US3635244A - Valve for distributing fluid to a system of fluid-actuated machines - Google Patents

Valve for distributing fluid to a system of fluid-actuated machines Download PDF

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Publication number
US3635244A
US3635244A US2067*[A US3635244DA US3635244A US 3635244 A US3635244 A US 3635244A US 3635244D A US3635244D A US 3635244DA US 3635244 A US3635244 A US 3635244A
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United States
Prior art keywords
fluid
valve
passage
compartment
compartments
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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.)
Expired - Lifetime
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US2067*[A
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English (en)
Inventor
Ferruccio Lamborghini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lamborghini Oleodinamica SpA
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Lamborghini Oleodinamica SpA
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    • 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
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • 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
    • Y10T137/5109—Convertible
    • Y10T137/5283—Units interchangeable between alternate locations
    • 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
    • Y10T137/87169—Supply and exhaust

Definitions

  • ABSTRACT A valve for distributing fluid to a system of fluid-actuated machines in which a monobloc defines a plurality of spaced compartments, with each compartment having ports communicable with an individual machine of the system, first passage means in the monobloc for distributing fluid equally to the compartments, each compartment having a cavity to establish a second passage means for supplying fluid to the compartments and communicable with fluid outflow means from said monobloc, a pair of channels communicable with each of said compartments to exhaust fluid therefrom, first valve means in each compartment to direct the flow in said second passage means, and second valve means interposed between said first passage means and said compartment to control the flow of fluid to each machine whereby the machines may be actuated in series-parallel, in series or in parallel.
  • the present invention relates to an improvement of multielement directional valves for oleodynamic controls, also known as hydrodynamic flow distributors, arranged for the actuation of hydraulic machines.
  • an oleodynamic circuit is formed by a tank containing the hydraulic fluid, a pump drawing-in fluid and conveying it under pressure to the different eonsumption" devices consisting by one or more hydraulic machines: rams, motors having pistons, or gears or any other device which converts the potential energy of the fluid into mechanical energy.
  • This stationary unit moreover, has appropriate internal cavities within which are displaced by external actuation, one or more displaceable elements, with pistons or cylindrical cursors provided with grooves or bores, with the cursors being arranged to uncover particular passages and to cover others, during their displacement.
  • the distributor comprises different elements or sections, of which each has its cursor and there are as many elements as there are hydraulic machines to operate with each section being equipped with one or two connectors for the pipes leading to the application devices.
  • the section has a single connector (singleaction)
  • the fluid leaves and returns to the distributor to and from the hydraulic machine, traversing one and the same pipe in both directions.
  • outward flow is performed the transmission of power by means of the fluid which accumulate within the ram chamber whereas the return flow is operated by the action of the spring or weight applied to the ram draining the latter of fluid which is caused to traverse the path in the reverse direction.
  • the fluid is conveyed from one connector of the distributor to the application device, while the return flow of the fluid from the application device to the second connector of the element of the distributor occurs at the same time.
  • the single-action may, however, be employed only for actuation of double-action rams, and oleodynamic motors.
  • the source of fluid supply (pump) is connected to the corresponding application machine, precluding the supply to all the other following sections, which are not supplied although they are operated (b) supply in parallel.
  • the fluid is connected to the appropriate application device, without preventing all the other sections per se from being supplied by the pump as well.
  • the source of supply is connected to the appropriate application device, precluding the supply to all the other following sections as in condition (a), with the difference that the discharge from the application device operated feeds the following sections if operated at the same time.
  • the known distributors are commonly formed by combina tion of different elements assembled together, of which each one represents a control section.
  • the monobloc distributor consists of a single unit cast in one piece, which nevertheless represents the required sections as well, being equipped internally with all the intercommunication cavities, and externally with all the connectors for the application devices, thus being equivalent to an already assembled composite distributor.
  • the monobloc distributor offers a great advantages from the structural point of view as well the elimination of oil losses between the sections, it imposed the necessity of employing several distributors whenever it is desired, for example, to have a set of sections fed in parallel and another set fed in series, and this is due to the impossibility of insertion between the sections of the separating elements which are employed in sectional distributors.
  • the present invention suggests a monobloc multisectional distributor in which the internal structure of each section remains identical and machined in identical manner, with the possibility, however, of obtaining any kind of supply simply by changing the cursor and a nonreturn valve whose locations in the unit remain unchanged.
  • the kind of supply (whether single-feed, feed in parallel, in series) may be established at will in any section of the monobloc unit, intercalating the different feeds as required.
  • FIG. 1 is a top plan view of a four-section monobloc dis-' tributor
  • FIG. 2 is a view looking in the direction of arrow in FIG. 1,
  • FIG. 3 is a view in cross section taken along the line BB of FIG. 1, the view looking in the direction of the arrows,
  • FIG. 4 is a view in section taken along the DD of FIG. 2, the view looking in the direction of the arrows,
  • FIG. 5 is a view in section taken along the line CC of FIG. 4, the view looking in the direction of the arrows,
  • FIG. 6 is a sectional view of the nonretum valve for supply in parallel
  • FIG. 7 is a sectional view of the nonretum valve for supply in series or for single feed.
  • FIG. 8 is a sectional view of cursor appropriate.
  • Compartments 8-9-10-11 are the elements which, although they have in common a monobloc unit 12, constitute the four controls which are each intended to lead the corresponding oleodynamic machine.
  • the element 8 has connectors 13 and 14 for the delivery and return of the fluid from the distributor to the receiving machine.
  • the elements 9 have two connectors 15-16, the element 10,connectors 17-18, and the element 11 connectors 19, 20.
  • Each element 8-9-10-11 carries corresponding cursors or slide-valves 21-22-23-24 (FIGS. 1, 2). The cursors 21-22-23-24 do not appear in the corresponding seats in FIG. 4.
  • FIG. 4 are shown three of the four connections joining the elements 8-9-10-11.
  • Two connections are defined by two discharge passages 25 and 26 which extend along the outer longitudinal sides and lead to a discharge or outflow chamber 27 in communication with the outflow connector 7.
  • a third connection is obtained by means of a central forked passages 28-29-30 which starts an inlet or inflow chamber 29, and after having traversed all the elements 8-9-10-11 also opens into the discharge chamber 27.
  • a fourth connecting passage 30 (FIG. 5) also starts from the inlet chamber 29, but after having traversed all the elements 8-9-10-1 1 terminates in a dead end after the last element 11.
  • FIG. 3 are illustrated the four passages 25-26-28-30 in section.
  • FIG. 3 illustrating the sectioned elements 8 are apparent the tow connectors 13 and 14 for the receivers which are connected through corresponding passages 31 and 32 to annular openings 33 and 34 of a bore 35 housing the cursor 21.
  • Two other openings or parts 36 and 27 (FIG.
  • the central connecting passage 28 (FIGS. 3-4) which in alignment with each cursorhousing bore branches into two forked portions 39 and 40 (FIG. 4), forming the corresponding passages 28-39-40 within the cursor-housing bore 35; the two forked portions 39-40 (FIG, 3) are, at the top, connected by a bridging passage 41.
  • the connecting passage 30, the bridging passage 38 and the bridging passage 41 are in communication with each other through a bore 42 having different diameters (FIGS. 3 and 5) with the bore 42 being adapted house valves of the two types illustrated in FIGS. 6 and 7.
  • valve 6 is illustrated a valve formed by four components 43-44-45-46, which provides an access for supply of the fluid from the passage 30 to the passage 38 and prevents its retum.
  • The'fluid from the passage 30 traversing holes 47 of the component 44 opens the valve head 43 by overcoming the action of spring 46 and thus reaches the bridging passagev 38.
  • the socket 45 serves for housing the spring 46 but above all constantly keeps closed the passage between the bridging passage 41 and the bridging passage 38.
  • FIG. 7 is illustrated a valve formed by three components 48-49-50 which provides an access for supply of the fluid from the passage 41 to the passage 38 and prevents its return.
  • the fluid from the passage 41 lifts the valve head 48, overcoming the action of spring 50, thereby passing directly to the passage 38.
  • the component 49 Apart from housing the spring 50, thereby the component 49 primarily serves to constantly keep closed the passage between the passage 30 and passage 38. It is important to note that although the component 49 bars communication between the passages 30 and 38, it does not completely obstruct the passage 30 (FIG. 3), allowing the fluid to flow equally traversing all the elements 8-9-10-11.
  • the two valves may be installed at will in the bore 42 of each element.
  • FIG. 3 In FIG. 3 is shown a normal cursor 21 for a control of the double-action type.
  • FIG. 8 is disclosed a cursor 62 also appropriate for control of a double-acting device but provided with an internal passage to carry the discharge coming from the receiving machine, for supply in series of the following element.
  • the fluid may reach the bridging channels or passages 38 of each compartment through the nonretum valve head 43 (FIG. 6). Considering that all the openingsor ports 36 and 37 are covered by the cursors in the idle position and that the passage 30 is a dead end, it is evident that the fluid fed to the passage 30 is held up when the cursors are in the idle position (FIG. 3).
  • the fluid traversing the passage 28 may pass from the forked portions 39-40 to the central passage 28 (FIG. 4) inasmuch as the cursors in the idle'position leave the ports 39-40 uncovered (FIG. 3). Accordingly, the fluid may traverse all the elements 8-9-10-11 and reach the chamber 27 and may issue from the latter chamber towards the tank through the outflow connector 7.
  • the central passage 28 is closed and communication between the port 37 and the annular opening 34 is established at the same time; accordingly, the fluid will traverse the supply path to the return connector 14 (FIG. 3) from the inflow connector 6 to the inlet chamber 29, to the passage 30 (FIG. 5) through the valve head 43 (FIG. 6) to the bridging passage 38, the port 37, the annular opening 34, the passage 32 and to the return connector 14.
  • the same displacement establishes communication between the annular opening 33 and the passage 26, placing the delivery connector 13 in communication with the outflow.
  • each element In the bore 42 of each element is installed the nonretum valve illustrated in FIG. 7.
  • the fluid fed into the distributor by the inflow connector 6 reaches the chamber 29 and from the latter chamber the passages 30 and 28.
  • the entire length of the passage 30 is traversed by the fluid inasmuch as the component does not wholly obstruct the passage 31) (FIG. 7) but the same passage 30 will not perform any feed since all the passages from the passage 38 to the passages 38 are stopped by the components 19.
  • the closure of the central passage 28 is equally obtained, for example, by moving the same cursor of FIG. 3 towards the left again as previously.
  • the fluid (unable to traverse the wholly closed passage 30) opens the nonreturn valve head 48 (FIG. 7) overcoming the force of the spring 50, and reaches the bridging passage 38 from which it may equally supply the connectors delivery and return 13 and 14 precisely described in the preceding paragraph with respect to the feed of the element 8 (FIG. 3).
  • the only element to be supplied is in fact the element 8 even if the other cursors of the elements 9-10-11 are operated.
  • an actuation of the cursor towards the left causes the outward feed of the fluid issuing from the connector 14 and simultaneously the return of the fluid from the connector 13 for discharge through the passage 26 to the outflow connector 7.
  • an actuation of the cursor towards the right causes outward feed in the connector 13 and the simultaneous return of the fluid from the connector 14, again towards the outflow connector 7, through the passage 25. Consequently, when actuating any cursor, a return flow is always available, which is discharged through the passages 25 or 26 (FIGS. 3-6).
  • the special cursor 62 (FIG. 8) internally comprises two axial bores 51-52. Towards the center of the cursor, the bore 52 is in communication with four radial bores 53 and the bore 51 with four other radial bores 541. Towards the extremity of the cursor at one side, the bore 52 leads to four radial bores 55, in a symmetrical manner, the bore 51 leads to four bores 56. Close to the four bores 55 and 56 respectively, the bore 52 and 51 have two nonreturn valves 58 and 59 which ensure that the fluid can flow only in directions denoted by arrows 60-61 and never in the opposite directions.
  • a six-element distributor it is possible to have one or two elements supplied singly following others supplied in parallel.
  • the same unit 12 it is intended to have the element 9 supplied in series with the element 8 and the element 11 supplied in series with the element 10 while at the same time having the elements 8 and 10 connected in parallel to each other.
  • This is obtained by installing in elements 8 and 10 two cursors of the type shown in FIG. 8 and in elements 9 and 11 two nonretum valves of the FIG. 7 type; the other valves installed are of the FIG. 6 type and the other cursors of 5 the FIG. 3 type.
  • a valve for distributing fluid to a system of fluid-actuated machines comprising a monobloc having fluid inflow and outflow connectors, a plurality of spaced compartments located between the inflow and outflow connectors and extending transversely with respect thereto, each of said compartments having connectors for the delivery and return of fluid to an individual machine of said system, first passage means for distributing fluid equally to said compartments, each compartment having a cavity to establish a second passage means for supplying fluid to said compartments, said second passage means being communicable with said fluid outflow connector, a pair of channels communicable with each of said compartments to exhaust fluid therefrom, first valve means in said compartment and movable therein to direct the flow in said second passage means, and second valve means provided between each compartment connectors and interposable between said first passage means and said compartment to control the flow of fluid to each machine whereby said machines may be actuated in series-parallel, in series or in parallel, said first valve means and second valve means each being of different types whereby proper selection and positioning of the selected valve
  • valve as claimed in claim 1 wherein said second valve means'is a nonreturn valve for controlling the flow of fluid to establish the proper system sequence of operation.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Multiple-Way Valves (AREA)
  • Valve Housings (AREA)
  • Check Valves (AREA)
US2067*[A 1969-01-13 1970-12-12 Valve for distributing fluid to a system of fluid-actuated machines Expired - Lifetime US3635244A (en)

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Application Number Priority Date Filing Date Title
IT150469 1969-01-13

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US3635244A true US3635244A (en) 1972-01-18

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DE (1) DE2001180C3 (de)
FR (1) FR2030140A7 (de)
GB (1) GB1301462A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167197A (en) * 1970-10-20 1979-09-11 Toshio Maki Directional change-over valve
US20060191582A1 (en) * 2003-06-04 2006-08-31 Bosch Rexroth Ag Hydraulic control arrangement
US10619750B2 (en) * 2014-06-25 2020-04-14 Parker-Hannifin Corporation Reverse flow check valve in hydraulic valve with series circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013101717U1 (de) 2013-04-22 2013-04-25 Bürkert Werke GmbH Kanalmodulsystem

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651324A (en) * 1949-11-01 1953-09-08 New York Air Brake Co Multiple control valve
US3000397A (en) * 1959-08-24 1961-09-19 Parker Hannifin Corp Valve assembly
US3008488A (en) * 1959-11-16 1961-11-14 New York Air Brake Co Control valve
US3134402A (en) * 1962-04-30 1964-05-26 Hydraulic Unit Specialities Co Hydraulic control valve having void control means
US3534774A (en) * 1968-11-14 1970-10-20 Koehring Co Pressure compensated control valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651324A (en) * 1949-11-01 1953-09-08 New York Air Brake Co Multiple control valve
US3000397A (en) * 1959-08-24 1961-09-19 Parker Hannifin Corp Valve assembly
US3008488A (en) * 1959-11-16 1961-11-14 New York Air Brake Co Control valve
US3134402A (en) * 1962-04-30 1964-05-26 Hydraulic Unit Specialities Co Hydraulic control valve having void control means
US3534774A (en) * 1968-11-14 1970-10-20 Koehring Co Pressure compensated control valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167197A (en) * 1970-10-20 1979-09-11 Toshio Maki Directional change-over valve
US20060191582A1 (en) * 2003-06-04 2006-08-31 Bosch Rexroth Ag Hydraulic control arrangement
US7628174B2 (en) * 2003-06-04 2009-12-08 Bosch Rexroth Ag Hydraulic control arrangement
US10619750B2 (en) * 2014-06-25 2020-04-14 Parker-Hannifin Corporation Reverse flow check valve in hydraulic valve with series circuit

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Publication number Publication date
GB1301462A (de) 1972-12-29
DE2001180A1 (de) 1970-11-19
DE2001180B2 (de) 1973-06-14
FR2030140A7 (de) 1970-10-30
DE2001180C3 (de) 1973-12-20

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