; Driving gear (6) is meshed with driven gear (12).
2. a kind of outer gearing gear pump with variable capacity as claimed in claim 1, is characterized in that: before and after the described pump housing (2), both sides are respectively arranged with hydraulic fluid port (201).
3. a kind of outer gearing gear pump with variable capacity as claimed in claim 1, is characterized in that: described driving shaft (4) is provided with keyway near one end of front cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534079.0A CN105041639A (en) | 2015-08-27 | 2015-08-27 | External gearing variable gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534079.0A CN105041639A (en) | 2015-08-27 | 2015-08-27 | External gearing variable gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105041639A true CN105041639A (en) | 2015-11-11 |
Family
ID=54448514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510534079.0A Pending CN105041639A (en) | 2015-08-27 | 2015-08-27 | External gearing variable gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105041639A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697970A (en) * | 2016-04-08 | 2016-06-22 | 上海幸福摩托车有限公司 | Gear-type variable 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 |
| CN107061261A (en) * | 2017-04-30 | 2017-08-18 | 刘泽奎 | A kind of gear pump with variable capacity |
| CN109185123A (en) * | 2018-10-09 | 2019-01-11 | 宿迁学院 | It is a kind of can cogradient variable bending moment external gear rotary pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109203A (en) * | 1985-05-16 | 1987-06-03 | 杨德贵 | Move radially gear pump with variable capacity (motor) |
| CN1055795A (en) * | 1990-04-15 | 1991-10-30 | 河北机电学院 | Energy conversion mechanism for variable gear hydraulic system |
| CN2408267Y (en) * | 2000-03-06 | 2000-11-29 | 胡惊雷 | Variable hydraulic gear pump |
| US20040191103A1 (en) * | 2003-03-28 | 2004-09-30 | Alfred Gotschhofer | Gear pump |
| CN101029642A (en) * | 2007-04-11 | 2007-09-05 | 安致民 | Variable gear pump |
| CN101975161A (en) * | 2010-11-04 | 2011-02-16 | 奇瑞汽车股份有限公司 | Gear pump |
| EP1363025B1 (en) * | 2002-05-17 | 2011-07-06 | Schwäbische Hüttenwerke Automotive GmbH | Variable capacity pump |
-
2015
- 2015-08-27 CN CN201510534079.0A patent/CN105041639A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109203A (en) * | 1985-05-16 | 1987-06-03 | 杨德贵 | Move radially gear pump with variable capacity (motor) |
| CN1055795A (en) * | 1990-04-15 | 1991-10-30 | 河北机电学院 | Energy conversion mechanism for variable gear hydraulic system |
| CN2408267Y (en) * | 2000-03-06 | 2000-11-29 | 胡惊雷 | Variable hydraulic gear pump |
| EP1363025B1 (en) * | 2002-05-17 | 2011-07-06 | Schwäbische Hüttenwerke Automotive GmbH | Variable capacity pump |
| US20040191103A1 (en) * | 2003-03-28 | 2004-09-30 | Alfred Gotschhofer | Gear pump |
| CN101029642A (en) * | 2007-04-11 | 2007-09-05 | 安致民 | Variable gear pump |
| CN101975161A (en) * | 2010-11-04 | 2011-02-16 | 奇瑞汽车股份有限公司 | Gear pump |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697970A (en) * | 2016-04-08 | 2016-06-22 | 上海幸福摩托车有限公司 | Gear-type variable pump |
| CN106051108A (en) * | 2016-05-04 | 2016-10-26 | 陈金祥 | Variable gear pump type automobile stepless speed changer |
| CN107061261A (en) * | 2017-04-30 | 2017-08-18 | 刘泽奎 | A kind of gear pump with variable capacity |
| CN107061261B (en) * | 2017-04-30 | 2019-05-10 | 南京华纳机电设备制造有限公司 | A kind of gear pump with variable capacity |
| 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 |
| CN109185123A (en) * | 2018-10-09 | 2019-01-11 | 宿迁学院 | It is a kind of can cogradient variable bending moment external gear rotary pump |
| CN109185123B (en) * | 2018-10-09 | 2023-09-01 | 宿迁学院 | External gear pump capable of synchronizing variable torque |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151111 |
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| WD01 | Invention patent application deemed withdrawn after publication |