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EP0110786B1 - Variable reach crane jib with automatic counterbalancing device - Google Patents

Variable reach crane jib with automatic counterbalancing device Download PDF

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Publication number
EP0110786B1
EP0110786B1 EP83402277A EP83402277A EP0110786B1 EP 0110786 B1 EP0110786 B1 EP 0110786B1 EP 83402277 A EP83402277 A EP 83402277A EP 83402277 A EP83402277 A EP 83402277A EP 0110786 B1 EP0110786 B1 EP 0110786B1
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EP
European Patent Office
Prior art keywords
jack
counterweight
controlling
arm
chamber
Prior art date
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Expired
Application number
EP83402277A
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German (de)
French (fr)
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EP0110786A1 (en
Inventor
Serge Montgon
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.)
S.M.S., SOCIETE MONTGON SYSTEMES
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Sms Montgon Systemes Ste
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Application filed by Sms Montgon Systemes Ste filed Critical Sms Montgon Systemes Ste
Priority to AT83402277T priority Critical patent/ATE32868T1/en
Publication of EP0110786A1 publication Critical patent/EP0110786A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes 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
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples

Definitions

  • the invention relates to devices of the type of jib cranes with articulated or telescopic arms allowing the lifting or handling of loads with the grapple, the hook winch or the hook. It relates more particularly to a device ensuring the automatic balancing of the boom of such cranes as a function of the variation in the range of this boom.
  • the crane boom is generally articulated on the turret, without balancing, the counterweight being itself fixed on the turret.
  • the counterweight in fact only serves to reduce the overturning moment but by a fixed value and without compensation depending on the range of the boom.
  • the lifting cylinders of the main arm or the auxiliary arm must ensure both the lifting of the load, the boom and the load gripper.
  • the object of the invention is to avoid the above-mentioned drawbacks of known devices and, for this purpose, it proposes to equip the crane jib with a device ensuring automatically the balancing of this jib as a function of the variation. of its reach.
  • the value of the counterweight being calculated as a function of the dead weight of the elements of the boom (including the gripping means such as grapple or muffle which it supports) and according to the lever arms, the synchronized movements of the auxiliary arm and the counterweight (by supplying the control cylinder of one of them by means of the hydraulic fluid discharged from the control cylinder of the other) thus make it possible to obtain a choice of total or partial balancing of the boom.
  • the device according to the invention also makes it possible to considerably reduce the powers of the motor and receiver organs necessary for the movements of the load, and therefore to reduce energy consumption.
  • a hydraulic distributor in a first position, ensures the supply of hydraulic fluid to the chamber of the counterweight control cylinder which is not connected to the control cylinder of the auxiliary arm while the chamber of the control cylinder of the auxiliary arm which is not connected to the counterweight control cylinder is in communication with a fluid reservoir, the other chamber of the counterweight control cylinder transferring the hydraulic fluid to the other chamber of the auxiliary arm control cylinder.
  • This distributor in a second position, supplies fluid to the chamber of the control cylinder of the auxiliary arm which is not connected to the control cylinder of the counterweight and puts in communication with the fluid tank the chamber of the control cylinder of the counterweight not connected to the control cylinder of the auxiliary arm, while the chamber of the control cylinder of the auxiliary arm which is connected to the chamber of the control cylinder of the counterweight transmits the hydraulic fluid to this chamber.
  • the balancing device according to the invention can be applied to arrows with articulated arms as well as to arrows with telescopic arms.
  • FIG. 1 there is shown in 1 the crane base, in 2 the pivoting turret overhanging this base and in 3 the main boom arm hinged towards its rear end to the turret 2, around an axis horizontal 4, in order to be able to pivot in a vertical plane under the control of a hydraulic cylinder 5.
  • a hydraulic cylinder 5 At the front end of the main arm 3 is articulated, around a horizontal axis 6, an auxiliary arm 7 whose front end carries a gripping means constituted, in the example shown, by a grapple 8.
  • the angled rear end of the auxiliary arm 7 is integral with the free end of the rod 9 of a hydraulic cylinder 10 whose body is articulated on a yoke 11 secured to the main arm 3.
  • a balance 13 secured to a counterweight 14.
  • the balance 13 is articulated at one end of the rod 15 of a hydraulic cylinder 16, the body is pivotally attached to a yoke 17 carried by the main arm 3.
  • the operator then places the distributor 20 in the position corresponding to its right-hand part, looking at FIG. 1, so that the chamber 26 of the jack 16 is is supplied with pressurized fluid and, by displacement of the rod 15, simultaneously produces a tilting of the counterweight 14 and, due to the connection between the chambers 29 and 28 of the jacks 16 and 10, a lifting of the auxiliary arm 7.
  • the counterweight 14 is calculated as a function of the dead weight of the elements of the boom and of the grapple 8, and as a function of the lever arms, the boom is therefore permanently balanced (in whole or in part), on the assembly formed by the base 1 and the turret 2.
  • the distributor 20 is brought back to its intermediate position and the operations of lifting and lowering the load are then carried out by the jack 5.
  • the operator decides to reduce the reach of the boom, he will then have to place the distributor 20 in the position corresponding to its left part, looking at FIG. 1.
  • the chamber 24 of the jack 10 is then supplied, which produces the tilting of the auxiliary arm 7 and simultaneously, by the connection of the chamber 28 of this jack with the chamber 29 of the jack 16, which ensures the lifting of the counterweight 14 to ensure the automatic balancing.
  • FIG. 2 differs mainly from that of Figure 1 only in that the auxiliary arm 7 is mounted to slide telescopically inside the main arm 3, under the action of the hydraulic cylinder 10 '.
  • the grapple 8 in FIG. 1 has also been replaced by a system with winch 30 and block 31.
  • the hydraulic control device is practically the same as that in FIG. 1, except that the conduit 23 ′ connects the distributor. 20 to the annular section chamber 28 'of the jack 10', while the conduit 27 'connects in series the full section chamber 24' of the jack 10 'and the annular section chamber 29' of the jack 16 '.
  • the user will place the distributor 20 in its position corresponding to its right-hand part, looking at FIG.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

The invention provides a system for automatically balancing the jib of cranes of the type with articulated arms or telescopic arms depending on the variation of the reach of this jib. The annular section chambers of the hydraulic cylinder controlling the auxiliary arm of the crane and of the hydraulic cylinder controlling the pivoting arm carrying the counterweight are connected in series by a duct. The full section chambers of the hydraulic cylinders are connected selectively, by actuation of a valve, either to the pressure line or to the return line. In the right-hand position of the valve, the counterweight is pivoted and the arm is raised simultaneously, whereas in the opposite position of the valve the arm is lowered and the counterweight is raised.

Description

L'invention concerne les appareils du type des grues à flèche à bras articulés ou télescopiques permettant le levage ou la manutention de charges au grappin, au treuil-crochet ou au crochet. Elle concerne plus particulièrement un dispositif assurant l'équilibrage automatique de la flèche de telles grues en fonction de la variation de la portée de cette flèche.The invention relates to devices of the type of jib cranes with articulated or telescopic arms allowing the lifting or handling of loads with the grapple, the hook winch or the hook. It relates more particularly to a device ensuring the automatic balancing of the boom of such cranes as a function of the variation in the range of this boom.

Dans les appareils connus de ce genre, la flèche de grue est généralement articulée sur la tourelle, sans équilibrage, le contrepoids étant lui-même fixé sur la tourelle. Dans ce cas, le contrepoids ne sert en fait qu'à réduire le moment de renversement mais d'une valeur fixe et sans compensation en fonction de la portée de la flèche. De plus, les vérins de levage du bras principal ou du bras auxiliaire doivent assurer à la fois le levage de la charge, de la flèche et de l'organe de préhension de la charge.In known devices of this kind, the crane boom is generally articulated on the turret, without balancing, the counterweight being itself fixed on the turret. In this case, the counterweight in fact only serves to reduce the overturning moment but by a fixed value and without compensation depending on the range of the boom. In addition, the lifting cylinders of the main arm or the auxiliary arm must ensure both the lifting of the load, the boom and the load gripper.

L'invention a pour objet d'éviter les inconvénients mentionnés ci-dessus des appareils connus et, à cet effet, elle propose d'équiper la flèche de grue d'un dispositif assurant automatiquement l'équilibrage de cette flèche en fonction de la variation de sa portée.The object of the invention is to avoid the above-mentioned drawbacks of known devices and, for this purpose, it proposes to equip the crane jib with a device ensuring automatically the balancing of this jib as a function of the variation. of its reach.

Dans le document EP-A-0 033 060 on a déjà proposé, pour assurer un tel équilibrage automatique, de relier par une bielle le contrepoids, au bras auxiliaire de la flèche. Une telle liaison mécanique n'est toutefois pas entièrement satisfaisante compte tenu des conditions de travail habituelles des grues. La flèche de grue selon l'invention est exposée dans la revendication 1.In document EP-A-0 033 060, it has already been proposed, in order to ensure such automatic balancing, to connect the counterweight, by a connecting rod, to the auxiliary arm of the boom. However, such a mechanical connection is not entirely satisfactory taking into account the usual working conditions of cranes. The crane boom according to the invention is set out in claim 1.

La valeur du contrepoids étant calculée en fonction du poids propre des éléments de la flèche (y compris le moyen de préhension tel que grappin ou moufle qu'elle supporte) et en fonction des bras de levier, les mouvements synchronisés du bras auxiliaire et du contrepoids (par alimentation du vérin de commande de l'un d'eux au moyen du fluide hyraulique refoulé du vérin de commande de l'autre) permettent ainsi d'obtenir au choix un équilibrage total ou partiel de la flèche.The value of the counterweight being calculated as a function of the dead weight of the elements of the boom (including the gripping means such as grapple or muffle which it supports) and according to the lever arms, the synchronized movements of the auxiliary arm and the counterweight (by supplying the control cylinder of one of them by means of the hydraulic fluid discharged from the control cylinder of the other) thus make it possible to obtain a choice of total or partial balancing of the boom.

Le dispositif selon l'invention permet de plus de réduire considérablement les puissances des organes moteurs et récepteurs nécessaires aux mouvements de la charge, et donc de réduire les consommations d'énergie.The device according to the invention also makes it possible to considerably reduce the powers of the motor and receiver organs necessary for the movements of the load, and therefore to reduce energy consumption.

Un distributeur hydraulique, dans une première position, assure l'alimentation en fluide hydraulique de la chambre du vérin de commande du contrepoids qui n'est pas reliée au vérin de commande du bras auxiliaire alors que la chambre du vérin de commande du bras auxiliaire qui n'est pas reliée au vérin de commande du contrepoids est en communication avec un réservoir de fluide, l'autre chambre du vérin de commande du contrepoids transférant le fluide hydraulique à l'autre chambre du vérin de commande du bras auxiliaire. Ce distributeur, dans une seconde position, alimente en fluide la chambre du vérin de commande du bras auxiliaire qui n'est pas reliée au vérin de commande du contrepoids et met en communication avec le réservoir de fluide la chambre du vérin de commande du contrepoids non reliée au vérin de commande du bras auxiliaire, alors que la chambre du vérin de commande du bras auxiliaire qui est reliée à la chambre du vérin de commande du contrepoids transmet le fluide hydraulique à cette chambre.A hydraulic distributor, in a first position, ensures the supply of hydraulic fluid to the chamber of the counterweight control cylinder which is not connected to the control cylinder of the auxiliary arm while the chamber of the control cylinder of the auxiliary arm which is not connected to the counterweight control cylinder is in communication with a fluid reservoir, the other chamber of the counterweight control cylinder transferring the hydraulic fluid to the other chamber of the auxiliary arm control cylinder. This distributor, in a second position, supplies fluid to the chamber of the control cylinder of the auxiliary arm which is not connected to the control cylinder of the counterweight and puts in communication with the fluid tank the chamber of the control cylinder of the counterweight not connected to the control cylinder of the auxiliary arm, while the chamber of the control cylinder of the auxiliary arm which is connected to the chamber of the control cylinder of the counterweight transmits the hydraulic fluid to this chamber.

On notera que le dispositif d'équilibrage selon l'invention peut aussi bien s'appliquer à des flèches à bras articulés qu'à des flèches à bras télescopiques.It will be noted that the balancing device according to the invention can be applied to arrows with articulated arms as well as to arrows with telescopic arms.

Pour bien faire comprendre le dispositif selon l'invention on décrira ci-après, à titre d'exemples sans caractère limitatif, deux formes d'exécution préférées en référence au dessin schématique annexé dans lequel:

  • la figure 1 est une vue de côté d'une flèche de grue à bras articulés, équipée du dispositif d'équilibrage automatique selon l'invention; et
  • la figure 2 est une vue analogue pour une flèche de grue à bras télescopiques.
To clearly understand the device according to the invention, two preferred embodiments will be described below, by way of non-limiting examples, with reference to the appended schematic drawing in which:
  • Figure 1 is a side view of a crane boom with articulated arms, equipped with the automatic balancing device according to the invention; and
  • Figure 2 is a similar view for a crane boom with telescopic arms.

En référence à la figure 1, on a représenté en 1 le socle de grue, en 2 la tourelle pivotante sur- montante ce socle et en 3 le bras principal de flèche articulé vers son extrémité arrière à la tourelle 2, autour d'un axe horizontal 4, pour pouvoir pivoter dans un plan vertical sous la commande d'un vérin hydraulique 5. A l'extrémité avant du bras principal 3 est articulé, autour d'un axe horizontal 6, un bras auxiliaire 7 dont l'extrémité avant porte un moyen de préhension constitué, dans l'exemple représenté, par un grappin 8. L'extrémité arrière coudée du bras auxiliaire 7 est solidaire de l'extrémité libre de la tige 9 d'un vérin hydraulique 10 dont le corps est articulé sur une chape 11 solidaire du bras principal 3.Referring to Figure 1, there is shown in 1 the crane base, in 2 the pivoting turret overhanging this base and in 3 the main boom arm hinged towards its rear end to the turret 2, around an axis horizontal 4, in order to be able to pivot in a vertical plane under the control of a hydraulic cylinder 5. At the front end of the main arm 3 is articulated, around a horizontal axis 6, an auxiliary arm 7 whose front end carries a gripping means constituted, in the example shown, by a grapple 8. The angled rear end of the auxiliary arm 7 is integral with the free end of the rod 9 of a hydraulic cylinder 10 whose body is articulated on a yoke 11 secured to the main arm 3.

A l'extrémité arrière du bras principal 3 est articulé, autour d'un axe horizontal 12, un balancier 13 solidaire d'un contrepoids 14. Le balancier 13 est articulé à une extrémité de la tige 15 d'un vérin hydraulique 16 dont le corps est fixé de façon pivotante à une chape 17 portée par le bras principal 3.At the rear end of the main arm 3 is articulated about a horizontal axis 12, a balance 13 secured to a counterweight 14. The balance 13 is articulated at one end of the rod 15 of a hydraulic cylinder 16, the body is pivotally attached to a yoke 17 carried by the main arm 3.

On décrira maintenant le système d'alimentation hydraulique des vérins 10 et 16. A cet effet, on a représenté en 18 un réservoir de fluide hydraulique, en 19 une pompe reliée à ce réservoir et en 20 un distributeur hydraulique à trois positions. A ce distributeur 20 aboutissent d'une part un conduit de pression 21 relié à la pompe 19 et un conduit de retour 22 relié au réservoir 18 et, d'autre part, un conduit 23 relié à la chambre 24 à section pleine du vérin 16. Un conduit 27 relie en série les chambres à section annulaire respectivement 28 et 29 des vérins 10 et 16. Le distributeur 20 peut prendre trois positions différentes c'est-à-dire:

  • -une position centrale (représentée au dessin) dans laquelle les conduits 23 et 25, aboutissant respectivement aux vérins 10 et 16, sont isolés de l'alimentation en fluide et du réservoir:
  • -une position correspondant à la partie de gauche (en regardant la figure) du distributeur, dans laquelle le conduit 23 menant à la chambre 24 du vérin 10 est relié à la pompe 19 et le conduit 25 menant à la chambre 26 du vérin 16 est relié au réservoir 18;
  • -une position correspondant à la partie de droite du distributeur (en regardant la figure) dans laquelle, à l'inverse, la chambre 24 du vérin 10 est reliée au réservoir 18 et la chambre 26 du vérin 16 est reliée à la pompe d'alimentation 19.
The hydraulic supply system of the jacks 10 and 16 will now be described. For this purpose, there is shown at 18 a reservoir of hydraulic fluid, at 19 a pump connected to this reservoir and at 20 a hydraulic distributor with three positions. At this distributor 20 lead on the one hand a pressure conduit 21 connected to the pump 19 and a return conduit 22 connected to the reservoir 18 and, on the other hand, a conduit 23 connected to the chamber 24 with full section of the jack 16 A conduit 27 connects in series the annular section chambers 28 and 29 respectively of the jacks 10 and 16. The distributor 20 can take three different positions, that is to say:
  • a central position (shown in the drawing) in which the conduits 23 and 25, leading respectively to the jacks 10 and 16, are isolated from the fluid supply and from the reservoir:
  • -a position corresponding to the left part (looking at the figure) of the dispenser, wherein the conduit 23 leading to the chamber 24 of the cylinder 10 is connected to the pump 19 and the conduit 25 leading to the chamber 26 of the cylinder 16 is connected to the reservoir 18;
  • -a position corresponding to the right part of the distributor (looking at the figure) in which, conversely, the chamber 24 of the cylinder 10 is connected to the reservoir 18 and the chamber 26 of the cylinder 16 is connected to the pump food 19.

On expliquera maintenant le fonctionnement du dispositif. En supposant qu'il désire procéder à un allongement de la portée de la flèche, l'opérateur place alors le distributeur 20 dans la position correspondant à sa partie de droite en regardant la figure 1, de sorte que la chambre 26 du vérin 16 se trouve alimentée en fluide sous pression et, par déplacement de la tige 15, produit simultanément un basculement du contrepoids 14 et, en raison de la liaison entre les chambres 29 et 28 des vérins 16 et 10, un soulèvement du bras auxiliaire 7. Comme la valeur du contrepoids 14 est calculée en fonction du poids propre des éléments de la flèche et du grappin 8, et en fonction des bras de levier, la flèche se trouve donc équilibrée en permanence (en totalité ou partiellement), sur l'ensemble formé par le socle 1 et la tourelle 2. Lorsque la position d'allongement désirée de la flèche est atteinte, le distributeur 20 est ramené dans sa position intermédiaire et les opérations de levage et de descente de la charge sont alors assurées par le vérin 5.The operation of the device will now be explained. Assuming that he wishes to extend the reach of the boom, the operator then places the distributor 20 in the position corresponding to its right-hand part, looking at FIG. 1, so that the chamber 26 of the jack 16 is is supplied with pressurized fluid and, by displacement of the rod 15, simultaneously produces a tilting of the counterweight 14 and, due to the connection between the chambers 29 and 28 of the jacks 16 and 10, a lifting of the auxiliary arm 7. As the value of the counterweight 14 is calculated as a function of the dead weight of the elements of the boom and of the grapple 8, and as a function of the lever arms, the boom is therefore permanently balanced (in whole or in part), on the assembly formed by the base 1 and the turret 2. When the desired lengthening position of the boom is reached, the distributor 20 is brought back to its intermediate position and the operations of lifting and lowering the load are then carried out by the jack 5.

S'il se trouve, inversement, que l'opérateur décide de procéder à une réduction de la portée de la flèche, il lui faudra alors placer le distributeur 20 dans la position correspondant à sa partie de gauche en regardant la figure 1. La chambre 24 du vérin 10 est alors alimentée, ce qui produit le basculement du bras auxiliaire 7 et simultanément, par la liaison de la chambre 28 de ce vérin avec la chambre 29 du vérin 16, ce qui assure le relevage du contrepoids 14 pour assurer l'équilibrage automatique.If, conversely, the operator decides to reduce the reach of the boom, he will then have to place the distributor 20 in the position corresponding to its left part, looking at FIG. 1. The chamber 24 of the jack 10 is then supplied, which produces the tilting of the auxiliary arm 7 and simultaneously, by the connection of the chamber 28 of this jack with the chamber 29 of the jack 16, which ensures the lifting of the counterweight 14 to ensure the automatic balancing.

La forme d'exécution de la figure 2 ne diffère principalement de celle de la figure 1 que par le fait que le bras auxiliaire 7 est monté pour coulisser de façon télescopique à l'intérieur du bras principal 3, sous l'action du vérin hydraulique 10'. On a aussi remplacé le grappin 8 de la figure 1 par un système avec treuil 30 et moufle 31. Le dispositif de commande hydraulique est pratiquement le même que celui de la figure 1, si ce n'est que le conduit 23' relie le distributeur 20 à la chambre à section annulaire 28' du vérin 10', alors que le conduit 27' relie en série la chambre à section pleine 24' du vérin 10' et la chambre à section annulaire 29' du vérin 16'. De façon analogue, pour augmenter la portée de la flèche, l'utilisateur placera le distributeur 20 dans sa position correspondant à sa partie de droite en regardant la figure 2 ce qui provoquera simultanément la basculement du contrepoids 14 et la sortie du bras auxiliaire télescopique 7 en assurant l'équilibrage automatique. Inversement, pour réduire la portée de la flèche, l'utilisateur placera le distributeur 20 dans sa position correspondant à sa partie de gauche en regardant la figure 2, assurant simultanément la rentrée du bras auxiliaire 7 et le relevage du contrepoids 14.The embodiment of Figure 2 differs mainly from that of Figure 1 only in that the auxiliary arm 7 is mounted to slide telescopically inside the main arm 3, under the action of the hydraulic cylinder 10 '. The grapple 8 in FIG. 1 has also been replaced by a system with winch 30 and block 31. The hydraulic control device is practically the same as that in FIG. 1, except that the conduit 23 ′ connects the distributor. 20 to the annular section chamber 28 'of the jack 10', while the conduit 27 'connects in series the full section chamber 24' of the jack 10 'and the annular section chamber 29' of the jack 16 '. Similarly, to increase the reach of the boom, the user will place the distributor 20 in its position corresponding to its right-hand part, looking at FIG. 2, which will simultaneously cause the counterweight 14 to tip over and the telescopic auxiliary arm 7 to come out. ensuring automatic balancing. Conversely, to reduce the reach of the boom, the user will place the distributor 20 in its position corresponding to its left-hand part, looking at FIG. 2, simultaneously ensuring the retraction of the auxiliary arm 7 and the lifting of the counterweight 14.

On comprendra que la description ci-dessus n'a été donnée qu'à titre d'exemple, sans caractère limitatif, et que des adjonctions ou des modifications constructives pourraient y être apportées sans sortir du cadre de l'invention définie par les revendications qui suivent.It will be understood that the above description has been given only by way of example, without limitation, and that additions or constructive modifications could be made thereto without departing from the scope of the invention defined by the claims which follow.

Claims (6)

1. Variable reach crane jib comprising a main arm (3) fitted so that it pivots on a support turret (1, 2), an auxiliary arm (7) which forms an extension of the main arm at one end of the latter and which is movable in relation to the main arm, a counterweight (14) attached to a balance arm (13) at the other end of the main arm and movable in relation to the latter, a hydraulic jack (16, 16') arranged between the main arm and the balance arm of the counterweight for controlling the position of the counterweight in relation to the main arm and a means (16, 27, 10) connecting the auxiliary arm and the counterweight so as to ensure automatically a variation in the reach of the counterweight in relation to the variation in the reach of the auxiliary arm, characterised in that the said means consists of a hydraulic jack (10, 10') arranged between the main arm (3) and the auxiliary arm (7) and connected to the hydraulic jack (16, 16') for controlling the balance arm (13) of the counterweight by the connection in series of a chamber (28,28') of the jack (10,10') for controlling the auxiliary arm with a chamber (29, 29') of the jack (16, 16') for controlling the balance arm of the counterweight in such a way that the jack (16, 16') associated with the balance arm (13) of the counterweight (14) operating under the action of the latter as a hydraulic pump, supplies to the jack (10, 10') associated with the auxiliary arm the pressure required for actuating the said auxiliary arm and vice versa.
2. Crane jib according to claim 1, characterised in that a hydraulic distributor (20) in a first position provides for the supply of hydraulic fluid to the chamber (26, 26') of the jack (16, 16') for controlling the counterweight (14) which is not connected to the jack (10, 10') for controlling the auxiliary arm (7) whilst the chamber (24, 28') of the jack (10, 10') for controlling the auxiliary arm (7) which is not connected to the jack (16, 16') for controlling the counterweight (14) is connected to a fluid reservoir (18), the other chamber (29, 29') of the jack for controlling the counterweight (14) transferring the hydraulic fluid to the other chamber (28, 24') of the jack for controlling (10, 10') the auxiliary arm (7) and in a second position supplies with fluid the chamber (24, 28') of the jack (10, 10') for controlling the auxiliary arm (7) which is not connected to the jack (16, 16') for controlling the counterweight (14) and connects to the fluid reservoir (18) the chamber (26, 26') of the jack (16,16') for controlling the counterweight not connected to the jack (10, 10') for controlling the auxiliary arm, whilst the chamber (28, 24') of the jack for controlling (10, 10') the auxiliary arm (7) which is connected to the chamber (29, 29') of the jack for controlling (16, 16') the counterweight (14) transmits the hydraulic fluid to this chamber.
3. Crane jib according to any one of claims 1 and 2, characterised in that the auxiliary arm (7) is attached in an articulated manner to the main arm (3).
4. Crane jib according to claim 3, characterised in that the chambers of annular section (28, 29) of the control jacks (10, 16) are connected in series, whilst the chambers of full section (24, 26) of these jacks are connected as selected to the supply of hydraulic fluid or the fluid reservoir.
5. Crane jib according to any one of claims 1 and 2, characterised in that the auxiliary arm (7) is fitted in a telescopic sliding arrangement inside the main arm (3).
6. Crane jib according to claim 5, characterised in that the full section chamber (24') of the jack controlling (10') the auxiliary arm (7) is connected in series to the chamber of annular section (29') of the jack controlling (16') the counterweight (14), whilst the chamber of annular section (28') of the jack controlling (10') the auxiliary arm (7) and the full section chamber (26') of the jack controlling (16') the counterweight (14) are connected as selected to the hydraulic fluid supply or the fluid reservoir.
EP83402277A 1982-11-26 1983-11-25 Variable reach crane jib with automatic counterbalancing device Expired EP0110786B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83402277T ATE32868T1 (en) 1982-11-26 1983-11-25 ADJUSTABLE JIB WITH AUTOMATIC BALANCING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8219842A FR2536733B1 (en) 1982-11-26 1982-11-26 CRANE BOOM WITH VARIABLE RANGE, WITH AUTOMATIC BALANCING DEVICE
FR8219842 1982-11-26

Publications (2)

Publication Number Publication Date
EP0110786A1 EP0110786A1 (en) 1984-06-13
EP0110786B1 true EP0110786B1 (en) 1988-03-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP83402277A Expired EP0110786B1 (en) 1982-11-26 1983-11-25 Variable reach crane jib with automatic counterbalancing device

Country Status (6)

Country Link
US (1) US4867321A (en)
EP (1) EP0110786B1 (en)
JP (1) JPS59143893A (en)
AT (1) ATE32868T1 (en)
DE (1) DE3375903D1 (en)
FR (1) FR2536733B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630796A (en) * 1984-04-30 1986-12-23 U.S. Philips Corporation X-ray apparatus comprising a part mobile thereon
FR2653108A1 (en) * 1989-10-18 1991-04-19 Asservissements Vendomois Method for lifting or depositing loads by means of a lifting appliance comprising a variable-position balancing counterweight
GB2258445A (en) * 1991-06-12 1993-02-10 Kenneth Roy Hill Counter balancing camera suspension apparatus.
EP0970915A2 (en) 1998-07-10 2000-01-12 MANNESMANN Aktiengesellschaft Crane jib

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513999C1 (en) * 1985-04-18 1986-10-09 Deutsche Gesellschaft für Wiederaufarbeitung von Kernbrennstoffen mbH, 3000 Hannover Remote-controlled positioning and carrying device for remote handling devices
AT385259B (en) * 1986-04-02 1988-03-10 Voest Alpine Hebetech Bruecken DEVICE FOR VERTICAL CONVEYING A LOAD, IN PARTICULAR SHIP UNLOADING CRANE
JPS63162788U (en) * 1987-04-15 1988-10-24
US5598935A (en) * 1993-03-18 1997-02-04 American Crane Corporation Frame structure for lift crane machinery
GB2316383B (en) * 1996-08-23 2000-04-05 Liebherr Werk Ehingen Mobile crane
DE29718478U1 (en) * 1997-10-17 1998-02-19 Ec Engineering + Consulting Spezialmaschinen Gmbh, 89079 Ulm Plunger cylinder as hydraulic oil supply
AU753116B2 (en) * 1997-10-31 2002-10-10 Grove U.S. L.L.C. Automatic leveling and synchronization system for counterweight removal and installation
US6821081B1 (en) * 1998-05-04 2004-11-23 William C. Kurtz Loader with extending bucket and counter balance
FR2801576B1 (en) * 1999-11-25 2002-01-04 Denis Montgon CRANE BOOM WITH VARIABLE RANGE AND SELF-BALANCING
EP1172323A1 (en) * 2000-07-11 2002-01-16 Jean-Marc Yerly Articulated jib crane
FR2836466B1 (en) * 2002-02-22 2004-09-17 Sms Synergie Man Systeme BOOM CRANE BALANCED BY A FIXED COUNTERWEIGHT
FR2837808B1 (en) * 2002-03-28 2004-10-29 Sms Synergie Man Systeme SYSTEM FOR SUPPLYING OIL IN THE BALANCING LINE OF A CRANE BOOM WITH VARIABLE RANGE
FR2880337B1 (en) * 2005-01-05 2007-04-06 Realisation D App De Manutenti ARROW CRANE WITH AUXILIARY ARM MAY BE VERTICAL MAINTAINED
CN100400409C (en) * 2005-11-15 2008-07-09 万维柔 Hydraulic self-balancing crane device
US7967158B2 (en) 2006-10-27 2011-06-28 Manitowoc Crane Companies, Llc Mobile lift crane with variable position counterweight
US8646628B2 (en) * 2007-11-26 2014-02-11 Vernon Martin Lifting device
US9278834B2 (en) 2009-08-06 2016-03-08 Manitowoc Crane Group, LLC Lift crane with moveable counterweight
BRPI1001193A2 (en) * 2010-02-11 2012-07-03 Vinicius De Carvalho Cal crane enhancement and counterweight control process on a real time crane
FR2966802A1 (en) * 2010-10-27 2012-05-04 Eurocopter France AIRCRAFT PROVIDED WITH A MEANS OF HELITREUILLAGE, AND ASSOCIATED METHOD.
WO2013056272A1 (en) * 2011-10-10 2013-04-18 9Dot Solutions (Pty) Ltd Container handling method and apparatus
US9062824B2 (en) 2013-03-12 2015-06-23 Konecranes Plc Head assembly for jacking tower
GB2514375B8 (en) * 2013-05-21 2017-11-08 Colebrook Bosson & Saunders (Products) Ltd Apparatus for supporting a load
EP3099620A4 (en) 2014-01-27 2017-10-11 Manitowoc Crane Companies, Inc. Height adjustment mechanism for an auxiliary member on a crane
WO2015113048A1 (en) 2014-01-27 2015-07-30 Manitowoc Crane Companies, Llc Lift crane with improved movable counterweight
GB2521233B (en) * 2014-04-16 2015-12-09 Kiss Works Ltd Lifting apparatus and methods of transporting a load
CN104528553B (en) * 2015-01-28 2017-01-18 徐州重型机械有限公司 Movable type counter weight mechanism of hoisting machine and hoisting machine
CN106629489A (en) * 2017-01-18 2017-05-10 中信戴卡股份有限公司 Chuck detachment and transfer device
CN112828548B (en) * 2020-12-30 2022-08-09 东莞市海洛实业有限公司 Lifting device for assembling press plate of punch press
CN114558852B (en) * 2022-02-25 2022-12-20 湘潭大学 High-pressure jet dredging system for clogged and scrapped pipelines
CN117383441B (en) * 2023-12-07 2024-02-13 山西机电职业技术学院 Overload self-protection crane

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763385A (en) * 1952-06-18 1956-09-18 Harrison Jolly Kibler Tractor mounted hydraulic loader
GB1110454A (en) * 1965-07-20 1968-04-18 Interlock Ind Ltd Improvements in window or the like stay fasteners
FI40624B (en) * 1965-12-14 1968-12-31 Tampella Oy Ab
GB1110475A (en) * 1965-12-17 1968-04-18 Beteiligungs & Patentverw Gmbh Counterbalanced boom
FR2049572A5 (en) * 1969-06-13 1971-03-26 Delattre Levivier
GB1344110A (en) * 1970-03-09 1974-01-16 Caterpillar Tractor Co Constant load position telescoping boom
US3805834A (en) * 1970-11-16 1974-04-23 Fmc Corp Double counterbalanced marine loading arm
US3726416A (en) * 1970-12-15 1973-04-10 Kidde & Co Walter Extendable counterweight for cranes and method of manipulating
US3734326A (en) * 1971-07-15 1973-05-22 Eaton Corp Variable capacity lift truck
US3938669A (en) * 1974-03-25 1976-02-17 Caterpillar Tractor Co. Hydraulic circuit for a pipelayer
US3924753A (en) * 1974-04-22 1975-12-09 Case Co J I Crane counterweight support and means for removing and mounting same
DE2628863C3 (en) * 1976-06-26 1979-10-31 Demag Ag, 4100 Duisburg Bucket wheel pick-up or the like. device
SU589204A1 (en) * 1976-09-03 1978-01-25 Всесоюзный научно-исследовательский институт строительного и дорожного машиностроения Hydraulic drive for jib-type self-propelled crane
JPS5410141U (en) * 1977-06-23 1979-01-23
DE3071488D1 (en) * 1979-10-11 1986-04-17 Sobemai Sa Balancing system for parts of cranes and the load
FR2486049B2 (en) * 1980-07-04 1986-09-26 Buzzichelli Lilian IMPROVEMENT IN LIFTING EQUIPMENT INCLUDING A BOOM AND A COUNTERWEIGHT SUPPORT WITH ADJUSTABLE RESPECTIVE POSITIONS
JPS5733769U (en) * 1980-08-04 1982-02-22

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630796A (en) * 1984-04-30 1986-12-23 U.S. Philips Corporation X-ray apparatus comprising a part mobile thereon
FR2653108A1 (en) * 1989-10-18 1991-04-19 Asservissements Vendomois Method for lifting or depositing loads by means of a lifting appliance comprising a variable-position balancing counterweight
GB2258445A (en) * 1991-06-12 1993-02-10 Kenneth Roy Hill Counter balancing camera suspension apparatus.
GB2258445B (en) * 1991-06-12 1995-05-03 Kenneth Roy Hill Camera suspension apparatus
EP0970915A2 (en) 1998-07-10 2000-01-12 MANNESMANN Aktiengesellschaft Crane jib

Also Published As

Publication number Publication date
FR2536733A1 (en) 1984-06-01
DE3375903D1 (en) 1988-04-14
FR2536733B1 (en) 1986-03-07
US4867321A (en) 1989-09-19
ATE32868T1 (en) 1988-03-15
JPH0411477B2 (en) 1992-02-28
JPS59143893A (en) 1984-08-17
EP0110786A1 (en) 1984-06-13

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