US3603614A - Means for stabilizing a civil engineering machine - Google Patents

Means for stabilizing a civil engineering machine Download PDF

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Publication number
US3603614A
US3603614A US834819A US3603614DA US3603614A US 3603614 A US3603614 A US 3603614A US 834819 A US834819 A US 834819A US 3603614D A US3603614D A US 3603614DA US 3603614 A US3603614 A US 3603614A
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United States
Prior art keywords
props
chassis
pair
civil engineering
engineering machine
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
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US834819A
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English (en)
Inventor
Yves M Gauchet
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Poclain SA
Original Assignee
Poclain SA
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Filing date
Publication date
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Publication of US3603614A publication Critical patent/US3603614A/en
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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
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/085—Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D49/00—Tractors
    • B62D49/08—Tractors having means for preventing overturning or tipping

Definitions

  • the most improved versions of such means secure the machine either by lowering four elements or props in relation to the chassis, such props having only one operative position and securing then has to be completed by additional elements outside the machine; alternatively four props are lowered which have baseplates which are movable in relation to the props, location being carried out by means of a screw jack, spindles or any other mechanical, hydraulic or electrical system; alternatively the lowering of the four props is controlled independently, the baseplates being stationary with respect to the props.
  • These means are generally impractical because they take a long time to use or they are relatively expensive.
  • an arm is pivotally connected to the chassis while a hydraulic jack is secured between said arm and the chassis and two other jacks are each secured between a prop and the arm.
  • two arms are pivotally connected to the chassis while two hydraulic jacks are each secured between one arm and the chassis and two other jacks are each secured between one prop and one arm.
  • the invention also relates to a civil engineering machine whose chassis has a fixed axle and a rocking and/or very short axle, the chassis being provided with a pair of conventional props disposed near the fixed axle.
  • a stabilizing system according to one of the previous embodiments is also disposed on the chassis.
  • the stabilizing system is preferably disposed near the rocking axle.
  • FIG. 2 is a diagrammatic section of a first embodiment of a system according to the invention.
  • FlG. 3 is a diagrammatic section of a second embodiment of a system according to the invention.
  • FIG. 4 is a diagrammatic section of a third embodiment of a system according to the invention.
  • an element 24 in the form of an arm is pivotally connected to the chassis l at 51.
  • a jack 19 is pivotally connected to 6a at 47 and to 24 at 48 while a jack 20 is pivotally connected to 7a at 52 and to M at 53.
  • a jack 21 is pivotally connected to 24- at 50 and at 49 it is pivotally connected to an element 46 rigidly secured to the chassis l.
  • the jacks l9 and 20 are connected in parallel and the jack rods are pivotally connected at 47 and 52 so that the inlet chambers of the two jacks are remote from the rods and are fed with pressure fluid in parallel relationship.
  • Hydraulic fluid is provided to the cylinders 19 and 20 by means of a conventional hydraulic delivery system such as that shown in jacks.
  • Pat. No. 3,452,530 which includes a suction conduit 70 connected to a pump 71 for removing fluid from a tank 72 for delivery by a delivery conduit 73 to a three-way control valve 74.
  • Control valve 74 is operable for providing pressurized fluid to either of two conduits 76 or 77 which respectively branch into branch conduits 76a and 76b are connected to the innermost chambers 19a and 20a of jacks l9 and 20 respectively so that pressurized fluid injected into these chambers serves to extend both of the jacks.
  • 77a and 77b are connected to chambers Nb and 20b so that pressurized fluid injected into these chambers serves to retract the jacks in an obvious manner.
  • valve 74 connects the chambers 19b and 20b to exhaust through a pressure relief valve 78 and an exhaust line 75 back to the tank 72 when the other chambers of each of the jack members are receiving pressurized fluid.
  • chambers 19a and 20a are connected to exhaust when pressurized fluid is being injected into chambers 1% and 20b.
  • Jack 21 is provided with two chambers 65 and 66 which are connected by a conventional control valve 79 to a conduit 80 extending to the exhaust line 757
  • Valve 79 is positionable to block members 65 and 66 when positioned as shown in FIG. 3 but is also movable to a second position to enable the filling of chambers via conduit 80 through valve 74 in an obvious manner.
  • valve 78 is capable of releasing pressurized fluid a pressure above a low value for return via exhaust line 75. Consequently, fluid from chambers 65 and 66 is easily exhausted through conduits 81 or 82 upon actuation of either ofthejacks 119 or 26!.
  • the third embodiment relates to the machine already described but the two arm elements 22 and 23 are pivotally connected to the chassis l at 34 and 35.
  • a jack 15 is pivotally connected to 6a at 36 and to 23 at 37, while a jack 16 is pivotally connected to 711 at E8 and to 22 at 39.
  • jacks are pivotally connected, 18 at 41, to an element 40 rigidly secured to the chassis 1, and at 42 to 23, and 17 at 44 to an element 43 rigidly secured to the chassis 1, and at 45 to 22.
  • the jacks 15 and 16 are connected in parallel.
  • the inlet chambers of the two jacks remote from the rods are connected in parallel and fed with pressure fluid.
  • the jacks l7 and 18 are also connected in parallel.
  • the chambers 56 and 57 of the two jacks remote from the rods are connected by a conduit 59.
  • the chambers 54 and 55 are connected via a conduit 58.
  • a system for feeding the jacks 17 and 18 is provided but has not been shown.
  • All the jacks used are of the double-action type.
  • the machine arrives at the site where its working equipment is to operate, generally a building site.
  • the machine must be secured on its stabilizers to give a satisfactory support if large forces are to be applied.
  • the props 8 and 9 are lowered and since they are situated near the fixed angle 10 the wheels of which have relatively little movement, they can be controlled by the conventional system and bear against stops on the chassis 1.
  • the jack 13 moves the arms 6a and 7a of the props apart so that the props approach and come into contact with the ground to which they are applied with maximum force, the forces on the two props having very substantially the same value.
  • the cock 64 remains open, the fluid of the locking jaw 14 being completely free to flow between the two chambers 61 and 62.
  • the cock 64 is closed so that the prop 7 and the prop 6 are rigidly secured to the chassis l and the chassis is completely immobilized with respect to the ground.
  • the props 8 and 9 are actuated and then the props 6 and 7.
  • the latter two are located by feeding the jacks 19 and 20 in parallel by the positioning of valve 74 to feed pressurized fluid to lines 76a and 761) so that the props are moved apart and their baseplates 2 and 3 come into contact with the ground against which they are firmly engaged.
  • Valve 79 remained in its leftmost position during the prop-lowering operation in order that the element 24 can be permitted to shift somewhat to consequently force fluid from or to either of chambers 65 or 66.
  • the valve 79 is shifted to its blocking position illustrated in FIG. 3 so as to prevent any further movement ofjack 21 and consequently to lock the linkage consisting of jacks 19, 20 and element 24 in a fixed position with respect to the chassis. Consequently, the chassis is immobilized with respect to the ground.
  • the props 6 and 7 are actuated.
  • the jacks 15 and 16 are fed in parallel in a similar way to the jacks 19 and of the second embodiment.
  • the cock 60 which was open at the start of the operation and until the baseplates 2 and 3 of the props 6 and 7 have come into contact with the ground, is then closed to lock the jacks 17 and 18 in the position they occupy so that the chassis 1 is thus locked with respect to the ground.
  • the chassis l of the machine is supported, for example, by a fixed axle 10 and an axle l1 pivotally connected to a longitudinal spindle 12 and/or which carries closely situated wheels.
  • the pair of props 7 and 6 may be one of the types according to the three above-described embodiments.
  • the props 8 and 9 adjacent the axle 11 will also be controlled by one of the above described three systems modified as follows.
  • the two chambers 61 and 62 of the jack 14 are no longer interconnected and the jack 14 is now connected to a pressure fluid supply circuit.
  • the jack 21 is connected to a pressure fluid supply circuit.
  • the third embodiment is modified, the jacks l7 and 18 being adapted to be supplied crosswise.
  • the chambers 55 and 56 are connected in parallel while the chambers 54 and 57 are connected to a pressure fluid circuit.
  • the chassis can be restored to a horizontal position even on undulating ground.
  • the machine arrives on the site. Since the ground is usually uneven, the chassis may not have a very satisfactory horizontal support and this is an essential condition for immediate operation of this machine, particularly as regards equilibrium. To stabilize the machine it is secured on its props and this system is used to correct its attitude.
  • the props 6 and 7 are actuated and applied to the ground without being locked in position.
  • the props 8 and 9 are then actuated and the jacks are left free, namely 14, or 21, or 17 and 18, depending upon the embodiment selected.
  • the baseplates 4 and 5 are applied to the ground, pressure fluid is supplied to the jacks 14, or 21, or 17 and 18 so as to straighten the chassis on its props until the correct attitude has been reached.
  • the supply to the jacks is then stopped and the props 6 and 7 are locked.
  • actuating linkage means connecting said pair of props and extending between points on said props spaced from said pivotal connections between each prop and said chassis and including jack means comprising a portion of the connection between said props operable upon actuation for simultaneously pivoting said props and means for locking said actuating linkage means for preventing movement of said actuating linkage means with respect to said chassis to hold said props in fixed positions with respect to said chassis.
  • said actuating linkage means include a first hydraulic jack secured between said pair of props, an element rigidly connected to the chassis, and a second jack secured between said element and one of the props of said pair.
  • a civil engineering machine including a fixed axle, an axle mounted for rocking movement relative to the chassis in a plane extending laterally of the chassis, and a pair of conventional props disposed near the fixed axle.
  • a civil engineering machine having a chassis and stabilizing means comprising at least one pair of props and pivotal connections between each prop of said pair of props and the chassis, the improvement comprising means connecting said pair of props and means for locking at least one of said pivotal connections wherein said means connecting said pair of props includes an arm pivotally connected to the chassis, a first pair of jacks respectively secured between said pair of props and said arm, and a hydraulic jack secured between said arm and the chassis.
  • a civil engineering machine including a fixed axle, an axle mounted for rocking movement relative to the chassis in a plane extending laterally of the chassis, and a pair of conventional props disposed near the fixed axle.
  • a civil engineering machine wherein said one pair of props is disposed near said axle mounted for rocking movement.
  • said actuating linkage means includes two arms pivotally connected to the chassis, a first pair of jacks secured respectively between one prop of said pair of props and one of said arms and between the other prop of said pair of props and the other of said arms and a pair of hydraulic jacks secured respectively between said two arms and the chassis.
  • a civil engineering machine including a fixed axle, an axle mounted for rocking movement relative to the chassis in a plane extending laterally of the chassis, and a pair of conventional props disposed near the fixed axle,
  • a civil engineering machine wherein said one pair of props is disposed near said axle mounted for rocking movement.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Body Structure For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)
  • Operation Control Of Excavators (AREA)
US834819A 1968-06-21 1969-06-19 Means for stabilizing a civil engineering machine Expired - Lifetime US3603614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR155960 1968-06-21

Publications (1)

Publication Number Publication Date
US3603614A true US3603614A (en) 1971-09-07

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US834819A Expired - Lifetime US3603614A (en) 1968-06-21 1969-06-19 Means for stabilizing a civil engineering machine

Country Status (6)

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US (1) US3603614A (de)
BE (1) BE770530Q (de)
DE (1) DE1930939C3 (de)
ES (1) ES368666A1 (de)
FR (1) FR1583919A (de)
GB (1) GB1267067A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3734531A (en) * 1970-10-12 1973-05-22 Richier Sa Stabilizing device for appliances for public works, for handling and for maintenance
US3777898A (en) * 1970-10-05 1973-12-11 M Gallay Traction and steering device
US3918741A (en) * 1974-04-12 1975-11-11 Cascade Corp Dual mode stabilizer assembly
US4116467A (en) * 1976-02-16 1978-09-26 Canadian Foremost Ltd. Outrigger
US4124226A (en) * 1977-10-06 1978-11-07 Harnischfeger Corporation Electrohydraulic outrigger control system
US20030094316A1 (en) * 2001-11-20 2003-05-22 Schneider Robert H. Pseudo four-leg vehicle leveling system with independent leg lock-out

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8308088D0 (en) * 1983-03-24 1983-05-05 Coles Cranes Ltd Mobile cranes
US4757622A (en) * 1986-12-30 1988-07-19 Morris Charles W Portable power shovel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750204A (en) * 1954-03-05 1956-06-12 William R Ohrmann Side brace for hydraulic stackers
US2992016A (en) * 1959-02-20 1961-07-11 John S Pilch Outrigger or stabilizer for tractors
US3175698A (en) * 1963-04-26 1965-03-30 Koehring Co Hydraulic stabilizer
US3397898A (en) * 1967-02-06 1968-08-20 Caterpillar Tractor Co Stabilizer for motor vehicle
US3442530A (en) * 1966-03-22 1969-05-06 Gabriel L Guinot Method of operating extendable and retractable stabilising stays or props of public works vehicles and an hydraulic system for carrying out said method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750204A (en) * 1954-03-05 1956-06-12 William R Ohrmann Side brace for hydraulic stackers
US2992016A (en) * 1959-02-20 1961-07-11 John S Pilch Outrigger or stabilizer for tractors
US3175698A (en) * 1963-04-26 1965-03-30 Koehring Co Hydraulic stabilizer
US3442530A (en) * 1966-03-22 1969-05-06 Gabriel L Guinot Method of operating extendable and retractable stabilising stays or props of public works vehicles and an hydraulic system for carrying out said method
US3397898A (en) * 1967-02-06 1968-08-20 Caterpillar Tractor Co Stabilizer for motor vehicle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777898A (en) * 1970-10-05 1973-12-11 M Gallay Traction and steering device
US3734531A (en) * 1970-10-12 1973-05-22 Richier Sa Stabilizing device for appliances for public works, for handling and for maintenance
US3918741A (en) * 1974-04-12 1975-11-11 Cascade Corp Dual mode stabilizer assembly
US4116467A (en) * 1976-02-16 1978-09-26 Canadian Foremost Ltd. Outrigger
US4124226A (en) * 1977-10-06 1978-11-07 Harnischfeger Corporation Electrohydraulic outrigger control system
US20030094316A1 (en) * 2001-11-20 2003-05-22 Schneider Robert H. Pseudo four-leg vehicle leveling system with independent leg lock-out
US6848693B2 (en) * 2001-11-20 2005-02-01 Actuant Corporation Pseudo four-leg vehicle leveling system with independent leg lock-out

Also Published As

Publication number Publication date
DE1930939A1 (de) 1970-01-02
GB1267067A (de) 1972-03-15
FR1583919A (de) 1969-12-05
DE1930939C3 (de) 1979-07-05
ES368666A1 (es) 1971-05-01
DE1930939B2 (de) 1978-11-09
BE770530Q (fr) 1971-12-01

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