CA2494996A1 - Long-piston hydraulic machines - Google Patents
Long-piston hydraulic machines Download PDFInfo
- Publication number
- CA2494996A1 CA2494996A1 CA002494996A CA2494996A CA2494996A1 CA 2494996 A1 CA2494996 A1 CA 2494996A1 CA 002494996 A CA002494996 A CA 002494996A CA 2494996 A CA2494996 A CA 2494996A CA 2494996 A1 CA2494996 A1 CA 2494996A1
- Authority
- CA
- Canada
- Prior art keywords
- cylinder
- lubricating
- pistons
- fluid
- blow
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B1/141—Details or component parts
- F04B1/143—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
- F04B1/126—Piston shoe retaining means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B1/141—Details or component parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
- F04B27/109—Lubrication
Abstract
Smaller and lighter hydraulic pump/motors are provided with pistons having body portions substantially as long as the axial length of the respective cylinders in which they reciprocate. A plurality of respective lubricating channels, formed circumferentially and radially transecting the walls of each cylinder, is each positioned to be closed at all times by the axial cylindrical body of each respective piston during its entire stroke. Each lubricating channel is interconnected, one to another, to form a single, continuous lubricating passageway entirely within the cylinder block and not connected by either fluid "input" or fluid "output" passageways, being replenished solely by blow-by entering from the valve end of each cylinder. A
plurality of sealing members, each located near the open end of each cylinder, substantially eliminates blow-by from this lubricating passageway, thereby significantly increasing volumetric efficiency. The resulting improved lubrication, in combination with unique spring-biased holddown assemblies, permits use of variable-angle swash-plate arrangements that require neither dog-bones at the outer ends of the pistons nor conventional nutating-only wobblers.
plurality of sealing members, each located near the open end of each cylinder, substantially eliminates blow-by from this lubricating passageway, thereby significantly increasing volumetric efficiency. The resulting improved lubrication, in combination with unique spring-biased holddown assemblies, permits use of variable-angle swash-plate arrangements that require neither dog-bones at the outer ends of the pistons nor conventional nutating-only wobblers.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/229,407 US20040042910A1 (en) | 2002-08-28 | 2002-08-28 | Long-piston hydraulic machines |
US10/229,407 | 2002-08-28 | ||
US10/647,557 US20040042906A1 (en) | 2002-08-28 | 2003-08-25 | Long-piston hydraulic machines |
US10/647,557 | 2003-08-25 | ||
PCT/US2003/026707 WO2004020827A2 (en) | 2002-08-28 | 2003-08-26 | Long-piston hydraulic machines |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2494996A1 true CA2494996A1 (en) | 2004-03-11 |
CA2494996C CA2494996C (en) | 2008-10-28 |
Family
ID=32179426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002494996A Expired - Fee Related CA2494996C (en) | 2002-08-28 | 2003-08-26 | Long-piston hydraulic machines |
Country Status (10)
Country | Link |
---|---|
US (1) | US20040042906A1 (en) |
EP (1) | EP1546559A4 (en) |
JP (1) | JP4350038B2 (en) |
KR (1) | KR100659682B1 (en) |
CN (1) | CN100406726C (en) |
AU (1) | AU2003265692B2 (en) |
BR (1) | BR0313882A (en) |
CA (1) | CA2494996C (en) |
MX (1) | MXPA05002282A (en) |
WO (1) | WO2004020827A2 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101253351A (en) * | 2005-06-15 | 2008-08-27 | 托维克公司 | Dual hydraulic machine transmission |
US7475617B2 (en) * | 2005-06-15 | 2009-01-13 | Torvec, Inc. | Orbital transmission with geared overdrive |
CA2782370C (en) | 2009-12-23 | 2018-01-16 | Bp Corporation North America Inc. | Rigless low volume pump system |
US8834133B2 (en) | 2010-08-05 | 2014-09-16 | Bp Corporation North America Inc. | Pumping device for fluids located at the bottom of a drilled well |
EP2678588B1 (en) * | 2011-02-25 | 2021-05-05 | Neo Mechanics Limited | Axial piston pump with pistons having metallic sealing rings |
ITPR20120004A1 (en) * | 2012-02-06 | 2013-08-07 | Lavorwash Spa | WASHING DEVICE USING A FLUID PRESSURE JET |
CA2888028A1 (en) * | 2014-04-16 | 2015-10-16 | Bp Corporation North America, Inc. | Reciprocating pumps for downhole deliquification systems and pistons for reciprocating pumps |
CA2888027A1 (en) | 2014-04-16 | 2015-10-16 | Bp Corporation North America, Inc. | Reciprocating pumps for downhole deliquification systems and fluid distribution systems for actuating reciprocating pumps |
CN104153986B (en) * | 2014-07-21 | 2016-08-17 | 沃尔科技有限公司 | The axial plunger type hydraulic pump of hydraulic pressure backhaul |
CN105697258A (en) * | 2014-11-25 | 2016-06-22 | 无锡市洗选设备厂 | Plunger pump structure for sand washing machine |
US9828976B2 (en) * | 2015-01-30 | 2017-11-28 | Caterpillar Inc. | Pump for cryogenic liquids having temperature managed pumping mechanism |
IT201900024241A1 (en) * | 2019-12-17 | 2021-06-17 | Mixtron S R L | AXIAL PISTON PUMP WITH INCLINED PLATE |
CN112664386A (en) * | 2020-12-19 | 2021-04-16 | 王建设 | Pressure inclined type hydraulic power machine |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1931543A (en) * | 1930-08-16 | 1933-10-24 | Carl F High | Fuel pump |
US2166857A (en) * | 1934-10-06 | 1939-07-18 | Bugatti Jean | Lubricating device |
US2672095A (en) * | 1949-08-06 | 1954-03-16 | Siam | High-pressure hydraulic pump |
US2913993A (en) * | 1953-05-18 | 1959-11-24 | Ohio Commw Eng Co | High temperature hydraulic pump |
US2957421A (en) * | 1954-03-17 | 1960-10-25 | Bendix Corp | Fuel supply pump for prime movers |
US3018737A (en) * | 1958-01-24 | 1962-01-30 | Ernest E Cook | Pump structure |
US3056387A (en) * | 1961-04-10 | 1962-10-02 | Budzich Tadeusz | Hydraulic apparatus |
GB1067962A (en) * | 1964-02-15 | 1967-05-10 | Hydraulik Gmbh | Improvements in/or relating to swash plate pumps |
GB1085511A (en) * | 1964-07-09 | 1967-10-04 | Lucas Industries Ltd | Hydraulic reciprocating pumps |
US3861276A (en) * | 1970-03-03 | 1975-01-21 | Messier Sa | Hydraulic rotary barrel pumps or motors |
US3616726A (en) * | 1970-04-02 | 1971-11-02 | Sperry Rand Corp | Power transmission |
US4007663A (en) * | 1974-02-01 | 1977-02-15 | Mitsubishi Kogyo Kabushiki Kaisha | Hydraulic pump of the axial piston type |
US4232587A (en) * | 1979-04-25 | 1980-11-11 | Kline Manufacturing Co. | Fluid pump |
US4776260A (en) * | 1980-11-07 | 1988-10-11 | Vincze Alexander L | Constant pressure pump |
US4478130A (en) * | 1981-03-19 | 1984-10-23 | Sundstrand Corporation | Arrangement for slipper cavitation erosion control and impact reduction |
JPS61118566A (en) * | 1984-11-14 | 1986-06-05 | Honda Motor Co Ltd | Swash plate type hydraulic device |
US4901529A (en) * | 1986-07-23 | 1990-02-20 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulically operated continuously variable transmission |
JPS63145867A (en) * | 1986-12-09 | 1988-06-17 | Honda Motor Co Ltd | Hydraulic power transmission |
DE3723988A1 (en) * | 1987-07-20 | 1989-02-09 | Hydromatik Gmbh | AXIAL PISTON MACHINE WHOSE PISTON IS DESIGNED AS A STEPPED PISTON |
US4843817A (en) * | 1987-11-18 | 1989-07-04 | Shivvers, Inc. | Integrated hydraulic transmission |
JPH0697034B2 (en) * | 1988-06-07 | 1994-11-30 | 松下電器産業株式会社 | Movable swash plate compressor |
US4993380A (en) * | 1990-01-02 | 1991-02-19 | Hsu Shin I | Lubrication mechanism of engine cylinder |
US5440878A (en) * | 1992-08-27 | 1995-08-15 | Vernon E. Gleasman | Variable hydraulic machine |
US5513553A (en) * | 1994-07-13 | 1996-05-07 | Gleasman; Vernon E. | Hydraulic machine with gear-mounted swash-plate |
KR0135479B1 (en) * | 1994-10-01 | 1998-04-28 | 서상기 | Variable capacity mechanism of slant axial piston type hydraulic pump & motor |
TW428673U (en) * | 1996-07-15 | 2001-04-01 | Toyoda Automatic Loom Works | Single piston for compressor |
US5704272A (en) * | 1996-08-26 | 1998-01-06 | Sundstrand Corporation | Axial piston energy converting device |
US6035828A (en) * | 1998-03-11 | 2000-03-14 | Caterpillar Inc. | Hydraulically-actuated system having a variable delivery fixed displacement pump |
JP2000097149A (en) * | 1998-09-22 | 2000-04-04 | Sanden Corp | Swash plate type compressor |
JP2001165049A (en) * | 1999-12-08 | 2001-06-19 | Toyota Autom Loom Works Ltd | Reciprocating type compressor |
JP2001107850A (en) * | 1999-10-12 | 2001-04-17 | Zexel Valeo Climate Control Corp | Swash plate type refrigerant compressor |
DE10055262A1 (en) * | 2000-11-08 | 2002-05-23 | Linde Ag | Hydrostatic axial piston machine in inclined disc construction method |
-
2003
- 2003-08-25 US US10/647,557 patent/US20040042906A1/en not_active Abandoned
- 2003-08-26 JP JP2004531484A patent/JP4350038B2/en not_active Expired - Fee Related
- 2003-08-26 AU AU2003265692A patent/AU2003265692B2/en not_active Ceased
- 2003-08-26 KR KR1020057003519A patent/KR100659682B1/en not_active IP Right Cessation
- 2003-08-26 MX MXPA05002282A patent/MXPA05002282A/en active IP Right Grant
- 2003-08-26 BR BR0313882-8A patent/BR0313882A/en not_active IP Right Cessation
- 2003-08-26 CN CNB038205033A patent/CN100406726C/en not_active Expired - Fee Related
- 2003-08-26 WO PCT/US2003/026707 patent/WO2004020827A2/en active IP Right Grant
- 2003-08-26 EP EP03791793A patent/EP1546559A4/en not_active Withdrawn
- 2003-08-26 CA CA002494996A patent/CA2494996C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU2003265692A1 (en) | 2004-03-19 |
WO2004020827A3 (en) | 2004-05-06 |
EP1546559A2 (en) | 2005-06-29 |
JP4350038B2 (en) | 2009-10-21 |
WO2004020827A2 (en) | 2004-03-11 |
EP1546559A4 (en) | 2011-03-09 |
MXPA05002282A (en) | 2005-08-18 |
KR20050032623A (en) | 2005-04-07 |
AU2003265692B2 (en) | 2007-05-17 |
CA2494996C (en) | 2008-10-28 |
BR0313882A (en) | 2005-08-02 |
JP2006510833A (en) | 2006-03-30 |
CN1688812A (en) | 2005-10-26 |
KR100659682B1 (en) | 2006-12-21 |
AU2003265692B8 (en) | 2004-03-19 |
US20040042906A1 (en) | 2004-03-04 |
CN100406726C (en) | 2008-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20140826 |