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SE522173C2 - A priority valve - Google Patents

A priority valve

Info

Publication number
SE522173C2
SE522173C2 SE0102414A SE0102414A SE522173C2 SE 522173 C2 SE522173 C2 SE 522173C2 SE 0102414 A SE0102414 A SE 0102414A SE 0102414 A SE0102414 A SE 0102414A SE 522173 C2 SE522173 C2 SE 522173C2
Authority
SE
Sweden
Prior art keywords
flow
consumers
priority
loop
main line
Prior art date
Application number
SE0102414A
Other languages
Swedish (sv)
Other versions
SE0102414D0 (en
SE0102414L (en
Inventor
Martin Marklund
Original Assignee
Hydrauto Valves Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hydrauto Valves Ab filed Critical Hydrauto Valves Ab
Priority to SE0102414A priority Critical patent/SE522173C2/en
Publication of SE0102414D0 publication Critical patent/SE0102414D0/en
Priority to PCT/SE2002/001175 priority patent/WO2003004880A1/en
Priority to EP02739039A priority patent/EP1402187A1/en
Publication of SE0102414L publication Critical patent/SE0102414L/en
Publication of SE522173C2 publication Critical patent/SE522173C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F15B2211/3051—Cross-check valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
    • F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple output members
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/455—Control of flow in the feed line, i.e. meter-in control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve
    • F15B2211/5154—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve being connected to multiple ports of an output member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5159—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Servomotors (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

Means in the form of a monoblock (1) for distributing a flow of hydraulic fluid generated from a unit (3) to a number of consumers (n) with varying priority comprising an equal number (n) of control valves (A:1-A:n) connected to the consumers where the control valves supply the said flow of fluid to each of the said consumers via a main line (4) on which are arranged means (9, 10) and channels (11, 12, 14, 15), means (7, 8) arranged on the said main line (4) for supplying a predetermined partial flow to consumers of high priority (A:1, A:2) and a means (13) of switching between normal and reduced flow to selected consumers. The means (7, 8) comprises priority valves and to the main line (4) are arranged channels (11, 12) that form flow paths to the low priority consumers (A:3-A:n) via the flow distributors (9, 10) and a loop (14). The means (13) comprises at least one control valve arranged on the line (12).

Description

25 30 522 173 2 Det i figur I och 2 visade ventilaggregatet omfattar sex sinsemellan lika manöverventilenheter Al-A6, där den högst prioriterade ventilen benämns med A1 och därefter i fallande prioritet, av konventionell slidventiltyp som är inbyggda i ett så kallat monoblock 1, markerat med den streckprickade linjen i flgurema. Dessa ventilenheter är avsedda för arbetsmoment som sväng, lyft, vipp, teleskoperande förlängning, gripanordning och stödben. The valve assembly shown in Figures I and 2 comprises six mutually equal control valve units A1-A6, where the highest priority valve is denoted by A1 and then in descending priority, of conventional shutter valve type which are built into a so-called monoblock 1, marked with the dotted line in the ur gurema. These valve units are intended for operations such as turning, lifting, tilting, telescopic extension, gripping device and support legs.

Ventilblocket l gjuts i ett stycke och till dess ena sida är anordnad en inloppsport 2 ansluten till en pump 3 till en huvudledning 4 och en tankanslutningsport 5 ansluten till en tank 6. Inloppsporten är gemensam för alla sex manöverventilenhetema Al- A6. Före inloppsportama till ventilenhetema Al och A2 är anslutna prioritetsventiler 7 och 8.The valve block 1 is cast in one piece and to one side there is arranged an inlet port 2 connected to a pump 3 to a main line 4 and a tank connection port 5 connected to a tank 6. The inlet port is common to all six control valve units Al-A6. Prior to the inlet ports of the valve units A1 and A2, priority valves 7 and 8 are connected.

Ingående i prioritetsventilema 7 och 8 finns organ I, II vilka utgörs av flödesdelare 9 och 10 avsedda att leda flödet som inte används av A1 och A2 vidare till efterkommande ventiler.Included in the priority valves 7 and 8 are means I, II which consist of fl fate dividers 9 and 10 intended to direct fl the fate that is not used by A1 and A2 on to subsequent valves.

Prioritetsventilerna 7 och 8 är avsedda att tillse att Al och A2 alltid har tillgång till ett på förhand bestämt flöde. Resterande flöde som inte går till A1 leds genom prioritetsventilen 7 via flödesdelaren 9 till en förbiledning ll vidare till A2, det flöde som inte används av A2 leds genom prioritetsventil 8 via flödesdelare 10 och en andra förbiledning 12 till en mellan ventilenhetema A2 och A3 anordnat aggregat 13 i form av en väljarventil för manuellt val mellan normal och reducerad hastighet på ventilenhet A2 och A3. Med aggregatet 13 i sitt opåverkade läge leds oljan först från Al och A2 till enhet A3, överskottet från denna leds via en förbiledning, loop 14 tillbaks till A2 och om inte denna används vidare till A4, A5 och A6.The priority valves 7 and 8 are intended to ensure that A1 and A2 always have access to a predetermined flow. The remaining flow that does not go to A1 is led through the priority valve 7 via the fate divider 9 to a bypass ll on to A2, the fate not used by A2 is led through priority valve 8 via the fate divider 10 and a second bypass 12 to a unit arranged between the valve units A2 and A3. 13 in the form of a selector valve for manual selection between normal and reduced speed on valve unit A2 and A3. With the unit 13 in its unaffected position, the oil is first led from A1 and A2 to unit A3, the excess from this is led via a bypass, loop 14 back to A2 and if not used further on to A4, A5 and A6.

Med aggregatet 13 i påverkat läge leds flödet via en kanal 15 förbi A3, som då bara har tillgång till överskottet från Al och A2. Om inte A3 används går detta flöde till kanalen 15 varvid A4 får tillgång till allt flöde som inte Al och A2 använder samt överskottet från A3.With the unit 13 in the actuated position, the fate is led via a channel 15 past A3, which then only has access to the surplus from A1 and A2. If A3 is not used, this fate goes to channel 15, whereby A4 gets access to all fate that A1 and A2 do not use, as well as the surplus from A3.

Den föredragna utföringsfonnen fungerar enligt följande och förutsättningen är en pump 3 med 60 liters flöde per minut och en teleskopisk kranarm med följande funktioner med den högst prioriterade först: sväng Al, lyft A2, vipp A3, teleskoperande förlängning A4, gripanordning A5 och stödben A6. Om en fiinktion körs ensam så har denna tillgång till hela flödet, men prioritetsventilema 7 och 8 är anordnade att alltid vid behov leverera 20 liter per minut till sväng A1 och lyft A2. Vid norrnalläge innebär detta att 20 liter återstår till vippen A3 om sväng Al och lyft A2 körs med full hastighet. Överskottet av flöde som inte används av sväng Al och lyft A2 leds vidare i första hand till vippen A3, om inte denna används går flödet tillbaka till lyften A2 igen och därefter till efterliggande funktioner. På så sätt används hela flödet och sväng Al, lyft A2 och vipp A3 kan alltid vid behov köras samtidigt. Ûfirlivnreaflhvdrnn itrflVšbfnriaflïnelreid:IT71 1 '74 dnr . . | | n 'yfvn vill. 10 15 20 25 30 522 175 3 Föraren kan manuellt påverka en väljarventil 13 som reducerar flödet till lyften A2 och vippen A3 vid tillfällen när ett arbetsmoment kräver detta. Därmed kan sväng A1, lyft A2 och teleskoperande förlängning A4 vid behov alltid köras samtidigt. Flödet, som först passerat sväng Al och lyft A2, leds till i första hand förlängningsfunktionen A4, och vippen A3 får då bara tillgång till det flöde som inte lyfien A2 använder. Detta medför att kranarmen kan köras med begränsad hastighet och därmed mindre dynamiska belastningar i kranstrukturen. Detta innebär att det är möjligt att temporärt höja kranarmens märklast.The preferred embodiment works as follows and the premise is a pump 3 with 60 liters fl flow per minute and a telescopic crane arm with the following functions with the highest priority first: turn A1, lift A2, rocker A3, telescopic extension A4, gripper A5 and support legs A6. If an ktion injection is run alone, it has access to the entire fl fate, but the priority valves 7 and 8 are arranged to always deliver 20 liters per minute to turn A1 and lift A2 if necessary. In the normal position, this means that 20 liters remain to the rocker A3 if turn A1 and lift A2 are run at full speed. The excess of fl destiny that is not used by turn A1 and lift A2 is passed on primarily to rocker A3, if this is not used, the flow goes back to lift A2 again and then to subsequent functions. In this way, the entire fl fate is used and turn A1, lift A2 and rocker A3 can always be run at the same time if necessary. Û fi rlivnrea fl hvdrnn itr fl Všbfnria fl ïnelreid: IT71 1 '74 dnr. . | | n 'yfvn vill. 10 15 20 25 30 522 175 3 The operator can manually actuate a selector valve 13 which reduces the fate of the lift A2 and the rocker A3 at times when a working step requires it. Thus, turn A1, lift A2 and telescopic extension A4 can, if necessary, always be run simultaneously. The flow, which has first passed turn A1 and lift A2, is led to the extension function A4 in the first instance, and the rocker A3 then only has access to the fate that lyre A2 does not use. This means that the crane arm can be driven at a limited speed and thus less dynamic loads in the crane structure. This means that it is possible to temporarily raise the crane arm's rated load.

Föreliggande uppfinning är ej begränsad till det ovan beskrivna och på ritningarna visade utan kan ändras och modifieras på en rad olika sätt inom ramen för den i efterföljande patentkrav angivna uppfinningstanken.The present invention is not limited to what is described above and shown in the drawings, but can be changed and modified in a number of different ways within the scope of the inventive concept stated in the appended claims.

Claims (5)

10 15 20 25 522 173 ff Patentkrav10 15 20 25 522 173 ff Patent claim 1. Anordning utformad såsom ett block (1)för fördelning av ett från en enhet (3) genererat hydraulflöde till ett antal förbrukare (n) med olika prioritet innefattande ett lika antal (n) till förbrukarna anslutna manöverventiler (A:1-A:n) vilka via en huvudledning (4) och på denna anordnade medel (7,8), förbiledningar (11,12), en loop (14) och en kanal (15) levererar nämnda flöde till var och en av nämnda förbrukare, till nämnda medel (7, 8) anordnade organ (|,ll) för levererande av ett på förhand bestämt delflöde till högt prioriterade förbrukare (A:1,A:2) samt ett aggregat (13) för växling mellan normalt eller reducerat flöde till valda förbrukare, k ä n n e t e c k n a d av att medlen (7, 8) utgörs av prioritetsventiler, att organen (|,ll) innefattar till prioritetsventilerna anordnade flödesdelare (9, 10), att till huvudledningen (4) är anordnade förbiledningar (11,12) vilka bildar flödesväg till lågprioriterade förbrukare (A:3-Am) via flödesdelarna (9,10) och en in- respektive urkopplingsbar loop (14), samt att aggregatet (13) innefattar åtminstone en på förbiledningen (12) anordnad väljarventil för val av in- eller urkoppling av loopen (14).Device designed as a block (1) for distributing a hydraulic flow generated from a unit (3) to a number of consumers (n) with different priorities comprising an equal number (n) of control valves connected to the consumers (A: 1-A: n) which via a main line (4) and on means arranged thereon (7,8), bypass lines (11,12), a loop (14) and a channel (15) supply said flow to each of said consumers, to said means (7, 8) arranged means (|, ll) for delivering a predetermined partial flow to high priority consumers (A: 1, A: 2) and a unit (13) for switching between normal or reduced flow to selected consumer, characterized in that the means (7, 8) consist of priority valves, that the means (|, ll) comprise flow dividers (9, 10) arranged for the priority valves, that bypasses (11, 12) are arranged to the main line (4) which forms a flow path to low-priority consumers (A: 3-Am) via the flow sections (9,10) and an in- and urko switchable loop (14), and that the unit (13) comprises at least one selector valve arranged on the bypass (12) for selecting switching the loop (14) on or off. 2. Anordning enligt krav 1, k ä n n e t e c k n a d av att vid väljarventilens opåverkade läge är loopen (14) ansluten till kanalen (15) och bildar del av huvudledningen (4).Device according to claim 1, characterized in that in the unaffected position of the selector valve, the loop (14) is connected to the channel (15) and forms part of the main line (4). 3. Anordning enligt krav 1, k ä n n e t e c k n a d av att vid vâljarventilens (12) till (15) huvudledningen (4) samt att loopen (14) ansluter restflödet fràn A:2 och A:3 till kanalen (15). påverkade läge ansluter förbiledningen kanalen och bildar del avDevice according to claim 1, characterized in that at the selector valve (12) to (15) the main line (4) and that the loop (14) connects the residual flow from A: 2 and A: 3 to the duct (15). affected position, the bypass connects the channel and forms part of 4. Anordning enligt något av föregående krav, k ä n n e t e c k n a d av att väljarventilen innefattar en manuellt manövrerbar väljarventil.Device according to one of the preceding claims, characterized in that the selector valve comprises a manually operable selector valve. 5. Anordning enligt något av föregående krav, k ä n n e t e c k n a d av att anordningen är ansluten till exempelvis de olika ställ och manöverdonen hos en hydraulisk teleskopkran eller andra kranliknande konstruktioner. F!-\rlivø-NMl-nidrmlrn\\lif~tnria\fi'>l I lQbrm/ Än:- e - n . .aDevice according to one of the preceding claims, characterized in that the device is connected to, for example, the various racks and actuators of a hydraulic telescopic crane or other crane-like constructions. F! - \ rlivø-NMl-nidrmlrn \\ lif ~ tnria \ fi '> l I lQbrm / Än: - e - n. .a
SE0102414A 2001-07-05 2001-07-05 A priority valve SE522173C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0102414A SE522173C2 (en) 2001-07-05 2001-07-05 A priority valve
PCT/SE2002/001175 WO2003004880A1 (en) 2001-07-05 2002-06-18 Priority valve
EP02739039A EP1402187A1 (en) 2001-07-05 2002-06-18 Priority valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0102414A SE522173C2 (en) 2001-07-05 2001-07-05 A priority valve

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SE0102414D0 SE0102414D0 (en) 2001-07-05
SE0102414L SE0102414L (en) 2003-01-06
SE522173C2 true SE522173C2 (en) 2004-01-20

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SE0102414A SE522173C2 (en) 2001-07-05 2001-07-05 A priority valve

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EP (1) EP1402187A1 (en)
SE (1) SE522173C2 (en)
WO (1) WO2003004880A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9091284B2 (en) * 2010-07-28 2015-07-28 Illinois Tool Works Inc. Operator interface for hydraulic tool control
ITUB20160596A1 (en) * 2016-02-09 2017-08-09 Walvoil Spa HYDRAULIC VALVE SERIES AND PARALLEL WITH LOGIC SWITCHING ELEMENT

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58146630A (en) * 1982-02-25 1983-09-01 Hitachi Constr Mach Co Ltd Oil-pressure circuit for oil-pressure working machine
US5413452A (en) * 1993-03-29 1995-05-09 Case Corporation Hydraulic system for a backhoe apparatus

Also Published As

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SE0102414D0 (en) 2001-07-05
EP1402187A1 (en) 2004-03-31
SE0102414L (en) 2003-01-06
WO2003004880A1 (en) 2003-01-16

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