EP1373646B1 - Mehrzweckbaufahrzeug des schaufellader-typs - Google Patents

Mehrzweckbaufahrzeug des schaufellader-typs Download PDF

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Publication number
EP1373646B1
EP1373646B1 EP02722353A EP02722353A EP1373646B1 EP 1373646 B1 EP1373646 B1 EP 1373646B1 EP 02722353 A EP02722353 A EP 02722353A EP 02722353 A EP02722353 A EP 02722353A EP 1373646 B1 EP1373646 B1 EP 1373646B1
Authority
EP
European Patent Office
Prior art keywords
assembly
loader
directional control
shovel
control valves
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 - Lifetime
Application number
EP02722353A
Other languages
English (en)
French (fr)
Other versions
EP1373646A1 (de
Inventor
Georges Charles
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.)
Volvo Construction Equipment AB
Original Assignee
Volvo Construction Equipment 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 Volvo Construction Equipment AB filed Critical Volvo Construction Equipment AB
Publication of EP1373646A1 publication Critical patent/EP1373646A1/de
Application granted granted Critical
Publication of EP1373646B1 publication Critical patent/EP1373646B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools
    • E02F3/964—Arrangements on backhoes for alternate use of different tools of several tools mounted on one machine
    • 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
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0875—Arrangement of valve arrangements on superstructures
    • 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
    • E02F9/2004—Control mechanisms, e.g. control levers

Definitions

  • the present invention relates to the field of public works machinery, and more particularly to earth-moving machines that can work indifferently as loader as a backhoe, machines which in the following description, will be designated by the expression " loader / backhoe. "
  • This frame supports in its central part a driving and control station.
  • a loader assembly At the front of the chassis is a loader assembly and, at the rear, an excavator assembly.
  • each work tool has its own control means for feeding the hydraulic cylinders actuating the constituent elements of each work tool.
  • Each control cylinder can therefore be controlled selectively via a hydraulic distributor operable by a manipulator, manipulator which can be either a mechanical control lever and linkage, or a hydraulic control or an electrical control.
  • the document US 5,471,908 describes a machine of the loader / excavator type, the hydraulic circuit comprises a distributor dedicated to the configuration of the loader assembly, and a second distributor dedicated to the displacement of the excavator assembly, hydraulically interconnected by a priority valve.
  • the distributors controlling the loader assembly there are at least two in number, one for controlling the parallel arms articulated by articulated relative to the frame and supporting the bucket and a second distributor controlling the orientation of the bucket relative to the arms and the frame.
  • an additional command may act on the configuration of the bucket, usually called 4 in 1 command.
  • control valves of the charger assembly are therefore grouped on the chassis, and this substantially at the level of the driving members.
  • the distributors supplying the power of the control cylinders are grouped on a separate module mounted at the rear of the chassis.
  • the operator rotates his seat for the one hand, set up the lateral stabilizers, and secondly, actuate the control means of the cylinders allowing the implementation of the shovel.
  • Such a shovel assembly thus implies, in order to ensure its operation, the presence of at least six distributors, namely two for the control of the lateral stabilizers that the machine comprises, one for the control of the boom, one for the control of the arm articulated on said boom, one for the control of the articulated bucket at the end of the arm, and the last for the control of the rotation of the boom.
  • the first problem to be solved by the invention thus concerns the production of a multi-purpose machine comprising a hydraulic control system for the tools of the machine of simplified design, easy to set up and of great reliability during its operation. use.
  • Such a circuit also makes it possible to have priority steering control.
  • the invention also aims to arrange the elementary distributors so that the controls for performing the excavator function are central, while those to fulfill the loader function are distributed on both sides of the aforementioned elements.
  • the distributors supplying the cylinders that comprises the shovel assembly are manually controlled (but could also be hydraulically controlled) and the distributors of the jacks of the loader assembly are, in turn, hydraulically controlled .
  • the distributors of the loader assembly are arranged laterally with respect to those of the excavator assembly, thus making it possible to facilitate the hydraulic connection with said loader assembly which is situated at the front of the machine.
  • the invention therefore relates to a public works vehicle loader / backhoe type.
  • This machine essentially comprises a frame, designated by the general reference (1), supported by two axles (2,3), the front axle (2) being provided with steering wheels and drive (4) and the rear axle of driving wheels (5) of large diameter.
  • a heat engine which drives a gearbox with converter connected by transmission to the two front and rear axles and the hydraulic circuit for controlling the work equipment also mounted on said frame.
  • Said work equipment is, on the one hand, constituted by a loader type assembly designated by the general reference (6), mounted at the front of said frame and, on the other hand, by a "backhoe” type assembly or “Excavator”, designated by the general reference (7) mounted meanwhile at the rear of the frame.
  • the charger assembly (6) comprises two arms (8) articulated at (9) on the chassis and arranged on either side of the cover (10). These arms (8) can be moved under the action of two arm cylinders (11) also laterally on the frame (12), and whose rod acts on the intermediate portion (13) of the side arms. (8) .
  • a bucket (9) associated with rods (14,15) forming a deformable parallelogram.
  • the inclination of the bucket (9) is obtained via a jack (16).
  • the bucket (9) may optionally be constituted by an assembly comprising two distinct elements offset relative to one another, and allowing to adopt several configurations that allow it to fulfill, in addition to the loader function, that of blade of a bulldozer, or pliers, or an opening dump.
  • the shovel assembly (7) is, in turn, mounted at the rear of the frame on a rigid transverse frame (20) set back from the drive wheels (5).
  • This excavator is conventional and consists essentially of an arrow (23) associated with an arm (24) at the end of which is mounted a bucket (25).
  • the boom (23) receives a rotational movement about a vertical axis relative to the frame. Furthermore, the boom (23) is hinged relative to the frame, the arm (24) being articulated relative to the end of said boom (23) and the bucket (25) relative to the end of the arm (24).
  • two lateral stabilizers are also mounted on the frame.
  • the driving position and control of the machine is mounted on the central part of the chassis.
  • This control station thus comprises conventional driving means and manipulators, preferably of the hydraulic type, to ensure the selection of the distributors controlling the various cylinders of the charger assembly.
  • This driving position is designed so that by simply pivoting the seat, we can use the backhoe set arranged at the rear.
  • the excavator assembly is controlled by six distributors operable by individual manual controls.
  • all the distributors supplying the control cylinders of both the loader and the excavator are grouped in the form of a module (30) as shown in Figures 3 and 4.
  • This block or module (30) is mounted on a transverse beam (31) integral with the two longitudinal members constituting the frame, and this through damping assemblies for recovering the stresses experienced by said frame during work operations.
  • valve block (30) comprises six mechanically controlled distributors (30a to 30f) intended to carry out the controls of the excavator which are located at the rear of the machine.
  • a seventh distributor (38g) is also expected to originate in the event that the machine is likely to receive additional options.
  • the distributors (32,33,34) intended to feed the cylinders of the loader assembly are arranged laterally with respect to those of the shovel assembly thus facilitating the mechanical connection with the loader controls which are located at the front of the machine.
  • This circuit (35) is associated with a priority valve (37) on the direction function.
  • each of the distributors is carried out at a shared rate.
  • an electro-distributor (38) for the immobilization cylinders of the shovel is also associated with the block (30) of distributors.
  • control of the distributors is mixed, namely mechanical and hydraulic, these controls could also be performed in a fully hydraulic manner.
  • the solution according to the invention has many advantages among which we can mention ease of assembly, maintenance, account because all functions are integrated into a single block.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Shovels (AREA)

Claims (3)

  1. Mehrzweckbaufahrzeug vom Schaufellader/Radlader-Typ mit einem fahrbaren Fahrwerk, in dessen mittlerem Abschnitt ein Fahr- und Steuerstand angeordnet ist, wobei das Fahrwerk an seiner Vorderseite mit einer Radladeranordnung versehen ist und an seiner Rückseite mit einer Schaufelbagger- oder Löffelbaggeranordnung versehen ist, die unabhängig voneinander betätigbar sind mittels eines hydraulischen Kreises, der in selektiver Weise eine Vielzahl von Verteilern versorgt, die mittels Steuerschalter betätigbar sind, welche Hydraulikzylinder steuern, die Bestandteile der Radladeranordnung sowie der Schaufelbagger- oder Löffelbaggeranordnung sind,
    dadurch gekennzeichnet, dass:
    die Gesamtheit der Verteiler, die diese Hydraulikzylinder versorgen, in Form einer einzigen Baugruppe (30) zusammengefasst und in Querrichtung in das Fahrwerk eingebaut sind und zwar zwischen der Hinterachse und dem Rahmen für die Schaufelbagger-oder Löffelbaggeranordnung;
    die Versorgung mit dem Hydraulikfluid mittels einer Pumpe (36) mit variabler Leistung erfolgt, die ein Hauptventil (37) für die Lenkung speist, das der aus den Verteilern bestehenden Baugruppe (30) zugeordnet ist;
    der Zufluss des Fluids zu jedem Verteiler mittels eines Leistungsreglers erfolgt, der die Durchflussmenge für jede Tranche steuert.
  2. Baufahrzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Verteiler, die die Zylinder für die Baggeranordnung (7) speisen, manuell oder hydraulisch ansteuerbar sind und dass die Verteiler für die Zylinder der Ladeanordnung (6) hydraulisch ansteuerbar sind.
  3. Baufahrzeug nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die Verteiler (32, 33 34) für die Ladeanordnung seitlich bezüglich denjenigen für die Baggeranordnung angeordnet sind.
EP02722353A 2001-03-29 2002-03-20 Mehrzweckbaufahrzeug des schaufellader-typs Expired - Lifetime EP1373646B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0104278 2001-03-29
FR0104278A FR2822859B1 (fr) 2001-03-29 2001-03-29 Engin de travaux publics polyvalent du type chargeuse- pelleteuse
PCT/FR2002/000974 WO2002079581A1 (fr) 2001-03-29 2002-03-20 Engin de travaux publics polyvalent du type chargeuse-pelleteuse

Publications (2)

Publication Number Publication Date
EP1373646A1 EP1373646A1 (de) 2004-01-02
EP1373646B1 true EP1373646B1 (de) 2007-09-26

Family

ID=8861712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02722353A Expired - Lifetime EP1373646B1 (de) 2001-03-29 2002-03-20 Mehrzweckbaufahrzeug des schaufellader-typs

Country Status (6)

Country Link
US (1) US20040060712A1 (de)
EP (1) EP1373646B1 (de)
AT (1) ATE374288T1 (de)
DE (1) DE60222642D1 (de)
FR (1) FR2822859B1 (de)
WO (1) WO2002079581A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005095258A1 (ja) * 2004-03-30 2005-10-13 Hitachi Construction Machinery Co., Ltd. 作業機械
US7434653B2 (en) * 2005-03-31 2008-10-14 Caterpillar Inc. On-demand electro-hydraulic steering system
US20070131466A1 (en) * 2005-12-12 2007-06-14 Gutzwiller Timothy M Work machine with electrical and hydraulic service centers
US20070246288A1 (en) * 2006-04-24 2007-10-25 Mather Daniel T Dual force hydraulic steering system for articulated work machine
CN104564919A (zh) * 2015-01-27 2015-04-29 第一拖拉机股份有限公司 一种轮式拖拉机液压系统
JP6570440B2 (ja) * 2015-12-14 2019-09-04 株式会社クボタ 作業車
US10480156B2 (en) * 2015-12-14 2019-11-19 Kubota Corporation Work vehicle
CN107059979A (zh) * 2017-04-12 2017-08-18 管中林 一种具有多种功能的步履挖掘机
CN107059978A (zh) * 2017-04-12 2017-08-18 管中林 一种具有稳定互联悬架的步履挖掘机
CN119843730B (zh) * 2025-02-18 2025-10-17 山东威猛工程机械有限公司 一种两头忙及其整体式车架

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
US2979081A (en) * 1959-08-17 1961-04-11 Deere & Co Control mechanism
US3302317A (en) * 1963-09-26 1967-02-07 Domres Franklin Grader
US3329225A (en) * 1964-12-09 1967-07-04 Thomas J Dunn Vehicle with selectively changeable work implements
FR1483942A (fr) * 1966-04-28 1967-06-09 Poclain Sa Nouvel engin pour travaux de terrassement
US3627155A (en) * 1970-04-09 1971-12-14 Deere & Co Hydraulic fluid hose handling means for a side shiftable backhoe
US3752337A (en) * 1971-08-20 1973-08-14 Reynolds Tobacco Co R Device for handling bagged or bundled soft material
US4051860A (en) * 1975-12-15 1977-10-04 Massey-Ferguson Inc. Valve control mechanism
US4479349A (en) * 1981-11-19 1984-10-30 General Signal Corporation Hydraulic control system
GB2183795B (en) * 1985-12-03 1989-10-04 Kubota Ltd Valve control structure for working vehicle
US5138756A (en) * 1989-12-08 1992-08-18 Ford New Holland, Inc. Method of converting backhoe controls
US5471908A (en) * 1994-02-16 1995-12-05 Case Corporation Hydraulic system for backhoe
US5553992A (en) * 1994-10-24 1996-09-10 New Holland North America, Inc. Controls for a skid steer loader
US6018895A (en) * 1996-03-28 2000-02-01 Clark Equipment Company Valve stack in a mini-excavator directing fluid under pressure from multiple pumps to actuable elements
AU720849B2 (en) * 1996-03-28 2000-06-15 Clark Equipment Company Multifunction valve stack
JP3070918B2 (ja) * 1998-07-15 2000-07-31 株式会社小松製作所 ブルドーザ
US6640409B2 (en) * 2001-09-25 2003-11-04 Case Corporation Method for retrofitting a swing damping valve circuit to a work vehicle
US6843004B2 (en) * 2003-01-15 2005-01-18 Robert G. Loeb Heavy equipment safety device

Also Published As

Publication number Publication date
FR2822859B1 (fr) 2003-07-18
WO2002079581A1 (fr) 2002-10-10
ATE374288T1 (de) 2007-10-15
DE60222642D1 (de) 2007-11-08
FR2822859A1 (fr) 2002-10-04
EP1373646A1 (de) 2004-01-02
US20040060712A1 (en) 2004-04-01

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