FR2474415A1 - Mobile platform with twin retractable stabilising legs - has leg jack hydraulics connected to compensate for unequal ground height - Google Patents

Mobile platform with twin retractable stabilising legs - has leg jack hydraulics connected to compensate for unequal ground height Download PDF

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Publication number
FR2474415A1
FR2474415A1 FR8001655A FR8001655A FR2474415A1 FR 2474415 A1 FR2474415 A1 FR 2474415A1 FR 8001655 A FR8001655 A FR 8001655A FR 8001655 A FR8001655 A FR 8001655A FR 2474415 A1 FR2474415 A1 FR 2474415A1
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FR
France
Prior art keywords
platform
ground
retractable
twin
jacks
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.)
Granted
Application number
FR8001655A
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French (fr)
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FR2474415B1 (en
Inventor
Bernard Lucien Lambert
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.)
PPM SA
Potain Poclain Materiel PPM SA
Original Assignee
PPM SA
Potain Poclain Materiel PPM SA
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 PPM SA, Potain Poclain Materiel PPM SA filed Critical PPM SA
Priority to FR8001655A priority Critical patent/FR2474415A1/en
Publication of FR2474415A1 publication Critical patent/FR2474415A1/en
Application granted granted Critical
Publication of FR2474415B1 publication Critical patent/FR2474415B1/fr
Granted legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/78Supports, e.g. outriggers, for mobile cranes
    • B66C23/80Supports, e.g. outriggers, for mobile cranes hydraulically actuated
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08Superstructures; Supports for superstructures
    • E02F9/085Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs

Abstract

The twin stabilising legs (6,7) are connected to a common beam (9) connected to jacks (14,15) about an axis (18,22) and to the main rear platform frame about a second axis (11,12) The jacks can rotate the legs down while maintaining the beam (9) horizontal. When one of the legs touches the ground, a resistance is set up increasing the hydraulic pressure in the same side jack. As both jack hydraulics are connected, the other jack is forced to extend until the pressure is even and both legs bear equally on the ground.

Description

Dans le domaine des engins mobiles de travaux publics, tels que les grues mobiles et les pelles hydrauliques, on sait qu'il est généralement nécessaire de faire reposer l'engin sur le sol au moyen de dispositifs rigides de stabilisation, pendant le travail dudit engin. In the field of mobile public works vehicles, such as mobile cranes and hydraulic shovels, it is known that it is generally necessary to rest the vehicle on the ground by means of rigid stabilization devices, during the work of said vehicle. .

Souvent, les stabilisateurs sont montes par paire, et, selon une technique classique, sont montes pivotants par rapport au bâti de l'engin. L'efficacité d'une telle disposition dépend de la configuration du sol et il arrive qu'un des deux stabilisateurs de la paire considérée soit disposé en regard d'une dépression du sol et ne réalise donc aucun appui de l'engin sur le sol, alors qt)e, bien entendu, l'autre stabilisateur reprend la totalite des efforts d'appui. Un fonctionnement analogue est obtenu lorsque la charge que l'engin est susceptible de porter (telle qu'une masse suspendue à la flèche d'une grue ou que le godet empli de terre d'une pelle hydraulique) appuie de maniere dissymetrique sur les deux stabilisateurs, l'un de ceux-ci devant reprendre la plus grande partie ou la totalité des efforts d'appui. Pour que cecte reprise des efforts d'appui soit possible, il faut que le vérin de commande de cet autre stabilisateur, et par conséquent, de chacun des stabilisateurs, ait une dimension permettant effectivement cette reprise d'efforts importants. Often, the stabilizers are mounted in pairs, and, according to a conventional technique, are pivotally mounted relative to the frame of the machine. The effectiveness of such an arrangement depends on the configuration of the ground and it happens that one of the two stabilizers of the pair considered is placed opposite a depression in the ground and therefore does not support the machine on the ground. , then qt) e, of course, the other stabilizer takes up all of the support forces. A similar operation is obtained when the load that the machine is likely to carry (such as a mass suspended from the boom of a crane or that the bucket filled with earth from a hydraulic shovel) presses asymmetrically on both stabilizers, one of which should take up most or all of the support efforts. For this recovery of support forces to be possible, it is necessary that the control jack of this other stabilizer, and therefore of each of the stabilizers, has a dimension effectively allowing this recovery of significant forces.

Il résulte de cet etat de chose, une difficulté de rea- lisation des dispositifs de stabilisation connus, 8 laquelle l'invention entend remédier en assurant en permanence la reprise des efforts d'appui au moyen de tous les vérins de commande des stabilisateurs. It follows from this state of affairs, a difficulty in realizing known stabilization devices, 8 which the invention intends to remedy by permanently ensuring the resumption of the support forces by means of all the actuators for controlling the stabilizers.

L'invention a donc pour objet un dispositif de bras escamotables de stabilisation d'une plateforme mobile constitué par au moins deux bras d'appui sur le sol qui sont
- attelés à la plateforme au moyen d'axes horizontaux,
- distincts et espaces l'un de l'autre, et,
- attelés à des vérins de régalage de leur position relative par rapport à la plateforme.
The subject of the invention is therefore a device for retractable arms for stabilizing a mobile platform constituted by at least two support arms on the ground which are
- coupled to the platform by means of horizontal axes,
- distinct and spaces from each other, and,
- coupled to jacks for leveling their relative position relative to the platform.

Lesdits axes horizontaux sont disposés dans le prolongement l'un de l'autre, cependant que les deux bras d'appui sont fixés sur une poutre résistante qui est attelée à la plateforme au moyen desdits axes horizontaux. Said horizontal axes are arranged in the extension of one another, while the two support arms are fixed on a resistant beam which is coupled to the platform by means of said horizontal axes.

Les avantageuses dispositions suivantes sont, en outre, souvent adoptées
- au moins deux vérins distincts sont attelés entre la poutre résistante et la plateforme et sont alimentés en parallele ;
- ces deux vérins sont espacés l'un de l'autre
- chacun des vérins est articulé autour d'axes paralle- les aux dits axes horizontaux d'une part, à la plateforme, d'autre part, à la poutre résistante
- la poutre résistante est montée,pivotante par rapport à la plateforme autour desdits axes horizontaux.
In addition, the following advantageous arrangements are often adopted
- at least two separate cylinders are coupled between the resistant beam and the platform and are fed in parallel;
- these two cylinders are spaced from each other
- each of the cylinders is articulated around parallel axes with the said horizontal axes on the one hand, with the platform, on the other hand, with the resistant beam
- The resistant beam is mounted, pivoting relative to the platform around said horizontal axes.

L'invention sera mieux comprise, et des caractéristiques secondaires et leurs avantages apparattront au cours de la description d'une réalisation donnée ci-dessous à titre d'exemple. The invention will be better understood, and secondary characteristics and their advantages will become apparent during the description of an embodiment given below by way of example.

Il est entendu que la description et les dessins ne sont donnés qu'à titre indicatif et non limitatif. It is understood that the description and the drawings are given for information only and are not limiting.

I1 sera fait référence aux dessins annexés, dans les quels
- la figure 1 est une vue en élévation d'un engin muni d'un dispositif de stabilisation conforme à l'invention
- la figure 2 est une vue en élévation suivant 1seche F de la figure 3 du dispositif de stabilisation dont est muni l'en- gin de la figure 1
- la figure 3 est une coupe suivant III-III de la figure 2 ;
- la figure 4 est une coupe suivant-IV-IV de la figure 2 ; et,
- la figure S est le schéma du circuit de commande des vérins que comporte le dispositif de stabilisation représenté sur les figures 2 à 4.
Reference will be made to the accompanying drawings, in which
- Figure 1 is an elevational view of a machine provided with a stabilization device according to the invention
- Figure 2 is an elevational view along 1seche F of Figure 3 of the stabilization device which is provided with the machine of Figure 1
- Figure 3 is a section along III-III of Figure 2;
- Figure 4 is a section along IV-IV of Figure 2; and,
- Figure S is the diagram of the actuator control circuit that includes the stabilization device shown in Figures 2 to 4.

L'engin de la figure 1 est une grue mobile montée sur un châssis 1 de camion et comportant une fleche 2 de manutention montée rotative autour d'un axe vertical 3 sur ce châssis 1. L'engin est muni de roues 4, au moyen desquelles il repose sur le sol 5 et de bras de stabilisation 6 et 7 disposés à l'carrière du châssis 1. The machine of FIG. 1 is a mobile crane mounted on a chassis 1 of a truck and comprising a handling arrow 2 rotatably mounted around a vertical axis 3 on this chassis 1. The machine is provided with wheels 4, by means of which it rests on the ground 5 and of stabilization arms 6 and 7 arranged at the quarry of the chassis 1.

En regard des figures 2 à 4, on note que les bras 6 et 7, identiques, sont fixés par soudure (8) sur une meme poutre résistante 9, horizontale et transversale, munie de deux paires d'oreilles 10 qui y sont soudées (13) et qui en réalisent le montage pivotant sur le châssis 1 autour d'axes horizontaux transversaux 11, 12, respectivement. Des vérins hydrauliques-14, 15, identiques, sont attelés entre le châssis 1 et les oreilles 10 de chaque paire, au moyen d'axes horizontaux transversaux
- la tige de piston 16 et le cylindre 17 du vérin 14, sont articulés sur le châssis 1 et les oreilles 10 au moyen des axes 18 et 19, respectivement,
- la tige de piston 20 et le cylindre 21 du vérin 15 sont articulés sur le châssis 1 et les oreilles 10 au moyen des axes -22 et 23, respectivement.
With reference to FIGS. 2 to 4, it is noted that the arms 6 and 7, which are identical, are fixed by welding (8) on the same resistant beam 9, horizontal and transverse, provided with two pairs of ears 10 which are welded thereto ( 13) and which carry out the pivoting mounting thereof on the chassis 1 around transverse horizontal axes 11, 12, respectively. Identical hydraulic cylinders-14, 15 are coupled between the chassis 1 and the lugs 10 of each pair, by means of transverse horizontal axes
the piston rod 16 and the cylinder 17 of the jack 14 are articulated on the chassis 1 and the lugs 10 by means of the axes 18 and 19, respectively,
- The piston rod 20 and the cylinder 21 of the jack 15 are articulated on the chassis 1 and the lugs 10 by means of the axes -22 and 23, respectively.

On note que
- le piston 24, 25, solidaire de la tige de piston 16, 20, délimite à l'intérieur du cylindre 17, 21 une chambre inférieure 26, 27, à l'intérieur de laquelle évolue la tige de piston, et, une chambre supérieure 28, 29 de grande section utile, respectivement
- les extrémités libres des bras 6 et 7, sont conformées en semelles d'appui 30 et 31, respectivement, la semelle 31 étant effectivement en appui ferme sur le sol 5 et la semelle 30, disposée, dans l'exemple representé, en regard d'une dépression 32 du sol 5, étant hors d'appui de celui-ci, ou étant, plus généralement, dans une position relative par rapport au sol dans laquelle elle ne transmet pas d'effort d'appui de l'engin sur le sol
- l'engin est en appui sur le sol par l'intermédiaire de la semelle 31, de sorte que les roues 4 sont elles aussi, hors d'appui du sol
- les bras 6 et 7 sont espacés l-'un de l'autre (distance L d 'entr' axe) et en fait disposés chacun à une extrémité de la poutre 9 ;
- les verins 14 et 15 sont également espacés (distance
M d'entt'axe), les oreilles 10 étant placées à cte des bras 6 et 7
- les axes ll et 12 sont disposés sur une même ligne
N, dans le prolongement l'un de l'autre.
We take note that
- The piston 24, 25, integral with the piston rod 16, 20, delimits inside the cylinder 17, 21 a lower chamber 26, 27, inside which the piston rod moves, and, a chamber upper 28, 29 of large useful cross-section, respectively
- The free ends of the arms 6 and 7, are shaped as support soles 30 and 31, respectively, the sole 31 actually being in firm support on the ground 5 and the sole 30, arranged, in the example shown, opposite of a depression 32 of the ground 5, being out of support of the latter, or being, more generally, in a relative position relative to the ground in which it does not transmit a force of support of the machine on floor
- The machine is supported on the ground by means of the sole 31, so that the wheels 4 are also, out of support from the ground
- The arms 6 and 7 are spaced from one another (distance L from between the axis) and in fact each disposed at one end of the beam 9;
- cylinders 14 and 15 are also spaced (distance
M of center), the ears 10 being placed next to the arms 6 and 7
- axes ll and 12 are arranged on the same line
N, in line with each other.

Enfin, on note que les chambres inférieures 26 et 27 des vérins sont reliées entre elles par un conduit 33, de même que les chambres supérieures 28, 29 sont reliées entre elles par un conduit 34. Les conduits 33 et 34 sont reliés à un distributeur 35 à trois positions-par des conduits 36 et 37, respectivement. De plus, une pompe 38 est reliée à un réservoir de fluide 39 par son conduit d'aspiration 40, et, au distributeur 35 par son conduit de refoulement 41. Un-conduit 42 relie le distributeur 35 au réservoir 39. Finally, it is noted that the lower chambers 26 and 27 of the jacks are connected together by a conduit 33, just as the upper chambers 28, 29 are connected together by a conduit 34. The conduits 33 and 34 are connected to a distributor 35 at three positions - through conduits 36 and 37, respectively. In addition, a pump 38 is connected to a fluid reservoir 39 by its suction conduit 40, and to the distributor 35 by its discharge conduit 41. A-conduit 42 connects the distributor 35 to the reservoir 39.

Les trois positions du distributeur 35 correspondent
- la première position, à la communication des conduits 36 et 41, et, des conduits 37 et 42
- la deuxième position, à la communication des conduits 41 et 42, et à l'obturation des conduits 36 et 37 ; et,
- la troisième position, à la communication des conduits 36 et 42, et, des conduits 37 et 41.
The three positions of the distributor 35 correspond
- the first position, to the communication of conduits 36 and 41, and, of conduits 37 and 42
- the second position, to the communication of the conduits 41 and 42, and to the closure of the conduits 36 and 37; and,
- the third position, to the communication of conduits 36 and 42, and, of conduits 37 and 41.

Les avantages principaux de la disposition décrite peuvent être exposés en regard des figures. 2 à 4, lien que la configuration correspondante- soit, de préférence, évitée
L'effort de réaction G du sol 5 agit sur la semelle 31 et est transmis par le bras 7 aux divers axes et à la poutre 9. Le centre 31a de la semelle 31 étant distant de D de l'axe de pivotement 12 de la poutre 9 sur le châssis 1, l'effort G qui y est appli qué tend à faire pivoter la poutre dans le sens de la flèche~H.
The main advantages of the arrangement described can be explained with reference to the figures. 2 to 4, link that the corresponding configuration should preferably be avoided
The reaction force G of the ground 5 acts on the sole 31 and is transmitted by the arm 7 to the various axes and to the beam 9. The center 31a of the sole 31 being distant from D of the pivot axis 12 of the beam 9 on the chassis 1, the force G applied thereto tends to rotate the beam in the direction of the arrow ~ H.

Ainsi, une composante partielle G1 de l'effort G est transmise à la tige de piston 20 et est contenu par l'effet du fluide contenu dans la chambre 29, le distributeur 35 étant dispose soit dans- sa première position, soit replacé dans sa deuxième position. Thus, a partial component G1 of the force G is transmitted to the piston rod 20 and is contained by the effect of the fluid contained in the chamber 29, the distributor 35 being disposed either in its first position or replaced in its second position.

Du fait de l'alimentation en parallèle des vérins 14 et 15, la pression P du fluide contenu dans la chambre 28 du vérin 14 a evidenment une valeur identique à la pression P du fluide contenu dans la chambre 29 du vérin 15. Par conséquent, la composante partielle de l'effort G transmise à la tige de piston 16 est égale à G1. Cela veut dire, d'une part, que le vérin 14 s'oppose au pivotement de la poutre 9 autour de l'axe 11, d'autre part, qu'il reprend les efforts transmis par la poutre 9 travaillant en torsioag ce, bien que 1 surelle 30 soit hors d'appui du sol. Due to the parallel supply of the jacks 14 and 15, the pressure P of the fluid contained in the chamber 28 of the jack 14 obviously has a value identical to the pressure P of the fluid contained in the chamber 29 of the jack 15. Consequently, the partial component of the force G transmitted to the piston rod 16 is equal to G1. This means, on the one hand, that the jack 14 opposes the pivoting of the beam 9 around the axis 11, on the other hand, that it takes up the forces transmitted by the beam 9 working in torsioag ce, although 1 surelle 30 is out of support from the ground.

Le resultat le plus évident de la disposition décrite est que les efforts de maintien des semelles (ou de la semelle) en appui sur le sol 5 sont toujours repris par les deux vérins
14 et 15, a1ors que, dans les dispositions conformes à l'art anterieur, ces efforts n'étaient repris que par liunique vérin attelé au bras de -tabilisation effectivement en appui sur le sol. Sur le plan pratique, la disposition décrite permet de choisir des verins susceptibles de reFtendr des efforts seulement moitié moins grands que selon la technique antérieure, et donc de choisir des verins existants au lieu de devoir concevoir et réaliser des vérins d'un nouveau type.
The most obvious result of the arrangement described is that the efforts to keep the soles (or the sole) resting on the ground 5 are always taken up by the two jacks
14 and 15, a1ors that, in the provisions in accordance with the prior art, these efforts were taken up only by liunique jack coupled to the stabilization arm actually resting on the ground. On a practical level, the arrangement described makes it possible to choose actuators capable of reffering efforts only half as large as according to the prior art, and therefore to choose existing actuators instead of having to design and produce actuators of a new type.

L'invention n'est pas limitée à la réalisation décrite, mais en couvre au contraire toutes les variantes qui pourraient lui etre apportées sans sortir de son cadre, ni de son esprit.  The invention is not limited to the embodiment described, but on the contrary covers all the variants which could be made to it without departing from its scope or its spirit.

Claims (5)

REVENDICATIONS 1 - Dispositif de bras escamotables de stabilisation d'une plateforme mobile constitué par au moins deux bras (6 et 7) d'appui sur le sol (5) qui sont 1 - Device for retractable arms for stabilizing a mobile platform consisting of at least two arms (6 and 7) bearing on the ground (5) which are - attelés (9-10-11 et 9-10-12) à la plateforme (1) au moyen d'axes horizontaux (11 et 12), - coupled (9-10-11 and 9-10-12) to the platform (1) by means of horizontal axes (11 and 12), - distincts et espacés (L) l'un de l'autre, et, - distinct and spaced apart (L) from each other, and, - attelés à des vérins (14 et-15) de réglage de leur position relative par rapport à la plateforme, caractérise en ce que lesdits axes horizontaux (11 et 12) sont disposés dans le prolongement l'un de autre, cependant que les deux bras d'appui (6 et 7) sont fixés sur une poutre resistante (9) qui est attelée à la plate forme (1) au moyen desdits axes horizontaux (ll et 12). - coupled to jacks (14 and -15) for adjusting their relative position relative to the platform, characterized in that said horizontal axes (11 and 12) are arranged in the extension of one another, while the two support arms (6 and 7) are fixed on a resistant beam (9) which is coupled to the platform (1) by means of said horizontal axes (ll and 12). 2 - Dispositif de bras escamotables de stabilisation selon la revendication 1, caractérisé en ce qu'au moins deux vérins distincts (14 et 15j sont attelés (10) entre la poutre résistante (9) et la plateforme (1) et sont alimentés en paral lèle (33-36 et 34-37). 2 - Retractable stabilization arm device according to claim 1, characterized in that at least two separate cylinders (14 and 15j are coupled (10) between the resistant beam (9) and the platform (1) and are supplied in parallel lèle (33-36 and 34-37). 3 - Dispositif de bras escamotables de stabilisation selon la revendication 2, caractérisé en ce que les deux dits vérins sont espacés (X) l'un de l'autre, 3 - Retractable stabilization arm device according to claim 2, characterized in that the two said jacks are spaced (X) from one another, 4 - Dispositif de bras escamotables de stabilisation selon l'une quelconque des revendications là 3, caractérisé en ce que chacun des vérins (14 et 15) est articulé autour d'axes (18, 19 et 22, 23) paralleles aux dits axes horizontaux (11, 12) d'une part1 à la plateforme (1), d'autre part, à la poutre résistante (9). 4 - Retractable stabilization arm device according to any one of claims 3 there, characterized in that each of the jacks (14 and 15) is articulated around axes (18, 19 and 22, 23) parallel to said horizontal axes (11, 12) on the one hand1 to the platform (1), on the other hand, to the resistant beam (9). 5 - Dispositif de bras escamotables de stabilisation selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la poutre résistante (9) est montée pivotante (10-11, 10-12) par rapport à la plateforme (1) autour desdits axes horizontaux (ll et 12).  5 - Retractable stabilization arm device according to any one of claims 1 to 4, characterized in that the resistant beam (9) is pivotally mounted (10-11, 10-12) relative to the platform (1) around said horizontal axes (ll and 12).
FR8001655A 1980-01-25 1980-01-25 Mobile platform with twin retractable stabilising legs - has leg jack hydraulics connected to compensate for unequal ground height Granted FR2474415A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8001655A FR2474415A1 (en) 1980-01-25 1980-01-25 Mobile platform with twin retractable stabilising legs - has leg jack hydraulics connected to compensate for unequal ground height

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8001655A FR2474415A1 (en) 1980-01-25 1980-01-25 Mobile platform with twin retractable stabilising legs - has leg jack hydraulics connected to compensate for unequal ground height

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FR2474415A1 true FR2474415A1 (en) 1981-07-31
FR2474415B1 FR2474415B1 (en) 1984-10-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559441A1 (en) * 1984-02-13 1985-08-16 Poclain Sa MOBILE DEVICE HAVING A STABILIZATION DEVICE

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1842604A (en) * 1929-12-11 1932-01-26 Francis G Guest Vehicle jack
FR1199498A (en) * 1958-02-28 1959-12-14 Device for lifting and lowering the loading plane of towed vehicles
US2929517A (en) * 1957-06-10 1960-03-22 John R Phillips Stabilizer assembly for heavy construction equipment
FR1434616A (en) * 1965-04-30 1966-04-08 pivoting stabilizer element intended to hold the frames of public works machinery or other vehicles in working position
DE1484704A1 (en) * 1963-03-21 1969-11-13 Krueger Maschf Gerhard Mobile charger, especially for earthworks or the like.
FR2003692A1 (en) * 1968-03-12 1969-11-14 Kaiser Joseph
DE1811235A1 (en) * 1968-11-27 1970-06-04 Kloeckner Humboldt Deutz Ag Road vehicle carrying a crane
FR2294066A1 (en) * 1974-12-13 1976-07-09 Caterpillar Tractor Co DEVICE FOR SUPPORTING AND TRANSPORTING THE CHASSIS OF A VEHICLE

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1842604A (en) * 1929-12-11 1932-01-26 Francis G Guest Vehicle jack
US2929517A (en) * 1957-06-10 1960-03-22 John R Phillips Stabilizer assembly for heavy construction equipment
FR1199498A (en) * 1958-02-28 1959-12-14 Device for lifting and lowering the loading plane of towed vehicles
DE1484704A1 (en) * 1963-03-21 1969-11-13 Krueger Maschf Gerhard Mobile charger, especially for earthworks or the like.
FR1434616A (en) * 1965-04-30 1966-04-08 pivoting stabilizer element intended to hold the frames of public works machinery or other vehicles in working position
FR2003692A1 (en) * 1968-03-12 1969-11-14 Kaiser Joseph
DE1811235A1 (en) * 1968-11-27 1970-06-04 Kloeckner Humboldt Deutz Ag Road vehicle carrying a crane
FR2294066A1 (en) * 1974-12-13 1976-07-09 Caterpillar Tractor Co DEVICE FOR SUPPORTING AND TRANSPORTING THE CHASSIS OF A VEHICLE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559441A1 (en) * 1984-02-13 1985-08-16 Poclain Sa MOBILE DEVICE HAVING A STABILIZATION DEVICE
EP0152354A2 (en) * 1984-02-13 1985-08-21 Poclain Mobile apparatus with a stabilizing device
EP0152354A3 (en) * 1984-02-13 1985-09-25 Poclain Mobile apparatus with a stabilizing device
US4607862A (en) * 1984-02-13 1986-08-26 Poclain Mobile machine comprising a stabilizing device

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Publication number Publication date
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