EP0041425B1 - Procédé de réalisation de tranchées drainantes - Google Patents

Procédé de réalisation de tranchées drainantes Download PDF

Info

Publication number
EP0041425B1
EP0041425B1 EP81400776A EP81400776A EP0041425B1 EP 0041425 B1 EP0041425 B1 EP 0041425B1 EP 81400776 A EP81400776 A EP 81400776A EP 81400776 A EP81400776 A EP 81400776A EP 0041425 B1 EP0041425 B1 EP 0041425B1
Authority
EP
European Patent Office
Prior art keywords
steering
chassis
output
gear box
upperstructure
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
EP81400776A
Other languages
German (de)
English (en)
Other versions
EP0041425A1 (fr
Inventor
Alain Maurice Deniau
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.)
Sondages Injections Forages SIF Enterprise Bachy
Original Assignee
Sondages Injections Forages SIF Enterprise Bachy
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 Sondages Injections Forages SIF Enterprise Bachy filed Critical Sondages Injections Forages SIF Enterprise Bachy
Publication of EP0041425A1 publication Critical patent/EP0041425A1/fr
Application granted granted Critical
Publication of EP0041425B1 publication Critical patent/EP0041425B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B11/00—Drainage of soil, e.g. for agricultural purposes

Definitions

  • This invention relates to steering of a vehicle and more particularly to a dual control steering system for a materiel handling vehicle.
  • a heavy duty material handling mechanism such as a crane or excavator
  • the truck ist capable of being driven over the road or highway under the control of an operator in the main truck cab.
  • the material handling mechanism is supported on the upperstructure which is mounted by a center pin for relative movement with respect to the truck chassis.
  • An operator's cab is provided on the upperstructure to move with the material handling mechanism. During operation at a construction site, an operator in the operator cab can control movement of the truck.
  • U.S. Patent N° 3 599 814 teaches a remote drive mechanism for powering the drive wheels from an auxiliary engine mounted on the upperstructure.
  • a steering wheel which provides the mechanical input to the steering gearbox.
  • Hydraulic power is provided to the steering gearbox from a power steering pump which is driven by the truck engine.
  • the steering wheel provides mechanical control of the hydraulic power applied to the steering gearbox.
  • the mechanical output of the steering gearbox through a relay arm, is linked to a steering arm which is connected to the front wheels.
  • Steering from the operator's cab, located on the upperstructure is accomplished through a steering lever which is mechanically linked to a steering valve.
  • the steering valve receives hydraulic power from a power steering pump located on the upperstructure power unit.
  • the hydraulic output from the steering valve is routed through a center pin to a steering cylinder located on the truck chassis.
  • the steering cylinder can be extended or retracted in response to the output of the steering valve.
  • the output of the steering cylinder is connected to the relay arm which is connected to the steering arm for positioning the front wheels.
  • Steering from the operator's cab can override steering from the truck cab.
  • the steering system from the truck cab and the steering system from the operator's cab are hydraulically and mechanically independent before the relay arm. It is an object of the invention to teach a dual location steering control system which is all hydraulic controlled and utilizes two independent hydraulic supplies which are connected in a common hydraulic system.
  • the present invention proposes a dual control system for a vehicle having a first station, mounted on a chassis, for controlling steering of the vehicle with a steering wheel, and a second station, mounted on an upperstructure which is rotatably supported from the chassis, for steering the vehicle with a steering device wherein control inputs for steering the vehicle from the first station and the second station are provided to common steering gear box, with an upperstructure hydraulic reservoir mounted on the upperstructure, characterized in that it comprises an upperstructure power steering pump having an input connected to said upper reservoir and an output for providing pressurized hydraulic fluid, a chassis hydraulic reservoir supported on said chassis, a chassis power steering pump having an input connected to said chassis reservoir and an output for providing pressurized hydraulic fluid to the common steering gear box, a hydraulic connection between said upperstructure reservoir and said chassis reservoir to provide free communication therebetween, a flow divider, disposed in the output of said upperstructure power steering pump, having a first output connection for supplying pressurized hydraulic fluid to the common steering gear box and a second pressurized hydraulic fluid output, and steering valve means connected to
  • the present invention teaches an improved dual control steering system for use on a material handling vehicle.
  • the disclosed dual steering mechanism provides an all hydraulic system with an interconnected hydraulic system a first hydraulic power supply mounted on the upperstructure and a second hydraulic power supply mounted on the chassis.
  • the disclosed dual steering system utilizes one hydraulically powered mechanically controlled steering gear box which can be simultaneously or independently powered from the two hydraulic power supplies.
  • the disclosed dual function remote steering system utilizes a first hydraulic power supply mounted on the upperstructure which provides hydraulic power and hydraulic control for steering the vehicle from the operator cab on the upperstructure, and a second hydraulic power supply supported on the truck chassis which normally provides hydraulic power for steering the vehicle from the main truck cab.
  • the reservoirs for the upperstructure hydraulic power supply and the chassis power supply are interconnected to provide for a common oil supply.
  • the output of the upper hydraulic power supply goes through a flow divider which divides the hydraulic flow into two components, one of which provides power for operating the chassis steering gear and the other of which provides hydraulic control power through which the vehicle is steered from the operator cab.
  • a steering valve is provided which is responsive to a steering device in the operator cab to provide hydraulic fluid through the center pin to a torque motor mounted on the main chassis.
  • the torque motor provides one input to a two input tee gear box, the output of which is connected to the chassis steering gear.
  • the tee gear box has another input connected to the steering wheel in the main truck cab.
  • FIG. 1 an excavating vehicle 10 having a boom 16 formed with a pair of telescoping sections.
  • Boom 16 is pivotally mounted on an upperstructure 12 which is rotatably supported by a center pin 14 from the main truck chassis 26.
  • Vehicle 10 is provided with a forward or main truck cab 30 and a rearward or upperstructure operator cab 32.
  • Truck cab 30 is occupied by an operator during over the road movement to a selected site.
  • Operator cab 32 is occupied by the operator during operation of the boom assembly which is mounted on upper support platform 12.
  • the general construction of the materiel handling vehicle 10 is similar to that disclosed in U.S. Patent Nos 3 587 886; 3 599 814; and 3 666 125 from which a more detailed description of this type vehicle may be obtained.
  • FIG. 2 there is shown a schematic of a dual steering assembly constructed according to the teaching of the present invention.
  • Center pin 14 rotatably supports upperstructure 12 from chassis 26.
  • the pressurized hydraulic output of power steering pump 20 is connected to pressure relief valve 25.
  • Pressure relief valve 25 is set to limit hydraulic pressure to 140 Kg/ cm 2 .
  • the pressure regulated hydraulic fluid is fed to flow divider 24.
  • Flow divider 24 divides the pressurized fluid from power steering pump 20 into two components.
  • the first component from flow divider 24 is fed through the center pin 14 via connection 29 and provides the hydraulic power for steering vehicle 10 when controlled from operator cab 32.
  • the other output of flow divider 24 is fed to upper steering valve 23.
  • Upper steering valve 23 has hydraulic connections 27 and 28 which extend through center pin 14 to a torque motor 40.
  • Steering valve 23, which can be the type as manufactured by Sheller Globe Co., model No. 79-218, is operable in response to the joy stick steering device 42 mounted in operator cab 32.
  • a return line 41 connects the output of steering valve 23 to the upper reservoir 22.
  • Torque motor 40 can rotate in either direction depending on the flow direction of the pressurized hydraulic fluid through the appropri ate supply line 27 or 28 in response to positioning of steering device 42 by an operator in cab 32.
  • the upperstructure steering valve 23 has associated therewith a relief valve which is set to provide relief at approximately 70 Kg/cm 2 to limit the pressure of the control fluid in lines 27 and 28.
  • Center pin 14 is a structure well known in the art which allows a rotatable upper member 12 to have several fluid communicating passages with a relatively stationary lower member.
  • the pressurized hydraulic output from the flow divider 24 is fed through line connection 29 which extends through center pin 14.
  • a hydraulically operated mechanically controlled steering gear assembly 50 is utilized for steering wheels 52 of vehicle 10.
  • Steering gear assembly 50 is mounted on chassis 26.
  • Steering gear assembly 50 has a mechanical output 53 connected through appropriate mechanical likages to wheels 52 to turn them in response to a mechanical input applied to input 51.
  • Pressurized hydraulic fluid for operating steering gear assembly 50 can be supplied from the upperstructure power supply through connection 29.
  • a tee gear box 60 as manufactured by Curtis Machine Co., Model No. 914200, is provided which has a first mechanical input 62 and a second mechanical input 64 for controlling a mechanical output 66.
  • Output 66 of the tee gear box 60 is connected to the input 51 of chassis steering assembly 50.
  • the mechanical output of torque motor 40 is connected to the input 62 of tee gear box 60 for steering vehicle 10 in response to positioning of steering device 42 located in operator cab 32.
  • the other input 64 to tee gear box 60 is connected to steering wheel 68 which is positioned in truck cab 30.
  • a chasssis power steering pump 70 is provided on chassis 26. Associated with chassis power steering pump 70 is reservoir 72 which is also supported on chassis 26. Chassis reservoir 72, power steering pump 70 and the associated truck drive (not shown) form the chassis hydraulic supply. Upper reservoir 22 and chassis reservoir 72 are connected in fluid communication by connection 74 which extends through center pin 14 to provide for a common hydraulic system. The pressurized hydraulic output of chassis steering pump 70 is connected through a suitable connection 76 to chassis steering assembly 50.
  • Check valves 78 and 80 are provided in the connections of the chassis hydraulic power supply and the upperstructure hydraulic power supply, respectively, to steering gear assembly 50.
  • Check valves 78 and 80 restrict the flow direction of the pressurized hydraulic fluid from upperstructure power steering pump 20 and chassis power steering pump 70 to the desired path through chassis steering gear 50.
  • the output of chassis steering gear assembly 50 is conducted through a suitable connection 82 to the chassis reservoir 72.
  • the disclosed dual steering control provides for an all hydraulic system utilizing one steering gear box assembly 50 which can simultaneously or individually be powered from two independent sources of hydraulic power 20 and 70. Since reservoirs 22 and 72 are interconnected, an independent check on the oil level of the chassis power supply is not required. Both the truck engine, which drives chassis power steering pump 70, and an upperstructure engine, which drives upperstructure power steering pump 20, can be running simultaneously without damage to the steering systems. The chassis power steering pump 70 will not easily run out of oil, even if a leak occurs in the chassis hydraulic system, since it can draw from the upper reservoir 22. If the chassis power steering pump 70 should fail, the pressurized hydraulic fluid for operating chassis steering assembly 50 can be obtained by running the upperstructure engine for the upperstructure power steering pump 20. The remote drive from operator cab 32 is through the chassis steering assembly 50 and does not override it.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Power Steering Mechanism (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Claims (4)

1. Un système de double commande pour un véhicule ayant un premier poste (30) monté sur un châssis (26) pour commander la direction du véhicule au moyen d'un volant de direction (68), et un second poste (32) monté sur une superstructure (12) qui est portée à rotation par le châssis (26), pour diriger le véhicule au moyen d'un dispositif de direction (42), système dans lequel les commandes d'entrée pour diriger le véhicule à partir du premier poste (30) et du second poste (32) sont appliquées à un mécanisme de direction commun (50), un réservoir hydraulique (22) de superstructure étant monté sur la superstructure, caractérisé en ce qu'il comprend une pompe (20) de direction assistée de superstructure ayant un orifice d'entrée raccordé audit réservoir (22) de superstructure et un orifice de sortie pour fournir du fluide hydraulique sous pression, un réservoir hydraulique (72) de châssis porté par ledit châssis (26), une pompe (70) de direction assistée de châssis ayant un orifice d'entrée raccordé audit réservoir (72) de châssis et un orifice de sortie pour fournir du fluide hydraulique sous pression au mécanisme de direction commun (50), une liaison hydraulique (74) entre ledit réservoir (22) de superstructure et ledit réservoir (72) de châssis pour assurer une libre communication entre eux, un répartiteur d'écoulement (24) disposé dans l'orifice de sortie de ladite pompe (20) de direction assistée de superstructure ayant une première conduite de sortie pour fournir du fluide hydraulique sous pression au mécanisme de direction commun (50) et une seconde conduite de sortie de fluide hydraulique sous pression, et des moyens (23) formant valve de direction raccordés à ladite seconde conduite de sortie dudit répartiteur d'écoulement (24) pour assurer la commande de direction du mécanisme de direction commun (50) à partir du second poste (32).
2. Un système de double commande selon la revendication 1, caractérisé en ce qu'il comprend une boîte d'engrenage en T (60) ayant deux organes d'entrée mécaniques (62, 64) et un organe de sortie mécanique (66) accouplé audit mécanisme de direction commun (50), le volant de direction (68) situé dans le premier poste (30) étant accouplé à un premier organe d'entrée (64) de ladite boîte d'engrenage en T (60) un moteur- couple (40) fonctionnant en réponse à un signal de sortie hydraulique desdits moyens formant valve de direction étant accouplé à l'autre organe d'entrée (62) de ladite boîte d'engrenage en T.
3. Un système de double commande selon la revendication 1, caractérisé en ce qu'il comporte un premier clapet anti-retour (80) disposé entre ledit répartiteur d'écoulement et ledit mécanisme de direction (50) de châssis pour envoyer un courant hydraulique provenant dudit répartiteur d'écoulement audit mécanisme de direction et un second clapet anti-retour (78) disposé entre ladite pompe (70) de direction assistée de châssis et ledit mécanisme de direction (50) de châssis pour envoyer un courant hydraulique provenant de ladite pompe (70) de direction assistée de châssis au mécanisme de direction (50) de châssis.
4. Un système de double commande selon la revendication 3, caractérisé en ce qu'il comprend un détendeur de pression (25) disposé dans l'orifice de sortie de ladite pompre de direction assistée de superstructure et un second détendeur de pression, réglé à une plus faible valeur que ledit premier détendeur de pression, disposé dans le second conduite de sortie dudit répartiteur d'écoulement (24).
EP81400776A 1980-06-03 1981-05-18 Procédé de réalisation de tranchées drainantes Expired EP0041425B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8012296A FR2483485A1 (fr) 1980-06-03 1980-06-03 Procede de realisation de tranchees drainantes et tranchees drainantes realisees par ce procede
FR8012296 1980-06-03

Publications (2)

Publication Number Publication Date
EP0041425A1 EP0041425A1 (fr) 1981-12-09
EP0041425B1 true EP0041425B1 (fr) 1984-02-15

Family

ID=9242649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400776A Expired EP0041425B1 (fr) 1980-06-03 1981-05-18 Procédé de réalisation de tranchées drainantes

Country Status (9)

Country Link
EP (1) EP0041425B1 (fr)
JP (1) JPS5751339A (fr)
AR (1) AR223777A1 (fr)
DE (1) DE3162251D1 (fr)
FR (1) FR2483485A1 (fr)
HK (1) HK29785A (fr)
OA (1) OA06819A (fr)
PT (1) PT73125B (fr)
SG (1) SG87884G (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0138259A3 (fr) * 1983-09-29 1986-04-16 Fluvio Labor, Personenvennootschap met beperkte aansprakelijkheid Massif filtrant et procédé de réalisation d'un talus de digue renforcé

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603099A (en) * 1968-01-22 1971-09-07 Przed Specjalistyczne Gornictw Process of making intraground waterproof baffles and a device therefor
GB1419628A (en) * 1972-04-20 1975-12-31 Cambridge Soil Services Ltd Method and apparatus for constructing ground drainage insta llations
FR2244356A5 (en) * 1973-09-13 1975-04-11 Masquelier Henri Drainage system for sports fields - includes expanded material in channels and mixed with loam

Also Published As

Publication number Publication date
OA06819A (fr) 1982-12-31
PT73125A (fr) 1981-07-01
HK29785A (en) 1985-04-19
JPS5751339A (en) 1982-03-26
FR2483485B1 (fr) 1983-10-14
EP0041425A1 (fr) 1981-12-09
SG87884G (en) 1986-11-21
AR223777A1 (es) 1981-09-15
FR2483485A1 (fr) 1981-12-04
DE3162251D1 (en) 1984-03-22
JPS636685B2 (fr) 1988-02-10
PT73125B (fr) 1982-07-01

Similar Documents

Publication Publication Date Title
EP0041421A1 (fr) Système de direction à double commande
EP2652212B1 (fr) Circuit d'attaque en boucle fermée avec assistance de pompe en circuit ouvert pour déplacement à grande vitesse
US4773814A (en) Earth moving machine
EP2673422B1 (fr) Système hydrostatique configuré pour être intégré dans une excavatrice
CA1040511A (fr) Double commande hydraulique pour pompe et soupape a deux directions
US2745506A (en) Lever control mechanism for combined operation of vehicle tramming and steering valves
JP2702981B2 (ja) 制動システム並びにパイロット制御システム
US4023364A (en) Swing flow supplemental travel for an excavator
EP1621684B1 (fr) Tracteur.
US20070209356A1 (en) Method for providing priority to steering wheel on machines with steering wheel and joystick
US7845458B2 (en) Control system for frame-steering of a vehicle and method for controlling two steering cylinders in a frame-steered vehicle
US3439768A (en) Hydraulic dual source steering system for vehicles
US4516655A (en) Remote drive with powershift transmission
JPS5815341B2 (ja) 車輌用ステアリングアッセンブリ
US3896617A (en) Steering system with electrically driven secondary steering means
EP0041425B1 (fr) Procédé de réalisation de tranchées drainantes
JPH108506A (ja) パワー機械
US4209071A (en) Control mechanism for skid steer vehicle
US4015679A (en) Drive range and lock control system
US4126082A (en) Travel-brake control system
US4417633A (en) Hydraulic system for preventing leak down of hydraulic implements
US6357231B1 (en) Hydraulic pump circuit for mini excavators
US3586185A (en) Articulate wheel loader hydraulic system
US3720332A (en) Hydraulic systems
JPH05125746A (ja) 作業機の油圧パイロツト回路

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

AK Designated contracting states

Designated state(s): BE CH DE FR GB NL

17P Request for examination filed

Effective date: 19820517

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE FR GB LI NL

REF Corresponds to:

Ref document number: 3162251

Country of ref document: DE

Date of ref document: 19840322

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: SONDAGES INJECTIONS FORAGES S.I.F. ENTREPRISE BA

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

BECN Be: change of holder's name

Effective date: 19840215

26N No opposition filed
NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: SONDAGES INJECTIONS FORAGES 'S.I.F.' ENTREPRISE BA

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

Ref country code: FR

Payment date: 19910314

Year of fee payment: 11

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

Ref country code: GB

Payment date: 19910513

Year of fee payment: 11

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

Ref country code: CH

Payment date: 19910522

Year of fee payment: 11

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

Ref country code: NL

Payment date: 19910531

Year of fee payment: 11

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

Ref country code: DE

Payment date: 19910604

Year of fee payment: 11

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

Ref country code: BE

Payment date: 19910613

Year of fee payment: 11

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

Ref country code: GB

Effective date: 19920518

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

Ref country code: LI

Effective date: 19920531

Ref country code: CH

Effective date: 19920531

Ref country code: BE

Effective date: 19920531

BERE Be: lapsed

Owner name: SONDAGES INJECTIONS FORAGES - SIF - ENTREPRISE BA

Effective date: 19920531

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

Ref country code: NL

Effective date: 19921201

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

Effective date: 19920518

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930129

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19930202

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST