WO2009044491A1 - ギヤポンプ - Google Patents
ギヤポンプ Download PDFInfo
- Publication number
- WO2009044491A1 WO2009044491A1 PCT/JP2007/069638 JP2007069638W WO2009044491A1 WO 2009044491 A1 WO2009044491 A1 WO 2009044491A1 JP 2007069638 W JP2007069638 W JP 2007069638W WO 2009044491 A1 WO2009044491 A1 WO 2009044491A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- housings
- gear pump
- particles
- gear
- Prior art date
Links
Classifications
-
- 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
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/102—Adjustment of the interstices between moving and fixed parts of the machine by means other than fluid pressure
-
- 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
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
-
- 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
- F04C14/28—Safety arrangements; Monitoring
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
- F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
-
- 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
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
-
- 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
- F04C2240/00—Components
- F04C2240/10—Stators
-
- 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/70—Safety, emergency conditions or requirements
Definitions
- the present invention relates to a gear pump that discharges fluid by rotating while a pair of gears are engaged with each other.
- a gear pump provided in a hydraulic device, a hydraulic device or the like includes a body in which a pair of gears are incorporated and a housing in contact with the body, and the body and the housing are fastened by a plurality of bolts.
- the fluid pressure generated in the body when the gear pump is activated generates a force that moves the housing in one direction relative to the body.
- a gap may be formed between the body and the housing, and fluid may leak from the gear pump.
- an object of the present invention is to provide a gear pump that prevents displacement of the body and the housing without increasing the depth of machining cut on the end face of the body.
- the present invention is a gear pump that discharges a fluid by rotating while a pair of gears mesh, and includes a body in which each gear is incorporated, a housing in contact with the body, an end face of the body in contact with the body, and a housing. Body and housing interposed between end faces And a plurality of fastening members for fastening housing to the body.
- a large number of fine particles are interposed between the end surface of the body and the end surface of the housing, and by increasing the frictional force of the joint portion, the fluid pressure in the gear pump causes the space between the body and the housing. It is possible to effectively prevent the position shift from occurring and maintain the pump efficiency of the gear pump.
- FIG. 1 is a longitudinal sectional view showing a gear pump according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view taken along line AA in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- the gear pump 1 includes a body 2 in which a drive gear 11 and a driven gear 12 are incorporated as a pair of gears, and housings 3 and 4 that contact the body 2 from both sides. Side plates 5 and 6 are interposed between both end faces of the drive gear 1 1 and the driven gear 1 2 and the housings 3 and 4.
- the body 2 has a gear chamber 9 for accommodating the drive gear 11 and the driven gear 12 inside thereof, and the housings 3 and 4 are in contact with both end faces 25 and 26 of the body 2.
- the housing 3 has an end surface 28 that is in contact with the end surface 25 of the body 2, closes one end of the body 2, and functions as a mounting flange that is attached to a support member (not shown).
- a seal ring 41 is interposed between the end face 25 of the body 2 and the housing 3, and the gear chamber 9 is sealed by the seal ring 41.
- the housing 3 may be formed integrally with the body 2.
- the housing 4 has an end face 29 that contacts the end face 26 of the body 2, and functions as a cover that closes the other end of the body 2.
- a seal 42 is interposed between the end face 26 of the body 2 and the housing 4, and the gear chamber 9 is sealed by the seal 42.
- the body 2 and the housings 3 and 4 are fastened by four ports 17 to 20.
- the bolts 17 to 20 provided as fastening members are pressed against each other by the axial force between the end surface 25 of the body 2 and the end surface 28 of the housing 3, and the end surface 26 of the body 2 and the housing 4.
- the end faces 29 of each other are pressed against each other. Accordingly, the body 2 and the housings 3 and 4 are fixed by the frictional force generated between the end surfaces 25 and 28 and the frictional force generated between the end surfaces 26 and 29.
- Shafts 13 and 15 are formed at both ends of the drive gear 11.
- Shafts 14 and 16 are formed at both ends of the driven gear 1 2.
- the shafts 1 3 and 14 are rotatably supported by the housing 3 via bearings 3 3 and 3 4.
- the shafts 15 and 16 are rotatably supported by the cover 4 via bearings 3 5 and 3 6.
- the shaft 15 of the drive gear 11 is rotated in the clockwise direction as shown by the arrow in FIG. 2, and the shaft 16 of the driven gear 12 rotates in the counterclockwise direction as shown by the arrow in FIG.
- the fluid sucked in from the low pressure port 2 3 located in the tangential direction of the mating surface becomes the drive gear 1 1 and the driven gear. 1 Carried by the gear meshing part of 2 and discharged from the high pressure port 2 2 ports.
- hydraulic fluid is used as the fluid circulating through the gear pump 1.
- a machining hole 27 is formed on the end surface 26 of the body 2.
- a processed hole 27 is formed on the end face 26 of the body 2.
- This process 27 consists of a large number of thin grooves cut by a milling machine.
- the processed stitches 27 are formed so as to extend in the longitudinal direction substantially perpendicular to the sliding direction indicated by the arrow B in FIG.
- the processed stitches 27 are not limited to this, and may be formed in a mesh shape, for example.
- the body 2 is formed of a material having higher hardness than the housings 3 and 4.
- Body 2 is an example
- the housings 3 and 4 are made of, for example, an aluminum material.
- the machining depth 27 of the end faces 25, 26 of the body 2 is small, the displacement of the housings 3, 4 cannot be prevented sufficiently.
- the machining depth 27 is large, a gap may be formed between the body 2 and the housings 3 and 4, and fluid leakage from the gear pump 1 may occur.
- the present invention allows a large number of fine particles 30 to be interposed at the joint between the body 2 and the housings 3 and 4, so that the body 2 7 can be manufactured without increasing the depth of machining. And the housing 3 and 4 are prevented from being displaced.
- the particles 30 are made of, for example, cutting powder such as steel, pig iron, or carbon, and have a higher hardness than those of the body 2 and the housings 3 and 4.
- the particles 3 0 bite into the end surfaces 2 5 and 2 6 of the body 2 and the end surfaces 2 8 and 2 9 of the housing 3 and 4, respectively, and the body 2 and the housings 3 and 4 It is possible to increase the frictional force along the joints and effectively prevent displacement between each other.
- Particles 30 are mixed in coating agent 31 and applied to both end faces 25, 26 of body 2 together with coating agent 31.
- the coating agent 31 adheres to the joint between the body 2 and the housings 3 and 4 to eliminate gaps and prevent corrosion such as electrolytic corrosion.
- the present invention is a gear pump 1 that rotates and discharges fluid while the drive gear 1 1 and the driven gear 1 2 are engaged with each other, and the body 2 in which the drive gear 1 1 and the driven gear 1 2 are incorporated.
- the housings 3 and 4 in contact with the body 2 and the end surfaces 2 5 and 2 6 of the body 2 in contact with each other and the end surfaces 2 8 and 2 9 of the housing 3 and 4, and the body 2 and the housings 3 and 4 A large number of particles 30 that prevent misalignment, and multiple bolts (fastening members) that fasten the housings 3 and 4 to the body 2 2 0.
- a large number of particles 30 are interposed between the end faces 2 5 and 2 6 of the body 2 and the end faces 2 8 and 2 9 of the housings 3 and 4, so that the body 2 and the housings 3 and 4 are driven by the fluid pressure in the gear pump 1. Therefore, it is possible to effectively prevent the displacement along the joint between the two and the pump efficiency of the gear pump 1 can be maintained.
- the particles 30 are formed of a material having a higher hardness than the body 2 and the housings 3 and 4.
- a machining mark 27 is formed on at least one of the end faces 25, 26 of the body 2 and the end faces 28, 29 of the housings 3, 4, and the particles 30 and the machining marks 27 are interposed therebetween.
- the body 2 and the housings 3 and 4 are positioned by the machining marks 2 7 and are also positioned by the particles 30, so that even if the machining depth of the machining marks 2 7 is reduced, the housing 3, The position shift of 4 can be sufficiently prevented. As a result, it is possible to reduce the cutting depth of the machining stitch 27 and prevent the fluid from leaking between the body 2 and the housings 3 and 4.
- the particles 30 are mixed with the coating agent 3 1, and the particles together with the coating agent 3 1 are applied to at least one of the end surfaces 2 5 and 2 6 of the body 2 and the end surfaces 2 8 and 2 9 of the housing 3 and 4. 3 Apply 0.
- the particles 30 can be uniformly distributed on the end faces 2 5 and 2 6 of the body 2 or the end faces 2 8 and 2 9 of the housings 3 and 4, so that the body 2 and the housing can be separated by the fluid pressure in the gear pump 1. It is possible to effectively prevent displacement between 3 and 4.
- the particles 30 are formed of a material whose hardness is lower than that of the body 2 and the housings 3 and 4, and compressed between the body 2 and the housings 3 and 4. It is also possible to increase the frictional force through particles 30.
- both the end faces 2 5 and 2 6 of the body 2 and the end faces 2 8 and 2 9 of the housings 3 and 4 are formed smoothly so that the body 2 and the housing 3 can be used without using the machining holes 2 7. , 4 may be positioned only by the particles 30.
- the gear pump according to the present invention is suitable for a pump provided in a hydraulic device, a hydraulic device or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/069638 WO2009044491A1 (ja) | 2007-10-02 | 2007-10-02 | ギヤポンプ |
KR1020107009603A KR20100083157A (ko) | 2007-10-02 | 2007-10-02 | 기어 펌프 |
JP2009535948A JPWO2009044491A1 (ja) | 2007-10-02 | 2007-10-02 | ギヤポンプ |
EP07829376A EP2202410A1 (en) | 2007-10-02 | 2007-10-02 | Gear pump |
US12/733,808 US20100202913A1 (en) | 2007-10-02 | 2007-10-02 | Gear pump |
CN200780100686A CN101802406A (zh) | 2007-10-02 | 2007-10-02 | 齿轮泵 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/069638 WO2009044491A1 (ja) | 2007-10-02 | 2007-10-02 | ギヤポンプ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009044491A1 true WO2009044491A1 (ja) | 2009-04-09 |
Family
ID=40525924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/069638 WO2009044491A1 (ja) | 2007-10-02 | 2007-10-02 | ギヤポンプ |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100202913A1 (ja) |
EP (1) | EP2202410A1 (ja) |
JP (1) | JPWO2009044491A1 (ja) |
KR (1) | KR20100083157A (ja) |
CN (1) | CN101802406A (ja) |
WO (1) | WO2009044491A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2448272C2 (ru) * | 2010-05-20 | 2012-04-20 | Мирослав Георгиевич Георгиевский | Шестеренная гидромашина |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101994691A (zh) * | 2010-09-30 | 2011-03-30 | 张良 | 一种齿轮泵液体增压设备及其生产工艺和用途 |
US9028222B2 (en) | 2011-08-26 | 2015-05-12 | Hamilton Sundstrand Corporation | Variable output pump |
US8845313B2 (en) * | 2011-11-18 | 2014-09-30 | Caterpillar Inc. | Oil pump for an engine |
CN105526160A (zh) * | 2014-10-16 | 2016-04-27 | 德昌电机(深圳)有限公司 | 齿轮泵 |
US11493035B2 (en) | 2019-08-14 | 2022-11-08 | Viking Pump, Inc. | High pressure pumping system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06147133A (ja) | 1992-11-09 | 1994-05-27 | Kayaba Ind Co Ltd | ギヤポンプ |
JP2006022948A (ja) * | 2004-06-07 | 2006-01-26 | Honda Motor Co Ltd | 締結構造 |
-
2007
- 2007-10-02 KR KR1020107009603A patent/KR20100083157A/ko not_active Application Discontinuation
- 2007-10-02 US US12/733,808 patent/US20100202913A1/en not_active Abandoned
- 2007-10-02 WO PCT/JP2007/069638 patent/WO2009044491A1/ja active Application Filing
- 2007-10-02 CN CN200780100686A patent/CN101802406A/zh active Pending
- 2007-10-02 JP JP2009535948A patent/JPWO2009044491A1/ja active Pending
- 2007-10-02 EP EP07829376A patent/EP2202410A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06147133A (ja) | 1992-11-09 | 1994-05-27 | Kayaba Ind Co Ltd | ギヤポンプ |
JP2006022948A (ja) * | 2004-06-07 | 2006-01-26 | Honda Motor Co Ltd | 締結構造 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2448272C2 (ru) * | 2010-05-20 | 2012-04-20 | Мирослав Георгиевич Георгиевский | Шестеренная гидромашина |
Also Published As
Publication number | Publication date |
---|---|
EP2202410A1 (en) | 2010-06-30 |
KR20100083157A (ko) | 2010-07-21 |
CN101802406A (zh) | 2010-08-11 |
US20100202913A1 (en) | 2010-08-12 |
JPWO2009044491A1 (ja) | 2011-02-03 |
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