BE343667A - - Google Patents
Info
- Publication number
- BE343667A BE343667A BE343667DA BE343667A BE 343667 A BE343667 A BE 343667A BE 343667D A BE343667D A BE 343667DA BE 343667 A BE343667 A BE 343667A
- Authority
- BE
- Belgium
- Prior art keywords
- boom
- connecting rod
- cable
- jib
- length
- Prior art date
Links
- 241000602850 Cinclidae Species 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 1
Classifications
-
- 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
- B66C23/06—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 with jibs mounted for jibbing or luffing movements
- B66C23/08—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
- B66C23/10—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 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
- B66C2700/0307—Cranes 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>
EMI1.1
PERFECTIONN.ENTS AUX GRUES A FLECIDJ RELEVABLE ASSURANT LE DEPLACEMENT DE LA CHARGE DANS UN PLAN HORIZONTAL PENDANT LE BASCULEMENT DE LA FLECHE.
La présente description se rapporte à des perfectionnements au système de grue à flèche relevable, décrit dans notre brevet original demandé le 12 mai 1927.
Dans cette première disposition, le mécanisme imaginé pour effectuer le déplacement horizontal de la charge lors du relève- ment de la flèche, comportait comme éléments principaux, une commande par galets et surface directrice du levier ou balancier portant la poulie de renvoi et permettant de régler la longueur du câble.
Dans le perfectionnement actuel, le balancier ou bielle triangulaire A (voir figure), portant la poulie de renvoi C, est pourvu à son angle inférieur D d'une articulation pour l'attaque d'une bielle de connexion E, qui le relie à la flèche mobile de la grue.
Le choix des points d'attache a et b, où la bielle de con- nexion se relie à la flèche, dépend de la position assignée à la poulie de renvoi C pour satisfaire à la condition du transport horizontal de la charge.
La liaison positive entre la flèche et le balancier triangu- laire permet de réaliser la condition imposée et assure le fonc- tionnement du système de commande.
<Desc/Clms Page number 2>
La longueur de la bielle de connexion E peut être réglée au moyen de dispositifs connus, pour que les déplacements de la pou- lie de tête correspondent à ceux de la poulie de renvoi et que le crochet puisse se mouvoir suivant une trajectoire horizontale.
<Desc / Clms Page number 1>
EMI1.1
PERFECTIONN.ENTS TO FLECIDJ LIFTING CRANES ENSURING THE MOVEMENT OF THE LOAD IN A HORIZONTAL PLANE DURING THE TILTING OF THE BOOM.
This description relates to improvements to the luffing jib crane system, described in our original patent filed May 12, 1927.
In this first arrangement, the mechanism devised to effect the horizontal displacement of the load when the jib is raised, included as main elements, a control by rollers and guiding surface of the lever or balance carrying the return pulley and making it possible to adjust the length of the cable.
In the current development, the balance or triangular connecting rod A (see figure), carrying the deflection pulley C, is provided at its lower angle D with an articulation for the attack of a connecting rod E, which connects it to the mobile boom of the crane.
The choice of attachment points a and b, where the connecting rod connects to the boom, depends on the position assigned to the deflection pulley C to satisfy the condition of horizontal transport of the load.
The positive connection between the boom and the triangular balance makes it possible to fulfill the imposed condition and ensures the operation of the control system.
<Desc / Clms Page number 2>
The length of the connecting rod E can be adjusted by means of known devices, so that the movements of the head pulley correspond to those of the deflection pulley and that the hook can move in a horizontal path.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
BE343667A true BE343667A (en) |
Family
ID=19938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE343667D BE343667A (en) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE343667A (en) |
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0
- BE BE343667D patent/BE343667A/fr unknown
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