FI75308B - HYDROSTATISKT DRIVSYSTEM. - Google Patents

HYDROSTATISKT DRIVSYSTEM. Download PDF

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Publication number
FI75308B
FI75308B FI850335A FI850335A FI75308B FI 75308 B FI75308 B FI 75308B FI 850335 A FI850335 A FI 850335A FI 850335 A FI850335 A FI 850335A FI 75308 B FI75308 B FI 75308B
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FI
Finland
Prior art keywords
hydraulic
hydraulic motors
valve
motors
vehicle
Prior art date
Application number
FI850335A
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Finnish (fi)
Swedish (sv)
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FI850335L (en
FI75308C (en
FI850335A0 (en
Inventor
Matts Carlson
Original Assignee
Ky Carlson Project Kb
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Filing date
Publication date
Application filed by Ky Carlson Project Kb filed Critical Ky Carlson Project Kb
Publication of FI850335A0 publication Critical patent/FI850335A0/en
Priority to FI850335A priority Critical patent/FI75308C/en
Priority to HU861121A priority patent/HUT43527A/en
Priority to AU53948/86A priority patent/AU5394886A/en
Priority to EP19860901077 priority patent/EP0213151A1/en
Priority to PCT/FI1986/000009 priority patent/WO1986004306A1/en
Priority to JP50091186A priority patent/JPS62501831A/en
Priority to BR8605003A priority patent/BR8605003A/en
Publication of FI850335L publication Critical patent/FI850335L/en
Priority to FI863716A priority patent/FI863716A0/en
Priority to DK454986A priority patent/DK454986D0/en
Priority to NO863807A priority patent/NO863807L/en
Publication of FI75308B publication Critical patent/FI75308B/en
Application granted granted Critical
Publication of FI75308C publication Critical patent/FI75308C/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0015—Disposition of motor in, or adjacent to, traction wheel the motor being hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H39/02—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motors at a distance from liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
    • F16H61/452—Selectively controlling multiple pumps or motors, e.g. switching between series or parallel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0046—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the vehicle body, i.e. moving independently from the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/46—Wheel motors, i.e. motor connected to only one wheel

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Control Of Fluid Gearings (AREA)

Description

7 5 3 0 87 5 3 0 8

Hydrostatiskt drivsystem - Hydrostaattinen käyttöjärjestelmäHydrostatic drive system - Hydrostaattinen käyttöjärjestelmä

Denna uppfinning avser ett hydrostatiskt drivsystem för ett slirstyrt fordon, omfattande tva reglerbara hydrau-liska pumpar företrädesvis anordnade pa en och samma drivna axel, ett par hydrauliska motorer pa fordonets bägge sidor, vilka par är anslutna till var sin hydrauliska pump, varvid varje hydraulisk motor är anordnad att driva atminstone ett h jul.This invention relates to a hydrostatic drive system for a skid steer vehicle, comprising two controllable hydraulic pumps preferably arranged on one and the same driven shaft, a pair of hydraulic motors on both sides of the vehicle, each pair connected to each hydraulic pump, each hydraulic motor is arranged to run at least one Christmas.

Tidigare kända drivsystem för slirstyrda fordon med flera än en hydraulisk motor per sida, är antingen försedda med seriekopplade eller parallellkopplade hydrauliska motorer eller eventuellt är de försedda med lika manga hydrauliska pumpar som motorer. Samtliga dessa system är begränsa-de till endast ett hastighetsomräde, vilket betydligt be-gränsar deras användningsomrade. Fordon med parallellkopplade hydrauliska motorer erhaller en stor dragkraft i samtliga hjul, men deras körhastighet är relativt lag. Pa grund av dessa omständigheter lämpar sig ett dylikt fordon bra t.ex. för tunga transporter i besvärlig terräng medan de överhu-vudtaget inte lämpar sig för framfart pä landsväg pä grund av den laga körhastigheten. Fordon med seriekopplade hyd-raulmotorer förmar däremot framföras med en dubbelt högre körhastighet än ett fordon med likadana hydraulmotorer parallellkopplade, men däremot sjunker dragkraften hos fordo-net med seriekopplade hydraulmotorer tili ungefär halften av dragkraften hos ett fordon med parallellkopplade hydraulmotorer. Fordon med seriekopplade hydraulmotorer lämpar sig därför väl för framfart pa landsväg, men för tunga transporter i besvärlig terräng räcker inte fordonets dragkraft rik-tigt tili.Previously known drive systems for slip-controlled vehicles with more than one hydraulic motor per side are either equipped with series-connected or parallel-connected hydraulic motors or, possibly, they are equipped with as many hydraulic pumps as motors. All of these systems are limited to only one speed range, which significantly limits their scope. Vehicles with parallel-coupled hydraulic motors obtain a high traction in all wheels, but their driving speed is relatively low. Due to these circumstances, such a vehicle is well suited for example. for heavy transport in difficult terrain while they are not at all suitable for road traffic on the road due to the slow driving speed. By contrast, vehicles with series-coupled hydraulic motors produce propulsion at twice the driving speed than a vehicle with similar hydraulic motors in parallel, but the traction of the vehicle with series-coupled hydraulic motors drops to about half the traction of a vehicle with parallel-coupled hydraulics. Vehicles with series-coupled hydraulic motors are therefore well suited for road travel, but for heavy transport in difficult terrain, the traction of the vehicle is not sufficient.

Nu föreliggande uppfinning har tili uppgift att astad-komma ett drivsysytem för ett slirstyrt fordon som lämpar sig lika bra för framfart i svar terräng som pa landsväg. Detta har astadkommits med ett drivsystem som kännetecknas av att de tva hydrauliska pumparna är anslutna tili respek-tive par hydraulmotorer via ett slutet rör- och ventilsys- 2 75308 tem, varvid ventilen i respektive rör- och ventilsystem är valbart inställbar i ett första läge med samma sidas hyd-raulmotorer sinsemellan parallellkopplade och ett andra läge med samma sidas hydraulmotorer sinsemellan seriekopplade. Uppfinningens övriga kännetecken framgär ur de bifogade pa-tentkraven 1-5.It is the object of the present invention to provide a drive system for a slip-guided vehicle that is as well suited for speed in response terrain as on road. This has been achieved with a drive system characterized in that the two hydraulic pumps are connected to respective pairs of hydraulic motors via a closed pipe and valve system, the valve in the respective pipe and valve system being selectively adjustable in a first position with the same side hydraulic motors between each other in parallel and a second position with the same side hydraulic motors in between series. The other features of the invention emerge from the appended claims 1-5.

I det följande skall uppfinningen närmare beskrivas under hänvisning tili ritningen, där fig.l schematiskt visar ett exempel pä ett drivsystem enligt uppfinningen, varvid för äskädlighetens skull vänstra sidans hydraulmotorer är parallellkopplade och högra sidan hydraulmotorer seriekopplade/ fig.2 visar ett exempel pä hur drivsystemet är anord-nat i ett fordon sett fran undre sidan.In the following, the invention will be described in more detail with reference to the drawing, where Fig. 1 shows schematically an example of a drive system according to the invention, for the sake of convenience the left-hand hydraulic motors are connected in parallel and the right-hand hydraulic motors are connected in series / Fig. 2 shows an example is arranged in a vehicle seen from the lower side.

Drivsystemet enligt uppfinningen omfattar tvä regler-bara hydrauliska pumpar 2,3 drivna t.ex. av en dieselmotor 4. De hydrauliska pumparna 2,3 är företrädesvis anordnade pä en och samma drivna axel. Fordonet 1 är pä bägge sidor försett med ett par hydrauliska motorer 5,6; 7,8, vilka par 5,6 och 7,8 är anslutna till var sin hydrauliska pump 2,3. Var och en av de hydrauliska motorerna 5,6; 7,8 är anordnade att driva ätminstone ett hjul 9. Manövreringen av de bäda hydrauliska pumparna sker lämpligen med en gemensam manö-verspak t.ex. i enlighet med CJS-patentet nr. 4,470,475 enligt vilket ändarna av ett vid fordonets 1 manöverspak fäst tvärstycke, medelst stavar eller vajrar är anslutna tili ma-növerorganet i respektive hydrauliska pump 2 resp.3. De bäda hydrauliska pumparna 2 och 3 ingär i var sitt slutna rör-och ventilsystem 10,11,12,13; 14,15,16,17 vilka möjliggör omkoppling melian parallellt kopplade hydraulmotorer 5,6; 7,8 och seriekopplade hydraulmotorer 5,6; 7,8. Omkopplingen sker genom att stänga eller öppna rörledningarnas 10,12,13; 14,16,17 ventiler 11,15, vilket bör ske samtidigt i de bäda systemen 10,11,12,13; 14,15,16,17 sä att antingen samtligaThe drive system according to the invention comprises two adjustable hydraulic pumps 2.3 driven e.g. of a diesel engine 4. The hydraulic pumps 2,3 are preferably arranged on one and the same driven shaft. The vehicle 1 is provided on both sides with a pair of hydraulic motors 5,6; 7.8, which pairs 5.6 and 7.8 are connected to each hydraulic pump 2.3. Each of the hydraulic motors 5,6; 7,8 are arranged to drive at least one wheel 9. The operation of the two hydraulic pumps is conveniently carried out with a common control lever, e.g. in accordance with CJS patent no. 4,470,475 according to which the ends of a crosspiece attached to the control lever of the vehicle 1, by means of rods or wires, are connected to the maneuvering means in the respective hydraulic pump 2 and 3 respectively. The two hydraulic pumps 2 and 3 are included in their closed pipe and valve systems 10,11,12,13; 14,15,16,17 enabling switching between parallel coupled hydraulic motors 5,6; 7.8 and in series hydraulic motors 5.6; 7.8. The switching is done by closing or opening the pipes 10,12,13; 14,16,17 valves 11,15, which should occur simultaneously in both systems 10,11,12,13; 14,15,16,17 so that either all

IIII

3 75308 hydraulmotorer 5,6,7,8 är parallellkopplade eller samtliga hydraulmotorer 5,6,7,8 är seriekopplade. I annat fall blir fordonet helt manöverodugligt. Pa översiktsbilden i fig. 1 är visserligen vänstra sidans hydraulmotorer 5,6 parallellkopplade medan högra sidans hydraulmotorer 7,8 Mr seriekopplade, men detta har gjorts endast för att i samma figur as-kadliggöra bada alternativen.3 75308 hydraulic motors 5,6,7,8 are connected in parallel or all hydraulic motors 5,6,7,8 are connected in series. Otherwise, the vehicle becomes completely maneuverable. In the overview picture in Fig. 1, the left side hydraulic motors 5,6 are connected in parallel while the right side hydraulic motors 7,8 Mr are connected in series, but this has been done only to make both alternatives in the same figure as shady.

De bägge hydrauliska pumparnas 2,3 ena anslutningsöpp-ning 18,19 Mr kopplad till en ventilförsedd rörledning 10, 14 som sammanbinder motsvarande anslutningsöppningar 20,21; 22,23 i respektive sidas hydraulmotorer 5,6; 7,8. De hydrauliska pumparnas 2,3 andra tva anslutningsöppningar 24,25 Mr kopplade till var sin ventilförsedda rörledning 12, 16 som sammanbinder de tva andra anslutningsöppningarna 26,27; 28,29 i respektive sidas hydraulmotorer 5,6; 7,8. I systemet ingar ytterligare en ventilförsedd rörledning 13,16 per sida som sammanbinder den ena hydraulmotorns 5;7 utloppsöppning 20; 22 med den andra hydraulmotorns 6;8 inloppsöppning 27;29. För att systemet skall fungera bör respektive hyd-raulpumps 2,3 tva anslutningsöppnigar 18,24; 19,25 vara kopplade till ifragavarande rörledningar 10,12 resp. 14,16 pä motsatta sidor om ventilorganen 10 resp. 15 i resp. slut-na rör- och ventilsystem.The two connection openings 18,19 Mr of the two hydraulic pumps 2,3 are connected to a valve-provided conduit 10, 14 which connects the corresponding connection openings 20,21; 22.23 in the respective side hydraulic motors 5.6; 7.8. The second two connection ports of the hydraulic pumps 2,3, 2, 24, 25 are connected to each of their valved pipes 12, 16 which connect the two other connection ports 26,27; 28.29 in the respective side hydraulic motors 5.6; 7.8. The system further includes a valve-provided conduit 13, 16 per side which connects the outlet port 20 of one hydraulic motor 5; 7; 22 with the inlet opening 27; 29 of the other hydraulic motor 6; 8. For the system to work, the respective hydraulic pumps 2.3 should open two connection openers 18,24; 19.25 be connected to the relevant pipelines 10,12 and 10,12, respectively. 14,16 on opposite sides of the valve means 10 and 10, respectively. 15 in resp. closed pipe and valve systems.

Da hydraulmotorerna Mr parallellkopplade Mr ventilerna 11 och 15 ställda sä att rörledningarna 10 och 12 samt 14 och 16 Mr öppna medan rörledningarna 13 och 17 Mr stängda. Om hydraulpumparna 2 och 3 t.ex. Mr inställda att framdriva hydraulvätska frän anslutningsöppningen 18 resp. 19 till rörledningen 10 resp. 14 fördelas hydraulvMtskeflödet i var-dera rörsystemen sa att ungefär hälften av vätskan strömmar till hydraulmotorns 5 resp. 7 anslutningsöppning 20 resp. 22 medan andra hälften strömmar tili hydraulmotorns 6 resp. 8 anslutningsöppning 21 resp 23 och driver respektive hydraul-motor 5,6,7 och 8 sa att fordonets samtliga hjul 9 försätts att rotera med lika stor och lika riktad hastighet. Frin 4 75308 hydraulmotorernas anslutningsöppningar 26 och 27 resp. 28 och 29 leds hydraulvätskeströmmarna längs rörledningen 12 resp. 16 till hydraulpumpens anslutningsöppning 24 resp. 25.When the hydraulic motors Mr parallel connected Mr valves 11 and 15 set so that the pipelines 10 and 12 and 14 and 16 Mr open while the pipelines 13 and 17 Mr closed. If the hydraulic pumps 2 and 3 e.g. Mr. set to propel hydraulic fluid from the connection opening 18 and 18, respectively. 19 to the pipeline 10 and 10 respectively. 14, the hydraulic fluid flow is distributed in each of the pipe systems, so that about half of the fluid flows to the hydraulic motor 5 and 5 respectively. 7 connection opening 20 and 20, respectively. 22 while the other half flows to the hydraulic motor 6 and 6 respectively. 8 and the respective hydraulic motor 5,6,7 and 8 so that all the wheels 9 of the vehicle are rotated at the same speed and direction. Frin 4 75308 hydraulic motors connection openings 26 and 27, respectively. 28 and 29, the hydraulic fluid streams are conducted along the pipeline 12 and 12, respectively. 16 to the hydraulic pump connection opening 24 and 16, respectively. 25th

Da hydraulmotorerna skall kopplas i serie installs ventilerna 11 och 15 sa att de avstänger rörledningarna 10 och 12 resp. 14 och 16 samt öppnar rörledningen 13 resp. 17. Om hydraulpumparna 2 och 3 är inställda att framdriva hyd-raulvätska frän anslutningsöppningen 18 resp. 19 till rörledningen 10 resp. 14 leds hela vätskeströmmen via nämnda rörledning till hydraulmotorns 6 resp. 8 anslutningsoppning 21 resp. 23 och försätter respektive hydraulmotor i rotation. Fran hydraulmotorn 6 resp. 8 leds hydraulvätskeströmmen vidare via rörledningen 13 resp. 17 till hydraulmotorns 5 resp. 7 anslutningsöppning 20 resp. 22 och försätter respektive hydraulmotor 5 resp. 7 och saledes motsvarande hjul 9 i rotation. Fran hyraulmotorn 5 resp 7 leds hydraulvätskeströmmen sedan tillbaks till respektive hydraulpump 2 resp.3 via rörledning 12 resp. 16.When the hydraulic motors are to be connected in series, the valves 11 and 15 are installed so that they shut off the pipelines 10 and 12 respectively. 14 and 16 and open the pipeline 13 and 13 respectively. 17. If the hydraulic pumps 2 and 3 are set to propel hydraulic fluid from the connection opening 18 and 18, respectively. 19 to the pipeline 10 and 10 respectively. 14, the entire fluid flow is conducted via said pipeline to the hydraulic motor 6 and 6 respectively. 8 connection opening 21 and 21 respectively. 23 and rotates the respective hydraulic motor. From the hydraulic motor 6 and 6 respectively. 8, the hydraulic fluid stream is passed through the conduit 13 and 8, respectively. 17 to the hydraulic motor 5 and 5 respectively. 7 connection opening 20 and 20, respectively. 22 and operate the respective hydraulic motor 5 and 5 respectively. 7 and thus the corresponding wheel 9 in rotation. From the hydraulic motor 5 and 7 respectively, the hydraulic fluid stream is then returned to the respective hydraulic pump 2 and 3 via pipeline 12 and 12, respectively. 16th

Ett problem vid parallellkopplade hydraulmotorer är, att huvudsakligen hela drivkraften leds till den hydraulmotor som för tillfället bjuder pä minsta motstand, t.ex. en hydraulmotor som driver ett hjul som misst kontakten med un-derlaget. Detta resulterar i att den andra av de parallellkopplade hydraulmotorerna upphör att rotera. För att elimi-nera detta problem maste vanligtvis nagon form av diffspärr användas. Detta problem har vi lost genom att förse den ytt-re mäntein av varje hydraulmotors roterbara parti med en kuggkrans eller liknande, varvid pa bäda sidor om fordonet 1 är förd en ändlös kedja 30,31 over nämnda kuggkransar, vil-ket resulterar i att samtliga hjul 8 pa respektive sida av fordonet försätts att rotera med sinsemellan lika hastighet, oberoende av hur motorerna är kopplade och oberoende av ytt-re faktorer sasom belastning och liknande. För att undvika nedsmutsning av kedjorna samt för att minska risken för olyckstillbud är nämnda kuggkransar och kedjor 30,31 lampii-One problem with parallel-coupled hydraulic motors is that essentially all of the driving force is fed to the hydraulic motor which currently offers the least resistance, e.g. a hydraulic motor that drives a wheel that lost contact with the support. This results in the other of the parallel-coupled hydraulic motors ceasing to rotate. In order to eliminate this problem, some form of diff barrier usually needs to be used. We have solved this problem by providing the outer manifold of each rotary portion of each hydraulic motor with a gear ring or the like, whereby on both sides of the vehicle 1 an endless chain 30,31 is passed over said gear rings, which results in all wheels 8 on each side of the vehicle are rotated at equal speed, regardless of how the motors are coupled and independent of external factors such as load and the like. In order to avoid contamination of the chains and to reduce the risk of accidents, said gear rings and chains are 30.31 lamps.

IIII

7 5 3 0 8 gen inkapslade.7 5 3 0 8 gene encapsulated.

För att underlätta manövreringen av drivsystemets ven-tiler är samtliga ventiler 11,15 lämpligen anordnade i en enda enhet sa, att vardera sidans ventiler kan manövreras med ett och samma manöverorgan. Omkopplingen kan ske helt mekaniskt eller eventuellt pa hydraulisk eller elektromagne-tisk väg. Ventilerna utgörs t.ex. av kulventiler, men även andra typer av ventiler kan komma ifraga.In order to facilitate the operation of the valves of the drive system, all valves 11,15 are preferably arranged in a single unit such that each side valve can be operated with one and the same actuator. The switching can be done entirely mechanically or possibly by hydraulic or electromagnetic path. The valves comprise e.g. of ball valves, but other types of valves may also be considered.

Tva eller eventuellt alla fyra hydraulmotorer 5,6,7 och 8 kan lämpligen vara anordnade driva hjulen 9 i en bog-gieenhet 32. Härvid är respektive hydraulmotor 5,6,7,8 fö-reträdesvis anordnad koncentriskt med boggieenhetens 32 svängaxel, varvid ifrägavarande hydraulmotor via tva ändlösa kedjor 33 är anordnad att överföra drivkraft tili respektive boggieenhets 32 tva hjul 9.Preferably, two or possibly all four hydraulic motors 5,6,7 and 8 may be arranged to drive the wheels 9 in a bogie unit 32. In this case, the respective hydraulic motor 5,6,7,8 is preferably arranged concentrically with the pivot axle of the bogie unit 32, whereby hydraulic motor via two endless chains 33 is arranged to transmit driving force to the two wheels 9 of the bogie unit 32 respectively.

Claims (5)

1. Hydrostaattinen käyttöjärjestelmä liukuohjattua ajoneuvoa (1) varten käsittäen kaksi säädettävää, edullisesti yhdelle ja samalle käytetylle akselille järjestettyä hydraulista pumppua (2,3), kaksi hydraulista moottoria (5,6; 7,8) ajoneuvon kummallakin puolella, jotka parit (5,6; 7,8) ovat liitetyt kukin omaan hydrauliseen pumppuun (2,3), jolloin jokainen hydraulinen moottori (5,6,7,8) on järjestetty käyttämään ainakin yhtä pyörää (9), tunnettu siitä, että molemmat hydrauliset pumput (2,3) ovat liitetyt vastaavaan hydraulimoottoripariin (5,6; 7,8) suljetun putki- ja venttiilisysteemin (10,11,12,13; 14,15,16,17) kautta, jol loin venttiili (11, 15) vastaavassa putki- ja venttiilisys-teemissä (10,11,12,13 vast. 14,15,16,17) on valinnanvaraisesti asetettavissa ensimmäiseen asentoon, jossa saman puolen hydraulimoottorit (5,6; 7,8) ovat keskenään rinnakkain-kytketyt, ja toiseen asentoon, jossa saman puolen hydraulimoottorit (5,6; 7,8) ovat keskenään sarjaankytketyt.A hydrostatic drive system for a skid steered vehicle (1) comprising two adjustable hydraulic pumps (2,3), preferably arranged on one and the same driven axle, two hydraulic motors (5,6; 7,8) on each side of the vehicle, which pairs (5, 6; 7,8) are each connected to their own hydraulic pump (2,3), each hydraulic motor (5,6,7,8) being arranged to drive at least one wheel (9), characterized in that both hydraulic pumps (2) , 3) are connected to the respective pair of hydraulic motors (5,6; 7,8) via a closed pipe and valve system (10,11,12,13; 14,15,16,17), whereby the valve (11, 15) in the respective pipe - and venttiilisys-system it (. 10,11,12,13, respectively 14,15,16,17) is optionally positionable in a first position, in which the same side of the hydraulic motors (5,6; 7,8) are mutually parallel-connected, and a second position, in which the same side of the hydraulic motors (5,6; 7,8) are mutually connected in series. 2. Patenttivaatimuksen 1 mukainen hydrostaattinen käyttöjärjestelmä, tunnettu siitä, että kummankin hydraulipumpun (2,3) molemmat liitäntäaukot (18,24; 19,25) ovat kytketyt omaan venttiilillä varustettuun putkijohtoon (10,12; 14,16) joka yhdistää vastaavan puolen hydraulimoot-torien 5,6; 7,8) vastaavat liitäntäaukot (20,21; 26,27 vast. 22.23; 28,29) jonka lisäksi järjestelmässä on kummallakin puolella venttiilillä varustettu putkijohto (13,17) joka2. claimed in claim 1 hydrostatic drive system according to, characterized in that both hydraulic pumps (2,3), the two connecting openings of the conduit provided with a (18,24 19,25) are connected to a separate valve (10,12; 14,16) connecting the respective side hydraulimoot markets 5.6; 7,8) corresponding connection openings (20,21; 26,27 vs. 22.23; 28,29) in addition to which the system has a pipeline (13,17) with a valve on each side which
FI850335A 1985-01-25 1985-01-25 HYDROSTATISKT DRIVSYSTEM. FI75308C (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FI850335A FI75308C (en) 1985-01-25 1985-01-25 HYDROSTATISKT DRIVSYSTEM.
AU53948/86A AU5394886A (en) 1985-01-25 1986-01-24 Hydrostatic drive system
HU861121A HUT43527A (en) 1985-01-25 1986-01-24 Hydrostatic drive for slip-controlled vehicle
EP19860901077 EP0213151A1 (en) 1985-01-25 1986-01-24 Hydrostatic drive system
PCT/FI1986/000009 WO1986004306A1 (en) 1985-01-25 1986-01-24 Hydrostatic drive system
JP50091186A JPS62501831A (en) 1985-01-25 1986-01-24 hydraulic drive
BR8605003A BR8605003A (en) 1985-01-25 1986-01-24 HYDROSTATIC DRIVING SYSTEM
FI863716A FI863716A0 (en) 1985-01-25 1986-09-12 HYDROSTATISKT DRIVSYSTEM.
DK454986A DK454986D0 (en) 1985-01-25 1986-09-24 HYDRAULIC ENGINE
NO863807A NO863807L (en) 1985-01-25 1986-09-24 HYDROSTATIC DRIVE SYSTEM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI850335 1985-01-25
FI850335A FI75308C (en) 1985-01-25 1985-01-25 HYDROSTATISKT DRIVSYSTEM.

Publications (4)

Publication Number Publication Date
FI850335A0 FI850335A0 (en) 1985-01-25
FI850335L FI850335L (en) 1986-07-26
FI75308B true FI75308B (en) 1988-02-29
FI75308C FI75308C (en) 1988-06-09

Family

ID=8520262

Family Applications (1)

Application Number Title Priority Date Filing Date
FI850335A FI75308C (en) 1985-01-25 1985-01-25 HYDROSTATISKT DRIVSYSTEM.

Country Status (8)

Country Link
EP (1) EP0213151A1 (en)
JP (1) JPS62501831A (en)
AU (1) AU5394886A (en)
BR (1) BR8605003A (en)
DK (1) DK454986D0 (en)
FI (1) FI75308C (en)
HU (1) HUT43527A (en)
WO (1) WO1986004306A1 (en)

Families Citing this family (8)

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US5204329A (en) * 1990-06-11 1993-04-20 Du Pont Merck Pharmaceutical Company Treatment of organ transplantation rejection
IT1249396B (en) * 1991-02-05 1995-02-23 Merlo Ind Metalmecc MECHANICAL TRANSMISSION FOR HYDROSTATIC DRIVE OFF-ROAD MACHINES.
ES2177379B1 (en) * 2000-01-27 2004-09-16 Universitat Politecnica De Catalunya ACTIVE HYDROSTATIC TRANSMISSION SYSTEM FOR ARTICULATED VEHICLES WITH TRACTION ON THE FOUR WHEELS.
US7845443B2 (en) * 2007-09-25 2010-12-07 David K. Liberty Low surface impact skid steered all terrain vehicle
PL212942B1 (en) 2008-05-14 2012-12-31 Jacek Zaleski Stepless, hydrostatic gear of SLGB rotary motion
CN103600655B (en) * 2013-11-22 2017-02-08 华南农业大学 Front axle swinging type four-wheel drive chassis steering system for paddy fields
WO2016162733A1 (en) * 2015-04-10 2016-10-13 Abbasszadeh Mohammad Taghi Hydro-motors system with variable combination units
WO2022208128A1 (en) * 2021-03-29 2022-10-06 Роман ШТЫЛЕВСКИЙ Hydraulic drive for the driven wheels of a motor vehicle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE315509B (en) * 1964-09-24 1969-09-29 Atlas Copco Ab
GB1128744A (en) * 1966-03-01 1968-10-02 Danfoss As Hydraulic pressure stabilising system for a plurality of hydraulic motors
CH453099A (en) * 1966-06-27 1968-05-31 Simit Societa Per Azioni System with hydraulic transmission for propulsion of vehicles at different speeds
US3543645A (en) * 1967-12-14 1970-12-01 Danfoss As Control equipment for hydrostatic drive of a vehicle
BE877321A (en) * 1979-06-27 1979-12-27 Hainaut Sambre Sa IMPROVEMENT IN WHEEL VEHICLES.

Also Published As

Publication number Publication date
DK454986A (en) 1986-09-24
FI850335L (en) 1986-07-26
BR8605003A (en) 1987-05-05
DK454986D0 (en) 1986-09-24
WO1986004306A1 (en) 1986-07-31
JPS62501831A (en) 1987-07-23
HUT43527A (en) 1987-11-30
EP0213151A1 (en) 1987-03-11
AU5394886A (en) 1986-08-13
FI75308C (en) 1988-06-09
FI850335A0 (en) 1985-01-25

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