FR2930536A1 - Hoisting engine for being mounted on transport truck in e.g. construction site, has mast and deflection comprising retraction unit for placing mast and deflection from deployed position to retracted position and vice versa - Google Patents

Hoisting engine for being mounted on transport truck in e.g. construction site, has mast and deflection comprising retraction unit for placing mast and deflection from deployed position to retracted position and vice versa Download PDF

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Publication number
FR2930536A1
FR2930536A1 FR0802374A FR0802374A FR2930536A1 FR 2930536 A1 FR2930536 A1 FR 2930536A1 FR 0802374 A FR0802374 A FR 0802374A FR 0802374 A FR0802374 A FR 0802374A FR 2930536 A1 FR2930536 A1 FR 2930536A1
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Prior art keywords
mast
lifting
carriage
bracket
machine according
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Granted
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FR0802374A
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French (fr)
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FR2930536B1 (en
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Gilles Dubief
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Gilles Dubief
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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
    • B66C23/18Cranes 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 specially adapted for use in particular purposes
    • B66C23/36Cranes 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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/48Manually-movable jib cranes for use in workshops
    • 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
    • B66C23/18Cranes 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 specially adapted for use in particular purposes
    • B66C23/26Cranes 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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/34Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • B66C23/342Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes with telescopic elements
    • 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
    • B66C23/18Cranes 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 specially adapted for use in particular purposes
    • B66C23/26Cranes 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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/34Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • B66C23/344Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes adapted for transport purposes
    • 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
    • B66C23/18Cranes 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 specially adapted for use in particular purposes
    • B66C23/26Cranes 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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/34Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • B66C23/346Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes with locking devices

Abstract

The engine has a mast (9) and a deflection (10) comprising a retraction unit for placing the mast and the deflection from a deployed position to a retracted position and vice versa. The deflection is carried by a pivoting sub-base (13) mounted to top of the mast, and includes a cross-arm (14) articulated on the sub-base around a transversal axle (15). The mast is maintained in a position in a frame (12) by using a traversing gudgeon (16).

Description

L'invention concerne les appareils de levage et de manutention et, plus particulièrement, ceux du type grue roulante, de faible encombrement. Les grues roulantes dites "d'atelier" sont des engins de petite taille destinée à la manutention des charges faibles ou moyennes qui sont utilisées dans les lieux et les emplois les plus divers, ateliers, garages, chantiers. De ce fait, et afin de permettre leur parcage et leur transport, la hauteur et le rayon d'action de la grue demeurent souvent faibles, limitant ainsi leur utilisation. Il existe une demande pour un engin de ce type de faible encombrement, aisément maniable sans assistance électrique peu coûteuse et permettant pourtant de disposer d'une hauteur de mât et d'un rayon d'action important. Le but de l'invention est donc de proposer un engin de levage dont la grue puisse se replier pour être transportée ou parquée et qui puisse se manipuler de façon manuelle. A cet effet, la présente invention a pour objet un engin de levage monté sur un chariot portant une grue composée d'un mât et d'une flèche, comprenant des moyens d'escamotage pour pouvoir placer la flèche et le mât d'une position déployée vers une position escamotée et inversement, ladite flèche étant portée par un socle pivotant. Cette flèche est constituée d'un socle monté au sommet du mât et d'une potence articulée sur le socle autour d'un axe transversal, ledit mât étant lui-même articulé en rotation autour d'un axe transversal agencé dans un bâti fixé sur le châssis du chariot, de façon que, en fin de course, la potence soit placée en appui longitudinal sur le mât et en position horizontale. The invention relates to lifting and handling devices and, more particularly, those of the type of crane, small footprint. The so-called "workshop cranes" are small machines for the handling of low or medium loads that are used in the most diverse places and jobs, workshops, garages, construction sites. Therefore, and in order to allow their parking and transport, the height and the radius of action of the crane often remain low, thus limiting their use. There is a demand for a machine of this type of small footprint, easily manageable without electric assistance inexpensive and yet allowing to have a mast height and a large radius of action. The object of the invention is therefore to provide a hoist whose crane can fold to be transported or parked and can be manipulated manually. For this purpose, the subject of the present invention is a lifting machine mounted on a carriage carrying a crane composed of a mast and an arrow, comprising retraction means for placing the boom and the mast in a position. deployed to a retracted position and vice versa, said boom being carried by a pivoting base. This boom consists of a base mounted at the top of the mast and a bracket articulated on the base around a transverse axis, said mast itself articulated in rotation about a transverse axis arranged in a frame fixed on the frame of the carriage, so that, at the end of the race, the bracket is placed in longitudinal support on the mast and in a horizontal position.

Selon d'autres caractéristiques avantageuses de l'invention : - Le mât est maintenu en position dans le bâti au moyen d'un tourillon traversant. - La potence est retenue sur le socle par un mécanisme à libération automatique par ressort. - Le socle est monté en rotation libre sur roulements dans le mât. - La rotation de la flèche est bloquée par un système de verrouillage. - La potence comporte un profilé sur les ailes inférieures duquel roule un chariot à galets équipé d'un dispositif de levage. - Avantageusement, le dispositif de levage est un équilibreur pneumatique. - L'extrémité de la potence est munie d'une roulette. - La base du mât porte une butée destinée à venir au contact de la potence lors du basculement du mât autour de 15 son axe. - Cette butée porte un système de verrouillage pour assembler la potence et le mât. - Une armature montée sur le chariot reçoit en appui l'ensemble formé par le mât et la flèche, à la fin de 20 l'opération de basculement. - En variante, la flèche de la grue comporte une potence composée d'une partie verrouillée sur le socle et d'une partie articulée en rotation autour d'un axe d'articulation porté par l'extrémité libre de la partie fixe de 25 la potence. D'autres caractéristiques et avantages de l'invention apparaîtront clairement à la lecture de la description ci-après, donnée à titre indicatif en référence aux dessins annexés dans lesquels : 30 La figure 1 est une vue en élévation d'un engin de levage selon l'invention, La figure 2 est une vue de dessus de l'engin de la figure 1, Les figures 3 à 5 représentent les phases de pliage de l'engin selon les figures précédentes, La figure 6 est une vue en élévation d'un second mode de réalisation de l'invention et, La figure 7 est une vue de dessus de l'engin de la figure 6. Les figures 8 et 9 illustrent un autre mode de 10 réalisation, la figure 8 étant une vue de la position repliée tandis que la figure 9 illustre la position déployée. Sur la figure 1 on a représenté un engin de levage monté sur un chariot roulant (1) formé, par exemple, d'un châssis mécano-soudé porté par un essieu fixe (2) et un essieu 15 articulé (3), comme on le voit mieux sur la figure 2. Chaque essieu est équipé par exemple de deux roues (4), par exemple du type forte charge increvable, montées en rotation libre sur l'essieu. L'essieu articulé (3) assure la direction du chariot. 20 Comme cela est bien connu, [es changements de direction se font à l'aide d'une barre (3') manoeuvrée à la main. Le chariot (1) est encore muni latéralement de quatre bras (5) dont l'une des extrémités est montée sur le châssis au moyen d'une articulation (6) permettant au bras de se déployer 25 jusqu'à la position (5)' perpendiculairement à l'axe du chariot. En position déployée ces bras servent à la stabilisation de l'engin en position de levage. Leur deuxième extrémité porte, pour ce faire, un pied (7) réglable en hauteur. Un mécanisme de blocage du 'bras en position déployée est 30 également prévu. According to other advantageous features of the invention: - The mast is held in position in the frame by means of a trunnion. - The stem is retained on the base by an automatic spring release mechanism. - The base is mounted in free rotation on bearings in the mast. - The rotation of the boom is blocked by a locking system. - The stem has a profile on the lower wings of which rolls a roller carriage equipped with a lifting device. Advantageously, the lifting device is a pneumatic balancer. - The end of the gallows is equipped with a wheel. The base of the mast carries a stop intended to come into contact with the stem when tilting the mast around its axis. - This stop carries a locking system to assemble the stem and the mast. An armature mounted on the carriage receives support from the assembly formed by the mast and the boom at the end of the tilting operation. As a variant, the boom of the crane comprises a bracket consisting of a part locked on the base and a part articulated in rotation about an axis of articulation carried by the free end of the fixed part of the crane. gallows. Other characteristics and advantages of the invention will become clear from reading the following description, given by way of example with reference to the accompanying drawings, in which: FIG. 1 is an elevational view of a hoist according to FIG. 2 is a view from above of the machine of FIG. 1; FIGS. 3 to 5 show the folding phases of the machine according to the preceding figures; FIG. 6 is an elevation view of FIG. A second embodiment of the invention and FIG. 7 is a top view of the machine of FIG. 6. FIGS. 8 and 9 illustrate another embodiment, FIG. 8 being a view of the position. folded while Figure 9 illustrates the deployed position. FIG. 1 shows a lifting gear mounted on a rolling carriage (1) formed, for example, of a mechanically welded chassis carried by a fixed axle (2) and an articulated axle (3), as can be seen in FIG. can be seen better in FIG. 2. Each axle is equipped, for example, with two wheels (4), for example of the heavy duty indestructible type, mounted in free rotation on the axle. The articulated axle (3) provides the direction of the carriage. As is well known, changes of direction are made by means of a bar (3 ') operated by hand. The carriage (1) is further provided laterally with four arms (5), one end of which is mounted on the frame by means of a hinge (6) allowing the arm to extend to the position (5). perpendicular to the axis of the carriage. In the deployed position these arms are used to stabilize the machine in the lifting position. Their second end carries, for this purpose, a foot (7) adjustable in height. An arm locking mechanism in the deployed position is also provided.

On ajoutera qu'un dispositif de lestage du chariot est également prévu. Ce dispositif est, par exemple, constitué de cubes de béton logés dans le châssis. Le chariot (1) porte une grue (8) composée d'un mât (9) et d'une flèche (10). Le mât (9) est monté articulé en rotation autour d'un axe (11) transversal dans un bâti (12) fixé sur le châssis. La flèche (10) est constituée d'un socle (13) monté au sommet du mât (9) et d'une potence (14) articulée sur le 10 socle (13) autour d'un axe (15). Le mât (9) est maintenu en position dans le bâti (12) au moyen d'un tourillon traversant (16), escamotable manuellement, et la potence (14) est retenue sur le socle (13) par un mécanisme (17) à libération automatique par ressort. 15 Le socle (13) est monté en rotation libre avantageusement sur roulements dans le mât (9) de sorte que la flèche (10) peut effectuer une rotation de 360°, dans le sens lévogyre ou dextrogyre autour du mât (9). L'effort de rotation est par exemple fourni par l'opérateur. 20 La rotation de la flèche peut être bloquée par un système de verrouillage actionné manuellement. Ce blocage est, notamment, utilisé dans les opérations de pliage de la grue, comme on va le voir ci-après. La potence (14) comporte un profilé (18) sur les ailes 25 inférieures duquel roule un chariot à galets (19) équipé d'un treuil (20). Ce treuil peut être électrique ou, de façon préférentielle, un équilibreur pneumatique qui permet de lever les charges et de réaliser un réglage vertical de la charge suspendue par un simple effort exercé par l'opérateur sur 30 celle-ci, vers le haut ou vers le bas. Le chariot (19) peut être motorisé ou non, dans ce dernier cas, c'est l'opérateur qui fournit l'effort de déplacement. It will be added that a device for weighting the carriage is also provided. This device is, for example, made of concrete cubes housed in the frame. The carriage (1) carries a crane (8) consisting of a mast (9) and an arrow (10). The mast (9) is articulated in rotation about a transverse axis (11) in a frame (12) fixed to the frame. The boom (10) consists of a base (13) mounted at the top of the mast (9) and a bracket (14) articulated on the base (13) about an axis (15). The mast (9) is held in position in the frame (12) by means of a trunnion (16), manually retractable, and the bracket (14) is retained on the base (13) by a mechanism (17) to automatic release by spring. The base (13) is advantageously mounted in free rotation on bearings in the mast (9) so that the boom (10) can rotate 360 °, in the levorotatory or dextrorotatory direction around the mast (9). The rotational force is for example provided by the operator. The rotation of the boom can be blocked by a manually operated locking system. This blockage is, in particular, used in the folding operations of the crane, as will be seen below. The stem (14) has a profile (18) on the lower flanges 25 which rolls a roller carriage (19) equipped with a winch (20). This winch can be electric or, preferably, a pneumatic balancer that allows the loads to be lifted and to adjust the suspended load vertically by a simple effort exerted by the operator on the latter, upwards or downwards. the bottom. The carriage (19) can be motorized or not, in the latter case, it is the operator who provides the displacement force.

L'extrémité de la potence (14) est encore munie d'une roulette 21 dont on va expliquer ci-après la fonction. Selon l'invention, la grue (8) peut être repliée lorsqu'elle n'est pas utilisée. Les figures 3 à 5 représentent les différentes 5 phases de cette opération. La rotation de la flèche (10) étant bloquée par le système de verrouillage, un câble (22) (figure 3) est monté entre un treuil de levage (23) fixé sur le chariot (1) et la gâchette (24) solidaire du socle (13) agissant sur le mécanisme (17) à io libération automatique de façon à dissocier la potence (14) dudit socle (13). La potence (14) pivote alors autour de son axe (15) jusqu'à ce que la roulette (21) portée par l'extrémité de la potence soit en contact avec le sol. 15 On remarquera que dans cette position, la grue peut être déplacée, la roulette (21) assurant sa stabilité. Le tourillon traversant (16) maintenant le mât (9) dans le bâti (12) est ensuite retiré. Le mât (9) est alors basculé autour de son axe (11) (figure 4) jusqu'à ce que la butée (25) 20 solidaire de sa base vienne au contact du profilé (18) de la potence (14). Le système de verrouillage (26) porté par ladite butée assemble alors le profilé (18) et le mât (9). La poursuite du mouvement de bascule du mât (9) entraîne ainsi également la potence (14) de manière que 25 l'ensemble constitué par le mât et la flèche (10) se retrouve, à la fin de l'opération, parallèle au sol, en appui sur une armature (27) montée sur le chariot (1) (figure 5). Le mouvement de rotation du mât (9) peut être réalisé manuellement ou mécaniquement par action du treuil (23) et 30 du dispositif de manoeuvre (28) fixé à la base du mât (9). Le déploiement de la grue en position d'utilisation se fait, évidemment, en sens inverse. The end of the bracket (14) is further provided with a wheel 21 whose function will be explained below. According to the invention, the crane (8) can be folded when not in use. Figures 3 to 5 show the different phases of this operation. The rotation of the boom (10) is blocked by the locking system, a cable (22) (Figure 3) is mounted between a hoist winch (23) fixed on the carriage (1) and the trigger (24) integral with the base (13) acting on the automatic release mechanism (17) so as to separate the bracket (14) from said base (13). The stem (14) then pivots about its axis (15) until the wheel (21) carried by the end of the stem is in contact with the ground. It will be appreciated that in this position the crane can be moved, the wheel (21) ensuring its stability. The trunnion (16) holding the mast (9) in the frame (12) is then removed. The mast (9) is then tilted about its axis (11) (Figure 4) until the abutment (25) 20 integral with its base comes into contact with the profile (18) of the bracket (14). The locking system (26) carried by said stop then assembles the profile (18) and the mast (9). Continued tilting movement of the mast (9) thus also causes the bracket (14) so that the assembly consisting of the mast and the boom (10) is found, at the end of the operation, parallel to the ground , resting on an armature (27) mounted on the carriage (1) (Figure 5). The rotation movement of the mast (9) can be achieved manually or mechanically by the action of the winch (23) and the maneuvering device (28) attached to the base of the mast (9). The deployment of the crane in the position of use is, of course, in the opposite direction.

Le treuil de levage (23), qui est réversible et autofreiné, actionne le dispositif de manoeuvre (28) de façon à faire pivoter le mât (9) autour de l'axe (11) et à le ramener dans le bâti (12) dans lequel il est de nouveau maintenu par le tourillon traversant (16). Le treuil actionne ensuite le câble (22) pour amener la potence (14) au contact du socle (13) et verrouiller l'ensemble avec le mécanisme (17). La grue est de nouveau en position d'utilisation. The lifting winch (23), which is reversible and self-braking, actuates the operating device (28) so as to rotate the mast (9) about the axis (11) and bring it back into the frame (12) in which it is again held by the trunnion (16). The winch then actuates the cable (22) to bring the bracket (14) in contact with the base (13) and lock the assembly with the mechanism (17). The crane is in the use position again.

Un deuxième mode de réalisation de l'invention est représenté, figures 6 et 7. La flèche (29) de la grue comporte, dans ce cas, une potence composée d'une partie (30) verrouillée sur le socle (31) et d'une partie (32) articulée en rotation autour d'un axe d'articulation (33) portée par l'extrémité libre de la partie fixe (30) de la potence. Ce mode de réalisation permet à la fois de diminuer l'encombrement de la flèche et d'obtenir deux rayons de manoeuvre pour le treuil (34). A second embodiment of the invention is shown, Figures 6 and 7. The boom (29) of the crane comprises, in this case, a bracket composed of a portion (30) locked on the base (31) and a portion (32) articulated in rotation about an articulation axis (33) carried by the free end of the fixed part (30) of the bracket. This embodiment makes it possible at the same time to reduce the bulk of the boom and to obtain two operating radii for the winch (34).

En effet, un premier mouvement circulaire (35) est obtenu par rotation de l'extrémité (32) de la potence autour d'un axe d'articulation (33) alors que la rotation du socle (31) dans le mât (9) entraîne un deuxième mouvement circulaire (36) de la flèche (29). Indeed, a first circular movement (35) is obtained by rotation of the end (32) of the stem around an axis of articulation (33) while the rotation of the base (31) in the mast (9) causes a second circular movement (36) of the arrow (29).

Les figures 8 et 9 illustrent un autre mode de réalisation, selon lequel le mât: (9) monté sur le chariot roulant (1) est télescopique, pour prendre deux positions, à savoir, une position escamotée telle qu'illustrée à la figure 8, et une position déployée d'utilisation telle qu'illustrée à la figure 9. Figures 8 and 9 illustrate another embodiment, according to which the mast: (9) mounted on the rolling carriage (1) is telescopic, to take two positions, namely, a retracted position as illustrated in Figure 8 , and an extended position of use as illustrated in Figure 9.

Sur les figures 8 et 9 les éléments identiques aux modes de réalisation précédents portent les même références que ceux mentionnés sur ces modes de réalisation précédents. Selon ce troisième mode de réalisation, le mât (9) est constitué de plusieurs éléments de mât (9', 9", 9"') montés en coulissement vertical l'un par rapport à l'autre. La flèche (10) est par exemple celle du type de la réalisation des figures 6 et 7, à savoir constituée par une partie (30) verrouillée sur le socle (13) et d'une partie (32) articulée en rotation autour d'un axe de pivotement vertical (33) portée par l'extrémité libre de la partie fixe (30) de la potence. Ainsi, la partie d'extrémité (32) peut être repliée dans sa position escamotée sur la partie fixe (30). Notons qu'il est prévu un dispositif de verrouillage permettant de bloquer la partie mobile (32) par rapport à la partie fixe (30). Bien entendu, l'invention n'est pas limitée aux modes de réalisation que l'on vient de décrire. C'est ainsi, par exemple, que le chariot peut être motorisé à l'aide d'un moteur frein équipant l'essieu rigide non 15 directionnel. Il est également possible de motoriser, sans sortir de l'invention, le mouvement du mât et de la flèche lors des opérations de pliage et de dépliage de même que les rotations de la flèche et le mouvement du treuil de levage de la charge.In Figures 8 and 9 the elements identical to the previous embodiments have the same references as those mentioned in these previous embodiments. According to this third embodiment, the mast (9) consists of several mast elements (9 ', 9 ", 9"') mounted in vertical sliding relative to each other. The arrow (10) is for example that of the type of embodiment of Figures 6 and 7, namely constituted by a portion (30) locked on the base (13) and a portion (32) articulated in rotation around the a vertical pivot axis (33) carried by the free end of the fixed part (30) of the bracket. Thus, the end portion (32) can be folded in its retracted position on the fixed part (30). Note that there is provided a locking device for locking the movable part (32) relative to the fixed part (30). Of course, the invention is not limited to the embodiments that have just been described. Thus, for example, the carriage can be motorized with a brake motor fitted to the non-directional rigid axle. It is also possible to motorize, without departing from the invention, the movement of the mast and the boom during folding and unfolding operations as well as the rotations of the boom and the movement of the winch lifting the load.

20 L'engin que l'on vient de décrire présente de nombreux avantages. L'articulation de la flèche et du mât permet un parcage et un transport aisé de l'ensemble. La rotation libre de la flèche avantageusement munie d'un équilibreur pneumatique porté par un chariot à galets assure une grande 25 liberté de mouvement au dispositif. The machine just described has many advantages. The articulation of the boom and the mast allows a parking and easy transportation of the whole. The free rotation of the boom advantageously provided with a pneumatic balancer carried by a roller carriage provides great freedom of movement to the device.

Claims (18)

REVENDICATIONS1. Engin de levage monté sur un chariot (1) portant une grue (8) composée d'un mât (9) et d'une flèche (10), (29), caractérisé en ce que la flèche (10) et le mât (9) comprend des moyens d'escamotage pour pouvoir placer la flèche (10) et le mât (9) d'une position déployée vers une position escamotée et inversement. REVENDICATIONS1. Lifting device mounted on a carriage (1) carrying a crane (8) composed of a mast (9) and an arrow (10), (29), characterized in that the boom (10) and the mast ( 9) comprises means of retraction to be able to place the boom (10) and the mast (9) from an extended position to a retracted position and vice versa. 2. Engin de levage selon la revendication 1, caractérisé en ce que la flèche (10), (29) est portée par d'un io socle pivotant (13) monté au sommet du mât (9) 2. Lifting machine according to claim 1, characterized in that the arrow (10), (29) is carried by a pivoting base (13) mounted at the top of the mast (9). 3. Engin de levage selon la revendication précédente, caractérisé en ce que la flèche (10) comprend d'une potence (14) articulée sur le socle (13) autour d'un axe (15) 15 transversal, ledit mât (9) étant lui-même articulé en rotation autour d'un axe (11) transversal, agencé dans un bâti (12) fixé sur le châssis du chariot (1) de façon que, en fin de course, la potence (14) soit placée en appui longitudinal sur le mât (9) et en position horizontale. 20 3. Lifting machine according to the preceding claim, characterized in that the boom (10) comprises a bracket (14) articulated on the base (13) about a transverse axis (15) 15, said mast (9) itself being articulated in rotation about a transverse axis (11), arranged in a frame (12) fixed on the frame of the carriage (1) so that, at the end of the stroke, the bracket (14) is placed in longitudinal support on the mast (9) and in horizontal position. 20 4. Engin de levage selon la revendication 3, caractérisé en ce que le mât (9) est maintenu en position dans le bâti (12) au moyen d'un tourillon traversant (16). 25 4. Lifting machine according to claim 3, characterized in that the mast (9) is held in position in the frame (12) by means of a trunnion (16). 25 5. Engin de levage selon la revendication 2 ou 3, caractérisé en ce que la potence (14) est retenue sur le socle (13) par un mécanisme (17) à libération automatique par ressort. 30 5. Lifting machine according to claim 2 or 3, characterized in that the bracket (14) is retained on the base (13) by a mechanism (17) spring automatic release. 30 6.Engin de levage selon l'une des revendications précédentes, caractérisé en ce que la base du mât (9) porte une butée (25) destinée à venir au contact de la potence (14) lors du basculement du mât autour de son axe (11). 6.Engin lifting according to one of the preceding claims, characterized in that the base of the mast (9) carries a stop (25) intended to come into contact with the bracket (14) when tilting the mast around its axis (11). 7. Engin de levage selon. la revendication , caractérisé en ce que la butée (25) porte un système de verrouillage (26) pour assembler la potence (14) et le mât (9). 7. Lifting gear according to. the claim, characterized in that the stop (25) carries a locking system (26) to assemble the bracket (14) and the mast (9). 8. Engin de levage selon l'une des revendications précédentes, caractérisé en ce qu'une armature (27) montée sur le chariot (1) reçoit en appui l'ensemble formé par le mât (9) et la flèche (10), à la fin de l'opération de basculement. 8. Lifting device according to one of the preceding claims, characterized in that a frame (27) mounted on the carriage (1) receives in support the assembly formed by the mast (9) and the arrow (10), at the end of the failover operation. 9. Engin de levage selon l'une des revendications précédentes, caractérisé en ce que l'extrémité de la potence (14) est munie d'une roulette (21). 9. Lifting device according to one of the preceding claims, characterized in that the end of the bracket (14) is provided with a roller (21). 10. Engin de levage selon l'une quelconque des 15 revendications 1 à 2, caractérisé en ce que le mât (9) monté sur le chariot roulant (1) est télescopique, pour prendre deux positions, à savoir, une position escamotée, et une position déployée d'utilisation. Lifting machine according to one of Claims 1 to 2, characterized in that the mast (9) mounted on the rolling carriage (1) is telescopic, to assume two positions, namely a retracted position, and a deployed position of use. 11. Engin de levage selon la revendication 10, 20 caractérisé en ce que le mât: (9) est constitué de plusieurs éléments de mât (9', 9", 9') montés en coulissement vertical l'un par rapport à l'autre. Lifting apparatus according to claim 10, characterized in that the mast: (9) consists of a plurality of mast members (9 ', 9 ", 9') mounted vertically sliding relative to one another. other. 12. Engin de levage selon la revendication 11, caractérisé en ce que la flèche (10) constituée par une partie 25 (30) verrouillée sur le socle (13) et d'une partie (32) articulée en rotation autour d'un axe de pivotement vertical (33) portée par l'extrémité libre de la partie fixe (30) de la potence. 12. Lifting machine according to claim 11, characterized in that the boom (10) constituted by a portion (30) locked on the base (13) and a portion (32) articulated in rotation about an axis vertical pivoting device (33) carried by the free end of the fixed part (30) of the bracket. 13. Engin de levage selon la revendication 12, caractérisé en ce qu'il est prévu un dispositif de verrouillage 30 permettant de bloquer la partie mobile (32) par rapport à la partie fixe (30) Lifting machine according to Claim 12, characterized in that a locking device 30 is provided for locking the movable part (32) with respect to the fixed part (30). 14. Engin de levage selon l'une des revendications précédentes, caractérisé en ce que la rotation de la flèche (10) 35 est bloquée par un système de verrouillage. 10 14. Lifting machine according to one of the preceding claims, characterized in that the rotation of the boom (10) 35 is blocked by a locking system. 10 15. Engin de levage selon l'une des revendications précédentes, caractérisé en ce que la potence (14) comporte un profilé (18) sur les ailes inférieures duquel roule un chariot à galets (19) équipé d'un dispositif de levage (20). Lifting device according to one of the preceding claims, characterized in that the bracket (14) comprises a profile (18) on the lower wings of which rolls a roller carriage (19) equipped with a lifting device (20). ). 16. Engin de levage selon la revendication 15, caractérisé en ce que le dispositif de levage (20) est un équilibreur pneumatique. Lifting machine according to claim 15, characterized in that the lifting device (20) is a pneumatic balancer. 17. Engin de levage selon l'une des revendications précédentes, caractérisé en ce que le chariot (1) est muni latéralement de quatre bras (5) dont l'une des extrémités est montée sur le chariot au moyen d'une articulation (6) permettant au bras de se déployer jusqu'à la position (5') perpendiculaire à l'axe du chariot. Lifting device according to one of the preceding claims, characterized in that the carriage (1) is laterally provided with four arms (5), one end of which is mounted on the carriage by means of a hinge (6). ) allowing the arm to deploy to the position (5 ') perpendicular to the axis of the carriage. 18. Engin de levage selon la revendication 17, caractérisé en ce que l'extrémité libre des bras (5) porte un 20 pied (7) réglable en hauteur. 18. Lifting machine according to claim 17, characterized in that the free end of the arms (5) carries a foot (7) adjustable in height.
FR0802374A 2008-04-28 2008-04-28 MOBILE WORKSHOP Expired - Fee Related FR2930536B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104291234A (en) * 2014-08-25 2015-01-21 舟山中远船务工程有限公司 Portable crane used for unloading cargo oil pump
FR3108598A1 (en) * 2020-03-30 2021-10-01 Linck Brick Manipulator Arm

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1434262A (en) * 1965-02-15 1966-04-08 Richier Sa Method and mechanism for developing and folding the tower of a building crane
DE1248257B (en) * 1962-04-06 1967-08-24 Potain & Cie Ets F Boom tower crane
DE2101839A1 (en) * 1971-01-15 1972-07-20 Reich Fa Wilhelm Method for moving a tower crane into road transport position
DE19828898A1 (en) * 1998-06-18 1999-12-23 Else Horst Mini-crane with suction device for picking up and laying, for example, porous concrete blocks and other smooth-faced building components

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1248257B (en) * 1962-04-06 1967-08-24 Potain & Cie Ets F Boom tower crane
FR1434262A (en) * 1965-02-15 1966-04-08 Richier Sa Method and mechanism for developing and folding the tower of a building crane
DE2101839A1 (en) * 1971-01-15 1972-07-20 Reich Fa Wilhelm Method for moving a tower crane into road transport position
DE19828898A1 (en) * 1998-06-18 1999-12-23 Else Horst Mini-crane with suction device for picking up and laying, for example, porous concrete blocks and other smooth-faced building components

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104291234A (en) * 2014-08-25 2015-01-21 舟山中远船务工程有限公司 Portable crane used for unloading cargo oil pump
CN104291234B (en) * 2014-08-25 2016-05-18 舟山中远船务工程有限公司 A kind of Portable crane for Cargo Oil Pump deliver from vault
FR3108598A1 (en) * 2020-03-30 2021-10-01 Linck Brick Manipulator Arm

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