EP0227716B1 - Agencement de commutation de l'alimentation hydraulique des agregats d'une chargeuse - Google Patents

Agencement de commutation de l'alimentation hydraulique des agregats d'une chargeuse Download PDF

Info

Publication number
EP0227716B1
EP0227716B1 EP19860903295 EP86903295A EP0227716B1 EP 0227716 B1 EP0227716 B1 EP 0227716B1 EP 19860903295 EP19860903295 EP 19860903295 EP 86903295 A EP86903295 A EP 86903295A EP 0227716 B1 EP0227716 B1 EP 0227716B1
Authority
EP
European Patent Office
Prior art keywords
control valve
pump
loader
cylinder
main control
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.)
Expired
Application number
EP19860903295
Other languages
German (de)
English (en)
Other versions
EP0227716A1 (fr
Inventor
Otto Dr.-Ing. Dingerkus
Reinhold Rausch
Wilfried Dipl.-Ing. Gräf
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.)
Rudolf Hausherr & Sohne & Co KG GmbH
Rudolf Hausherr and Sohne GmbH and Co KG
Original Assignee
Rudolf Hausherr & Sohne & Co KG GmbH
Rudolf Hausherr and Sohne GmbH and Co KG
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 Rudolf Hausherr & Sohne & Co KG GmbH, Rudolf Hausherr and Sohne GmbH and Co KG filed Critical Rudolf Hausherr & Sohne & Co KG GmbH
Publication of EP0227716A1 publication Critical patent/EP0227716A1/fr
Application granted granted Critical
Publication of EP0227716B1 publication Critical patent/EP0227716B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps

Definitions

  • the invention relates to a circuit arrangement for the hydraulic loading of the units of a loader, such as traction motors, loading shovel equipped with impact devices, cylinder-piston units or the like.
  • Loaders of this type are advantageously used for treading the sole in pit rooms; however, these are also suitable for performing work above ground.
  • Loaders which each have their own energy source in the form of a pump for each consumer group, such as traction motors, cylinder-piston working cylinders and for the impact devices of the loading shovel. It is known to design these pumps in a power-controlled manner for the ancillary motors or in a pressure-controlled manner for the cylinder-piston units and the impact devices in order to be able to adapt them to the respective requirements.
  • this known solution proves to be disadvantageous because the total installed power is very high, because it results from the sum of all installed pumps, for which power must be kept available. The entire installation is therefore very costly and space-consuming.
  • a circuit arrangement for a charger according to the preamble of claim 1 is known from US-A-3606049.
  • the invention has for its object to provide a circuit arrangement of the type mentioned, which allows with a minimum of installed power to fully cover all load cases occurring in the practice of a loader at any time.
  • the pumps are connected to a main control valve, in the first position of which the pump with the higher output with the control valve for the traction motors and the pump with the lower output with the control valve for the cylinder-piston units or. Like. Is connected, while in the second position of the main control valve, the pump with the higher power with the control valves for the cylinder-piston units or the like. As well as the impact devices of the loading shovel and the pump with the lower power with the control valve for the traction motors communicates. This configuration ensures that the pump applies the higher power to the traction motors while the loader is traveling, i.e.
  • the loader runs at high speed, while at the same time the cylinder-piston units are fed by the pump with the lower output.
  • the impact devices of the loading shovel which are not required while the loader is moving, are not subjected to any action in this first position of the main control valve. If the loader has reached the lowering shock or the rock with the edge of its loading shovel, the operator or automatically due to the increased load pressure on the traction motors switches the main control valve to its second position, with the result that the impact devices are now switched from the pump with the higher one Power is applied so that the smashing and loosening work can be carried out.
  • the cylinder-piston units of the charger are connected to this pump stage.
  • the traction motors are in this second position of the main control valve in connection with the pump with the low power, so that the loader only moves at a low driving speed, which is however completely sufficient during the loosening or loading work.
  • the pump with higher power with 2 and the pump with lower power with 3 is designated.
  • the two pumps 2, 3 are connected to the main control valve 4.
  • the pump 2 with the higher output is connected to the control valve 5 for the driving motors of the loader (not shown), while the pump 3 with the lower output is connected to the control valve 6 for the individual cylinders.
  • Piston units of the loader is connected.
  • the connection to the control valve 7 for the impact devices of the loading shovel of the loader is depressurized because these are not required during the movement of the loader.
  • the pump 2 with the higher output to the control valves 6 and 7 is once for the cylinder-piston units and the other for the impact devices switched on, so that they are subjected to the higher power, especially the impact devices, which they need to loosen and smash.
  • the pump 3 with the lower power is connected in the position to the control valve 5 for the driving motors, so that the loader can only be moved at a lower driving speed.
  • the main control slide 4 is switched back to its first position, so that the starting situation described above results.
  • the traction motors are again acted upon by the pump 2 with the higher power, ie the loader can be moved to the unloading point at high speed while the Impact devices are completely switched off and the cylinder-piston units of the loader are acted upon by the pump 3 with the low power.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

Afin d'obtenir un agencement de commutation de l'alimentation hydraulique des agrégats d'une chargeuse, tels que des moteurs de traction, des chargeurs à benne frontale pourvus de concasseurs, des unités de cylindre et de piston et similaires, qui puisse couvrir tous les besoins de chargement auxquels doit faire façe une chargeuse dans la pratique, à n'importe quel moment et avec un minimum d'installations, cet agencement de commutation comprend une paire de pompes ayant des puissances diverses. Ces pompes (2, 3) sont couplées à une soupape principale de commande (4) qui, dans sa première position, relie la pompe (2) dont la puissance est la plus élevée à la soupape de commande (5) des moteurs de traction et la pompe (3) de moindre puissance à la soupape de commande (6) de l'unité de cylindre et de piston. Dans sa deuxième position, la soupape principale de commande (4) relie la pompe (2) dont la puissance est la plus élevée aux soupapes de commande (6, 7) des unités de cylindre et de piston et des concasseurs, et la pompe (3) de moindre puissance à la soupape de commande (5) des moteurs de traction.

Claims (3)

1. Circuit pour l'alimentation hydraulique des groupes moteurs d'un chargeur, tel que moteurs de propulsion, benne chargeuse munie d'appareils de percussion, unités cylindre-piston ou similaires, qui présente une double pompe (2, 3) avec deux pompes de puissance différente, caractérisé en ce que les pompes (2,3) sont branchées sur un distributeur de commande principal (4), dans la première position duquel la pompe (2) de puissance plus élevée est reliée au distributeur de commande (5) pour les moteurs de propulsion et la pompe (3) de puissance plus faible au distributeur de commande (6) pour les unités cylindre-piston, tandis que dans la deuxième position de la soupape de commande principale (4) la pompe (2) est reliée en haute puissance aux soupapes de commande (6, 7) pour les unités cylindre-piston ainsi que les appareils de percussion et la pompe (3) de puissance plus faible est reliée au distributeur de commande (5) pour les moteurs de propulsion.
2. Circuit selon la revendication 1, caractérisé en ce que la commutation du distributeur de commande principale (4) de sa première position à sa deuxième position s'effectue en fonction de la pression des moteurs de propulsion.
3. Circuit selon la revendication 1 ou 2, caractérisé en ce que la commutation du distributeur de commande principal (4) de sa première position à sa deuxième position s'effectue en fonction de la mise hors service des appareils de percussion.
EP19860903295 1985-05-08 1986-04-19 Agencement de commutation de l'alimentation hydraulique des agregats d'une chargeuse Expired EP0227716B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3516429 1985-05-08
DE19853516429 DE3516429A1 (de) 1985-05-08 1985-05-08 Schaltungsanordnung fuer die hydraulische beaufschlagung der aggregate eines laders

Publications (2)

Publication Number Publication Date
EP0227716A1 EP0227716A1 (fr) 1987-07-08
EP0227716B1 true EP0227716B1 (fr) 1989-02-08

Family

ID=6270065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860903295 Expired EP0227716B1 (fr) 1985-05-08 1986-04-19 Agencement de commutation de l'alimentation hydraulique des agregats d'une chargeuse

Country Status (4)

Country Link
EP (1) EP0227716B1 (fr)
DE (1) DE3516429A1 (fr)
SU (1) SU1595347A3 (fr)
WO (1) WO1986006772A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536931A (zh) * 2011-12-23 2012-07-04 航天长征化学工程股份有限公司 耙料机用可反转液压驱动系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728994A1 (de) * 1987-08-29 1989-03-09 Piv Antrieb Reimers Kg Werner Einrichtung zur versorgung eines hauptverbrauchers mit hydraulischem druckmittel
DE19717708C2 (de) * 1997-04-18 1999-11-18 Mannesmann Ag Hydraulischer Antrieb für ein fahrbares Arbeitsgerät

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3606049A (en) * 1969-11-12 1971-09-20 Harnischfeger Corp Horsepower limiting hydraulic control circuit
BE794481A (fr) * 1972-01-24 1973-05-16 Kubota Ltd Pelle mecanique pour travaux de terrassement
FR2250908B3 (fr) * 1973-11-14 1977-08-12 Massey Ferguson Services Nv
JPS6129813Y2 (fr) * 1980-07-07 1986-09-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536931A (zh) * 2011-12-23 2012-07-04 航天长征化学工程股份有限公司 耙料机用可反转液压驱动系统

Also Published As

Publication number Publication date
DE3516429A1 (de) 1986-11-13
WO1986006772A1 (fr) 1986-11-20
SU1595347A3 (ru) 1990-09-23
EP0227716A1 (fr) 1987-07-08

Similar Documents

Publication Publication Date Title
DE69727209T2 (de) Hydraulische antriebsvorrichtung
EP1614814A2 (fr) Excavatrice et machine pour le transfert de matériel.
DE3217527A1 (de) Steuereinrichtung fuer hydraulische doppelt wirkende arbeitszylinder
EP2233646A2 (fr) Entraînement pour une excavatrice hydraulique
DE10327132A1 (de) Hydraulikschaltung für eine Ausleger-Zylinder-Kombination, welche eine Umlauffunktion aufweist
DE102009053618A1 (de) Hydraulikantrieb mit Energierückgewinnung
DE3619639A1 (de) Anlage mit energiespeicher- und -abgabeeinrichtung
DE1926237A1 (de) Anlage zur Betaetigung hydraulischer Motoren an von einer Zugmaschine angetriebenen Zusatzaggregaten
EP3159549A1 (fr) Dispositif de recuperation d'energie hydraulique pour un engin de travail et engin de travail correspondant
DE60031545T2 (de) Schaufel
DE2613300A1 (de) Antriebssystem fuer ein fahrzeug mit fahrwerk- und hilfsantrieben, die von einem gemeinsamen antriebsmotor angetrieben werden
EP0227716B1 (fr) Agencement de commutation de l'alimentation hydraulique des agregats d'une chargeuse
EP2711469A1 (fr) Engin avec entraînement hybride
DE19831828B4 (de) Hydrauliksystem für ein Flurförderzeug
DE2354850A1 (de) Hydraulischer gelenk-fahrlader
DE2701301A1 (de) Arbeitsmaschine, wie z.b. bagger, kran o.dgl.
DE3704452C2 (fr)
DE112018001591T5 (de) Energiespeichersystem
EP0072906B1 (fr) Commande hydraulique pour décharger la pression dans un circuit hydraulique de travail
DE102012020821A1 (de) Notantrieb für ein Baugerät und Verfahren zum Betrieb des Notantriebs
AT228133B (de) Hydraulik-Bagger
DE4408984C1 (de) Hydrostatisches Antriebssystem mit reduzierter Anzahl von Hydraulikpumpen
DE2052303A1 (de) Hydraulikanlage für Planiermaschinen, Lademaschinen, Bagger und dergl
DE2856093A1 (de) Hydraulikanlage zur betaetigung von auf fahrzeugen aufgebauten arbeitsgeraeten, wie z.b. hydraulikbaggern, ladevorrichtungen usw.
DE2226632C3 (de) Hydraulische Hubwerkbaugruppe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19870423

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE GB

17Q First examination report despatched

Effective date: 19880429

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE GB

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19910228

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910412

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920419

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19920430

BERE Be: lapsed

Owner name: RUDOLF HAUSHERR & SCHNE G.M.B.H. & CO K.G.

Effective date: 19920430

GBPC Gb: european patent ceased through non-payment of renewal fee