EP1644644A1 - Hydraulic distributor with torque slits - Google Patents
Hydraulic distributor with torque slitsInfo
- Publication number
- EP1644644A1 EP1644644A1 EP04767490A EP04767490A EP1644644A1 EP 1644644 A1 EP1644644 A1 EP 1644644A1 EP 04767490 A EP04767490 A EP 04767490A EP 04767490 A EP04767490 A EP 04767490A EP 1644644 A1 EP1644644 A1 EP 1644644A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- return
- bore
- orifice
- orifices
- 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
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
- F15B13/0403—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves a secondary valve member sliding within the main spool, e.g. for regeneration flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/8667—Reciprocating valve
- Y10T137/86694—Piston valve
- Y10T137/86702—With internal flow passage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/8667—Reciprocating valve
- Y10T137/86694—Piston valve
- Y10T137/8671—With annular passage [e.g., spool]
Definitions
- Hydraulic distributors comprising: a distributor body, a pressurized hydraulic fluid inlet orifice which is intended to be connected to a source of pressurized hydraulic fluid, a fluid return orifice to a reservoir, - at least two working orifices which are each intended to be connected to at least one hydraulic receiver to allow the flow and return of the fluid, - a drawer housed in a bore formed in the body and which is intended to be moved longitudinally for a selective transmission of the hydraulic fluid under pressure to the working orifices from the admission orifice, - a passage formed in the body for selectively connecting the admission orifice with the working orifices, - regulating means which are located in said passage to be interposed between the inlet port and the working ports, and which are associated with a channel of the load detection line, - a supply bridge which comprises two branches each opening into the bore of the slide, on either side of the intake orifice
- the object of the present invention is to provide a hydraulic distributor which overcomes the aforementioned drawbacks, that is to say that it allows the control of a hydraulic receiver without jerks at start-up, and this in particular when the movement provided should be slow.
- the hydraulic distributor of the aforementioned type is essentially characterized in that it further comprises two secondary non-return valves which are respectively mounted in the longitudinal channels, upstream of the heads of the non-return valves. main, and in that the secondary valves are connected to torque slots which open into the bore in which the drawer moves, each of these slots being connected, in at least one position of the drawer, to a branch of the bridge d 'food.
- the secondary non-return valves are open during the phases of escaping the hydraulic fluid in the section of the slide opposite the charge pressure in the working orifice.
- the torque slots are of circular cross section.
- the torque slots are of oblong cross section.
- the torque slots are of lenticular cross section.
- the hydraulic distributor 1 shown in the figure comprises a body 2 in which are formed an orifice P for admitting a fluid under pressure, a return port T of the fluid towards a reservoir (not shown), as well as two working orifices A and B which are each intended to be connected to at least one hydraulic receiver (not shown).
- the intake port P is in the form of a channel which passes through the body 1 transversely to the plane of the drawing and which opens onto the two main faces of the body serving as support during the stacking side by side of several distributors like the one shown in figure.
- the orifice T consists of one or two channels passing through the body 1 transversely to the plane of the drawing.
- the dispenser 1 also has a bore 4 which passes longitudinally through the body 1 leading to the two opposite faces 5 and 6 of this body, and in which a drawer 8 is mounted.
- the drawer 8 is capable of sliding in this bore in a back and forth movement in the directions defined by the double arrow F.
- the body 2 and the drawer 8 have passages and / or grooves arranged so as to cooperate in order to establish desired connections or closings orifices P, T, A and B depending on the position occupied by the drawer 8.
- the body 2 has a supply chamber 10 which is associated with the drawer 8 and which is in permanent communication with the orifice d inlet P.
- a supply bridge 20 is formed in the body 1 and comprises two branches 21 and 22 which respectively open into the bore 4 in which the slide 8 moves. Each of these branches is located on either side of the supply chamber 10 and of the passage 12 to be respectively selectively connected to the orifices P, A, and B.
- the drawer 8 has internally two main non-return valves 25 and 26 which are arranged so as to be respectively interposed between the supply bridge 20 and the working orifices A and B.
- Each of the non-return valves 25 and 26 has a movable valve head 31, 32 which are each located inside a longitudinal channel 33, 34.
- Each of these channels 33, 34 has transverse feed slots 35, 36 which extend transversely inside the drawer 8 to open into the bore 4.
- These feed slots 35, 36 are provided with such that, in the rest position as shown in the figure, they are closed off by the walls of the bore 4. They are selectively brought into communication with the orifices P, A or B by the displacement of the slide 8.
- the dispenser 1 further comprises two secondary non-return valves 40 and 41 which are respectively mounted in the longitudinal channels 33, 34, upstream of the heads 31, 32 of the main non-return valves 25 and 26
- each of the secondary valves 40 and 41 consists of a spring 42, 43 which bears on the head 31, 32 of the main valves and which urges a ball or valve head 44, 45.
- torque slots 50, 51 extend transversely inside the drawer 8 to open into the bore 4.
- the arrangement of these slots is adapted so that in the rest position of the drawer 8, the torque slots 50, 51 open respectively into the branches 21 and 22 of the supply bridge 20.
- the secondary non-return valves 40 and 41 open during the hydraulic fluid exhaust phases, in the capacity opposite the load and remain closed when the pressure prevailing in the supply bridge 20 is lower than the load prevailing in A or B.
- the slots of torque 50 and 51 can take any form suitable for the particular use of the distributor in which they are installed. They are in particular formed by transverse channels formed in the drawer and which open onto the surface of this drawer according to orifices of particular shape. In a first embodiment, the torque slots open out through orifices of circular cross section.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Check Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0308685A FR2857704B1 (en) | 2003-07-16 | 2003-07-16 | HYDRAULIC DISTRIBUTOR WITH TORQUE SLOTS |
PCT/FR2004/001644 WO2005017364A1 (en) | 2003-07-16 | 2004-06-28 | Hydraulic distributor with torque slits |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1644644A1 true EP1644644A1 (en) | 2006-04-12 |
EP1644644B1 EP1644644B1 (en) | 2006-11-15 |
Family
ID=33548179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04767490A Expired - Lifetime EP1644644B1 (en) | 2003-07-16 | 2004-06-28 | Hydraulic distributor with torque slits |
Country Status (8)
Country | Link |
---|---|
US (1) | US7581562B2 (en) |
EP (1) | EP1644644B1 (en) |
JP (1) | JP4560515B2 (en) |
CN (1) | CN100389269C (en) |
AT (1) | ATE345446T1 (en) |
DE (1) | DE602004003250T2 (en) |
FR (1) | FR2857704B1 (en) |
WO (1) | WO2005017364A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502005004981D1 (en) * | 2005-04-20 | 2008-09-18 | Bucher Hydraulics Ag Neuheim | CONTROL VALVE FOR A HYDROMOTOR |
US7921878B2 (en) * | 2006-06-30 | 2011-04-12 | Parker Hannifin Corporation | Control valve with load sense signal conditioning |
FR2966279A1 (en) * | 2011-01-12 | 2012-04-20 | Bosch Rexroth Dsi Sas | Power or control device for e.g. agricultural vehicle, has adjusting unit that is provided for adjusting intensity of current applied at terminals of reel with respect to electrical current applied at terminals of position maintaining units |
JP5602074B2 (en) * | 2011-03-16 | 2014-10-08 | カヤバ工業株式会社 | Control valve |
JP6338428B2 (en) * | 2014-04-11 | 2018-06-06 | Kyb株式会社 | Valve structure |
CA2960802A1 (en) * | 2014-09-29 | 2016-04-07 | Parker-Hannifin Corporation | Directional control valve |
WO2024027913A1 (en) * | 2022-08-03 | 2024-02-08 | Xcmg European Research Center Gmbh | Valve assembly for controlling at least one connection of a hydraulic load |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2359802A (en) * | 1943-08-21 | 1944-10-10 | Hydraulic Control Engineering | Hollow plunger control valve |
US2448532A (en) * | 1946-09-09 | 1948-09-07 | Hydraulic Control Engineering | Automatic power position hold for control valves |
US2651324A (en) * | 1949-11-01 | 1953-09-08 | New York Air Brake Co | Multiple control valve |
US3004555A (en) * | 1957-02-19 | 1961-10-17 | Borg Warner | Valves |
US2965133A (en) * | 1959-01-08 | 1960-12-20 | New York Air Brake Co | Valve |
US2946347A (en) * | 1959-04-22 | 1960-07-26 | New York Air Brake Co | Control valve having a movable member containing combination check and relief valve unit |
US3215160A (en) * | 1962-12-28 | 1965-11-02 | New York Air Brake Co | Valve |
US3255777A (en) * | 1963-11-26 | 1966-06-14 | New York Air Brake Co | Directional control valve |
US3481364A (en) * | 1967-11-30 | 1969-12-02 | Commercial Shearing | Hydraulic valves |
US3482600A (en) * | 1968-03-04 | 1969-12-09 | Commercial Shearing | Hollow slide valves |
US3616817A (en) * | 1969-08-04 | 1971-11-02 | Sigma | Hydraulic distributors |
US3707988A (en) * | 1971-09-24 | 1973-01-02 | Commercial Shearing | Control valves |
US3774635A (en) * | 1972-04-18 | 1973-11-27 | Sperry Rand Corp | Power transmission |
US3986522A (en) * | 1974-10-15 | 1976-10-19 | General Signal Corporation | Hydraulic control valve |
ZA7696B (en) * | 1975-02-06 | 1976-12-29 | Commercial Shearing | Compensated work port fluid valves and work port compensators |
US4428400A (en) * | 1979-02-28 | 1984-01-31 | Atos Oleodinamica S.P.A. | Electrically and hydraulically actuated flow-distributing valve unit |
JPS5830501A (en) * | 1981-08-18 | 1983-02-23 | Hitachi Constr Mach Co Ltd | Direction change-over valve |
DE3302000A1 (en) * | 1983-01-21 | 1984-07-26 | Danfoss A/S, Nordborg | HYDRAULIC VALVE |
US4789002A (en) * | 1986-01-17 | 1988-12-06 | Commercial Shearing, Inc. | Fluid valve structures |
JPH0768962B2 (en) * | 1990-06-22 | 1995-07-26 | 株式会社ゼクセル | Directional switching valve with load sensing function |
CA2097933A1 (en) * | 1990-12-12 | 1992-06-13 | Graeme John Mcalister | Control valve |
US6073963A (en) * | 1998-03-19 | 2000-06-13 | Oea, Inc. | Initiator with injection molded insert member |
US6098403A (en) * | 1999-03-17 | 2000-08-08 | Husco International, Inc. | Hydraulic control valve system with pressure compensator |
US6539712B2 (en) * | 1999-12-27 | 2003-04-01 | Kayaba Kogyo Kabushiki Kaisha | Hydraulic drive unit |
-
2003
- 2003-07-16 FR FR0308685A patent/FR2857704B1/en not_active Expired - Fee Related
-
2004
- 2004-06-28 EP EP04767490A patent/EP1644644B1/en not_active Expired - Lifetime
- 2004-06-28 WO PCT/FR2004/001644 patent/WO2005017364A1/en active IP Right Grant
- 2004-06-28 DE DE200460003250 patent/DE602004003250T2/en not_active Expired - Lifetime
- 2004-06-28 US US10/560,583 patent/US7581562B2/en not_active Expired - Fee Related
- 2004-06-28 AT AT04767490T patent/ATE345446T1/en not_active IP Right Cessation
- 2004-06-28 JP JP2006519949A patent/JP4560515B2/en not_active Expired - Fee Related
- 2004-06-28 CN CNB2004800190763A patent/CN100389269C/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2005017364A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP4560515B2 (en) | 2010-10-13 |
CN1829864A (en) | 2006-09-06 |
ATE345446T1 (en) | 2006-12-15 |
FR2857704A1 (en) | 2005-01-21 |
US20060137751A1 (en) | 2006-06-29 |
JP2007516388A (en) | 2007-06-21 |
US7581562B2 (en) | 2009-09-01 |
FR2857704B1 (en) | 2007-12-28 |
EP1644644B1 (en) | 2006-11-15 |
CN100389269C (en) | 2008-05-21 |
DE602004003250D1 (en) | 2006-12-28 |
WO2005017364A1 (en) | 2005-02-24 |
DE602004003250T2 (en) | 2007-04-19 |
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