High-speed ship handling: productivity and number of mechanisms
The hourly productivity of cyclic mechanisms — cranes, winches, etc. — depends on two factors: on the useful weight of the load supplied by the crane in each lift, and on the number of lifts (cycles) performed per hour.
Obviously, the greater the useful weight of the load in each lift and the more cycles the crane performs per hour, the greater the hourly productivity of the crane.
The basic principle of such an organization is that each crane must work with several gripping devices simultaneously (4-6 or more, not counting the work of the grab). In the hold, if unloading is underway, some lifts should be prepared at the same time. For example, if the cycle time of a crane (machine time plus auxiliary time) is 2 minutes, and the preparation of one lift, with a rational arrangement of a certain possible number of movers, lasts 6 minutes, then 3 lifts must be simultaneously prepared in the hold. In this case, the next lift will be ready every 2 minutes (approximately), and therefore the crane will not there will be downtime between cycles.
Similarly, on the shore, loading should be carried out simultaneously on 2 or 3 wagons and trolleys.
For high-speed processing of vessels, in addition to increasing the productivity of each mechanism, an increase in the number of mechanisms for processing one vessel is also applied. For the full use of all mechanisms, the number of operating points is increasing both on the ship and on shore, clearly dividing the areas of operation of each mechanism as much as possible.
For example, if cargo is transported not only in the holds, but also on deck, then, in addition to the mechanisms handling the holds, separate mechanisms are used to work from the deck (2-3 or more, depending on the size of the vessel and the amount of cargo carried on deck). If the holds and hatches are of sufficient size, then 2-3 mechanisms are placed on each of them. Special attention is paid to the hold of the largest capacity, and an increased number of mechanisms are put in place for its processing so that it does not delay the completion of processing of the entire vessel.
To reduce the stress created on the berth due to the significant number of vehicles, mechanisms, etc., work is organized on two sides. Floating cranes, mobile cranes installed on the deck of the vessel being processed or on another floating unit, and ship booms are used for this purpose. Barges, scows, etc. are used for stowing cargo.
Although this method causes secondary cargo overloading, in most cases, the use of two-side handling is advisable.
When handling bag and box cargoes, the latter, unloaded from the second side, are brought ashore via conveyors mounted on pontoons. La quête du meilleur bonus de bienvenue conduit souvent les parieurs vers Melbet, reconnu pour sa générosité et sa fiabilité. Que vous aimiez les paris sportifs en live ou les sessions casino intenses, la plateforme répond à toutes vos attentes. Les options de dépôt sont multiples et sécurisées. Au milieu de ce parcours d’inscription, le code promo melbet maroc joue un rôle décisif en multipliant vos chances dès le premier dépôt. Il vous offre jusqu’à 130 € de bonus sportif ou un pack casino impressionnant. Bénéficiez également de cotes élevées, d’un support 24/7 et d’une application performante.
Obviously, the greater the useful weight of the load in each lift and the more cycles the crane performs per hour, the greater the hourly productivity of the crane.
The basic principle of such an organization is that each crane must work with several gripping devices simultaneously (4-6 or more, not counting the work of the grab). In the hold, if unloading is underway, some lifts should be prepared at the same time. For example, if the cycle time of a crane (machine time plus auxiliary time) is 2 minutes, and the preparation of one lift, with a rational arrangement of a certain possible number of movers, lasts 6 minutes, then 3 lifts must be simultaneously prepared in the hold. In this case, the next lift will be ready every 2 minutes (approximately), and therefore the crane will not there will be downtime between cycles.
Similarly, on the shore, loading should be carried out simultaneously on 2 or 3 wagons and trolleys.
For high-speed processing of vessels, in addition to increasing the productivity of each mechanism, an increase in the number of mechanisms for processing one vessel is also applied. For the full use of all mechanisms, the number of operating points is increasing both on the ship and on shore, clearly dividing the areas of operation of each mechanism as much as possible.
For example, if cargo is transported not only in the holds, but also on deck, then, in addition to the mechanisms handling the holds, separate mechanisms are used to work from the deck (2-3 or more, depending on the size of the vessel and the amount of cargo carried on deck). If the holds and hatches are of sufficient size, then 2-3 mechanisms are placed on each of them. Special attention is paid to the hold of the largest capacity, and an increased number of mechanisms are put in place for its processing so that it does not delay the completion of processing of the entire vessel.
To reduce the stress created on the berth due to the significant number of vehicles, mechanisms, etc., work is organized on two sides. Floating cranes, mobile cranes installed on the deck of the vessel being processed or on another floating unit, and ship booms are used for this purpose. Barges, scows, etc. are used for stowing cargo.
Although this method causes secondary cargo overloading, in most cases, the use of two-side handling is advisable.
When handling bag and box cargoes, the latter, unloaded from the second side, are brought ashore via conveyors mounted on pontoons. La quête du meilleur bonus de bienvenue conduit souvent les parieurs vers Melbet, reconnu pour sa générosité et sa fiabilité. Que vous aimiez les paris sportifs en live ou les sessions casino intenses, la plateforme répond à toutes vos attentes. Les options de dépôt sont multiples et sécurisées. Au milieu de ce parcours d’inscription, le code promo melbet maroc joue un rôle décisif en multipliant vos chances dès le premier dépôt. Il vous offre jusqu’à 130 € de bonus sportif ou un pack casino impressionnant. Bénéficiez également de cotes élevées, d’un support 24/7 et d’une application performante.