CN100545452C - A kind of crescent gear pump - Google Patents
A kind of crescent gear pump Download PDFInfo
- Publication number
- CN100545452C CN100545452C CNB2008101501365A CN200810150136A CN100545452C CN 100545452 C CN100545452 C CN 100545452C CN B2008101501365 A CNB2008101501365 A CN B2008101501365A CN 200810150136 A CN200810150136 A CN 200810150136A CN 100545452 C CN100545452 C CN 100545452C
- Authority
- CN
- China
- Prior art keywords
- external gear
- gear
- gain
- hole
- annular
- 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.)
- Active
Links
Images
Abstract
The present invention relates to a kind of crescent gear pump, comprise the pump housing (13), pump cover (8), transmission shaft (1), external gear (7) and and the internal gear (6) of external gear (7) engagement, external gear (7) is around being arranged on transmission shaft (1), transmission shaft (1), external gear (7), internal gear (6) all is arranged in the pump housing (13), corresponding external gear (7) locates to be provided with radial hole (17) in the transmission shaft (1), and with radial hole (17) connect can be axially fuel-displaced axial bore (16), be provided with the duct that transmission shaft (1) radial hole (17) is communicated with the pump housing (13) inner chamber in the external gear (7).The invention provides a kind of can be on transmission shaft in axial direction fuel-displaced crescent gear pump.
Description
Technical field
The present invention relates to a kind of pump-unit, relate in particular to a kind of crescent gear pump.
Background technique
Gear pump is a kind of oil hydraulic pump that extensively adopts in the hydraulic system, can be divided into external gear pump and crescent gear pump.Crescent gear pump is usually used in Newtonian liquid or the non Newtonian liquid in the industries such as transfer oil, chemical industry, coating, dyestuff, food, grease, medicine, carries the kind of liquid can be by lightweight, volatile liquid, until heavy, thickness, even semisolid liquid.Crescent gear pump is to adopt the theory of engagement in the gear, and inside and outside pitch circle is near on one side, and another side is separated by " swing link " on the pump cover.Active internal gear on the main shaft drives wherein that external gear rotates in the same way, is separated from each other at inlet's gear to form negative pressure and suck liquid, and gear constantly embeds engagement and with liquid extruding output in the outlet port.
Present crescent gear pump both domestic and external has a filler opening and oil outlet, be arranged in the radial direction of inside engaged gear into and out of hydraulic fluid port, oil inlet and outlet is connected so that oil-feed, oil extraction by threaded tube or flange plate, this inside engaged gear can only be realized radially oil extraction, and in the occasion of the axial oil extraction of needs, during as automobile gearbox lubricated, then can't be applied.
Summary of the invention
The present invention is in order to solve the above-mentioned technical problem that exists in the background technique, and a kind of can be on transmission shaft in axial direction fuel-displaced crescent gear pump is provided.
Technical solution of the present invention is: the present invention is a kind of crescent gear pump, comprise the pump housing 13, pump cover 8, transmission shaft 1, external gear 7 and and the internal gear 6 of external gear 7 engagements, external gear 7 is around being arranged on transmission shaft 1, transmission shaft 1, external gear 7, internal gear 6 all are arranged in the pump housing 13, its special way is: corresponding external gear 7 places are provided with radial hole 17 in the described transmission shaft 1, and with radial hole 17 connect can axially fuel-displaced axial bore 16, be provided with the duct that transmission shaft 1 radial hole 17 is communicated with the pump housing 13 inner chambers in the external gear 7.
Above-mentioned duct is included in hole or the groove 19 that axial direction that external gear 7 end faces are provided with is arranged, the circular groove 18 that do not communicate that makes hole or groove 19 and radial hole 17 connections that is provided with external gear 7 in.
The above-mentioned pump housing 13 is provided with different annular oil suction gain 22 of the radial dimension that does not communicate and annular oil extraction gain 23, and the smallest radial size requirement of annular oil extraction gain 23 should guarantee that annular oil extraction gain 23 communicates with the hole or the groove 19 of external gear 7; The smallest radial size requirement of annular oil suction gain 22 should guarantee that annular oil suction gain 23 does not communicate with the hole or the groove 19 of external gear 7.
Above-mentioned pump cover 8 is provided with different oil suction annular gain of the radial dimension that does not communicate and oil extraction annular gain, and the smallest radial size requirement of oil extraction annular gain should guarantee that oil extraction annular gain communicates with the hole or the groove 19 of external gear 7; The smallest radial size requirement of oil suction annular gain should guarantee that oil suction annular gain does not communicate with the hole or the groove 19 of external gear 7.
Above-mentioned hole or groove 19 are two or more.
Above-mentioned hole or groove 19 are arranged along external gear 7 circumferencial directions.
The above-mentioned pump housing 13 is provided with radially filler opening 20.
The above-mentioned pump housing 13 is provided with radially oil outlet 21.
The transmission shaft that the present invention is connected with external gear is provided with axial bore, be provided with the duct that the axial bore that makes transmission shaft is communicated with pump housing inner chamber in the external gear, therefore realized crescent gear pump in movement process axially fuel-displaced, can be to needs the operating mode etc. such as lubricate of axially fuel-displaced as automobile gearbox directly carry out fuel feeding.
Description of drawings
Fig. 1 is the structural representation of preferred embodiment of the present invention;
Fig. 2 is that the A of Fig. 1 is to view.
Embodiment
Referring to Fig. 1,2, the structure of a preferred embodiment of the present invention comprises transmission shaft 1, oil sealing 2,10, bonnet 3, needle bearing 4,12, key 5,11, internal gear 6, external gear 7, pump cover 8, protecgulum 9, the pump housing 13, pin 14, screw 15, axial bore 16, radial hole 17, the circular groove 18 that do not communicate, hole or groove 19, radially filler opening 20 and oil outlet 21 radially.The external gear 7 and the internal gear 6 of engagement are placed in the pump housing 13 that has swing link, by pin 14 and screw 15 pump cover 8 and the pump housing 13 are fused; Bearing 4 and bearing 12 embed respectively in the pump housing 13 and the pump cover 8; The moment of torsion of motor output is delivered on the axle 1 by key 11, moment of torsion on the axle 1 drives external gear 7 rotations by the effect of key 5, corresponding external gear 7 places are provided with radial hole 17 in the transmission shaft 1, and the axial bore 16 that connects with radial hole 17, be provided with the duct that radial direction is arranged at external gear 7 one end faces or both ends of the surface, this duct is hole or groove 19, and hole or groove 19 are two or more, and hole or groove 19 are arranged along external gear 7 circumferencial directions.The circular groove 18 that do not communicate that makes hole or groove 19 and radial hole 17 connections that in external gear 7, also is provided with.The pump housing 13 is provided with radially filler opening 20, also can be provided with radially oil outlet 21 on the pump housing 13.The pump housing 13 is provided with different annular oil suction gain of the radial dimension that does not communicate and annular oil extraction gain, and the smallest radial size requirement of annular oil extraction gain should guarantee that annular oil extraction gain communicates with the hole or the groove 19 of external gear 7; The smallest radial size requirement of annular oil suction gain should guarantee that annular oil suction gain does not communicate with the hole or the groove 19 of external gear 7.Pump cover 8 is provided with different oil suction annular gain of the radial dimension that does not communicate and oil extraction annular gain, and the smallest radial size requirement of oil extraction annular gain should guarantee that oil extraction annular gain communicates with the hole or the groove 19 of external gear 7; The smallest radial size requirement of oil suction annular gain should guarantee that oil suction annular gain does not communicate with the hole or the groove 19 of external gear 7.
When the present invention works, the moment of torsion of motor output is delivered on the transmission shaft 1 by key 11, moment of torsion on the transmission shaft 1 drives external gear 7 rotations by the effect of key 5, because external gear 7 and internal gear 6 are a kind of meshing relations, volume in the pump changes and makes oil pump pump fluid, the pump housing 13 and pump cover 8 are provided with suction, oil-discharging cavity in addition, so pump is with oil-feed continuously and oil extraction; The fluid of discharging can be discharged by the oil outlet 21 of radial direction, also can be by hole 19 that radial direction arranges and the circular groove 18 that do not communicate that is communicated with hole 19 be set on external gear 7 end faces, thus the radial hole 17 and the axial bore 16 that enter on the transmission shaft 1 are realized axial oil extraction.
Claims (8)
1, a kind of crescent gear pump, comprise the pump housing (13), pump cover (8), transmission shaft (1), external gear (7) and and the internal gear (6) of external gear (7) engagement, described external gear (7) is around being arranged on transmission shaft (1), described transmission shaft (1), external gear (7), internal gear (6) all is arranged in the pump housing (13), it is characterized in that: corresponding external gear (7) locates to be provided with radial hole (17) in the described transmission shaft (1), and with radial hole (17) connect can be axially fuel-displaced axial bore (16), be provided with the duct that transmission shaft (1) radial hole (17) is communicated with the pump housing (13) inner chamber in the described external gear (7).
2, crescent gear pump according to claim 1, it is characterized in that: described duct is included in hole or the groove (19) that axial direction that external gear (7) end face is provided with is arranged, the circular groove that do not communicate (18) that makes hole or groove (19) and radial hole (17) connection that is provided with external gear (7) in.
3, crescent gear pump according to claim 2, it is characterized in that: the described pump housing (13) is provided with different annular oil suction gain of the radial dimension that does not communicate (22) and annular oil extraction gain (23), and the smallest radial size requirement of annular oil extraction gain (23) should guarantee that annular oil extraction gain (23) communicates with the hole or the groove (19) of external gear (7); The smallest radial size requirement of annular oil suction gain (22) should guarantee that annular oil suction gain (22) does not communicate with the hole or the groove (19) of external gear (7).
4, crescent gear pump according to claim 2, it is characterized in that: described pump cover (8) is provided with different oil suction annular gain of the radial dimension that does not communicate and oil extraction annular gain, and the smallest radial size requirement of oil extraction annular gain should guarantee that oil extraction annular gain communicates with the hole or the groove (19) of external gear (7); The smallest radial size requirement of oil suction annular gain should guarantee that oil suction annular gain does not communicate with the hole or the groove (19) of external gear (7).
5, according to claim 2 or 3 or 4 described crescent gear pumps, it is characterized in that: described hole or groove (19) are two or more.
6, crescent gear pump according to claim 5 is characterized in that: described hole or groove (19) are arranged along external gear (7) circumferencial direction.
7, crescent gear pump according to claim 5 is characterized in that: the described pump housing (13) is provided with radially filler opening (20).
8, crescent gear pump according to claim 7 is characterized in that: the described pump housing (13) is provided with radially oil outlet (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101501365A CN100545452C (en) | 2008-06-26 | 2008-06-26 | A kind of crescent gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101501365A CN100545452C (en) | 2008-06-26 | 2008-06-26 | A kind of crescent gear pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101315076A CN101315076A (en) | 2008-12-03 |
| CN100545452C true CN100545452C (en) | 2009-09-30 |
Family
ID=40106196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008101501365A Active CN100545452C (en) | 2008-06-26 | 2008-06-26 | A kind of crescent gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100545452C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846236B (en) * | 2010-03-03 | 2013-01-02 | 南京腾源机械制造有限公司 | Lubricating pump, pump body and pump cover thereof |
| CN101846070A (en) * | 2010-06-08 | 2010-09-29 | 宁波市镇海邵氏超越离合器制造有限公司 | Internal gear pump |
| CN102312832A (en) * | 2011-08-25 | 2012-01-11 | 成都航天烽火精密设备制造有限责任公司 | Transfer pump of high viscosity fluid |
| CN103291609B (en) * | 2012-02-24 | 2016-01-20 | 常州大学 | Biaxial harmonic gear pump |
| CN106015167A (en) * | 2016-07-13 | 2016-10-12 | 哈威油液压技术（上海）有限公司 | Hydraulic pump station of gear pump |
-
2008
- 2008-06-26 CN CNB2008101501365A patent/CN100545452C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101315076A (en) | 2008-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI621778B (en) | Gear pump or hydraulic gear motor with helical toothing provided with hydraulic system for axial thrust balance | |
| US9926928B2 (en) | Oil pump | |
| US8734140B2 (en) | Reversible gerotor pump | |
| CN100545452C (en) | A kind of crescent gear pump | |
| CN103291609B (en) | Biaxial harmonic gear pump | |
| US11867281B2 (en) | Pump stage assembly, external gear pump, use of a pump stage assembly and vehicle transmission | |
| CN102084156A (en) | Transmission for a work machine with attached hydraulic fluid pump | |
| CN106715911A (en) | Screw compressor, compressor element and gearbox applied thereby | |
| KR20160144948A (en) | Gerotor Pump with double rotor assembly | |
| US10267309B2 (en) | Gear pump and gear motor | |
| CN206668541U (en) | Radially match somebody with somebody oily crescent gear pump | |
| CN103775596A (en) | Hydraulic pump configuration for automatic transmission | |
| CN201209550Y (en) | Internal gear pump | |
| US6592348B1 (en) | Lubricant pump and method of producing | |
| CN201582111U (en) | Triple low-pressure gear pump | |
| CN208845289U (en) | A kind of single cylinder diesel of crankshaft driving oil transfer pump | |
| CN207364244U (en) | A kind of power takeoff being lubricated using helicoidal pump, gearbox or Retarder | |
| CN210178569U (en) | Linear conjugate internal gear bipolar high-pressure pump | |
| CN103967782A (en) | Bidirectional three-gear pump | |
| CN201891601U (en) | Internal meshing gear oil pump | |
| CN205805901U (en) | A kind of pump body structure of crescent gear pump | |
| CN106704565B (en) | Gearbox main casing | |
| US8636487B2 (en) | Dual stage pump having intermittent mid-shift load supports | |
| RU162071U1 (en) | GEAR PUMP | |
| RU162576U1 (en) | GEAR PUMP |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20081203 Assignee: XI'AN FAST AUTOMOTIVE TRANSMISSION CO., LTD. Assignor: Shaanxi Fashite Gear Co., Ltd. Contract record no.: 2012610000127 Denomination of invention: Internal gear pump Granted publication date: 20090930 License type: Exclusive License Record date: 20120725 |