CN108644110B - Internal gearing variable gear pump - Google Patents
Internal gearing variable gear pump Download PDFInfo
- Publication number
- CN108644110B CN108644110B CN201810308168.7A CN201810308168A CN108644110B CN 108644110 B CN108644110 B CN 108644110B CN 201810308168 A CN201810308168 A CN 201810308168A CN 108644110 B CN108644110 B CN 108644110B
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- Prior art keywords
- pump
- variable
- main shaft
- compensation plate
- gear
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Retarders (AREA)
Abstract
The invention discloses an internal gearing variable gear pump which comprises a main shaft, a pump front cover, a pump rear cover, a pump body, an external gear, an internal gear ring, an annular variable oil cylinder, a variable spring, a front variable isolation compensation plate and a rear variable isolation compensation plate. One end of the main shaft close to the pump front cover is rotatably arranged in the pump front cover through a rolling bearing; a variable spring is arranged close to the outer ring of the rolling bearing and coaxially arranged on the main shaft; the other side of the variable spring is provided with a partition plate, and the other side of the partition plate is provided with an internal gear; the front variable isolation compensation plate and the rear variable isolation compensation plate are respectively arranged on the inner sides of the front cover and the rear cover of the pump; the outer gear ring is arranged between the front variable isolation compensation plate and the rear variable isolation compensation plate. The variable-displacement internal gear pump realizes the variable purpose of the internal gear pump by arranging the variable spring and the annular variable oil cylinder, and has the advantages of strong pollution capacity, good self-absorption property, suitability for severe working conditions and the like.
Description
The invention relates to a divisional application of a patent with the application number of 201610163246X and the application date of 2016, 03 and 19, and the invention provides a 'variable gear pump with internal meshing'.
Technical Field
The invention relates to a hydraulic pump, in particular to an internal meshing variable gear pump, and belongs to the technical field of hydraulic parts.
Background
With the continuous development of the mechanical industry, hydraulic parts are also continuously updated. The gear pump is the hydraulic pressure power parts commonly used of a technology relatively ripe, uses more still external gear pump now, compares external gear pump, and internal gear pump still has output flow pulsation and has lower, the noise is littleer advantage except that the antipollution ability that external gear pump had is strong, self-suction nature is good, applicable in abominable operating mode etc. but the internal gear pump that the technology is ripe, especially internal gear variable gear pump has not appeared in the existing market.
Disclosure of Invention
In view of the above problems, the present invention provides an internal gear pump with variable capacity, which achieves the purpose of internal gear pump variable capacity by providing a series of adjustment structures.
The technical scheme adopted by the invention is as follows: the utility model provides an inner gearing variable gear pump, includes main shaft, pump protecgulum and pump back lid, the pump body, external gear and ring gear, annular variable hydro-cylinder, variable spring, preceding variable isolation compensating plate and back variable isolation compensating plate, its characterized in that: the pump front cover is arranged at the front end of the pump body through a bolt, and the pump rear cover is arranged at the rear end of the pump body through a bolt; one end of the main shaft close to the pump front cover is rotatably arranged in the pump front cover through a rolling bearing, a shaft seal is arranged on the outer side of the rolling bearing, and the inner side of the rolling bearing is axially fixed on a shaft shoulder of the main shaft through an inner ring of the rolling bearing; a variable spring is arranged close to the outer ring of the rolling bearing and coaxially arranged on the main shaft; the other side of the variable spring is provided with a partition plate, the other side of the partition plate is provided with an external gear, the center of the external gear is provided with a spline groove and is matched with a spline on the main shaft, and the external gear can axially move on the main shaft; the front variable isolation compensation plate and the rear variable isolation compensation plate are respectively arranged on the inner sides of the front cover and the rear cover of the pump, the front variable isolation compensation plate and the rear variable isolation compensation plate are mutually connected through a wedge, and the wedge is arranged on the rear variable isolation compensation plate through a fixing pin; the inner gear ring is arranged between the front variable isolation compensation plate and the rear variable isolation compensation plate and is meshed with the outer gear; the main shaft penetrates through the front variable isolation compensation plate and the rear variable isolation compensation plate respectively, and one end of the main shaft close to the rear cover of the pump is rotatably installed in the rear cover of the pump through a wear-resistant bearing; the pump rear cover is internally provided with an annular groove, the pump rear cover is provided with a variable control oil inlet and a variable control oil outlet, the variable control oil inlet is communicated with the annular groove, and the variable control oil outlet is communicated with the inside of the pump body; the annular variable oil cylinder is slidably mounted in an annular groove in the pump rear cover, and one side of the annular variable oil cylinder is attached to one side of the rear variable isolation compensation plate.
Furthermore, one end of the outer surface of the pump body is provided with an oil inlet, the other end of the outer surface of the pump body is provided with an oil outlet, and the oil inlet and the oil outlet are communicated with the inside of the pump body.
Furthermore, oil through ports are uniformly distributed on the outer circumference of the inner gear ring, the oil through ports are communicated with the inside of the pump body, and the axis of each oil through port is perpendicular to the axial direction of the inner gear ring.
Furthermore, sealing rings are arranged between the front variable isolation compensation plate and the rear variable isolation compensation plate and between the pump front cover and the pump rear cover.
Furthermore, a key groove is formed in one end, close to the pump front cover, of the main shaft.
Furthermore, the diameter of the central through hole of the front variable isolation compensating plate is larger than the outer diameter of the outer gear; the outer diameter of the partition plate is larger than that of the outer gear and smaller than the diameter of the central through hole of the front variable isolation compensation plate.
Due to the adoption of the technical scheme, the invention has the following advantages: the variable-displacement internal gear pump realizes the variable purpose of the internal gear pump by arranging the variable spring and the annular variable oil cylinder, and has the advantages of strong pollution capacity, good self-absorption property, suitability for severe working conditions and the like.
Drawings
Fig. 1 is a schematic perspective view of the overall assembly of the present invention.
Fig. 2 is a schematic perspective view of the pump front cover, the pump rear cover and the pump body of the present invention after being hidden.
Fig. 3 is a schematic perspective view of the pump front cover, the pump rear cover, the pump body, the annular variable cylinder, and the outer gear ring after being hidden in the present invention.
Fig. 4 is a schematic view of a three-dimensional structure of the pump with a front pump cover, a rear pump cover, a pump body, an annular variable cylinder, an outer gear ring and a front variable isolation compensation plate hidden.
Fig. 5 is a schematic perspective view of the spindle of the present invention.
Figure 6 is a schematic perspective view of a wedge of the present invention.
Reference numerals: 1-a main shaft; 2-pump front cover; 3-a pump body; 4-pump back cover; 5-shaft seal; 6-rolling bearings; 7-variable spring; 8-front variable isolation compensation plate; 9-inner gear ring; 10-rear variable isolation compensation plate; 11-a sealing ring; 12-an annular variable oil cylinder; 13-an external gear; 14-a wear-resistant bearing; 15-a wedge; 16-a separator; 101-a keyway; 102-splines; 301-an oil inlet; 302-oil outlet.
Detailed Description
The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, 2, 3, 4, 5, and 6, an internal gear pump includes a main shaft 1, a pump front cover 2, a pump rear cover 4, a pump body 3, an external gear 13, an internal gear 9, an annular variable cylinder 12, a variable spring 7, a front variable isolation compensating plate 8, and a rear variable isolation compensating plate 10, and is characterized in that: the pump front cover 2 is arranged at the front end of the pump body 3 through a bolt, and the pump rear cover 4 is arranged at the rear end of the pump body 3 through a bolt; one end of the main shaft 1 close to the pump front cover 2 is rotatably installed in the pump front cover 2 through a rolling bearing 6, a shaft seal 5 is arranged on the outer side of the rolling bearing 6, and the inner side of the rolling bearing 6 is axially fixed on a shaft shoulder of the main shaft 1 through an inner ring of the rolling bearing 6; a variable spring 7 is arranged close to the outer ring of the rolling bearing 6, and the variable spring 7 is coaxially arranged on the main shaft 1; a partition plate 16 is arranged on the other side of the variable spring 7, an external gear 13 is arranged on the other side of the partition plate 16, a spline groove is formed in the center of the external gear 13 and is matched with a spline 102 on the main shaft 1, and the external gear 13 can move axially on the main shaft 1; the front variable isolation compensation plate 8 and the rear variable isolation compensation plate 10 are respectively arranged on the inner sides of the pump front cover 2 and the pump rear cover 4, the front variable isolation compensation plate 8 and the rear variable isolation compensation plate 10 are mutually connected through a wedge 15, and the wedge 15 is arranged on the rear variable isolation compensation plate 10 through a fixing pin; the inner gear ring 9 is arranged between the front variable isolation compensation plate 8 and the rear variable isolation compensation plate 10 and is meshed with the outer gear 13; the main shaft 1 penetrates through the front variable isolation compensation plate 8 and the rear variable isolation compensation plate 10 respectively, and one end, close to the pump rear cover 2, of the main shaft 1 is rotatably installed in the pump rear cover 4 through a wear-resistant bearing 14; an annular groove is formed in the pump rear cover 4, a variable control oil inlet and a variable control oil outlet are formed in the outer surface of the pump rear cover 4, the variable control oil inlet is communicated with the annular groove, and the variable control oil outlet is communicated with the interior of the pump body 3; the annular variable oil cylinder 12 is slidably mounted in an annular groove in the pump rear cover 4, and one side of the annular variable oil cylinder 12 is attached to one side of the rear variable isolation compensation plate 10.
Further, an oil inlet 301 is formed in one end of the outer surface of the pump body 3, an oil outlet 302 is formed in the other end of the outer surface of the pump body 3, and both the oil inlet 301 and the oil outlet 302 are communicated with the inside of the pump body 3.
Furthermore, oil through ports are uniformly distributed on the outer circumference of the inner gear ring 9, the oil through ports are communicated with the inside of the pump body 3, and the axis of each oil through port is perpendicular to the axial direction of the inner gear ring 9.
Further, sealing rings 11 are arranged between the front variable isolation compensation plate 8 and the rear variable isolation compensation plate 10 and between the pump front cover 2 and the pump rear cover 4.
Furthermore, a key groove 101 is arranged at one end of the main shaft 1 close to the pump front cover 2.
Further, the diameter of the central through hole of the front variable isolation compensating plate 8 is larger than the outer diameter of the outer gear 13; the outer diameter of the partition plate 16 is larger than that of the outer gear 13 and smaller than that of the central through hole of the front variable isolation compensation plate 8.
The working principle of the invention is as follows: when the variable oil pump is used, control oil is introduced through the variable control oil inlet on the pump rear cover 4 to drive the internal annular variable oil cylinder 12, so that the internal gear 13 axially moves along the spline 102 on the main shaft 1 to change the meshing length of the external internal gear 13 and the internal gear 9, and the variable purpose is achieved. The oil which is led to the variable control oil inlet on the pump rear cover 4 is controlled according to a certain rule, so that the pump can reach different variable modes, and the variable control oil pump adapts to different working processes, and the application range of the gear pump is greatly expanded.
Claims (6)
1. The utility model provides an inside engaged variable gear pump, lid (4), the pump body (3), external gear (13) and ring gear (9), annular variable hydro-cylinder (12), variable spring (7), preceding variable isolation compensating plate (8) and back variable isolation compensating plate (10) behind main shaft (1), pump protecgulum (2) and the pump, its characterized in that: the pump front cover (2) is arranged at the front end of the pump body (3), and the pump rear cover (4) is arranged at the rear end of the pump body (3); one end of the main shaft (1) close to the pump front cover (2) is rotatably arranged in the pump front cover (2); a variable spring (7) is arranged close to the outer ring of the rolling bearing (6), and the variable spring (7) is coaxially arranged on the main shaft (1); a partition plate (16) is arranged on the other side of the variable spring (7), an external gear (13) is arranged on the other side of the partition plate (16), and the external gear (13) is movably connected with the main shaft (1) and can axially move on the main shaft (1); the front variable isolation compensation plate (8) and the rear variable isolation compensation plate (10) are respectively arranged on the inner sides of the pump front cover (2) and the pump rear cover (4), and the inner gear ring (9) is arranged between the front variable isolation compensation plate (8) and the rear variable isolation compensation plate (10) and is meshed with the outer gear (13); one end of the main shaft (1) close to the pump rear cover (2) is rotatably arranged in the pump rear cover (4); an annular groove is formed in the pump rear cover (4), the annular variable oil cylinder (12) is slidably mounted in the annular groove in the pump rear cover (4), and one side of the annular variable oil cylinder (12) is attached to one side of the rear variable isolation compensation plate (10);
the pump front cover (2) is mounted at the front end of the pump body (3) through bolts, the pump rear cover (4) is mounted at the rear end of the pump body (3) through bolts, and one end, close to the pump front cover (2), of the main shaft (1) is rotatably mounted inside the pump front cover (2) through a rolling bearing (6); a shaft seal (5) is arranged on the outer side of the rolling bearing (6), and the inner side of the rolling bearing (6) is axially fixed on a shaft shoulder of the main shaft (1) through an inner ring of the rolling bearing (6); the center of the external gear (13) is provided with a spline groove and is matched with a spline (102) on the main shaft (1), one end of the outer surface of the pump body (3) is provided with an oil inlet (301), the other end of the outer surface of the pump body is provided with an oil outlet (302), and the oil inlet (301) and the oil outlet (302) are communicated with the inside of the pump body (3); oil through holes are uniformly distributed in the outer circumference of the inner gear ring (9), the oil through holes are communicated with the inside of the pump body (3), and the axis of each oil through hole is perpendicular to the axial direction of the inner gear ring (9).
2. An internal gear pump of claim 1 wherein: the front variable isolation compensation plate (8) and the rear variable isolation compensation plate (10) are connected with each other through a wedge (15), the wedge (15) is installed on the rear variable isolation compensation plate (10) through a fixing pin, and the main shaft (1) penetrates through the front variable isolation compensation plate (8) and the rear variable isolation compensation plate (10) respectively.
3. An internal gear pump of claim 1 wherein: one end of the main shaft (1) close to the pump rear cover (4) is rotatably arranged in the pump rear cover (4) through a wear-resistant bearing (14); the outer surface of the pump rear cover (4) is provided with a variable control oil inlet and a variable control oil outlet, the variable control oil inlet is communicated with the annular groove, and the variable control oil outlet is communicated with the inside of the pump body (3).
4. An internal gear pump of claim 1 wherein: and sealing rings (11) are arranged between the front variable isolation compensating plate (8) and the rear variable isolation compensating plate (10) and the pump front cover (2) and the pump rear cover (4).
5. An internal gear pump of claim 1 wherein: one end of the main shaft (1) close to the pump front cover (2) is provided with a key groove (101).
6. An internal gear pump of claim 1 wherein: the diameter of the central through hole of the front variable isolation compensating plate (8) is larger than the outer diameter of the outer gear (13); the outer diameter of the partition plate (16) is larger than that of the outer gear (13) and smaller than that of a central through hole of the front variable isolation compensation plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810308168.7A CN108644110B (en) | 2016-03-19 | 2016-03-19 | Internal gearing variable gear pump |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810308168.7A CN108644110B (en) | 2016-03-19 | 2016-03-19 | Internal gearing variable gear pump |
| CN201610163246.XA CN105840490B (en) | 2016-03-19 | 2016-03-19 | A kind of internal messing gear pump with variable capacity |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610163246.XA Division CN105840490B (en) | 2016-03-19 | 2016-03-19 | A kind of internal messing gear pump with variable capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108644110A CN108644110A (en) | 2018-10-12 |
| CN108644110B true CN108644110B (en) | 2020-08-28 |
Family
ID=56588366
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810308168.7A Active CN108644110B (en) | 2016-03-19 | 2016-03-19 | Internal gearing variable gear pump |
| CN201610163246.XA Active CN105840490B (en) | 2016-03-19 | 2016-03-19 | A kind of internal messing gear pump with variable capacity |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610163246.XA Active CN105840490B (en) | 2016-03-19 | 2016-03-19 | A kind of internal messing gear pump with variable capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108644110B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2905094A (en) * | 1955-06-01 | 1959-09-22 | Carrier Corp | Automatically reversible positive displacement internal gear rotary pump |
| US3364868A (en) * | 1967-01-17 | 1968-01-23 | Koerper Engineering Associates | Rotary piston engine |
| US4492539A (en) * | 1981-04-02 | 1985-01-08 | Specht Victor J | Variable displacement gerotor pump |
| ITTO20020551A1 (en) * | 2002-06-26 | 2003-12-29 | Vhit Spa | VARIABLE DISPLACEMENT FLUID MACHINE ACCORDING TO PRESSURE |
| CN201218200Y (en) * | 2008-05-30 | 2009-04-08 | 上海通用汽车有限公司 | Displacement-variable inner-meshing rotor pump |
| CN102410212B (en) * | 2011-12-06 | 2015-01-21 | 张意立 | Tower spring compensation inner and outer gear wheel pump |
| DE102012019906B3 (en) * | 2012-10-11 | 2014-02-20 | Audi Ag | Gear control oil pump, particularly external gear control oil pump for internal combustion engine of motor vehicle, comprises two conveyor gears and spring elements designed such that latter conveyor gear is pushed in intermediate position |
| US9163628B2 (en) * | 2013-03-11 | 2015-10-20 | Imo Industries, Inc. | Self adjusting gear pump |
| CN204082528U (en) * | 2014-07-08 | 2015-01-07 | 南通恒好液压科技有限公司 | Novel internal messing gear pump with variable capacity |
-
2016
- 2016-03-19 CN CN201810308168.7A patent/CN108644110B/en active Active
- 2016-03-19 CN CN201610163246.XA patent/CN105840490B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105840490B (en) | 2018-06-22 |
| CN105840490A (en) | 2016-08-10 |
| CN108644110A (en) | 2018-10-12 |
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Effective date of registration: 20200806 Address after: 113 Zhuhai east road, Huai'an Economic and Technological Development Zone, Huai'an City, Jiangsu Province Applicant after: JIANGSU VIBO HYDRAULICS JOINT STOCK Co.,Ltd. Address before: 363999 Linxi Village, Lindun Industrial Zone, Changtai County, Zhangzhou City, Fujian Province Applicant before: CHANGTAI AIFEISHE MACHINERY TECHNOLOGY Co.,Ltd. |
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