BE345054A - - Google Patents

Info

Publication number
BE345054A
BE345054A BE345054DA BE345054A BE 345054 A BE345054 A BE 345054A BE 345054D A BE345054D A BE 345054DA BE 345054 A BE345054 A BE 345054A
Authority
BE
Belgium
Prior art keywords
boom
point
crane
traction
load
Prior art date
Application number
Other languages
French (fr)
Publication of BE345054A publication Critical patent/BE345054A/fr

Links

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
    • B66C23/06Cranes 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 with jibs mounted for jibbing or luffing movements
    • B66C23/08Cranes 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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
    • B66C23/10Cranes 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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00Cranes
    • B66C2700/03Cranes with arms or jibs; Multiple cranes
    • B66C2700/0307Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib

Landscapes

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

Description

       

   <Desc/Clms Page number 1> 
 



  Grue basculante*- 
On connait des grues basculantes qui produisent un trajet horizontal de la charge au moyen d'un système de flèches qui comprend une flèche principale et une flèche de pointe à une branche qui est articulée à la précédente et qui est guidée par un câble directeur, lequel passe sur un prolongement de la flèche principale pour se rendre à un point fixe de la charpente de la   grue.     Le   système de bascule travaille donc -au point de vue   'climatique   comme un système à fermmeture par une force seulement, ce qui provoque les inconvénients connus et produit en cas d'allongement du câble directeur des écarts par rapport au trajet horizontal désiré de la charge ;

   

 <Desc/Clms Page number 2> 

 
Suivant la présente invention, le guidage de la flèche de   pointe à   une branche est obtenu au moyen d'un système . cinématique à fermeture par accouplement,   système   qui est composé de tiges de traction et de leviers coudés montés à la suite l'une de   neutre,   ce-qui évite les inconvé- nients mentionnés - 
Le -.dessin montre en élévation .:

  un exemple de   réali-   sation de l'objet de   l'invention.-   
La flèche de pointe 2 est articulée à la flèche principale 1 au point 3 et est guidée par le système compor- tant la tige de traction,4, le levier coudé 5 et la tige de traction 6 montés à la suite l'un de l'autre, le   cable   de   traction 6   étant rattachée 1 la charpente 10 de la grue, le levier coudé 5 à   la flèche   1 et la tige de traction 4 à la flèche de pointe 2 Les flèches ou les rapports des tiges de traction et du levier coudé peuvent être choisis de telle façon aue la pointe de,la flèchedécrit une trajectoire hori-   zontale   ou n'importe quelle autre trajectoire désirée, tandis que le câble - de charge est guidé,

   en vue de l'obtention d'une trajectoire horizontale   de   la charge, en passant sur la pointe 7 de la flèche et ensuite sur les pivots 3 et 8 ou en s'écartant des pivots, pour gagner le treuil 9, de sorte aune la charge se meut   horizontalement   de la position 1 à la position II lors du basculement du système de flèches. 



    REVENDICATIONS   
1 ) Grue basculante comportant un système de flèches constitué par une flèche principale et une flèche de pointe à une seule branche, articulée à la précédente,   carac-   térisée en ce que la flèche de pointe (2) est guidée par un sys terne de tiges de traction et de levier coudé montés a la suite l'un de l'autre et formant un système cinématique à fermeture par accouplement,   telle   manière que la charge se meut: suivant une horizontale, lors du basculement. 

 <Desc/Clms Page number 3> 

 



   2 ) Grue basculante suivant la revendication 1, caractérisée en ce que le système directeur à éléments montes à la suite l'un de l'autre est composé de la tige de traction   (4),   du levier   coude     (5)   et de la tige de traction   (6) ,   la tige de traction (4) étant rattachée à la flèche de pointe (2) le   clevier   coudé   (5) à   la flkche (1) et la tige de traction (6) à la charpente (10) de la   grue*'  



   <Desc / Clms Page number 1>
 



  Tipping crane * -
Tipping cranes are known which produce a horizontal path of the load by means of a boom system which comprises a main boom and a single-branch point boom which is hinged to the previous one and which is guided by a steering cable, which passes over an extension of the main boom to reach a fixed point on the crane frame. The rocking system therefore works -from the climatic point of view as a closing system by a force only, which causes the known drawbacks and produces deviations from the desired horizontal path of the load in the event of elongation of the guide wire. ;

   

 <Desc / Clms Page number 2>

 
According to the present invention, the guiding of the tip arrow to a branch is obtained by means of a system. coupling-closing kinematics, a system which is made up of pull rods and angled levers mounted one after the other of neutral, which avoids the disadvantages mentioned -
The drawing shows in elevation:

  an embodiment of the object of the invention.
The point boom 2 is articulated to the main boom 1 at point 3 and is guided by the system comprising the draw rod, 4, the bent lever 5 and the draw rod 6 mounted after one of the '' other, the traction cable 6 being attached 1 to the frame 10 of the crane, the angled lever 5 to the boom 1 and the traction rod 4 to the tip boom 2 The arrows or the ratios of the traction rods and the lever bent can be chosen in such a way that the tip of, the arrow describes a horizontal path or any other desired path, while the load cable is guided,

   with a view to obtaining a horizontal trajectory of the load, passing over the tip 7 of the boom and then over the pivots 3 and 8 or by moving away from the pivots, to reach the winch 9, so as to load moves horizontally from position 1 to position II when tilting the boom system.



    CLAIMS
1) Tipping crane comprising a system of jibs consisting of a main jib and a point jib with a single branch, articulated to the previous one, characterized in that the jib of point (2) is guided by a dull system of rods traction and elbow lever mounted one after the other and forming a kinematic system with closing by coupling, so that the load moves: in a horizontal, during tilting.

 <Desc / Clms Page number 3>

 



   2) Tipping crane according to claim 1, characterized in that the steering system with elements mounted one after the other is composed of the traction rod (4), the elbow lever (5) and the rod (6), the traction rod (4) being attached to the tip boom (2) the angled lever (5) to the arrow (1) and the traction rod (6) to the frame (10) of the crane * '


    
BE345054D BE345054A (en)

Publications (1)

Publication Number Publication Date
BE345054A true BE345054A (en)

Family

ID=21132

Family Applications (1)

Application Number Title Priority Date Filing Date
BE345054D BE345054A (en)

Country Status (1)

Country Link
BE (1) BE345054A (en)

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