SU1281474A1 - Electromagnetic mooring arrangement - Google Patents

Description

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This invention relates to shipbuilding.

The purpose of the invention is to provide a reliable mooring of the vessel at the berth in case of any changes in draft, trim and pitching of the vessel.

FIG. 1 shows an electromagnetic mooring device, operating position; in fig. 2 - the extreme position of the drum with a decrease in the draft of the vessel; in fig. 3 - the same, with an increase in the draft of the vessel.

The device consists of a drum 1, pressed to the side of the mooring vessel 2. A current is supplied to the working face of the drum facing the vessel’s side using a switch, switched on by the port dispatcher. Drum 1 is supported by spring t 3, axle 4, basmak 5 with thrust bearings 6. Drum 1 is fixed inside pier 7 of berth 8. Current is fed to electromagnets through sealed cables 9 passed through rod 3. 3. Next to niche 7 of berth 8, a docfender 10 is secured, protecting the vessel and the proposed device from excessive stresses during the ship’s berths.

In the case of lifting the vessel (Fig. 2), the drum 1 rises together with the vessel, the ratromagnetic coupling element, is electrically pulled out by the taut sealed cable 9, disconnecting the lower breaker 11 of the current. Under the action of the extended lower springs, the drum turns and presses to the side of the vessel with the next facet, which automatically when the cable is tensioned

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l 9 is energized. With an increase in the draft of the vessel (Fig. 3), the device operates in a similar way, but in this case, the upper spring-loaded rods 3 are stretched, the upper cables 9 are pulled out and the upper current interrupters 11 are triggered.

To ensure greater reliability of the proposed device, for each drum 1 two pairs of hermetic cables 9 are provided, one of which is a spare one. The current to the required electromagnet is supplied through collectors located on axis 4. The use of the shoes 5 with thrust bearings 6 allows the drum 1 to rotate unhindered when the vessel moves along the quay.

To ensure reliable and unimpeded operation of the proposed device, the dimensions of the niche 7, depending on the size of the drum 1, are chosen as follows: the length of the breadth must exceed the length of the drum by 1.5 times, the height of the niche is equal to two distances between the edges of the drum, and its depth - 1 , 2 distance between the edges of the drum.

The advantage of the present invention is to provide reliable vessel mooring at the berth under the influence of various dynamic factors (wind, waves, changes in draft, trim and crane), since all multifaceted drums, in contrast to mooring lines, experience approximately equal load. There is no need to pick off or select mooring ropes for changes in the draft of the vessel.

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Claims (1)

ELECTROMAGNETIC BOATING DEVICE containing an electromagnetic coupling element electrically connected to a current source and a suspension unit of this element including spring rods, characterized in that, in order to ensure reliable anchorage of the vessel at the berth for any changes in draft, trim and pitching of the vessel, electromagnetic the coupling element is made in the form of a multifaceted drum mounted with the possibility of rotation relative to the horizontal axis and bearing an electromagnet on each face, and its electrical connection with the source com current includes missed inside spring rods sealed cables, one end of each of which is conducted through the drum axis, and the other is connected to a current breaker, which is provided with the device. Yu QO <1